HomeMy WebLinkAbout02-21-13 EO&WR Committee PacketOTAY WATER DISTRICT ENGINEERING, OPERATIONS & WATER RESOURCES COMMITTEE MEETING and SPECIAL MEETING OF THE BOARD OF DIRECTORS 2554 SWEETWATER SPRINGS BOULEVARD SPRING VALLEY, CALIFORNIA Board Room
THURSDAY
February 21, 2013
12:00 P.M. This is a District Committee meeting. This meeting is being posted as a special meeting in order to comply with the Brown Act (Government Code Section §54954.2) in the event that a quorum of the Board is present. Items will be deliberated, however, no formal board actions will be taken at this meeting. The committee makes recommendations to the full board for its consideration and formal action.
AGENDA 1. ROLL CALL 2. PUBLIC PARTICIPATION – OPPORTUNITY FOR MEMBERS OF THE PUBLIC TO SPEAK TO THE BOARD ON ANY SUBJECT MATTER WITHIN THE BOARD'S JU-RISDICTION BUT NOT AN ITEM ON TODAY'S AGENDA DISCUSSION ITEMS 3. APPROVE CHANGE ORDER NO. 1 TO THE CONTRACT WITH LAYFIELD ENVI-RONMENTAL SYSTEMS CORPORATION FOR THE 624-1 RESERVOIR PROJECT IN AN AMOUNT NOT-TO-EXCEED $183,026, AND INCREASE THE CAPITAL IM-PROVEMENT PROGRAM (CIP) P2477 BUDGET IN THE AMOUNT OF $200,000 (MARCHIORO) [5 minutes] 4. APPROVE CHANGE ORDER NO. 1 TO THE CONTRACT WITH SEPULVEDA CON-STRUCTION FOR THE 30-INCH POTABLE WATER PIPELINE IN HUNTE PARK-WAY PROJECT IN AN AMOUNT NOT-TO-EXCEED $109,223.44, AND INCREASE THE CAPITAL IMPROVEMENT PROGRAM (CIP) BUDGET IN THE AMOUNT OF $135,000 (MARTIN) [5 minutes] 5. APPROVE THE WATER SUPPLY ASSESSMENT REPORTS DATED JANUARY 2013 FOR THE OTAY TECH CENTRE PROJECT AND THE OTAY PLAZA PROJECT 6. INFORMATIONAL UPDATE ON THE SECOND QUARTER FISCAL YEAR 2013 CAP-ITAL IMPROVEMENT PROGRAM REPORT (MARTIN) [5 minutes] 7. SAN DIEGO COUNTY WATER AUTHORITY UPDATE (WATTON) [10 minutes]
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8. ADJOURNMENT BOARD MEMBERS ATTENDING: David Gonzalez, Chair Gary Croucher All items appearing on this agenda, whether or not expressly listed for action, may be delibe-rated and may be subject to action by the Board. The Agenda, and any attachments containing written information, are available at the Dis-trict’s website at www.otaywater.gov. Written changes to any items to be considered at the open meeting, or to any attachments, will be posted on the District’s website. Copies of the Agenda and all attachments are also available through the District Secretary by contacting her at (619) 670-2280. If you have any disability that would require accommodation in order to enable you to partici-pate in this meeting, please call the District Secretary at 670-2280 at least 24 hours prior to the meeting. Certification of Posting I certify that on February 15, 2013 I posted a copy of the foregoing agenda near the regular meeting place of the Board of Directors of Otay Water District, said time being at least 24 hours in advance of the meeting of the Board of Directors (Government Code Section
§54954.2). Executed at Spring Valley, California on February 15, 2013. /s/ Susan Cruz, District Secretary
STAFF REPORT
TYPE MEETING: Regular Board
MEETING DATE: March 6, 2013
SUBMITTED BY:
Jeff Marchioro
Senior Civil Engineer
Ron Ripperger
Engineering Manager
PROJECT: P2477-
001103
DIV. NO. 1
APPROVED BY:
Rod Posada, Chief, Engineering
German Alvarez, Asst. General Manager
Mark Watton, General Manager
SUBJECT: Approve Change Order No. 1 to the Contract with Layfield
Environmental Systems Corporation for the 624-1 Reservoir
Project and Increase the CIP P2477 Budget in an amount of
$200,000
GENERAL MANAGER’S RECOMMENDATION:
That the Otay Water District (District) Board of Directors (Board)
approve Change Order No. 1 to the existing contract with Layfield
Environmental Systems Corporation (Layfield) in an amount not-to-
exceed $183,026 for the Floating Cover Replacement at the 624-1
Reservoir Project and to increase the CIP P2477 budget in the amount
of $200,000 (see Exhibit A for Project location).
COMMITTEE ACTION:
Please see Attachment A.
PURPOSE:
To obtain Board authorization for the General Manager to approve
Change Order No. 1 (see Exhibit B) to the existing contract with
Layfield in an amount not-to-exceed $183,026 for the Floating Cover
Replacement at the 624-1 Reservoir Project and to increase the CIP
P2477 budget in the amount of $200,000.
AGENDA ITEM 3
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ANALYSIS:
At the October 9, 2012 Board Meeting, the Board awarded a
construction contract in an amount of $497,050 to Layfield to replace
the 624-1 Reservoir floating cover and protect, clean, and inspect
the existing liner.
The reservoir was originally fitted with a chlorosulfanated
polyethylene (CSPE) cover which is also known as “hypalon” in the
early 1980’s. The reservoir was most recently improved and fitted
with a reinforced polypropylene (RPP) liner and floating cover in
1999. The RPP floating cover had been repeatedly repaired to
maintain the integrity of the cover material; however, it became cost
prohibitive to continue to repair the existing cover. It was
reasonable to expect that the existing liner was in good condition
based on manufacturer specifications, the annual dive videos, and
observations made during a previous spot repair of the liner. In
addition, it is reasonable to expect that the cover deteriorated more
quickly compared to the liner because only the cover was exposed to
sunlight. The cover protected the liner from UV degradation.
Layfield demolished and began cleaning the liner the week of
January 28, 2013. During the cleaning, it was observed that the
liner had small bubbles on the surface of it that were mostly
concentrated around the inlet, in the northeast corner of the
reservoir. While lightly brushing the surface with soft bristled
brooms, Layfield noticed that a thin layer (approximately 2 mils
thick) was beginning to peel from the liner surface in long strips.
The bubbling and peeling issue appeared to extend up the slope about
seven feet. Layfield also noticed seam failures along the butt seam
at the toe of slope.
Layfield recommended total replacement of the liner based on their
theory that all liner seams have failed or will continue to fail due
to liner peeling; however, a leak test performed on the bottom of the
reservoir did not find leaks. Leak testing at the toe of the slope
and in the slopes were inconclusive. The peeling thin layer could
slough off and enter the distribution system and damage mechanical
systems. Layfield stated that they have never seen this type of
failure before.
Staff performed a life cycled cost analysis for the replacement of
the liner and cover with different material combinations
(unreinforced polypropylene liner/RPP cover, RPP liner/RPP cover, RPP
liner/CSPE cover, and CSPE liner/RPP cover) and concluded that RPP
liner/RPP cover was the best alternative based on five (5) options
quoted by Layfield. The analysis considered replacement frequencies
of materials with dissimilar warranties for the various material
combinations. The advantage of the RPP liner/RPP cover option was
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that the liner and cover would have the same warranty duration (20-
years). Also, Layfield would take the partially fabricated and
delivered RPP material currently intended for the cover and install
it as the liner to minimize the amount of time that the reservoir
will be out of service.
Staff recommends Layfield for the liner replacement work because
Layfield’s quotations appeared competitive and fair based on a
detailed review of Layfield’s bid proposal/schedule of values and a
review of cost estimates in the design consultant’s (Atkin’s)
preliminary design report. Competitively bidding and/or contracting
the liner replacement work separately is not pragmatic. A single
contractor should complete installation of both the liner and cover
to provide a single point of responsibility. As detailed in the
October 9, 2012 staff report, there are very few contractors in the
continental United States that are commonly known to install the
“mechanically tensioned” style cover that is currently in use at the
624-1 Reservoir; and it is unlikely that qualified non-local
contractors can compete with Layfield on this Change Order.
The liner and cover material installed in 1999 was provided with a
20-year warranty. Layfield reported that the material manufacturer
(JPS Elastomerics Corp.) is no longer in business. A sample warranty
provided in the 1999 membrane material construction submittal implies
that the warranty covers material replacement cost based on the
prorated amount of time in service only. Staff did not pursue a
warranty claim for the cover because the cover previously required
spot repairs and the warranty provides material replacement for only
the spot repairs. The liner appears to have a complete failure which
may facilitate a warranty claim for the liner. Based on the amount
of time remaining in the warranty, and the approximate current liner
material cost ($100,000), a possible warranty claim amount would be
on the order of $25,000 for the liner only. Staff is discussing
options with Legal Counsel.
FISCAL IMPACT: Joe Beachem, Chief Financial Officer
The Fiscal Year 2013 budget for CIP P2477 is $800,000. Total
expenditures, plus outstanding commitments and forecast, including
this contract, are $1,000,000. See Attachment B for budget detail.
Based on a review of the financial budget, the Project Manager
anticipates that with a budget increase of $200,000 the Project will
be completed within the new budget amount of $1,000,000.
Finance has determined that 100% of the funding is available from the
Replacement Fund for CIP P2477 including the $200,000 increase in
budget. It anticipated that the actual overall CIP expenditures in
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Fiscal Year 2013 will be well below the overall CIP budget making
sufficient reserves available to fund this budget increase. The
impact to the rolling 6-year CIP budget (fiscal years 2013 through
2019 budget) would be minor.
STRATEGIC GOAL:
This Project supports the District’s Mission statement, “To provide
high value water and wastewater services to the customers of the Otay
Water District in a professional, effective, and efficient manner”
and the General Manager’s Vision, “A District that is at the
forefront in innovations to provide water services at affordable
rates, with a reputation for outstanding customer service.”
LEGAL IMPACT:
Staff is discussing options for a possible warranty claim against the
defunct material manufacturer (JPS Elastomerics Corp.) and/or JPS’s
insurer (see discussion above).
JM/RR:jf
P:\WORKING\CIP P2477 Reservoir Cover Replacement\Staff Reports\BD 3-6-13, Staff Report, 624-1 Res Floating Cvr Repl.docx
Attachments: Attachment A – Committee Action
Attachment B – Budget Detail
Exhibit A – Location Map
Exhibit B – Change Order No. 1
Exhibit C – Presentation
ATTACHMENT A
SUBJECT/PROJECT:
P2477-001103
Approve Change Order No. 1 to the Contract with Layfield
Environmental Systems Corporation for the 624-1 Reservoir
Project and Increase the CIP P2477 Budget in an amount of
$200,000
COMMITTEE ACTION:
The Engineering, Operations, and Water Resources Committee
(Committee) reviewed this item at a meeting held on February 21,
2013. The Committee supported Staff’s recommendation.
NOTE:
The “Committee Action” is written in anticipation of the Committee
moving the item forward for Board approval. This report will be sent
to the Board as a Committee approved item, or modified to reflect any
discussion or changes as directed from the Committee prior to
presentation to the full Board.
ATTACHMENT B
SUBJECT/PROJECT:
P2477-001103
Approve Change Order No. 1 to the Contract with Layfield
Environmental Systems Corporation for the 624-1 Reservoir
Project and Increase the CIP P2477 Budget in an amount of
$200,000
Date Updated: - 2/4/2013
Budget
1,000,000 CIP Budget1
Planning
Regulatory Agency Fees 50 50 - 50 PETTY CASH CUSTODIAN Planning1 Planning 1
Service Contracts 4,000 4,000 - 4,000 FIRST AMERICAN TITLE CO Planning2 Planning 2
Standard Salaries 18,083 18,083 - 18,083 Planning3 Planning 3
Total Planning 22,133 22,133 - 22,133
Design 001102
Consultant Contracts 1,810 1,810 - 1,810 ALTA LAND SURVEYING INC Design1 Design 1
68,540 68,540 - 68,540 ATKINS Design2 Design 2
Service Contracts 84 84 - 84 SAN DIEGO DAILY TRANSCRIPT Design3 Design 3
1,062 1,062 - 1,062 LAYFIELD ENVIRONMENTAL SYSTEMS Design4 Design 4
1,823 1,547 276 1,823 MAYER REPROGRAPHICS INC Design5 Design 5
Standard Salaries 44,228 44,228 - 44,228 Design6 Design 6
Total Design 117,547 117,271 276 117,547
Construction
Professional Legal Fees 244 244 - 244 STUTZ ARTIANO SHINOFF Construction1 Construction 1
Service Contracts 2,000 2,000 - 2,000 DIVE/CORR INC Construction2 Construction 2
2009 Repair 16,104 16,104 - 16,104 LAYFIELD ENVIRONMENTAL SYSTEMS
Cover Replacement 497,050 - 497,050 497,050 LAYFIELD ENVIRONMENTAL SYSTEMS Construction3 Construction 3
Liner Replacement 183,026 183,026 LAYFIELD ENVIRONMENTAL SYSTEMS
Standard Salaries 20,002 20,002 90,494 110,496 Construction4 Construction 4
26,400 26,400 ALYSON CONSULTING Construction48 Construction 48
15,000 15,000 CONTINGENCY @ 3%Construction49 Construction 49
10,000 10,000 CLOSEOUT Construction50 Construction 50
Total Construction 535,400 38,350 821,970 860,320
Grand Total 675,080 177,754 822,246 1,000,000
675,080 177,754 497,326 675,080 Total1 Total 1
TRUE TRUE FALSE FALSE
Vendor/Comments
Otay Water District
p2477-Res - 624-1 Reservoir Cover Replacement
Committed Expenditures
Outstanding
Commitment &
Forecast
Projected Final
Cost
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OTAY WATER DISTRICT624-1 RESERVOIR FLOATING COVER REPLACEMENTLOCATION MAP
EXHIBIT A CIP P2477
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DIV. 5
DIV. 2
DIV. 3
DIV. 1DIV. 4
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0 250 500Feet
OTAY WATER DISTRICT
2554 SWEETWATER SPRINGS BLVD.,SPRING VALLEY,CA.91978,(619)670-2222
CONTRACT/P.O.CHANGE ORDER No.1
PROJECT/ITEM:Reservoir 624-1 Floating Cover Replacement Project
CONTRACTOR/VENDOR:Layfield Environmental Systems REF.CIP No.:P2477-001103
APPROVED BY:Board REF.P.O.No:716855 DATE:02/12/13
DESCRIPTION:
This Change Order provides for replacement of the existing 624-1 liner pursuant to RFP 01.
REASON:
Subsequent to reservoir draining and liner cleaning activities a differing site condition was discovered.The
existing liner material is blistered resulting in an approximate 2 mil delamination within the top layer of liner
material when scrubbed as part of the cleaning process.The blistering was not evident in design inspection
video or analysis and may result in premature liner failure.This Change Order is necessary to resolve all
costs associated with Contractor Change Order Request No.01 and RFP 001 for liner replacement.
CHANGE P.O.TO READ:
Revise Contract to add $183,026.00 and add 28 days time for a total Contract amount of $680,076.00 with a
Contract Duration of 168 Calendar Days.
ORIGINAL CONTRACT/P.O.AMOUNT:
ADJUSTED AMOUNT FROM PREVIOUS CHANGE:
TOTAL COST OF THIS CHANGE ORDER:
NEW CONTRACT/P.O.AMOUNT IS:
ORIGINAL CONTRACT COMPLETION DATE:
CONTRACT/P.O.TIME AFFECTED BY THIS CHANGE:
REVISED CONTRACT COMPLETION DATE:
IT IS UNDERSTOOD WITH THE FOLLOWING APPROVALS,THAT THE CONTRACTOR/VENDOR IS AUTHORIZED AND DIRECTED TO MAKE THE
HEREIN DESCRIBED CHANGES.IT IS ALSO AGREED THAT THE TOTAL COST FOR THIS CHANGE ORDER CONSTITUTES FULL AND
COMPLETE COMPENSATION FOR OBLIGATIONS REQUIRED BY THE CONTRACT/P.O.ALL OTHER PROVISIONS AND REQUIREMENTS OF THE
CONTRACT/P.O.REMAIN IN FULL FORCE AND EFFECT.
CONTRACTOR/VpNDpR:STAFF APPROVALS:,
PROJ.MGR :\^^^T/f-DATE:
DIV.MGR:DATE:
CHIEF:DATE:
ASST.GM :DATE:
DISTRICT APPROVAL:
GEN.MANAGER:DATE:_
$
$
$
$
497,050.00
0.00
183,026.00
680,076.00
04/05/13
Yes
05/03/13
SIGNATURE:
NAME:
TITLE:tV(
COMPANY
&ADDRESS:
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LAWCLO
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Mflbtll DATE:
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COPIES"□FILE (Orig )□CONTRACTOR/VENDOR,□CHIEF-ENGINEERING,□CHIEF-FINANCE,□ENGR.MGR.
□ACCTS PAYABLE,□INSPECTION,□PROJ.MGR.,□ENGR.SECRETARY,□PURCHASING,□PROJECT BINDER
CHANGE ORDER LOG
Reservoir 624-1 Floating Cover Replacement P2477-001103
CO.
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3940
AMOUNT
$183,026.00
APPROVED
BY
Board
DATE DESCRIPTION
Replace Existing Liner
TYPE CO.
Total C.O.'s To Date:
Original Contract Amount:
$183,026.00
$497,050.00
36.8%
Current Contract Amount:
Change Order Breakdown for the Month:
Month NetC.O.$Limit Authorization
$680,076.00
Absolute C.O.$Absolute CO.%
2/13 $0.00 $5,000/5%PM/Supervisor
$10,000/10%Manager
$15,000/20%Chief
$50,000/30%GM
$0.00
$0.00
$0.00
$0.00
0.0%
0.0%
0.0%
0.0%
Reservoir 624-1 (Patzig)
Floating Cover Replacement
March 6, 2013
Change Order No. 1 and Budget Increase for:
Presentation Outline
1.Project Overview
2.Existing Reservoir Description
3.Demolition
4.Change Order/Budget Increase
5.Schedule
2
Project Overview
Potable water reservoir cover/liner replacement
12.4 million gallon
Originally used for agriculture.
Chlorosulfanated polyethylene (CSPE) cover
which is also known as “hypalon” in the early 80’s
Reinforced polypropylene (RPP) liner and floating
cover in 1999.
Normal maintenance (15-20 year frequency)
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11
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Life Cycle Cost analysis of five different Layfield
quoted options with different combinations of
materials
Layfield’s quotations appeared competitive and fair
$183,026 Change Order
$200,000 CIP budget increase
1 month time increase
Change Order
13
Contract Award Oct 2012 (complete)
Demolition of existing cover Jan 2013 (complete)
Installation of new liner/cover Mar 2013
Construction Completion April 2013
Project Schedule
14
Questions?
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STAFF REPORT
TYPE MEETING: Regular Board
MEETING DATE: March 6, 2013
SUBMITTED BY:
Dan Martin
Engineering Manager
PROJECT: P2514-001103
DIV. NO. 5
APPROVED BY:
Rod Posada, Chief, Engineering
German Alvarez, Assistant General Manager
Mark Watton, General Manager
SUBJECT: Approve Change Order No. 1 to the Contract with Sepulveda
Construction for the 30-Inch Potable Water Pipeline in Hunte
Parkway Project and Increase the CIP P2514 Budget in the
amount of $135,000
GENERAL MANAGER’S RECOMMENDATION:
That the Otay Water District (District) Board of Directors (Board)
approve Change Order No. 1 to the existing contract with Sepulveda
Construction in an amount not-to-exceed of $109,223.44 for the 30-
Inch Potable Water Pipeline in Hunte Parkway Project and to authorize
an increase in the amount of $135,000 to an overall budget of
$1,685,000 (see Exhibit A for Project location).
COMMITTEE ACTION:
Please see Attachment A.
PURPOSE:
To obtain Board authorization for the General Manager to execute
Change Order No. 1 in an amount not-to-exceed $109,223.44 to the
existing contract with Sepulveda Construction for the 30-Inch Potable
Water Pipeline in Hunte Parkway Project and obtain Board approval to
increase the CIP P2514 budget in the amount of $135,000.
AGENDA ITEM 4
2
ANALYSIS:
At the March 7, 2012 Board Meeting, the Board awarded a construction
contract in an amount of $1,212,257.13 to Sepulveda Construction for
the 30-Inch Potable Water Pipeline in Hunte Parkway Project.
The Project consists of the installation of approximately 2,240
linear feet of 30-inch polyurethane coated, cement mortar lined,
steel cylinder potable water pipeline in Hunte Parkway from Proctor
Valley Road to the entrance of the District’s Use Area adjacent to
the Salt Creek Golf Course in Chula Vista.
This pipeline is needed to eliminate high head losses experienced
during the morning peak demand periods in the existing 980 Pressure
Zone. The pipeline is being installed parallel to the existing 20-
inch 980 Pipeline in Hunte Parkway and will also serve to eliminate
the low pressures currently experienced in the 980 Zone.
Change Order No. 1 (Exhibit B) includes a variety of items related to
multiple utility conflicts that were discovered during construction
which required a redesign of the water main. These utility conflicts
include existing electrical, gas, cable television, sewer, and
irrigation controller conduits which in summary were either not shown
or shown in a different location than included in the original
contract plans. Additionally, the contractor encountered caving
soils on the Project and an additional 30-inch Class 150 Butterfly
Valve was required, but not reflected in the quantities of the
contract’s Bid Schedule. The costs associated with these items total
$140,548.51.
Lastly, this Change Order provides a credit for the use of existing
native material determined during construction to be suitable for the
purposes of backfilling the trench zone for the water line in lieu of
the decomposed granite material required by the contract. This
credit also provides for the disposal of displaced native material
from the pipe zone and aggregate base from the existing structural
section located within the trench zone at the District’s Salt Creek
off-site area. The credit associated with these changes is
<$31,325.07>.
The following is a table summarizing the cost items in Change Order
No. 1. A more detailed description of each item is provided in
Exhibit B:
3
Item Description Amount
1 New alignment due to utility conflicts and
Irrigation Controller line relocations. Caving
soils. Additional 30-inch Class 150 Butterfly
Valve.
$140,548.51
2 Use of existing native material/disposal site <$31,325.07>
Total $109,223.44
Change Order No. 1 also addresses contract time as a result of the
items included in the Change Order. A detailed assessment of the
time associated with each change is provided in Exhibit B. In total,
124 days will be added to the contract which will result in a revised
total contract duration of 334 calendar days as a result of this
Change Order. Additional support for inspection and contract
administration will be required to support the contract through
completion. A forecast for these activities, along with a
contingency for the remaining work, is included in the overall budget
increase request.
In summary, the net increase to the Project for Change Order No. 1 is
$109,223.44 and 124 calendar days. The budget increase request
associated with the changes included in Change Order No. 1,
additional inspection, contract administration and contingency is
$135,000 which amounts to an 8.7% increase in the Project budget.
FISCAL IMPACT: Joe Beachem, Chief Financial Officer
The total budget for CIP P2514, as approved in the FY 2013 budget, is
$1,550,000. Total expenditures, plus outstanding commitments and
forecast, are $1,684,837.00. See Attachment B for budget detail.
Based on a review of the financial budgets, the Project Manager
anticipates that with a budget increase of $135,000 the Project will
be completed within the new budget amount of $1,685,000.
Finance has determined that 100% of the funding is available from the
Expansion Fund for CIP P2514.
STRATEGIC GOAL:
This Project supports the District’s Mission statement, “To provide
high value water and wastewater services to the customers of the Otay
Water District in a professional, effective, and efficient manner”
and the General Manager’s Vision, “A District that is at the
forefront in innovations to provide water services at affordable
rates, with a reputation for outstanding customer service.”
4
LEGAL IMPACT:
None.
DM:jf
P:\WORKING\CIP P2514 PL-30-Inch, 980 Zone, Hunte Pkwy - Proctor Valley\Staff Reports\CO 01\BD 03-06-2013, Change Order No 1 to Sepulveda
Construction, (DM).docx
Attachments: Attachment A – Committee Action
Attachment B – P2514 Budget Detail
Exhibit A – Location Map
Exhibit B – Change Order No. 1
ATTACHMENT A
SUBJECT/PROJECT:
P2514-001103
Approve Change Order No. 1 to the Contract with Sepulveda
Construction for the 30-Inch Potable Water Pipeline in
Hunte Parkway Project and increase the CIP Budget for CIP
P2514 in an amount not-to-exceed $135,000
COMMITTEE ACTION:
The Engineering, Operations, and Water Resources Committee (Committee)
reviewed this item at a meeting held on February 21, 2013. The
Committee supported Staff’s recommendation.
NOTE:
The "Committee Action" is written in anticipation of the Committee
moving the item forward for Board approval. This report will be sent
to the Board as a Committee approved item, or modified to reflect any
discussion or changes as directed from the Committee prior to
presentation to the full Board.
ATTACHMENT B – Budget Detail
SUBJECT/PROJECT:
P2514-001103
Approve Change Order No. 1 to the Contract with Sepulveda
Construction for the 30-Inch Potable Water Pipeline in
Hunte Parkway Project and increase the CIP Budget for CIP
P2514 in an amount not-to-exceed $135,000
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OTAY WATER DISTRICT30-INCH POTABLE WATER PIPELINE IN HUNTE PARKWAYLOCATION MAP
EXHIBIT A CIP P2514
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0 2.5 5Miles
CIP Title - 30-Inch Potable Water Pipeline in Hunte Parkway Project: P2514Consultant/Contractor: Sepulveda Construction
Subproject: 001103
APPROVED
C.O.AMOUNT BY DATE DESCRIPTION TYPE C.O.
1 $109,223.44 Board
Nine Items: Includes resolution for various utility conflicts, a 30-inch butterfly valve, and compensation for impacts due to caving soils. Also adds 124 days to contract.Owner
234567891011121314151617181920212223242526272829303132333435
Total C.O.'s To Date: $109,223.44 9.0%Original Contract Amount:$1,212,257.13Current Contract Amount:$1,321,480.57Month Net C.O.$ Limit Authorization Absolute C.O.$ C.O. %2/13 $109,223.44 $2,000 Insp 0.0%$5,000 PM/Sr. Engr. 0.0%$10,000 DivM 0.0%$15,000 Chief 0.0%$25,000 AGM 0.0%$50,000 GM 0.0%>$50000 Board $109,223.44 9.0%
CHANGE ORDER LOG
P:\WORKING\CIP P2514 PL-30-Inch, 980 Zone, Hunte Pkwy - Proctor Valley\Construction\Change Orders\P2514_Change Order LOG 1 2/12/2013
STAFF REPORT
TYPE MEETING: Regular Board MEETING DATE: March 6, 2013
SUBMITTED BY: Bob Kennedy
Senior Civil Engineer
Ron Ripperger
Engineering Manager
CIP./G.F. NO: D0362-
090131
DIV. NO. 2
APPROVED BY:
Rod Posada, Chief, Engineering
German Alvarez, Asst General Manager
Mark Watton, General Manager
SUBJECT: Approval of Water Supply Assessment Report (January 2013) for
the Otay Tech Centre Project
GENERAL MANAGER’S RECOMMENDATION:
That the Otay Water District (District) Board of Directors
(Board) approves the Water Supply Assessment Report (WSA Report)
dated January 2013 for the Otay Tech Centre Project, as required
by Senate Bill 610 (see Exhibit A for Project location).
COMMITTEE ACTION:
Please see Attachment A.
PURPOSE:
To obtain Board approval of the January 2013 WSA Report for the
Otay Tech Centre Project, as required by Senate Bill 610 (SB
610).
ANALYSIS:
Sunroad Otay Partners, LP submitted an entitlement application
to the County for the development of the 253.1 acre project
(Otay Tech Centre Project). The fifty five (55)
Industrial/Commercial lot tentative map is located within the
East Otay Mesa Specific Plan of the County’s General Plan. The
Planning Commission on March 9, 2012 adopted the environmental
findings and tentative map conditions for the Otay Tech Centre
project including a condition to require a water supply
assessment be submitted to the County of San Diego Department of
AGENDA ITEM 5
2
Planning and Land Use prior to the approval of any permits for
the Otay Tech Centre Project.
SB 610 requires the agency conducting the environmental review
to evaluate whether total water supplies will meet the projected
water demand for certain “projects” that are otherwise subject
to the requirement of the California Environmental Quality Act
(CEQA). SB 610 provides its own definition of “project” in
Water Code Section 10912. The County submitted a request for a
WSA to the District and in response to such request, SB 610
requires that, upon request of the agency conducting the
environmental review, a water purveyor, such as the District,
prepare the water supply assessment to be included in the CEQA
documentation.
The requirements of SB 610 are addressed by the WSA Report for
the Otay Tech Centre Project. Prior to transmittal to the
County, the WSA Report must be approved by the District Board.
Additional information of the intent of SB 610 is provided in
Exhibit B and the Otay Tech Centre Project WSA Report is
attached as Exhibit C.
For the Otay Tech Centre Project, the County is the responsible
agency that requested the SB 610 water supply assessment from
the District, as the water purveyor for the proposed Otay Tech
Centre Project. The request for the WSA Report, in compliance
with SB 610 requirements, was made by the County because the
Otay Tech Centre Project meets or exceeds one or both of the
following SB 610 criteria:
A proposed industrial, manufacturing or processing plant or
industrial park planned to house more than 1,000 persons,
occupying more than 40 acres of land, or having more than
650,000 square feet of area.
A project that would demand an amount of water equivalent
to, or greater than, the amount of water required by a 500
dwelling unit project.
The District, as the proposed water purveyor for the Otay Tech
Centre Project, does not have to comply with the requirements of
Senate Bill 221 (SB 221) because the Project is an industrial
development and SB 221 applies to residential subdivisions.
Pursuant to SB 610, the WSA Report incorporates by reference the
current Urban Water Management Plans and other water resources
planning documents of the District, the San Diego County Water
Authority (Water Authority), and the Metropolitan Water District
3
of Southern California (MWD). The District prepared the WSA
Report in consultation with Dexter Wilson Engineering, Inc. and
the Water Authority which demonstrates and documents that
sufficient water supplies are planned for and are intended to be
made available over a 20-year planning horizon under normal
supply conditions and in single and multiple dry years to meet
the projected demand of the Otay Tech Centre Project and other
planned development projects within the District.
The expected potable water demand for the Otay Tech Centre
Project is 159,510 gallons per day (gpd) or about 178.7 acre-
feet per year (AFY). This is below the demands in the
District’s 2008 Water Resources Master Plan updated November
2010 which estimated 304.3 AFY for the same parcels, but assumed
a higher commercial use for the property. The projected
recycled water demand for the Otay Tech Centre Project is 20,580
gpd or 23.0 AFY, representing about 11% of the total Otay Tech
Centre Project water demand.
MWD’s Integrated Resource Plan (IRP) identifies a mix of
resources (imported and local) that, when implemented, will
provide 100 percent reliability for full-service demands through
the attainment of regional targets set for conservation, local
supplies, State Water Project supplies, Colorado River supplies,
groundwater banking, and water transfers. MWD’s 2010 update to
the IRP (2010 IRP Update) includes a water supply planning
buffer to mitigate the risk associated with implementation of
local and imported supply programs. The planning buffer
identifies an additional increment of water that could
potentially be developed if other supplies are not implemented
as planned. As part of the establishment of the planning
buffer, MWD periodically evaluates supply development to ensure
that the region is not under- or over-developing supplies. If
managed properly, the planning buffer, along with other
alternative supplies, will help ensure that the Southern
California region, including San Diego County, will have
adequate supplies to meet future demands.
The County Water Authority Act, Section 5, Subdivision 11,
states the Water Authority, “as far as practicable, shall
provide each of its member agencies with adequate supplies of
water to meet their expanding and increasing needs.”
The intent of the SB 610 legislation is that the land use
agencies and the water agencies coordinate their efforts in
planning for new development and thus plan for sufficient water
supplies to meet the needs.
4
As per the requirements of SB 610, if the water supply
assessment finds that the supply is sufficient, then the
governing body of the water supplier (District) must approve the
water supply assessment and deliver it to the lead agency
(County) within 90 days. The County’s letter dated January 31,
2013 requested the WSA for the Otay Tech Centre Project. The
deadline for the District to provide a Board approved WSA to the
County is April 30, 2013. An extension can be requested to
provide 30 additional days, if necessary.
Pursuant to SB 610, if the water supply assessment finds overall
supplies are insufficient, the water supplier shall provide to
the lead agency “its plans for acquiring additional water
supplies, setting forth measures that are being undertaken to
acquire and develop those water supplies,” and the water
supplier governing body must approve the assessment and deliver
it to the lead agency within 90 days. If the water supplier
does conclude that additional water supplies are required, the
water supplier should indicate the status or stage of
development of the actions identified in the plans it provides.
Identification of a potential future action in such plans does
not by itself indicate that a decision to approve or to proceed
with the action has been made.
Once either of the two actions listed above are accomplished,
the District’s SB 610 water supply assessment responsibilities
are complete.
Water supply agencies throughout California continue to face
climatological, environmental, legal, and other challenges that
impact water source supply conditions, such as the court ruling
regarding the Sacramento-San Joaquin Delta issues. Challenges
such as these are always present. The regional water supply
agencies, the Water Authority, MWD, and the District
nevertheless fully intend to have sufficient, reliable supplies
to serve the Otay Tech Centre Project.
FISCAL IMPACT: Joe Beachem, Chief Financial Officer
The District has been reimbursed $8,000 for all costs associated
with the preparation of the Otay Tech Centre Project WSA Report.
The reimbursement was accomplished via a $8,000 deposit the
Project proponents placed with the District on September 26,
2012.
STRATEGIC GOAL:
5
The preparation and approval of the Otay Tech Centre Project WSA
Report supports the District’s Mission statement, "To provide
the best quality of water and wastewater services to the
customers of the Otay Water District, in a professional,
effective, and efficient manner” and the District’s Strategic
Goal, in planning for infrastructure and supply to meet current
and future potable water demands.
LEGAL IMPACT:
Approval of a WSA Report for the Otay Tech Centre Project in
form and content satisfactory to the Board of Directors would
allow the District to comply with the requirements of Senate
Bill 610.
BK/RR:jf
P:\WORKING\WO D0362 Sunroad Otay Tech Park\Staff Report\BD 03-06-13, Staff Report, Sunroad Otay Tech Centre WSA , (BK-RR).doc
Attachments: Attachment A – Committee Action
Exhibit A – Project Location Map
Exhibit B – Explanation of the Intent of SB 610
Exhibit C – Otay Tech Centre WSA Report
Exhibit D – Presentation
ATTACHMENT A
SUBJECT/PROJECT:
D0362-090131
Approval of Water Supply Assessment Report (January 2013)
for the Otay Tech Centre Project
COMMITTEE ACTION:
The Engineering, Operations, and Water Resources Committee
(Committee) reviewed this item at a meeting held on February 21,
2013. The Committee supported Staff’s recommendation.
NOTE:
The “Committee Action” is written in anticipation of the
Committee moving the item forward for Board approval. This
report will be sent to the Board as a Committee approved item,
or modified to reflect any discussion or changes as directed
from the Committee prior to presentation to the full Board.
EXHIBIT B
Background Information
The Otay Water District (District) prepared the January 2013 Water Supply Assessment
Report (WSA Report) for the Otay Tech Centre Project development at the request of
the County of San Diego. The County’s WSA request letter dated January 28, 2013
was received by the District on January 28, 2013 so the 90-day deadline for the District
to provide the Board an approved WSA Report to the County ends April 27, 2013.
Sunroad Otay Partners, LP submitted an entitlement application to the County for the
development of the 253.1 acre project.
The Otay Tech Centre Project is located within the jurisdictions of the District, the San
Diego County Water Authority (Water Authority), and the Metropolitan Water District of
Southern California (MWD). See Exhibit A for Project location. To obtain permanent
imported water supply service, land areas are required to be within the jurisdictions of
the District, Water Authority, and MWD.
The January 2013 WSA Report for the Otay Tech Centre Project has been prepared by
the District in consultation with Dexter Wilson Engineering, Inc., the Water Authority,
and the County pursuant to Public Resources Code Section 21151.9 and California
Water Code Sections 10631, 10656, 10910, 10911, 10912, and 10915 referred to as
Senate Bill (SB) 610. SB 610 amended state law, effective January 1, 2002, intending
to improve the link between information on water supply availability and certain land use
decisions made by cities, counties, and other regulatory agencies. SB 610 requires that
the water purveyor of the public water system prepare a water supply assessment to be
included in the California Environmental Quality Act (CEQA) environmental
documentation and approval process of certain proposed projects. The requirements of
SB 610 are addressed in the January 2013 WSA Report for the Otay Tech Centre
Project.
The Otay Tech Centre Project is located along the north side of Otay Mesa Road, just
east of State Route 125. Refer to Exhibit A for a vicinity map of the proposed Otay
Tech Centre Project. The project is proposed to be located on 253.1 acres within the
East Otay Mesa Specific Plan of the County of San Diego (County) General Plan. The
Otay Tech Centre Project is planned to include 55 Industrial/Commercial business park
lots ranging from 1.1 to 5.25 acres in size. One of these lots will be open space and two
lots will be used for support facilities (storm water detention and sewer lift station). Of
the 52 lots to be developed, 9 of these lots will be in a commercial overlay zone.
The expected potable water demand for the Otay Tech Centre Project is 159,510
gallons per day (gpd) or about 178.7 acre feet per year (AFY). This is lower than the
demand estimate in the District’s WRMP Update which estimated 304.3 AFY. The
projected recycled water demand for the Otay Tech Centre Project is approximately
20,580 gpd or 23.0 AFY, representing about 11% of the total Otay Tech Centre Project
water demand.
The District currently depends on the Water Authority and the MWD for all of its potable
water supplies and regional water resource planning.
The District’s 2010 Urban Water Management Plan (UWMP) relies heavily on the
UWMP’s and Integrated Water Resources Plans (IRPs) of the Water Authority and
MWD for documentation of supplies available to meet projected demands. These plans
are developed to manage the uncertainties and variability of multiple supply sources
and demands over the long-term through preferred water resources strategy adoption
and resource development target approvals for implementation.
MWD in October 2010 approved the update of their Integrated Water Resources Plan
(IRP). The 2010 IRP Update describes an adaptive management approach to mitigate
against future water supply uncertainty. The new uncertainties that are significantly
affecting California’s water resources include:
The Federal Court ruling on previous operational limits on Sacramento-San
Joaquin Delta to protect the Delta species. Water agencies are still trying to
determine what effect the ruling will have on State Water Project (SWP)
deliveries. Actual supply curtailments for MWD are contingent upon fish
distribution, behavioral patterns, weather, Delta flow conditions, and how water
supply reductions are divided between state and federal projects.
Periodic extended drought conditions.
These uncertainties have rightly caused concern among Southern California water
supply agencies regarding the validity of the current water supply documentation.
MWD is currently involved in several proceedings concerning Delta operations to
evaluate and address environmental concerns. In addition, at the State level, the Delta
Vision and Bay-Delta Conservation Plan processes are defining long-term solutions for
the Delta.
The SWP represents approximately 9% of MWD’s 2025 Dry Resources Mix with the
supply buffer included. A 22% cutback in SWP supply represents an overall 2% (22%
of 9% is 2%) cutback in MWD supplies in 2025. Neither the Water Authority nor MWD
has stated that there is insufficient water for future planning in Southern California.
Each agency is in the process of reassessing and reallocating their water resources.
Under preferential rights, MWD can allocate water without regard to historic water
purchases or dependence on MWD. Therefore, the Water Authority and its member
agencies are taking measures to reduce dependence on MWD through development of
additional supplies and a water supply portfolio that would not be jeopardized by a
preferential rights allocation.
As calculated by MWD (December 11, 2012), the Water Authority’s current preferential
right is 17.22% of MWD’s supply, while the Water Authority accounted for approximately
25% of MWD’s total revenue. So MWD could theoretically cut back the Water
Authority’s supply and theoretically, the Water Authority should have alternative water
supply sources to make up for the difference. In the Water Authority’s 2010 UWMP,
they had already planned to reduce reliance on MWD supplies. This reduction is
planned to be achieved through diversification of their water supply portfolio.
The Water Authority’s Drought Management Plan (May 2006) provides the Water
Authority and its member agencies with a series of potential actions to engage when
faced with a shortage of imported water supplies due to prolonged drought conditions.
Such actions help avoid or minimize impacts of shortages and ensure an equitable
allocation of supplies throughout the San Diego County region.
The Otay Water District Board of Directors could acknowledge the ever-present
challenge of balancing water supply with demand and the inherent need to possess a
flexible and adaptable water supply implementation strategy that can be relied upon
during normal and dry weather conditions. The responsible regional water supply
agencies have and will continue to adapt their resource plans and strategies to meet
climatological, environmental, and legal challenges so that they may continue to provide
water supplies to their service areas. The regional water suppliers (i.e., the Water
Authority and MWD), along with the District, fully intend to maintain sufficient reliable
supplies through the 20-year planning horizon under normal, single, and multiple dry
year conditions to meet projected demand of the Otay Tech Centre Project, along with
existing and other planned development projects within the District’s service area.
If the regional water suppliers determine additional water supplies will be required, or in
this case, that water supply portfolios need to be reassessed and redistributed with the
intent to serve the existing and future water needs throughout Southern California, the
agencies must indicate the status or stage of development of actions identified in the
plans they provide. MWD’s 2010 IRP update will then cause the Water Authority to
update its IRP, which will then provide the District with the necessary water supply
documentation. Identification of a potential future action in such plans does not by itself
indicate that a decision to approve or to proceed with the action has been made. The
District’s Board approval of the Otay Tech Centre Project WSA Report does not in any
way guarantee water supply to the Otay Tech Centre Project.
Alternatively, if the WSA Report is written to state that water supply is or will be
unavailable; the District must include, in the assessment, a plan to acquire additional
water supplies. At this time, the District should not state there is insufficient water
supply.
So the best the District can do right now is to state the current water supply situation
clearly, indicating intent to provide supply through reassessment and reallocation by the
regional, as well as, the local water suppliers. In doing so, it is believed that the Board
has met the intent of the SB 610 statute, that the land use agencies and the water
agencies are coordinating their efforts in planning water supplies for new development.
With District Board approval of the Otay Tech Centre Project WSA Report, the Project
proponents can proceed with the draft environmental documentation required for the
CEQA review process. The water supply issues will be addressed in these
environmental documents, consistent with the WSA Report.
The District, as well as others, can comment on the draft EIR with recommendations
that water conservation measures and actions be employed on the Otay Tech Centre
Project.
Some recent actions regarding water supply assessments and verification reports by
Otay Water District are as follows:
The Otay Water District Board approved in July 2007 the Eastern Urban Center
Water Supply and Assessment Report.
The Board approved the Judd Company Otay Crossings Commerce Park water
supply assessment report on December 5, 2007.
The Board approved the Otay Ranch L.P. Otay Ranch Preserve and Resort
Project Water Supply Assessment and Verification Report on February 4, 2009.
The Board approved water supply assessment and verification reports for the
City of Chula Vista Village 8 West Sectional Plan Area and Village 9 Sectional
Plan Are on January 5, 2011.
The Board approved the water supply assessment report for the San Diego-
Tijuana Cross Border Facility on February 2, 2011.
The Board approved the water supply assessment for the County of San Diego
Rabago Technology Park on April 6, 2011.
The Board approved the water supply assessment report for the Pio Pico Energy
Center Project on October 5, 2011.
The Board approved the water supply assessment report for the Hawano Project
on March 7, 2012.
Water supplies necessary to serve the demands of the proposed Otay Tech Centre
Project, along with existing and other projected future users, as well as the actions
necessary to develop these supplies, have been identified in the water supply planning
documents of the District, the Water Authority, and MWD.
The WSA Report includes, among other information, an identification of existing water
supply entitlements, water rights, water service contracts, or agreements relevant to the
identified water supply needs for the proposed Otay Tech Centre Project. The WSA
Report demonstrates and documents that sufficient water supplies are planned and are
intended to be available over a 20-year planning horizon, under normal conditions and
in single and multiple dry years, to meet the projected demand of the proposed Otay
Tech Centre Project and the existing and other planned development projects within the
District.
Accordingly, after approval of a WSA Report for the Otay Tech Centre Project by the
District's Board of Directors, the WSA Report may be used to comply with the
requirements of the legislation enacted by Senate Bills 610 as follows:
Senate Bill (SB) 610 Water Supply Assessment: The District's Board of Directors
approved WSA Report may be incorporated into the California Environmental
Quality Act (CEQA) compliance process for the Otay Tech Centre Project as a water
supply assessment report consistent with the requirements of the legislation enacted
by SB 610. The County of San Diego, as lead agency under the CEQA for the Otay
Tech Centre Project environmental documentation, may cite the approved WSA
Report as evidence that a sufficient water supply is planned and intended to be
available to serve the Otay Tech Centre Project.
OTAY WATER DISTRICT
WATER SUPPLY ASSESSMENT REPORT
for the
Otay Tech Centre Project
D0362-090131
Prepared by:
Bob Kennedy, P.E.
Senior Civil Engineer
Otay Water District
In consultation with
Dexter Wilson Engineering, Inc.
And
San Diego County Water Authority
January 2013
Otay Water District
Water Supply Assessment Report
Otay Tech Centre Project
Otay Water District
Water Supply Assessment Report
January 2013
Otay Tech Centre Project
Table of Contents
Executive Summary .................................................................................................................................... 1
Section 1 - Purpose ...................................................................................................................................... 5
Section 2 - Findings ..................................................................................................................................... 6
Section 3 - Project Description .................................................................................................................. 9
Section 4 – Otay Water District ................................................................................................................. 9
Section 5 – Historical and Projected Water Demands .......................................................................... 12
5.1 Demand Management (Water Conservation) ............................................. 18
Section 6 - Existing and Projected Supplies ........................................................................................... 20
6.1 Metropolitan Water District of Southern California 2010
Regional Urban Water Management Plan .................................................. 21
6.1.2 MWD Capital Investment Plan ....................................... 22
6.2 San Diego County Water Authority Regional Water Supplies ................. 23
6.2.1 Availability of Sufficient Supplies and Plans for
Acquiring Additional Supplies ........................................................ 24
6.2.1.2 All-American Canal and Coachella Canal
Lining Projects ................................................................ 30
6.2.1.3 Carlsbad Seawater Desalination Project ......................... 34
6.2.2 Water Authority Capital Improvement
Program and Financial Information ................................ 39
6.3 Otay Water District ....................................................................................... 40
6.3.1 Availability of Sufficient Supplies and Plans for
Acquiring Additional Supplies ........................................................ 41
6.3.1.1 Imported and Regional Supplies ..................................... 42
6.3.1.2 Recycled Water Supplies ................................................ 44
Section 7 – Conclusion: Availability of Sufficient Supplies .................................................................. 52
Source Documents ..................................................................................................................................... 57
Appendices
Appendix A: Otay Tech Centre Project Vicinity Map
Appendix B: Otay Tech Centre Project Development Plan
Otay Water District
Water Supply Assessment Report
Otay Tech Centre Project
1
Otay Water District
Water Supply Assessment Report
January 2013
Otay Tech Centre Project
Executive Summary
The Otay Water District (OWD) prepared this Water Supply Assessment Report (WSA
Report) at the request of the County of San Diego (County) for the Otay Tech Centre Project.
Sunroad Otay Partners, LP submitted an entitlement application to the County for the
development of the Otay Tech Centre Project.
Otay Tech Centre Project Overview and Water Use
The Otay Tech Centre Project is located within the jurisdictions of the OWD, the San Diego
County Water Authority (Water Authority), and the Metropolitan Water District of Southern
California (MWD). To obtain permanent imported water supply service, land areas are
required to be within the jurisdictions of the OWD, Water Authority, and MWD.
Sunroad Otay Partners, LP submitted an entitlement application to the County for the
development of the 253.1 acre parcel (Otay Tech Centre Project). The fifty five (55)
Industrial/Commercial lot tentative map is located within the East Otay Mesa Specific Plan of
the County’s General Plan along the north side of Otay Mesa Road, just east of State Route
125.
The expected potable water demand for the Otay Tech Centre Project is 159,510 gallons per
day (gpd) or about 178.7 acre feet per year (AFY). This is below the projected demands in
the District’s 2008 Water Resources Master Plan updated November 2010 (WRMP Update)
which estimated 304.3 AFY for the same parcels, but assumed a higher commercial use for
the property. The projected recycled water demand for the Otay Tech Centre Project is
20,580 gpd or 23.0 AFY, representing about 11% of the total Otay Tech Centre Project water
demand.
The Otay Tech Centre Project development components are required to use recycled water for
irrigation and other potential purposes. The primary benefit of using recycled water is that it
will offset the potable water demand by an estimated 23.0 AFY. The Otay WD WRMP
Otay Water District
Water Supply Assessment Report
Otay Tech Centre Project
2
Update and 2010 Urban Water Management Plan (UWMP) anticipated that the Otay Tech
Centre Project would use both potable and recycled water.
Planned Imported Water Supplies from the Water Authority and MWD
The Water Authority and MWD have an established process that ensures supplies are being
planned to meet future growth. Any annexations and revisions to established land use plans
are captured in the San Diego Association of Governments (SANDAG) updated forecasts for
land use planning, demographics, and economic projections. SANDAG serves as the
regional, intergovernmental planning agency that develops and provides forecast information.
The Water Authority and MWD update their demand forecasts and supply needs based on the
most recent SANDAG forecast approximately every five years to coincide with preparation of
their Urban Water Management Plans (UWMP). Prior to the next forecast update, local
jurisdictions with land use authority may require water supply assessment and/or verification
reports for proposed land developments that are not within the OWD, Water Authority, or
MWD jurisdictions (i.e. pending or proposed annexations) or that have revised land use plans
with either lower or higher development intensities than reflected in the existing growth
forecasts. Proposed land areas with pending or proposed annexations, or revised land use
plans, typically result in creating higher demand and supply requirements than previously
anticipated. The OWD, Water Authority, and MWD next demand forecast and supply
requirements and associated planning documents would then capture any increase or decrease
in demands and required supplies as a result of annexations or revised land use planning
decisions.
The California Urban Water Management Planning Act (Act), which is included in the
California Water Code, requires all urban water suppliers within the state to prepare an
UWMP and update it every five years. The purpose and importance of the UWMP has
evolved since it was first required 25 years ago. State agencies and the public frequently use
the document to determine if agencies are planning adequately to reliably meet future
demands. As such, UWMPs serve as an important element in documenting supply
availability for the purpose of compliance with state laws, Senate Bill 610, linking water
supply sufficiency to large land-use development approval. Agencies must also have a
UWMP prepared, pursuant to the Act, in order to be eligible for state funding and drought
assistance.
MWD’s 2010 IRP long term water plan offers a strategy to protect the region from future
supply shortages, with an emphasis on water-use efficiency through conservation and local
supply development. The 2010 IRP includes a planning buffer supply intended to mitigate
against the risks associated with implementation of local and imported supply programs and
for the risk that future demands could be higher than projected. The planning buffer identifies
an additional increment of water that could potentially be developed when needed or if other
supplies are not fully implemented as planned. As part of implementation of the planning
buffer, MWD periodically evaluates supply development, supply conditions, and projected
Otay Water District
Water Supply Assessment Report
Otay Tech Centre Project
3
demands to ensure that the region is not under or over developing supplies. Managed
properly, the planning buffer will help ensure that the southern California region, including
San Diego County, will have adequate water supplies to meet long-term future demands.
Water supply agencies throughout California continue to face climate, environmental, legal,
and other challenges that impact water source supply conditions, such as the court rulings
regarding the Sacramento-San Joaquin Delta issues and the current ongoing drought
impacting the western states. Challenges such as these essentially always will be present.
The regional water supply agencies, the Water Authority and MWD, along with OWD
nevertheless fully intend to have sufficient, reliable supplies to serve demands.
In Section ES-5 of their 2010 Regional Urban Water Management Plan (2010 RUWMP),
MWD states that MWD has supply capacities that would be sufficient to meet expected
demands from 2015 through 2035. MWD has plans for supply implementation and continued
development of a diversified resource mix including programs in the Colorado River
Aqueduct, State Water Project, Central Valley Transfers, local resource projects, and in-
region storage that enables the region to meet its water supply needs. MWD’s 2010 RUWMP
identifies potential reserve supplies in the supply capability analysis (Tables 2-9, 2-10, and 2-
11), which could be available to meet the unanticipated demands such as those related to the
Otay Tech Centre Project.
The County Water Authority Act, Section 5 subdivision 11, states that the Water Authority
“as far as practicable, shall provide each of its member agencies with adequate supplies of
water to meet their expanding and increasing needs.”
As part of preparation of a written water supply assessment report, an agency’s shortage
contingency analysis should be considered in determining sufficiency of supply. Section 11
of the Water Authority’s 2010 UWMP contains a detailed shortage contingency analysis that
addresses a regional catastrophic shortage situation and drought management. The analysis
demonstrates that the Water Authority and its member agencies, through the Emergency
Response Plan, Emergency Storage Project, and Drought Management Plan (DMP) are taking
actions to prepare for and appropriately handle an interruption of water supplies. The DMP,
adopted in May 2006, provides the Water Authority and its member agencies with a series of
potential actions to take when faced with a shortage of imported water supplies from MWD
due to prolonged drought or other supply shortfall conditions. The actions will help the
region avoid or minimize the impacts of shortages and ensure an equitable allocation of
supplies.
Otay Water District Water Supply Development Program
In evaluating the availability of sufficient water supply, the Otay Tech Centre Project will be
required to participate in the water supply development program being implemented by the
OWD. This is intended to be achieved through financial participation in several local and/or
Otay Water District
Water Supply Assessment Report
Otay Tech Centre Project
4
regional water supply development projects envisioned by the OWD. These water supply
projects are in addition to those identified as sustainable supplies in the current Water
Authority and MWD UWMP, IRP, Master Plans, and other planning documents. These new
water supply projects are in response to the regional water supply issues. These new
additional water supply projects are not currently developed and are in various stages of the
planning process. Imported water supplies along with the OWD water supply development
projects supplies are planned to be developed and are intended to increase water supplies to
serve the Otay Tech Centre Project water supply needs and that of other similar situated
development projects. The OWD water supply development program includes but is not
limited to projects such as the Middle Sweetwater River Basin Groundwater Well project, the
North District Recycled Water Supply Concept, the Rosarito Ocean Desalination Facility
project, and the Rancho del Rey Groundwater Well project. The Water Authority and
MWD’s next forecasts and supply planning documents would capture any increase in water
supplies resulting from any new water resources developed by the OWD.
Findings
This WSA Report for the Otay Tech Centre Project has been prepared by the OWD in
consultation with Dexter Wilson Engineering, Inc., the Water Authority, and the County
pursuant to Public Resources Code Section 21151.9 and California Water Code Sections
10631, 10656, 10657, 10910, 10911, 10912, and 10915 referred to as Senate Bill (SB) 610.
SB 610 amended state law, effective January 1, 2002, to improve the link between
information on water supply availability and certain land use decisions made by cities and
counties. SB 610 requires that the water purveyor of the public water system prepare a water
supply assessment to be included in the California Environmental Quality Act (CEQA)
environmental documentation and approval process of certain proposed projects. The County
requested that OWD prepare a water supply assessment as per the requirements of SB 610.
The requirements of SB 610 are being addressed by this WSA Report
The Otay Tech Centre Project development concept exceeds the thresholds contained in the
legislation enacted by SB 610 and therefore requires preparation of a WSA report. The Otay
Tech Centre Project is considered as an industrial development and is not a residential
subdivision project of more than 500 units and hence it is not subject to the requirements of
Senate Bill 221 for preparation of a Water Supply Verification Report.
The WSA Report identifies and describes the processes by which water demand projections
for the proposed Otay Tech Centre Project will be fully included in the water demand and
supply forecasts of the Urban Water Management Plans and other water resources planning
documents of the Water Authority and MWD. Water supplies necessary to serve the demands
of the proposed Otay Tech Centre Project, along with existing and other projected future
users, as well as the actions necessary and status to develop these supplies, have been
identified in the Otay Tech Centre Project WSA Report and will be included in the future
water supply planning documents of the Water Authority and MWD.
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This WSA Report includes, among other information, an identification of existing water
supply entitlements, water rights, water service contracts, water supply projects, or
agreements relevant to the identified water supply needs for the proposed Otay Tech Centre
Project. This WSA Report demonstrates, and documents that sufficient water supplies are
planned for and are intended to be available over a 20-year planning horizon, under normal
conditions and in single and multiple dry years to meet the projected demand of the proposed
Otay Tech Centre Project and the existing and other planned development projects to be
served by the OWD.
Accordingly, after approval of a WSA Report for the Otay Tech Centre Project by the Otay
Water District Board of Directors (Board), the WSA Report may be used to comply with the
requirements of the legislation enacted by Senate Bill 610 as follows:
Senate Bill 610 Water Supply Assessment: The Otay Water District Board approved
Otay Tech Centre Project WSA Report may be incorporated into the California
Environmental Quality Act (CEQA) compliance process for the Otay Tech Centre
Project as a water supply assessment report consistent with the requirements of the
legislation enacted by SB 610. The County, as lead agency under CEQA for the Otay
Tech Centre Project EIR, may cite the approved WSA Report as evidence that a
sufficient water supply is planned for and is intended to be made available to serve the
Otay Tech Centre Project.
Section 1 - Purpose
Sunroad Otay Partners, LP submitted an entitlement application to the County for the
development of the 253.1 acre parcel (Otay Tech Centre Project). The fifty five (55)
Industrial/Commercial lot tentative map is located within the East Otay Mesa Specific Plan of
the County’s General Plan along the north side of Otay Mesa Road, just east of State Route
125. The County requested that the Otay Water District (OWD) prepare a Water Supply
Assessment (WSA) Report for the Otay Tech Centre Project. The Otay Tech Centre Project
description is provided in Section 3 of this WSA Report.
This WSA Report for the Otay Tech Centre Project has been prepared by the OWD in
consultation with Dexter Wilson Engineering, Inc., the San Diego County Water Authority
(Water Authority), and the County pursuant to Public Resources Code Section 21151.9 and
California Water Code Sections 10631, 10656, 10910, 10911, 10912, and 10915 referred to as
Senate Bill (SB) 610. SB 610 amended state law, effective January 1, 2002, intending to
improve the link between information on water supply availability and certain land use
decisions made by cities and counties. SB 610 requires that the water purveyor of the public
water system prepare a water supply assessment to be included in the California
Environmental Quality Act (CEQA) environmental documentation and approval process of
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certain proposed projects. The requirements of SB 610 are being addressed by this WSA
Report.
The Otay Tech Centre Project’s development concept exceeds the thresholds contained in the
legislation enacted by SB 610 and therefore requires preparation of a WSA report. The Otay
Tech Centre Project is considered as an industrial development and is not a residential
subdivision project of more than 500 units and hence it is not subject to the requirements of
Senate Bill 221 for preparation of a Water Supply Verification Report.
This WSA Report evaluates water supplies that are planned to be available during normal,
single dry year, and multiple dry water years during a 20-year planning horizon to meet
existing demands, expected demands of the Otay Tech Centre Project, and reasonably
foreseeable planned future water demands to be served by OWD. The Otay Water District
Board of Directors approved WSA Report is planned to be used by the County in its
evaluation of the Otay Tech Centre Project under the CEQA approval process procedures.
Section 2 - Findings
Sunroad Otay Partners, LP submitted an entitlement application to the County for the
development of the 253.1 acre parcel (Otay Tech Centre Project). The OWD prepared this
WSA Report at the request of the County for the Otay Tech Centre Project.
The Otay Tech Centre Project is located within the jurisdictions of the OWD, the Water
Authority, and the Metropolitan Water District of Southern California (MWD). To obtain
permanent imported water supply service, land areas are required to be within the
jurisdictions of the OWD, Water Authority, and MWD to utilize imported water supply.
The expected potable water demand for the Otay Tech Centre Project is 159,510 gallons per
day (gpd) or about 178.7 acre feet per year (AFY). This is lower than the demand estimate in
the District’s WRMP Update which estimated 304 AFY. The projected recycled water
demand for the Otay Tech Centre Project is approximately 20,580 gpd or 23.0 AFY,
representing about 11% of the total Otay Tech Centre Project water demand.
The Otay Tech Centre Project development proponents are required to use recycled water for
irrigation and other appropriate uses. The primary benefit of using recycled water is that it
will offset the potable water demands by an estimated 23.0 AFY. The WRMP Update and the
2010 Urban Water Management Plan (UWMP) anticipated that the land area to be utilized for
the Otay Tech Centre Project would use both potable and recycled water.
In evaluating the availability of sufficient water supply, the Otay Tech Centre project
proponents are required to participate in the development of alternative water supply
project(s). This can be achieved through payment of the New Water Supply Fee adopted by
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the Otay Water District Board in May 2010. These water supply projects are in addition to
those identified as sustainable supplies in the current Water Authority and MWD UWMP,
IRP, Master Plans, and other planning documents. These new water supply projects are in
response to the regional water supply issues related to the Sacramento-San Joaquin Delta and
the current ongoing western states drought conditions. These new additional water supply
projects are not currently developed and are in various stages of the planning process. A few
examples of these alternative water supply projects include the Middle Sweetwater River
Basin Groundwater Well project, the OWD Desalination project, and the Rancho del Rey
Groundwater Well project. The Water Authority and MWD next forecast and supply
planning documents would capture any increase in water supplies resulting from verifiable
new water resources developed by the OWD.
The Water Authority and MWD have an established process that ensures supplies are being
planned to meet future growth. Any annexations and revisions to established land use plans
are captured in the San Diego Association of Governments (SANDAG) updated forecasts for
land use planning, demographics, and economic projections. SANDAG serves as the
regional, intergovernmental planning agency that develops and provides forecast information.
The Water Authority and MWD update their demand forecasts and supply needs based on the
most recent SANDAG forecast approximately every five years to coincide with preparation of
their urban water management plans. Prior to the next forecast update, local jurisdictions may
require water supply assessment and/or verification reports for proposed land developments
that are not within the OWD, Water Authority, or MWD jurisdictions (i.e. pending or
proposed annexations) or that have revised land use plans with lower or higher land use
intensities than reflected in the existing growth forecasts. Proposed land areas with pending
or proposed annexations, or revised land use plans, typically result in creating higher demand
and supply requirements than anticipated. The OWD, the Water Authority, and MWD next
demand forecast and supply requirements and associated planning documents would then
capture any increase or decrease in demands and required supplies as a result of annexations
or revised land use planning decisions.
This process is utilized by the Water Authority and MWD to document the water supplies
necessary to serve the demands of any proposed development project, along with existing and
other projected future users, as well as the actions necessary to develop any required water
supplies. Through this process the necessary demand and supply information is thus assured
to be identified and incorporated within the water supply planning documents of the Water
Authority and MWD.
This WSA Report includes, among other information, an identification of existing water
supply entitlements, water rights, water service contracts, proposed water supply projects, and
agreements relevant to the identified water supply needs for the proposed Otay Tech Centre
Project. This WSA Report incorporates by reference the current Urban Water Management
Plans and other water resources planning documents of the OWD, the Water Authority, and
MWD. The OWD prepared this WSA Report to assess and document that sufficient water
supplies are planned for and are intended to be acquired to meet projected water demands of
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the Otay Tech Centre Project as well as existing and other reasonably foreseeable planned
development projects within the OWD for a 20-year planning horizon, in normal supply years
and in single dry and multiple dry years.
The Otay Water District 2010 UWMP included a water conservation component to comply
with Senate Bill 7 of the Seventh Extraordinary Session (SBX 7-7), which became effective
February 3, 2010. This new law was the water conservation component to the Delta
legislation package, and seeks to achieve a 20 percent statewide reduction in urban per capita
water use in California by December 31, 2020. Specifically, SBX 7-7 from this Extraordinary
Session requires each urban retail water supplier to develop urban water use targets to help
meet the 20 percent reduction goal by 2020 (20x2020), and an interim water reduction target
by 2015.
OWD has adopted Method 1 to set its 2015 interim and 2020 water use targets. Method 1
requires setting the 2020 water use target to 80 percent of baseline per capita water use target
as provided in the State’s Draft 20x2020 Water Conservation Plan. The OWD 2015 target is
171 gpcd and the 2020 gpcd target at 80 percent of baseline is 152 gpcd.
The OWD’s recent per capita water use has been declining to the point where current water
use already meets the 2020 target for Method 1. This recent decline in per capita water use is
largely due to drought water use restrictions, increased water costs, and economic conditions.
However, OWD’s effective water use awareness campaign and enhanced conservation
mentality of its customers will likely result in some long-term carryover of these reduced
consumption rates.
Based on a normal water supply year, the five-year increments for a 20-year projection
indicate projected potable and recycled water supply is being planned for and is intended to be
acquired to meet the estimated water demand targets of the OWD (44,883 acre-feet (ac-ft) in
2015 to 56,614 ac-ft in 2035 per the Otay Water District 2010 UWMP). Based on dry year
forecasts, the estimated water supply is also being planned for and is intended to be acquired
to meet the projected water demand, during single dry and multiple dry year scenarios. On
average, the dry-year demands are about 6.4 percent higher than the normal year demands.
The OWD recycled water supply is assumed to be drought-proof and not subject to reduction
during dry periods.
Together, these findings assess, demonstrate, and document that sufficient water supplies are
planned for and are intended to be acquired, as well as the actions necessary and status to
develop these supplies are and will be further documented, to serve the proposed Otay Tech
Centre Project and the existing and other reasonably foreseeable planned development
projects within the OWD in both normal and single and multiple dry year forecasts for a 20-
year planning horizon.
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Section 3 - Project Description
The Otay Tech Centre Project is located along the north side of Otay Mesa Road, just east of
State Route 125. Refer to Appendix A for a vicinity map of the proposed Otay Tech Centre
Project. The project is proposed to be located on 253.1 acres within the East Otay Mesa
Specific Plan of the County of San Diego (County) General Plan. Although the proposed
development is located within the municipal boundaries of the County and subject to the
County’s land use jurisdiction, the OWD is the potable and recycled water purveyor. The
Otay Tech Centre Project is within the jurisdictions of the OWD, the Water Authority, and
Metropolitan Water District of Southern California (MWD).
The Otay Tech Centre Project is planned to include 55 Industrial/Commercial business park
lots ranging from 1.1 to 5.25 acres in size. One of these lots will be open space and two lots
will be used for support facilities (storm water detention and sewer lift station). Of the 52 lots
to be developed, 9 of these lots will be in a commercial overlay zone. As each of these lots
develops in the future, it would be subject to the project approval and permitting processes of
the County and OWD. Refer to Appendix B for the proposed development plan of the Otay
Tech Centre Project.
The County has discretionary authority on land use decisions for the Otay Tech Centre Project
and can establish actions and/or permit approval requirements. The projected potable and
recycled water demands associated with the Otay Tech Centre Project have considered the
anticipated County discretionary actions and/or permit approvals and are incorporated into
and used in this WSA Report. The water demands for the proposed Otay Tech Centre Project
are included in the projected water demand estimates provided in Section 5 – Historical and
Projected Water Demands.
Section 4 – Otay Water District
The OWD is a municipal water district formed in 1956 pursuant to the Municipal Water
District Act of 1911 (Water Code §§ 71000 et seq.). The OWD joined the Water Authority as
a member agency in 1956 to acquire the right to purchase and distribute imported water
throughout its service area. The Water Authority is an agency responsible for the wholesale
supply of water to its 24 public agency members in San Diego County.
The OWD currently meets all its potable demands with imported treated water from the Water
Authority. The Water Authority is the agency responsible for the supply of imported water
into San Diego County through its membership in MWD. The Water Authority currently
obtains about half of its imported supply from MWD, but is in the process of further
diversifying its available supplies.
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The OWD provides water service to residential, commercial, industrial, and agricultural
customers, and for environmental and fire protection uses. In addition to providing water
throughout its service area, OWD also provides sewage collection and treatment services to a
portion of its service area known as the Jamacha Basin. The OWD also owns and operates
the Ralph W. Chapman Water Reclamation Facility (RWCWRF) which has an effective
treatment capacity of 1.2 million gallons per day (mgd) or about 1,300 acre feet per year to
produce recycled water. On May 18, 2007, an additional source of recycled water supply of
at least 6 mgd, or about 6,720 acre feet per year, became available to OWD from the City of
San Diego’s South Bay Water Reclamation Plant (SBWRP).
The OWD jurisdictional area is generally located within the south central portion of San
Diego County and includes approximately 125 square miles. The OWD serves portions of the
unincorporated communities of southern El Cajon, La Mesa, Rancho San Diego, Jamul,
Spring Valley, Bonita, and Otay Mesa, the eastern portion of the City of Chula Vista and a
portion of the City of San Diego on Otay Mesa. The OWD jurisdiction boundaries are
roughly bounded on the north by the Padre Dam Municipal Water District, on the northwest
by the Helix Water District, and on the west by the South Bay Irrigation District (Sweetwater
Authority) and the City of San Diego. The southern boundary of OWD is the international
border with Mexico.
The planning area addressed in the Otay Water District WRMP Update and the Otay Water
District 2010 UWMP includes both the land within the jurisdictional boundary of the OWD
and those areas outside of the present OWD boundaries considered to be in the Area of
Influence of the OWD. Figure 1 contained within the Otay Water District 2010 UWMP
shows the jurisdictional boundary of the OWD and the Area of Influence. The planning area
is approximately 143 square miles, of which approximately 125 square miles are within the
OWD current boundaries and approximately 18 square miles are in the Area of Influence.
The area east of OWD is rural and currently not within any water purveyor jurisdiction and
potentially could be served by the OWD in the future if the need for imported water becomes
necessary, as is the case for the Area of Influence.
The City of Chula Vista, the City of San Diego, and the County of San Diego are the three
land use planning agencies within the OWD jurisdiction. Data on forecasts for land use
planning, demographics, economic projections, population, and the future rate of growth
within OWD were obtained from the San Diego Association of Governments (SANDAG).
SANDAG serves as the regional, intergovernmental planning agency that develops and
provides forecast information through the year 2050. Population growth within the OWD
service area is expected to increase from the 2010 figure of approximately 198,616 to an
estimated 284,997 by 2035. Land use information used to develop water demand projections
are based upon Specific or Sectional Planning Areas, the Otay Ranch General Development
Plan/Sub-regional Plan, East Otay Mesa Specific Plan Area, San Diego County Community
Plans, and City of San Diego, City of Chula Vista, and County of San Diego General Plans.
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The OWD long-term historic growth rate has been approximately 4 percent. The growth rate
has significantly slowed due to the current economic conditions and it is expected to slow as
the inventory of developable land is diminished.
Climatic conditions within the OWD service area are characteristically Mediterranean near
the coast, with mild temperatures year round. Inland areas are both hotter in summer and
cooler in winter, with summer temperatures often exceeding 90 degrees and winter
temperatures occasionally dipping to below freezing. Most of the region’s rainfall occurs
during the months of December through March. Average annual rainfall is approximately
12.17 inches per year.
Historic climate data were obtained from the Western Regional Climate Center for Station
042706 (El Cajon). This station was selected because its annual temperature variation is
representative of most of the OWD service area. While there is a station in the City of Chula
Vista, the temperature variation at the City of Chula Vista station is more typical of a coastal
environment than the conditions in most of the OWD service area.
Urban Water Management Plan
In accordance with the California Urban Water Management Planning Act and recent
legislation, the Otay Water District Board of Directors adopted an UWMP in June 2011 and
subsequently submitted the plan to the California Department of Water Resources (DWR).
The Otay Water District 2010 UWMP is currently being reviewed by DWR. As required by
law, the Otay Water District 2010 UWMP includes projected water supplies required to meet
future demands through 2035. In accordance with Water Code Section 10910 (c)(2) and
Government Code Section 66473.7 (c)(3), information from the Otay Water District 2010
UWMP along with supplemental information from the Otay Water District WRMP Update
have been utilized to prepare this WSA Report and are incorporated herein by reference.
The state Legislature passed Senate Bill 7 as part of the Seventh Extraordinary Session (SBX
7-7) on November 10, 2009, which became effective February 3, 2010. This new law was the
water conservation component to the Delta legislation package and seeks to achieve a 20
percent statewide reduction in urban per capita water use in California by December 31, 2020.
Specifically, SBX 7-7 from this Extraordinary Session requires each urban retail water
supplier to develop urban water use targets to help meet the 20 percent reduction goal by 2020
(20x2020), and an interim water reduction target by 2015.
The SBX 7-7 target setting process includes the following: (1) baseline daily per capita water
use; (2) urban water use target; (3) interim water use target; (4) compliance daily per capita
water use, including technical bases and supporting data for those determinations. In order
for an agency to meet its 2020 water use target, each agency can increase its use of recycled
water to offset potable water use and also step up its water conservation measures. The
required water use targets for 2020 and an interim target for 2015 are determined using one of
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four target methods – each method has numerous methodologies. The 2020 urban water use
target may be updated in a supplier’s 2015 UWMP.
In 2015, urban retail water suppliers will be required to report interim compliance followed by
actual compliance in 2020. Interim compliance is halfway between the baseline water use and
2020 target. Baseline, target, and compliance-year water use estimates are required to be
reported in gallons per capita per day (gpcd).
Failure to meet adopted targets will result in the ineligibility of a water supplier to receive
grants or loans administered by the State unless one (1) of two (2) exceptions is met.
Exception one (1) states a water supplier may be eligible if they have submitted a schedule,
financing plan, and budget to DWR for approval to achieve the per capita water use
reductions. Exception two (2) states a water supplier may be eligible if an entire water service
area qualifies as a disadvantaged community.
OWD has adopted Method 1 to set its 2015 interim and 2020 water use targets. Method 1
requires setting the 2020 water use target to 80 percent of baseline per capita water use target
as provided in the State’s Draft 20x2020 Water Conservation Plan. The OWD 2015 target is
171 gpcd and the 2020 gpcd target at 80 percent of baseline is 152 gpcd.
The OWD’s recent per capita water use has been declining to the point where current water
use already meets the 2020 target for Method 1. This recent decline in per capita water use is
largely due to drought water use restrictions, increased water costs, and poor economic
conditions. However, OWD’s effective water use awareness campaign and enhanced
conservation mentality of its customers will likely result in some long-term carryover of these
reduced consumption rates beyond the current drought period.
Section 5 – Historical and Projected Water Demands
The projected demands for OWD are based on Specific or Sectional Planning Areas, the Otay
Ranch General Development Plan/Sub-regional Plan, the East Otay Mesa Specific Plan Area,
San Diego County Community Plans, and City of San Diego, City of Chula Vista, and County
of San Diego General Plans. This land use information is also used by SANDAG as the basis
for its most recent forecast data. This land use information was utilized for the preparation of
the Otay Water District WRMP Update and Otay Water District 2010 UWMP to develop the
forecasted demands and supply requirements.
In 1994, the Water Authority selected the Institute for Water Resources-Municipal and
Industrial Needs (MAIN) computer model to forecast municipal and industrial water use for
the San Diego region. The MAIN model uses demographic and economic data to project
sector-level water demands (i.e. residential and non-residential demands). This econometric
model has over a quarter of a century of practical application and is used by many cities and
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water agencies throughout the United States. The Water Authority’s version of the MAIN
model was modified to reflect the San Diego region’s unique parameters and is known as
CWA-MAIN.
The foundation of the water demand forecast is the underlying demographic and economic
projections. This was a primary reason why, in 1992, the Water Authority and SANDAG
entered into a Memorandum of Agreement (MOA) in which the Water Authority agreed to
use the SANDAG current regional growth forecast for water supply planning purposes. In
addition, the MOA recognizes that water supply reliability must be a component of San Diego
County’s regional growth management strategy required by Proposition C, as passed by the
San Diego County voters in 1988. The MOA ensures a strong linkage between local general
plan land use forecasts and water demand projections and resulting supply needs for the San
Diego region.
Consistent with the previous CWA-MAIN modeling efforts, on February 26, 2010, the
SANDAG Board of Directors accepted the Series 12: 2050 Regional Growth Forecast. The
2050 Regional Growth Forecast will be used by SANDAG as the foundation for the next
Regional Comprehensive Plan update. SANDAG forecasts were used by local governments
for planning, including the Water Authority 2010 UWMP.
The municipal and industrial forecast also included an updated accounting of projected
conservation savings based on projected regional implementation of the California Urban
Water Conservation Council (CUWCC) Best Management Practices and SANDAG
demographic information for the period 2010 through 2035. These savings estimates were
then factored into the baseline municipal and industrial demand forecast.
A separate agricultural model, also used in prior modeling efforts, was used to forecast
agricultural water demands within the Water Authority service area. This model estimates
agricultural demand to be met by the Water Authority’s member agencies based on
agricultural acreage projections provided by SANDAG, crop distribution data derived from
the Department of Water Resources and the California Avocado Commission, and average
crop-type watering requirements based on California Irrigation Management Information
System data.
The Water Authority and MWD update their water demand and supply projections within
their jurisdictions utilizing the SANDAG most recent growth forecast to project future water
demands. This provides for the important strong link between demand and supply projections
to the land use plans of the cities and the county. This provides for consistency between the
retail and wholesale agencies water demand projections, thereby ensuring that adequate
supplies are and will be planned for the OWD existing and future water users. Existing land
use plans, any revisions to land use plans, and annexations are captured in the SANDAG
updated forecasts. The Water Authority and MWD update their demand forecasts based on
the SANDAG most recent forecast approximately every five years to coincide with
preparation of their urban water management plans. Prior to the next forecast update, local
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jurisdictions may require water supply assessment and/or verification reports consistent with
Senate Bills 610 and 221 for proposed land use developments that either have pending or
proposed annexations into the OWD, Water Authority, and MWD or that have revised land
use plans than originally anticipated. The Water Authority and MWD’s next forecasts and
supply planning documents would then capture any increase or decrease in demands caused
by annexations or revised land use plans.
The state of California Business and Professions Code Section 11010 and Government Code
Sections 65867.5, 66455.3, and 66473.7, are referred to as SB 221, requires affirmative
written verification from the water purveyor of the public water system that sufficient water
supplies are to be available for certain residential subdivisions of property prior to approval of
a tentative map. SB 221 compliance does not apply to the Otay Tech Centre Project, as it is
an industrial project and not a residential subdivision.
In evaluating the availability of sufficient water supply, the Otay Tech Centre Project
proponents are required to participate in the development of alternative water supply
project(s). This can be achieved through payment of the New Water Supply Fee adopted by
the OWD Board in May 2010. These water supply projects are in addition to those identified
as sustainable supplies in the current Water Authority and MWD UWMP, IRP, Master Plans,
and other planning documents. These new water supply projects are in response to the
regional water supply issues related to the Sacramento-San Joaquin Delta and the current
ongoing western states drought conditions. These new additional water supply projects are
not currently developed and are in various stages of the planning process. A few examples of
these alternative water supply projects include the Middle Sweetwater River Basin
Groundwater Well project, the OWD Desalination project, and the Rancho del Rey
Groundwater Well project. The Water Authority and MWD next forecast and supply
planning documents would capture any increase in water supplies resulting from verifiable
new water resources developed by the OWD.
In addition, MWD’s 2010 Regional Urban Water Management Plan identified potential
reserve supplies in the supply capability analysis (Tables 2-9, 2-10, and 2-11), which could be
available to meet any unanticipated demands. The Water Authority and MWD’s next
forecasts and supply planning documents would capture any increase in necessary supply
resources resulting from any new water supply resources.
Demand Methodology
The OWD water demand projection methodology in the WRMP Update utilizes a component
land use approach. This is done by applying representative values of water use to the acreage
of each land use type and then aggregating these individual land use demand projections into
an overall total demand for the OWD. This is called the water duty method, and the water
duty is the amount of water used in gallons per day per acre per year. This approach is used
for all the land use types except residential development where a demand per dwelling unit
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was applied. In addition, commercial and industrial water use categories are further
subdivided by type including separate categories for golf courses, schools, jails, prisons,
hospitals, etc. where specific water demands are established.
To determine water duties for the various types of land use, the entire water meter database of
the OWD is utilized and sorted by the appropriate land use types. The metered consumption
records are then examined for each of the land uses, and water duties are determined for the various
types of residential, commercial, industrial, and institutional land uses. For example the water
duty factors for commercial and industrial land uses are estimated using 1,785 and 893 gallons per
day per acre (gpd/acre) respectively. Residential water demand is established based on the same data
but computed on a per-dwelling unit basis. The focus is to ensure that for each of the residential land
use categories (very low, low, medium, and high densities), the demand criteria used is
adequately represented based upon actual data. This method is used because residential land
uses constitute a substantial percentage of the total developable planning area of the OWD.
The WRMP Update calculates potable water demand by taking the gross acreage of a site and
applying a potable water reduction factor (PWRF), which is intended to represent the
percentage of acreage to be served by potable water and that not served by recycled water for
irrigation. For industrial land use, as an example, the PWRF is 0.95 (i.e., 95% of the site is
assumed to be served by potable water, 5% of the site is assumed to be irrigated with recycled
water). The potable net acreage is then multiplied by the unit demand factor corresponding to
its respective land use. This approach is used in the WRMP Update for all the land use types
except residential development where a demand per dwelling unit is applied. In addition,
commercial and industrial water use categories are further subdivided by type including
separate categories for golf courses, schools, jails, prisons, hospitals, etc. where specific water
demands are allocated.
Otay Water District Projected Demand
By applying the established water duties to the proposed land uses, the projected water
demand for the entire OWD planning area at ultimate development is determined. Projected
water demands for the intervening years were determined using growth rate projections
consistent with data obtained from SANDAG and the experience of the OWD.
The historical and projected potable water demands for OWD are shown in Table 1.
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Table 1
Historical and Projected Potable Water Fiscal Year Demands (acre-feet)
Water Use Sectors 2005 2010 2015 2020 2025 2030 2035
Single Family 21,233 17,165 23,633 28,312 33,600 37,211 40,635
Multi-Family 3,095 3,605 3,444 4,126 4,897 5,423 5,922
Commercial & 1,657 2,243 1,844 2,209 2,622 2,904 3,171
Institutional & 2,262 1,867 2,518 3,017 3,580 3,965 4,330
Landscape 6,458 3,732 10,134 12,141 14,408 15,957 17,425
Other 2,426 584 2,700 3,235 3,839 4,252 4,643
Unaccounted for 547 23 608 729 865 958 1,046
Totals 37,668 29,270 44,883 53,768 63,811 70,669 77,171 Source: Otay Water District 2010 UWMP.
The historical and projected recycled water demands for OWD are shown in Table 2.
Table 2
Historical and Projected Recycled Water Fiscal Year Demands (acre-feet)
Water Use Sector 2005 2010 2015 2020 2025 2030 2035
Landscape 4,090 4,000 4,400 5,000 5,800 6,800 8,000
Totals 4,090 4,000 4,400 5,000 5,800 6,800 8,000
Source: Otay Water District 2010 UWMP, Table 10.
Otay Tech Centre Project Projected Water Demand
Using the land use demand projection noted above, the projected potable water demand and
projected recycled water demand for the proposed Otay Tech Centre Project are shown in
Table 3 and Table 4, respectively. The projected potable water demand is 159,510 gpd, or
about 178.7 ac-ft/yr. The projected recycled water demand is 20,580 gpd, or about 23.0 ac-
ft/yr, representing about 11% of the total Otay Tech Centre Project demand.
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Table 3
Otay Tech Centre Project Projected Potable
Water Annual Average Demands
Location (Land Use) Gross
Acreage
Potable
Water
Factor
Net Potable
Acreage/Units Unit Rate Average
Demand
Industrial Lots 136.31 95% 129.49 893 gpd/ac 115,635
Industrial w/commercial overlay 27.31 90% 24.58 1,785 gpd/ac 43,875
Open Space 51.34 0 0 0 0
Circulation 38.18 0 0 0 0
Total 253.14 159,510
gpd
The Otay Tech Centre Project development proponents are required to use recycled water for
irrigation and for other appropriate uses. The primary benefit of using recycled water is that it
will offset the potable water demands by an estimated 23.0 ac-ft/yr. The WRMP Update and
2010 UWMP anticipated that the Otay Tech Centre Project site would use both potable and
recycled water.
Table 4
Otay Tech Centre Project Projected Recycled
Water Average Demands
Location (Land Use) Gross
Acreage
Recycled
Water
Factor
Net Recycled
Acreage Unit Rate Average
Demand
Industrial Lots 136.31 5% 6.82 2,155 14,697
Industrial w/commercial overlay 27.31 10% 2.73 2,155 5,883
Open Space 51.34 0 0 0 0
Circulation 38.18 0 0 0 0
Total 253.14
acres 20,580 gpd
The WRMP Update projected a potable water demand for the project site based on land uses
in the East Otay Mesa Specific Plan. The current development plan does not propose any
changes to the Specific Plan land uses and, therefore, the proposed development has been
accounted for in the Otay Water District planning documents.
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5.1 Demand Management (Water Conservation)
Demand management, or water conservation is a critical part of the Otay Water District 2010
UWMP and its long-term strategy for meeting water supply needs of the OWD customers.
Water conservation is frequently the lowest cost resource available to any water agency. The
goals of the OWD water conservation programs are to:
• Reduce the demand for more expensive, imported water.
• Demonstrate continued commitment to the Best Management Practices (BMP).
• Ensure a reliable water supply.
The OWD is signatory to the Memorandum of Understanding (MOU) Regarding Urban
Water Conservation in California, which created the California Urban Water Conservation
Council (CUWCC) in 1991 in an effort to reduce California’s long-term water demands.
Water conservation programs are developed and implemented on the premise that water
conservation increases the water supply by reducing the demand on available supply, which is
vital to the optimal utilization of a region’s water supply resources. The OWD participates in
many water conservation programs designed and typically operated on a shared cost
participation program basis among the Water Authority, MWD, and their member agencies.
The demands shown in Tables 1 and 2 take into account implementation of water
conservation measures within OWD.
As one of the first signatories to the MOU Regarding Urban Water Conservation in
California, the OWD has made BMP implementation for water conservation the cornerstone
of its conservation programs and a key element in its water resource management strategy.
As a member of the Water Authority, OWD also benefits from regional programs performed
on behalf of its member agencies. The BMP programs implemented by OWD and regional
BMP programs implemented by the Water Authority that benefit all their member agencies
are addressed in the Otay Water District 2010 UWMP. In partnership with the Water
Authority, the County of San Diego, City of San Diego, City of Chula Vista, and developers,
the OWD water conservation efforts are expected to grow and expand. The resulting savings
directly relate to additional available water in the San Diego County region for beneficial use
within the Water Authority service area, including the OWD.
Additional conservation or water use efficiency measures or programs practiced by the OWD
include the following:
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Supervisory Control and Data Acquisition System
The OWD implemented and has operated for many years a Supervisory Control and Data
Acquisition (SCADA) system to control, monitor, and collect data regarding the operation of
the water system. The major facilities that have SCADA capabilities are the water flow
control supply sources, transmission network, pumping stations, and water storage reservoirs.
The SCADA system allows for many and varied useful functions. Some of these functions
provide for operating personnel to monitor the water supply source flow rates, reservoir
levels, turn on or off pumping units, etc. The SCADA system aids in the prevention of water
reservoir overflow events and increases energy efficiency.
Water Conservation Ordinance
California Water Code Sections 375 et seq. permit public entities which supply water at retail
to adopt and enforce a water conservation program to reduce the quantity of water used by the
people therein for the purpose of conserving water supplies of such public entity. The Otay
Water District Board of Directors established a comprehensive water conservation program
pursuant to California Water Code Sections 375 et seq., based upon the need to conserve
water supplies and to avoid or minimize the effects of any future shortage. A water shortage
could exist based upon the occurrence of one or more of the following conditions:
1. A general water supply shortage due to increased demand or limited supplies.
2. Distribution or storage facilities of the Water Authority or other agencies become
inadequate.
3. A major failure of the supply, storage, and distribution facilities of MWD, Water
Authority, and/or OWD.
The OWD water conservation ordinance finds and determines that the conditions prevailing in
the San Diego County area require that the available water resources be put to maximum
beneficial use to the extent to which they are capable, and that the waste or unreasonable use,
or unreasonable method of use, of water be prevented and that the conservation of such water
be encouraged with a view to the maximum reasonable and beneficial use thereof in the
interests of the people of the OWD and for the public welfare.
OWD continues to promote water conservation at a variety of events, including those
involving developers in its service area. In addition, OWD developed and manages a number
of its own programs such as the Cash for WaterSmart Plants retrofit program, the Water
Smart Irrigation Upgrade Program, and the Commercial Process Improvement Program.
OWD is currently engaged in a number of conservation and water use efficiency activities.
Listed below are the current programs that are either on-going or were recently concluded:
• Residential Water Surveys: 1,349 completed since 1994
• Large Landscape Surveys: 194 completed since 1990
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• Cash for Water Smart Plants Landscape Retrofit Program: over 217,600 square feet of
turf grass replaced with water wise plants since 2003
• Rotating Nozzles Rebated: 3,170
• Residential Weather-Based Irrigation Controller (WBIC) Incentive Program: 231
distributed or rebated since 2004
• Residential High Efficiency Clothes Washers: 7,187 rebates since 1994
• Residential ULFT/HET Rebate Program: 22,376 rebates provided between 1991-2010
• Outreach Efforts to OWD Customers - the OWD promotes its conservation programs
through staffing outreach events, bill inserts, articles in the OWD’s quarterly customer
Pipeline newsletter, direct mailings to OWD customers, the OWD’s webpage and
through the Water Authority’s marketing efforts.
• School Education Programs- the OWD funds school tours of the Water Conservation
Garden, co-funds Splash Labs, provides classroom water themed kits, maintains a
library of school age appropriate water themed books, DVDs, and videos, and runs
both a school poster contest and a water themed photo contest.
• Water efficiency in new construction through Cal Green and the Model Water
Efficient Landscape Ordinance
• Focus on Commercial/Institutional/Industrial through Promoting MWD’s Save a Buck
(Commercial) Program in conjunction with the OWD’s own Commercial Process
Improvement Program
As a signatory to the MOU Regarding Urban Water Conservation in California, the OWD is
required to submit biannual reports that detail the implementation of current water
conservation practices. The OWD voluntarily agreed to implement the fourteen water
conservation Best Management Practices beginning in 1992. The OWD submits its report to
the CUWCC every two years. The OWD BMP Reports for 2005 to 2010, as well as the BMP
Coverage Report for 1999-2010, are included in the Otay Water District 2010 UWMP.
Section 6 - Existing and Projected Supplies
The OWD currently does not have an independent raw or potable water supply source. The
OWD is a member public agency of the Water Authority. The Water Authority is a member
public agency of MWD. The statutory relationships between the Water Authority and its
member agencies, and MWD and its member agencies, respectively, establish the scope of the
OWD entitlement to water from these two agencies.
The Water Authority through two delivery pipelines, referred to as Pipeline No. 4 and the
Helix Flume Pipeline, currently supply the OWD with 100 percent of its potable water. The
Water Authority in turn, currently purchases the majority of its water from MWD. Due to the
OWD reliance on these two agencies, this WSA Report includes referenced documents that
contain information on the existing and projected supplies, supply programs, and related
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projects of the Water Authority and MWD. The OWD, Water Authority, and MWD are
actively pursuing programs and projects to further diversify their water supply resources.
The description of local recycled water supplies available to the OWD is also discussed
below.
6.1 Metropolitan Water District of Southern California 2010 Regional
Urban Water Management Plan
In November 2010, MWD adopted its 2010 Regional Urban Water Management Plan
(RUWMP). The 2010 RUWMP provides MWD’s member agencies, retail water utilities,
cities, and counties within its service area with, among other things, a detailed evaluation of
the supplies necessary to meet future demands, and an evaluation of reasonable and practical
efficient water uses, recycling, and conservation activities. During the preparation of the
2010 RUWMP, MWD also utilized the previous SANDAG regional growth forecast in
calculating regional water demands for the Water Authority service area.
6.1.1 Availability of Sufficient Supplies and Plans for Acquiring
Additional Supplies
MWD is a wholesale supplier of water to its member public agencies and obtains its supplies
from two primary sources: the Colorado River, via the Colorado River Aqueduct (CRA),
which it owns and operates, and Northern California, via the State Water Project (SWP). The
2010 RUWMP documents the availability of these existing supplies and additional supplies
necessary to meet future demands.
MWD’s Integrated Resources Plan (IRP) identifies a mix of resources (imported and local)
that, when implemented, will provide 100 percent reliability for full-service demands through
the attainment of regional targets set for conservation, local supplies, State Water Project
supplies, Colorado River supplies, groundwater banking, and water transfers. The 2010
update to the IRP (2010 IRP Update) includes a planning buffer supply intended to mitigate
against the risks associated with implementation of local and imported supply programs and
for the risk that future demands could be higher than projected. The planning buffer identifies
an additional increment of water that could potentially be developed when needed and if other
supplies are not fully implemented as planned. As part of implementation of the planning
buffer, MWD periodically evaluates supply development, supply conditions, and projected
demands to ensure that the region is not under or over developing supplies. Managed
properly, the planning buffer will help ensure that the southern California region, including
San Diego County, will have adequate water supplies to meet future demands.
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In November 2010, MWD adopted its 2010 RUWMP in accordance with state law. The
resource targets included in the preceding 2010 IRP Update serve as the foundation for the
planning assumptions used in the 2010 RUWMP. MWD’s 2010 RUWMP contains a water
supply reliability assessment that includes a detailed evaluation of the supplies necessary to
meet demands over a 25-year period in average, single dry year, and multiple dry year
periods. As part of this process, MWD also uses the current SANDAG regional growth
forecast in calculating regional water demands for the Water Authority’s service area.
As stated in MWD’s 2010 RUWMP, the plan may be used as a source document for meeting
the requirements of SB 610 and SB 221 until the next scheduled update is completed in 2015.
The 2010 RUWMP includes a “Justifications for Supply Projections” in Appendix A.3, that
provides detailed documentation of the planning, legal, financial, and regulatory basis for
including each source of supply in the plan. A copy of MWD’s 2010 RUWMP can be found
on the internet at the following site address:
http://www.mwdh2o.com/mwdh2o/pages/yourwater/RUWMP/RUWMP_2010.pdf
The UWMPs for both MWD and the Water Authority will include the increase in demand
projections included in SANDAG’s Series 12 Update and from the projections from Otay
Water District WRMP Update.
Water supply agencies throughout California continue to face climate, environmental, legal,
and other challenges that impact water source supply conditions, such as the court rulings
regarding the Sacramento-San Joaquin Delta and the current western states drought
conditions. Challenges such as these essentially always will be present. The regional water
supply agencies, the Water Authority and MWD, along with OWD nevertheless fully intend
to have sufficient, reliable supplies to serve demands.
6.1.2 MWD Capital Investment Plan
MWD prepares a Capital Investment Plan as part of its annual budget approval process. The
cost, purpose, justification, status, progress, etc. of MWD’s infrastructure projects to deliver
existing and future supplies are documented in the Capital Investment Plan. The financing of
these projects is addressed as part of the annual budget approval process.
MWD’s Capital Investment Plan includes a series of projects identified from MWD studies of
projected water needs, which, when considered along with operational demands on aging
facilities and new water quality regulations, identify the capital projects needed to maintain
infrastructure reliability and water quality standards, improve efficiency, and provide future
cost savings. All projects within the Capital Investment Plan are evaluated against an
objective set of criteria to ensure they are aligned with the MWD’s goals of supply reliability
and quality.
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6.2 San Diego County Water Authority Regional Water Supplies
The Water Authority has adopted plans and is taking specific actions to develop adequate
water supplies to help meet existing and future water demands within the San Diego region.
This section contains details on the supplies being developed by the Water Authority. A
summary of recent actions pertaining to development of these supplies includes:
• In accordance with the Urban Water Management Planning Act, the Water Authority
adopted their 2010 UWMP in June 2011. The updated Water Authority 2010 UWMP
identifies a diverse mix of local and imported water supplies to meet future demands. A
copy of the updated Water Authority 2010 UWMP can be found on the internet at
http://www.sdcwa.org/2010-urban-water-management-plan
• As part of the October 2003 Quantification Settlement Agreement (QSA), the Water
Authority was assigned MWD’s rights to 77,700 acre feet per year of conserved water
from the All-American Canal (AAC) and Coachella Canal (CC) lining projects.
Deliveries of this conserved water from the CC reached the region in 2007 and
deliveries from the AAC reached the region in 2010. Expected supplies from the canal
lining projects are considered verifiable Water Authority supplies.
• Deliveries of conserved agricultural water from the Imperial Irrigation District (IID) to
San Diego County have increased annually since 2003, with 70,000 acre feet per year t
of deliveries in Fiscal Year (FY) 2010. The quantities will increase annually to 200,000
acre feet per year by 2021, and then remain fixed for the duration of the transfer
agreement.
Through implementation of the Water Authority and member agency planned supply projects,
along with reliable imported water supplies from MWD, the region anticipates having
adequate supplies to meet existing and future water demands.
To ensure sufficient supplies to meet projected growth in the San Diego region, the Water
Authority uses the SANDAG most recent regional growth forecast in calculating regional
water demands. The SANDAG regional growth forecast is based on the plans and policies of
the land-use jurisdictions with San Diego County. The existing and future demands of the
member agencies are included in the Water Authority’s projections.
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6.2.1 Availability of Sufficient Supplies and Plans for Acquiring
Additional Supplies
The Water Authority currently obtains imported supplies from MWD, conserved water from
the AAC and CC lining projects, and an increasing amount of conserved agricultural water
from IID. Of the twenty-seven member agencies that purchase water supplies from MWD,
the Water Authority is MWD’s largest customer.
Section 135 of MWD’s Act defines the preferential right to water for each of its member
agencies. As calculated by MWD, the Water Authority’s preferential right as of December
11, 2012 is 17.22 percent of MWD’s supply, while the Water Authority accounted for
approximately 25 percent of MWD’s total revenue. Under preferential rights, MWD could
allocate water without regard to historic water purchases or dependence on MWD. The Water
Authority and its member agencies are taking measures to reduce dependence on MWD
through development of additional supplies and a water supply portfolio that would not be
jeopardized by a preferential rights allocation. MWD has stated, consistent with Section 4202
of its Administrative Code that it is prepared to provide the Water Authority’s service area
with adequate supplies of water to meet expanding and increasing needs in the years ahead.
When and as additional water resources are required to meet increasing needs, MWD stated it
will be prepared to deliver such supplies. In Section ES-5 of their 2010 RUWMP, MWD
states that MWD has supply capacities that would be sufficient to meet expected demands
from 2015 through 2035. MWD has plans for supply implementation and continued
development of a diversified resource mix including programs in the Colorado River
Aqueduct, State Water Project, Central Valley Transfers, local resource projects, and in-
region storage that enables the region to meet its water supply needs.
The Water Authority has made large investments in MWD’s facilities and will continue to
include imported supplies from MWD in the future resource mix. As discussed in the Water
Authority’s 2010 UWMP, the Water Authority and its member agencies are planning to
diversify the San Diego regions supply portfolio and reduce purchases from MWD.
As part of the Water Authority’s diversification efforts, the Water Authority is now taking
delivery of conserved agricultural water from IID and water saved from the AAC and CC
lining projects. The CC lining project is complete and the Water Authority has essentially
completed construction of the AAC lining project. Table 5 summarizes the Water Authority’s
supply sources with detailed information included in the sections to follow. Deliveries from
MWD are also included in Table 5, which is further discussed in Section 6.1 above. The
Water Authority’s member agencies provided the verifiable local supply targets for
groundwater, groundwater recovery, recycled water, and surface water, which are discussed in
more detail in Section 5 of the Water Authority’s 2010 UWMP.
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Table 5
Projected Verifiable Water Supplies – Water Authority Service Area Normal Year (acre feet)
Water Supply Sources 2015 2020 2025 2030 2035
Water Authority Supplies
MWD Supplies 358,189 230,601 259,694 293,239 323,838
Water Authority/IID Transfer 100,000 190,000 200,000 200,000 200,000
AAC and CC Lining Projects 80,200 80,200 80,200 80,200 80,200
Proposed Regional Seawater
Desalination (1) 0 56,000 56,000 56,000 56,000
Member Agency Supplies
Surface Water 48,206 47,940 47,878 47,542 47,289
Water Recycling 38,660 43,728 46,603 48,278 49,998
Groundwater 11,710 11,100 12,100 12,840 12,840
Groundwater Recovery 10,320 15,520 15,520 15,520 15,520
Total Projected Supplies 647,285 675,089 717,995 753,619 785,685
Source: Water Authority 2010 Urban Water Management Plan – Table 9-1.
Note 1: On November 29, 2012, the Water Authority approved a water purchase agreement with Poseidon for
48,000 AFY with the right to purchase up to 56,000 AFY
Section 5 of the Water Authority’s 2010 UWMP also includes a discussion on the local
supply target for seawater desalination. Seawater desalination supplies represent a significant
future local resource in the Water Authority’s service area.
The Carlsbad Desalination Project (Project) is a fully-permitted seawater desalination plant
and conveyance pipeline designed to provide a highly reliable local supply of up to 56,000
acre-feet (AF) per year for the region. In 2020, the Project would account for approximately
8% of the total projected regional supply and 30% of all locally generated water in San Diego
County. If the project becomes operational in 2016, it will more than double the amount of
local supplies developed in the region since 1991. The desalination plant itself will be fully
financed, built, and operated by Poseidon. The Water Authority will purchase water from the
plant under a water purchase agreement. The new pipeline connecting the desalination plant
with the Water Authority’s Second Aqueduct will be owned and operated by the Water
Authority, but responsibility for design and construction will reside with Poseidon through a
separate Design-Build Agreement. The Water Authority will be responsible for aqueduct
improvements, including the relining and rehabilitation of Pipeline 3 to accept desalinated
water under higher operating pressures, modifications to the San Marcos Vent that allows the
flow of water between Pipelines 3 and 4, and improvements at the Twin Oaks Valley Water
Treatment Plant necessary to integrate desalinated water into the Water Authority’s system
for optimal distribution to member agencies.
On July 22, 2010, the Board approved a Term Sheet between the Water Authority and
Poseidon Resources that outlined the key terms and conditions that would be detailed and
incorporated in a comprehensive Water Purchase Agreement (WPA). Beginning in October
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2011 and under the direction of the Board’s Carlsbad Desalination Project Advisory Group,
staff began developing and negotiating with Poseidon a WPA consistent with the July 22,
2010 Board approved Term Sheet. The July 2010 Term Sheet also identified specific
conditions precedent to Board consideration of the WPA. On November 29, 2012, the Water
Authority Board adopted a resolution approving the Water Purchase Agreement (WPA).
The Water Authority’s existing and planned supplies from the IID transfer and canal lining
projects are considered “drought-proof” supplies and should be available at the yields shown
in Table 5 in normal water year supply and demand assessment. Single dry year and multiple
dry year scenarios are discussed in more detail in Section 9 of the Water Authority’s 2010
UWMP.
As part of preparation of a written water supply assessment and/or verification report, an
agency’s shortage contingency analysis should be considered in determining sufficiency of
supply. Section 11 of the Water Authority’s 2010 UWMP contains a detailed shortage
contingency analysis that addresses a regional catastrophic shortage situation and drought
management. The analysis demonstrates that the Water Authority and its member agencies,
through the Emergency Response Plan, Emergency Storage Project, and Drought
Management Plan (DMP) are taking actions to prepare for and appropriately handle an
interruption of water supplies. The DMP, adopted in May 2006, provides the Water Authority
and its member agencies with a series of potential actions to take when faced with a shortage
of imported water supplies from MWD due to prolonged drought or other supply shortfall
conditions. The actions will help the region avoid or minimize the impacts of shortages and
ensure an equitable allocation of supplies throughout the San Diego region.
6.2.1.1 Water Authority-Imperial Irrigation District Water Conservation
and Transfer Agreement
The QSA was signed in October 2003, and resolves long-standing disputes regarding priority
and use of Colorado River water and creates a baseline for implementing water transfers. With
approval of the QSA, the Water Authority and IID were able to implement their Water
Conservation and Transfer Agreement. This agreement not only provides reliability for the San
Diego region, but also assists California in reducing its use of Colorado River water to its legal
allocation.
On April 29, 1998, the Water Authority signed a historic agreement with IID for the long-term
transfer of conserved Colorado River water to San Diego County. The Water Authority-IID
Water Conservation and Transfer Agreement (Transfer Agreement) is the largest agriculture-to-
urban water transfer in United States history. Colorado River water will be conserved by
Imperial Valley farmers who voluntarily participate in the program and then transferred to the
Water Authority for use in San Diego County.
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Implementation Status
On October 10, 2003, the Water Authority and IID executed an amendment to the original 1998
Transfer Agreement. This amendment modified certain aspects of the Transfer Agreement to be
consistent with the terms and conditions of the QSA and related agreements. It also modified
other aspects of the agreement to lessen the environmental impacts of the transfer of conserved
water. The amendment was expressly contingent on the approval and implementation of the
QSA, which was also executed on October 10, 2003. Section 6.2.1, “Colorado River,” contains
details on the QSA.
On November 5, 2003, IID filed a complaint in Imperial County Superior Court seeking
validation of 13 contracts associated with the Transfer Agreement and the QSA. Imperial
County and various private parties filed additional suits in Superior Court, alleging violations of
the California Environmental Quality Act (CEQA), the California Water Code, and other laws
related to the approval of the QSA, the water transfer, and related agreements. The lawsuits were
coordinated for trial. The IID, Coachella Valley Water District, MWD, the Water Authority, and
state are defending these suits and coordinating to seek validation of the contracts. In January
2010, a California Superior Court judge ruled that the QSA and 11 related agreements were
invalid, because one of the agreements created an open-ended financial obligation for the state,
in violation of California’s constitution. The QSA parties appealed this decision and are
continuing to seek validation of the contracts. The appeal is currently pending in the Third
District Court of Appeal. A stay of the trial court judgment has been issued during the appeal.
Implementation of the transfer provisions is proceeding during litigation.
Expected Supply
Deliveries into San Diego County from the transfer began in 2003 with an initial transfer of
10,000 acre feet per year. The Water Authority received increasing amounts of transfer water
each year, according to a water delivery schedule contained in the transfer agreement. In 2012,
the Water Authority will receive 90,000 acre feet per year. The quantities will increase annually
to 200,000 acre feet per year by 2021 then remain fixed for the duration of the transfer
agreement. The initial term of the Transfer Agreement is 45 years, with a provision that either
agency may extend the agreement for an additional 30-year term.
During dry years, when water availability is low, the conserved water will be transferred
under IID’s Colorado River rights, which are among the most senior in the Lower Colorado
River Basin. Without the protection of these rights, the Water Authority could suffer delivery
cutbacks. In recognition for the value of such reliability, the 1998 contract required the Water
Authority to pay a premium on transfer water under defined regional shortage circumstances.
The shortage premium period duration is the period of consecutive days during which any of the
following exist: 1) a Water Authority shortage; 2) a shortage condition for the Lower Colorado
River as declared by the Secretary; and 3) a Critical Year. Under terms of the October 2003
amendment, the shortage premium will not be included in the cost formula until Agreement Year
16.
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Transportation
The Water Authority entered into a water exchange agreement with MWD on October 10, 2003,
to transport the Water Authority–IID transfer water from the Colorado River to San Diego
County. Under the exchange agreement, MWD takes delivery of the transfer water through its
Colorado River Aqueduct. In exchange, MWD delivers to the Water Authority a like quantity
and quality of water. The Water Authority pays MWD’s applicable wheeling rate for each acre-
feet of exchange water delivered. Under the terms of the water exchange agreement, MWD will
make delivery of the transfer water for 35 years, unless the Water Authority and MWD elect to
extend the agreement another 10 years for a total of 45 years.
Cost/Financing
The costs associated with the transfer are financed through the Water Authority’s rates and
charges. In the agreement between the Water Authority and IID, the price for the transfer water
started at $258 per acre-feet and increased by a set amount for the first seven years. In December
2009, the Water Authority and IID executed a fifth amendment to the water transfer agreement
that sets the price per acre-feet for transfer water for calendar years 2010 through 2015,
beginning at $405 per acre-feet in 2010 and increasing to $624 per acre-feet in 2015. For
calendar years 2016 through 2034, the unit price will be adjusted using an agreed-upon index.
The amendment also required the Water Authority to pay IID $6 million at the end of calendar
year 2009 and another $50 million on or before October 1, 2010, provided that a transfer
stoppage is not in effect as a result of a court order in the QSA coordinated cases. Beginning in
2035, either the Water Authority or IID can, if certain criteria are met, elect a market rate price
through a formula described in the water transfer agreement.
The October 2003 exchange agreement between MWD and the Water Authority set the initial
cost to transport the conserved water at $253 per acre-feet. Thereafter, the price is set to be equal
to the charge or charges set by MWD’s Board of Directors pursuant to applicable laws and
regulation, and generally applicable to the conveyance of water by MWD on behalf of its
member agencies. The transportation charge in 2010 was $314 per acre-feet.
The Water Authority is providing $10 million to help offset potential socioeconomic impacts
associated with temporary land fallowing. IID will credit the Water Authority for these funds
during years 16 through 45. In 2007, the Water Authority prepaid IID an additional $10 million
for future deliveries of water. IID will credit the Water Authority for this up-front payment
during years 16 through 30.
As part of implementation of the QSA and water transfer, the Water Authority also entered into
an environmental cost sharing agreement. Under this agreement the Water Authority is
contributing a total of $64 million to fund environmental mitigation projects and the Salton Sea
Restoration Fund.
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Written Contracts or Other Proof
The supply and costs associated with the transfer are based primarily on the following
documents:
Agreement for Transfer of Conserved Water by and between IID and the Water Authority (April
29, 1998). This Agreement provides for a market-based transaction in which the Water
Authority would pay IID a unit price for agricultural water conserved by IID and transferred to
the Water Authority.
Revised Fourth Amendment to Agreement between IID and the Water Authority for Transfer of
Conserved Water (October 10, 2003). Consistent with the executed Quantification Settlement
Agreement (QSA) and related agreements, the amendments restructure the agreement and
modify it to minimize the environmental impacts of the transfer of conserved water to the Water
Authority.
Amended and Restated Agreement between MWD and Water Authority for the Exchange of
Water (October 10, 2003). This agreement was executed pursuant to the QSA and provides for
delivery of the transfer water to the Water Authority.
Environmental Cost Sharing, Funding, and Habitat Conservation Plan Development Agreement
among IID, Coachella Valley Water District (CVWD), and Water Authority (October 10, 2003).
This Agreement provides for the specified allocation of QSA-related environmental review,
mitigation, and litigation costs for the term of the QSA, and for development of a Habitat
Conservation Plan.
Quantification Settlement Agreement Joint Powers Authority Creation and Funding Agreement
(October 10, 2003). The purpose of this agreement is to create and fund the QSA Joint Powers
Authority and to establish the limits of the funding obligation of CVWD, IID, and Water
Authority for environmental mitigation and Salton Sea restoration pursuant to SB 654
(Machado).
Fifth Amendment to Agreement Between Imperial Irrigation District and San Diego County
Water Authority for Transfer of Conserved Water (December 21, 2009). This agreement
implements a settlement between the Water Authority and IID regarding the base contract price
of transferred water.
Federal, State, and Local Permits/Approvals
Federal Endangered Species Act Permit. The U.S. Fish and Wildlife Service (USFWS) issued a
Biological Opinion on January 12, 2001, that provides incidental take authorization and certain
measures required to offset species impacts on the Colorado River regarding such actions.
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State Water Resources Control Board (SWRCB) Petition. SWRCB adopted Water Rights Order
2002-0016 concerning IID and Water Authority’s amended joint petition for approval of a long-
term transfer of conserved water from IID to the Water Authority and to change the point of
diversion, place of use, and purpose of use under Permit 7643.
Environmental Impact Report (EIR) for Conservation and Transfer Agreement. As lead agency,
IID certified the Final EIR for the Conservation and Transfer Agreement on June 28, 2002.
U. S. Fish and Wildlife Service Draft Biological Opinion and Incidental Take Statement on the
Bureau of Reclamation's Voluntary Fish and Wildlife Conservation Measures and Associated
Conservation Agreements with the California Water Agencies (12/18/02). The U. S. Fish and
Wildlife Service issued the biological opinion/incidental take statement for water transfer
activities involving the Bureau of Reclamation and associated with IID/other California water
agencies' actions on listed species in the Imperial Valley and Salton Sea (per the June 28, 2002
EIR).
Addendum to EIR for Conservation and Transfer Agreement. IID as lead agency and Water
Authority as responsible agency approved addendum to EIR in October 2003.
Environmental Impact Statement (EIS) for Conservation and Transfer Agreement. Bureau of
Reclamation issued a Record of Decision on the EIS in October 2003.
CA Department of Fish and Game California Endangered Species Act Incidental Take Permit
#2081-2003-024-006). The California Department of Fish and Game issued this permit
(10/22/04) for potential take effects on state-listed/fully protected species associated with
IID/other California water agencies' actions on listed species in the Imperial Valley and Salton
Sea (per the June 28, 2002 EIR).
California Endangered Species Act (CESA) Permit. A CESA permit was issued by California
Department of Fish and Game (CDFG) on April 4, 2005, providing incidental take authorization
for potential species impacts on the Colorado River.
6.2.1.2 All-American Canal and Coachella Canal Lining Projects
As part of the QSA and related contracts, the Water Authority was assigned MWD’s rights to
77,700 acre-feet per year of conserved water from projects that will line the All-American
Canal (AAC) and Coachella Canal (CC). The projects will reduce the loss of water that
currently occurs through seepage, and the conserved water will be delivered to the Water
Authority. This conserved water will provide the San Diego region with an additional 8.5
million acre-feet over the 110-year life of the agreement.
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Implementation Status
The CC lining project began in November 2004 and was completed in 2006. Deliveries of
conserved water to the Water Authority began in 2007. The project constructed a 37-mile
parallel canal adjacent to the CC. The AAC lining project was begun in 2005 and was
completed in 2010. The lining project constructed a concrete-lined canal parallel to 24 miles
of the existing AAC from Pilot Knob to Drop 3.
In July 2005, a lawsuit (CDEM v United States, Case No. CV-S-05-0870-KJD-PAL) was filed
in the U. S. District Court for the District of Nevada on behalf of U.S. and Mexican groups
challenging the lining of the AAC. The lawsuit, which names the Secretary of the Interior as
a defendant, claims that seepage water from the canal belongs to water users in Mexico.
California water agencies note that the seepage water is actually part of California's Colorado
River allocation and not part of Mexico's allocation. The plaintiffs also allege a failure by the
United States to comply with environmental laws. Federal officials have stated that they
intend to vigorously defend the case.
Expected Supply
The AAC lining project makes 67,700 acre-feet of Colorado River water per year available
for allocation to the Water Authority and San Luis Rey Indian water rights settlement parties.
The CC lining project makes 26,000 acre-feet of Colorado River water each year available for
allocation. The 2003 Allocation Agreement provides for 16,000 acre-feet per year of
conserved canal lining water to be allocated to the San Luis Rey Indian Water Rights
Settlement Parties. The remaining amount, 77,700 acre-feet per year, is to be available to the
Water Authority, with up to an additional 4,850 acre-feet per year available to the Water
Authority depending on environmental requirements from the CC lining project. For planning
purposes, the Water Authority assumes that 2,500 acre-feet of the 4,850 acre-feet will be
available each year for delivery, for a total of 80,200 acre-feet per year of that supply.
According to the Allocation Agreement, IID has call rights to a portion (5,000 acre-feet per
year) of the conserved water upon termination of the QSA for the remainder of the 110 years
of the Allocation Agreement and upon satisfying certain conditions. The term of the QSA is
for up to 75 years.
Transportation
The October 2003 Exchange Agreement between the Water Authority and MWD provides for
the delivery of the conserved water from the canal lining projects. The Water Authority pays
MWD’s applicable wheeling rate for each acre-foot of exchange water delivered. In the
Agreement, MWD will deliver the canal lining water for the term of the Allocation
Agreement (110 years).
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Cost/Financing
Under California Water Code Section 12560 et seq., the Water Authority received $200
million in state funds for construction of the canal lining projects. In addition, $20 million
was made available from Proposition 50 and $36 million from Proposition 84. The Water
Authority was responsible for additional expenses above the funds provided by the state.
The rate to be paid to transport the canal lining water will be equal to the charge or charges set
by MWD’s Board of Directors pursuant to applicable law and regulation and generally
applicable to the conveyance of water by MWD on behalf of its member agencies.
In accordance with the Allocation Agreement, the Water Authority is responsible for a portion
of the net additional Operation, Maintenance, and Repair (OM&R) costs for the lined canals.
Any costs associated with the lining projects as proposed are to be financed through the Water
Authority’s rates and charges.
Written Contracts or Other Proof
The expected supply and costs associated with the lining projects are based primarily on the
following documents:
U.S. Public Law 100-675 (1988). Authorized the Department of the Interior to reduce seepage
from the existing earthen AAC and CC. The law provides that conserved water will be made
available to specified California contracting water agencies according to established priorities.
California Department of Water Resources - MWD Funding Agreement (2001). Reimburse
MWD for project work necessary to construct the lining of the CC in an amount not to exceed
$74 million. Modified by First Amendment (2004) to replace MWD with the Authority.
Modified by Second Amendment (2004) to increase funding amount to $83.65 million, with
addition of funds from Proposition 50.
California Department of Water Resources - IID Funding Agreement (2001). Reimburse IID for
project work necessary to construct a lined AAC in an amount not to exceed $126 million.
MWD - CVWD Assignment and Delegation of Design Obligations Agreement (2002). Assigns
design of the CC lining project to CVWD.
MWD - CVWD Financial Arrangements Agreement for Design Obligations (2002). Obligates
MWD to advance funds to CVWD to cover costs for CC lining project design and CVWD to
invoice MWD to permit the Department of Water Resources to be billed for work completed.
Allocation Agreement among the United States of America, The MWD Water District of
Southern California, Coachella Valley Water District, Imperial Irrigation District, San Diego
County Water Authority, the La Jolla, Pala, Pauma, Rincon, and San Pasqual Bands of Mission
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Indians, the San Luis Rey River Indian Water Authority, the City of Escondido, and Vista
Irrigation District (October 10, 2003). This agreement includes assignment of MWD’s rights
and interest in delivery of 77,700 acre-feet of Colorado River water previously intended to be
delivered to MWD to the Water Authority. Allocates water from the AAC and CC lining
projects for at least 110 years to the Water Authority, the San Luis Rey Indian Water Rights
Settlement Parties, and IID, if it exercises its call rights.
Amended and Restated Agreement between MWD and Water Authority for the Exchange of
Water (October 10, 2003). This agreement was executed pursuant to the QSA and provides for
delivery of the conserved canal lining water to the Water Authority.
Agreement between MWD and Water Authority regarding Assignment of Agreements related to
the AAC and CC Lining Projects. This agreement was executed in April 2004 and assigns
MWD's rights to the Water Authority for agreements that had been executed to facilitate funding
and construction of the AAC and CC lining projects:
Assignment and Delegation of Construction Obligations for the Coachella Canal Lining Project
under the Department of Water Resources Funding Agreement No. 4600001474 from the San
Diego County Water Authority to the Coachella Valley Water District, dated September 8, 2004.
Agreement Regarding the Financial Arrangements between the San Diego County Water
Authority and Coachella Valley Water District for the Construction Obligations for the
Coachella Canal Lining Project, dated September 8, 2004.
Agreement No. 04-XX-30-W0429 Among the United States Bureau of Reclamation, the
Coachella Valley Water District, and the San Diego County Water Authority for the
Construction of the Coachella Canal Lining Project Pursuant to Title II of Public Law 100-675,
dated October 19, 2004.
California Water Code Section 12560 et seq. This Water Code Section provides for $200
million to be appropriated to the Department of Water Resources to help fund the canal lining
projects in furtherance of implementing California’s Colorado River Water Use Plan.
California Water Code Section 79567. This Water Code Section identifies $20 million as
available for appropriation by the California Legislature from the Water Security, Clean
Drinking Water, Coastal, and Beach Protection Fund of 2002 (Proposition 50) to DWR for
grants for canal lining and related projects necessary to reduce Colorado River water use.
According to the Allocation Agreement, it is the intention of the agencies that those funds will be
available for use by the Water Authority, IID, or CVWD for the AAC and CC lining projects.
California Public Resources Code Section 75050(b) (1). This section identifies up to $36 million
as available for water conservation projects that implement the Allocation Agreement as defined
in the Quantification Settlement Agreement.
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Federal, State, and Local Permits/Approvals
AAC Lining Project Final EIS/EIR (March 1994). A final EIR/EIS analyzing the potential
impacts of lining the AAC was completed by the Bureau of Reclamation (Reclamation) in March
1994. A Record of Decision was signed by Reclamation in July 1994, implementing the
preferred alternative for lining the AAC. A re-examination and analysis of these environmental
compliance documents by Reclamation in November 1999 determined that these documents
continued to meet the requirements of the NEPA and the CEQA and would be valid in the future.
CC Lining Project Final EIS/EIR (April 2001). The final EIR/EIS for the CC lining project was
completed in 2001. Reclamation signed the Record of Decision in April 2002. An amended
Record of Decision has also been signed to take into account revisions to the project description.
Mitigation, Monitoring, and Reporting Program for Coachella Canal Lining Project, SCH
#1990020408; prepared by Coachella Valley Water District, May 16, 2001.
Environmental Commitment Plan for the Coachella Canal Lining Project, approved by the US
Bureau of Reclamation (Boulder City, NV) on March 4, 2003.
Environmental Commitment Plan and Addendum to the All-American Canal Lining Project
EIS/EIR California State Clearinghouse Number SCH 90010472 (June 2004, prepared by
IID).
Addendum to Final EIS/EIR and Amendment to Environmental Commitment Plan for the
All-American Canal Lining Project (approved June 27, 2006, by IID Board of Directors).
6.2.1.3 Carlsbad Seawater Desalination Project
Development of seawater desalination in San Diego County will assist the region in
diversifying its water resources, reduce dependence on imported supplies, and provide a new
drought-proof, locally treated water supply. The Carlsbad Desalination Project is a fully-
permitted seawater desalination plant and conveyance pipeline currently being developed by
Poseidon, a private investor–owned company that develops water and wastewater
infrastructure. The project, located at the Encina Power Station in Carlsbad, has been in
development since 1998 and was incorporated into the Water Authority’s 2003 Water
Facilities Master Plan and the 2010 UWMP. The Carlsbad Desalination Project has obtained
all required permits and environmental clearances and, when completed, will provide a highly
reliable local supply of 48,000 to 56,000 acre-feet per year for the region.
Implementation Status
The Project has obtained all required permits and environmental clearances, including the
following:
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• National Pollutant Discharge Elimination System (NPDES) Discharge Permit
(Regional Water Quality Control Board)
• Conditional Drinking Water Permit (California Department of Health Services)
• State Lands Commission Lease (State Lands Commission)
• Coastal Development Permit (California Coastal Commission)
IDE Technologies, a worldwide leader in the design, construction, and operation of
desalination plants, was selected by Poseidon to be the desalination process contractor for the
Project.
On July 22, 2010, the Board approved a Term Sheet between the Water Authority and
Poseidon Resources that outlined the key terms and conditions that would be detailed and
incorporated in a comprehensive Water Purchase Agreement (WPA). Beginning in October
2011 and under the direction of the Board’s Carlsbad Desalination Project Advisory Group,
staff began developing and negotiating with Poseidon a WPA consistent with the July 22,
2010 Board approved Term Sheet. The July 2010 Term Sheet also identified specific
conditions precedent to Board consideration of the WPA.
On November 29, 2012, the Water Authority Board adopted a resolution approving the
Design-Build Agreement between the Water Authority and Poseidon. The Design-Build
Agreement establishes the commercial and technical terms for implementation of the
desalination product pipeline improvements. These improvements consist of an approximate
10-mile long, 54-inch diameter conveyance pipeline connecting the Desalination Plant to the
Water Authority’s Second Aqueduct. The pipeline will generally be constructed within
improved streets in commercial and industrial areas in the cities of Carlsbad, Vista, and San
Marcos. The Water Authority will own the Project Water Pipeline Improvements upon
execution of the Design-Build Agreement, and upon completion and acceptance of
construction, the Water Authority will assume operational control of all pipeline
improvements.
Expected Supply
When completed, the Project will provide a highly reliable local supply of 48,000 to 56,000
acre-feet per year of supply for the region, available in both normal and dry hydrologic
conditions. In 2020, the Project would account for approximately 8% of the total projected
regional supply and 30% of all locally generated water in San Diego County. When the
project becomes operational in 2016, it will more than double the amount of local supplies
developed in the region since 1991.
Transportation
On November 29, 2012, the Water Authority Board adopted a resolution approving the
Design-Build Agreement between the Water Authority and Poseidon. The Design-Build
Agreement establishes the commercial and technical terms for implementation of the
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desalination product pipeline improvements. These improvements consist of an approximate
10-mile long, 54-inch diameter conveyance pipeline connecting the Desalination Plant to the
Water Authority’s Second Aqueduct. The pipeline will generally be constructed within
improved streets in commercial and industrial areas in the cities of Carlsbad, Vista, and San
Marcos. The Water Authority will own the Project Water Pipeline Improvements upon
execution of the Design-Build Agreement, and upon completion and acceptance of
construction, the Water Authority will assume operational control of all pipeline
improvements.
The Water Authority will be responsible for aqueduct improvements, including the relining
and rehabilitation of Pipeline 3 to accept desalinated water under higher operating pressures,
modifications to the San Marcos Vent that allows the flow of water between Pipelines 3 and
4, and improvements at the Twin Oaks Valley Water Treatment Plant necessary to integrate
desalinated water into the Water Authority’s system for optimal distribution to member
agencies.
Cost/Financing
The plant and the offsite pipeline will be financed through tax exempt government bonds
issued for the Water Authority by the California Pollution Control Financing Authority
(CPCFA). On November 29, 2012, the Water Authority Board adopted a resolution
approving agreements to accomplish tax exempt project financing through the CPCFA.
A preliminary September 2012 unit cost estimate was $2,300/AF. The Water Authority’s
water purchase costs would be financed through Water Authority rates and charges. Poseidon
is financing the capital cost of the Project with a combination of private equity and tax-
exempt Private Activity Bonds.
Written Contracts or Other Proof
The expected supply and costs associated with the Carlsbad Desalination Project are based
primarily on the following documents:
Development Agreement between City of Carlsbad and Poseidon (October 2009). A
Development Agreement between Carlsbad and Poseidon was executed on October 5, 2009
Agreement of Term Sheet between the Water Authority and Poseidon Resources (July 2010).
The Water Authority approved the Term Sheet at its July 2010 Board Meeting. The Term
Sheet outlines the terms and conditions of a future Water Purchase Agreement with Poseidon
and allocates the resources to prepare the draft Water Purchase Agreement.
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Federal, State, and Local Permits/Approvals
Carlsbad Desalination Project Final EIR
The City of Carlsbad, acting as lead agency for Carlsbad Seawater Desalination Plant and
appurtenant facilities proposed by Poseidon (the “Project”) prepared an Environmental Impact
Report for the Project in compliance with the California Environmental Quality Act
(“CEQA”), which the City of Carlsbad certified on June 13, 2006.
http://www.sdcwa.org/rwfmp-peir
The City of Carlsbad prepared an Addendum to the Carlsbad EIR (“Addendum”) which was
adopted on September 15, 2009, and reflects minor and immaterial design modifications to
the Project site plan, appurtenant facilities, and water delivery pipeline network.
The environmental documents and permits are found at the following links:
http://www.carlsbad-desal.com/EIR.asp
The Water Authority, as a Responsible Agency under CEQA, adopted a resolution on
November 29, 2012 approving a Second Addendum to the Carlsbad Precise Development
Plan and Desalination Plant Final EIR and First Addendum that evaluates the environmental
impacts of several proposed facility modifications that are necessary to allow for operational
flexibility and efficiency in receiving and delivering desalination product water. These
modifications include: a realignment of a portion of the approved desalination pipeline, the
addition of chemical injection at the approved San Marcos Aqueduct Connection site, the
relining of a portion of Pipeline 3, the addition of a pipeline and expanded flow control
facility at Twin Oaks Valley Water Treatment Plant and a replacement of the San Marcos
Vent on Pipeline 4. Impacts associated with the proposed modifications would not result in a
new significant impact or substantial increase in the severity of impacts previously evaluated
in the Carlsbad FEIR or the First Addendum. There are no substantial changes to the
circumstances under which the project will be undertaken, and no new information of
substantial importance that was not known and could not have been known when the FEIR
was certified and the First Addendum was approved, and that have since been identified.
Therefore, the Second Addendum satisfies the CEQA requirements for the proposed project
modifications.
Regional Water Facilities Master Plan EIR
On November 20, 2003, the Water Authority Board of Directors adopted Resolution No.
2003-34 certifying the Final Program Environmental Impact Report (State Clearinghouse No.
2003021052) for the Water Authority’s Regional Water Facilities Master Plan Project (the
“Master Plan EIR”), which evaluated, among other things, potential growth inducing impacts
associated with new water supplies to the region including, but not limited to, up to 150
million gallons per day (“MGD”) of new supplies from seawater desalination. This
certification included a 50 MGD plant located in the City of Carlsbad.
The environmental documents and permits are found at the following links:
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http://www.sdcwa.org/rwfmp-peir
Sub regional Natural Community Conservation Plan/Habitat Conservation Plan (NCCP/HCP)
On December 8, 2010, the Board adopted Resolution No. 2010-18 certifying a Final
environmental Impact Report/Environmental Impact Statement for the San Diego County
Water Authority Subregional Natural Community Conservation Plan/Habitat Conservation
Plan (State Clearinghouse No. 2003121012) (the “Habitat Conservation Plan EIR/EIS”),
which Plan was implemented on December 28, 201.
The environmental documents and permits are found at the following links:
http://www.sdcwa.org/nccp-hcp
Twin Oaks Valley Water Treatment Plant EIR
On September 8, 2005, the Board adopted Resolution No. 2005-31 certifying a Final
Environmental Impact Report for the Twin Oaks Valley Water Treatment Plant Project (State
Clearinghouse No. 20040071034) (the “Twin Oaks EIR”), which project was constructed as a
100 MGD submerged membrane water treatment facility, including treated water holding
tanks and distribution pipelines and other facilities, consistent with the conditions and
mitigation measures included in the Twin Oaks EIR.
http://www.sdcwa.org/twin-oaks-valley-treatment-plant-final-eir
2010 Urban Water Management Plan
http://www.sdcwa.org/2010-urban-water-management-plan
Drinking Water Permit (October 2006). The California Department of Health Services
approved the Conditional Drinking Water Permit on October 19, 2006.
Coastal Development Permit
The Project is fully permitted, with the California Coastal Commission issuing the following
permits: Coastal Development Permit No. E-06-013, Energy Minimization and Greenhouse
Gas Reduction Plan (December 2008), Marine Life Mitigation Plan (December 2008),
Erosion Control Plan (November 2009), Landscaping Plan (September 2009), Lighting Plan
(August 2009), Construction Plan (September 2009), and Water Pollution Control Plan
(September 2009); the California Department of Public Health issuing Conceptual Approval
Letter dated October 19, 2006; the California Regional Water Quality Control Board issuing
NPDES Permit No. CA0109223 and Notice of Intent to Discharge for Storm Water
Associated with Construction Activities (WDID #9 37C361181); the City of Carlsbad issuing
Redevelopment Permit RP 05-12(A), Specific Plan 144 with Amendment 144(J) SP 144(J),
Habitat Management Plan Permit Amendment HMP 05-08(A), Precise Development Plan
PDP 00-02(B), Mitigation Monitoring and Reporting Program for EIR 03-05(A),
Development Agreement DA 05-01(A), Standard Urban Storm Water Mitigation Program
(September 2009), and Coastal Development Permit 04-41; the State of California State
Lands Commission issuing an Amendment of Lease PRC 8727.1 (August 2008).
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The environmental documents and permits are found at the following links:
http://www.sdcwa.org/carlsbad-desalination-project-approved-permits-and-plans
State Lands Commission Lease Application (Amendment of Lease PRC 8727.1 August
2008). Amends lease of land by Cabrillo Power I LLC (Cabrillo) from the State Lands
Commission for the lands where the project will be constructed. Cabrillo and Poseidon
entered into agreement on July 1, 2003, authorizing Poseidon to use those lands to construct
the project.
6.2.2 Water Authority Capital Improvement Program and Financial
Information
The Water Authority’s Capital Improvement Program (CIP) can trace its beginnings to a
report approved by the Board in 1989 entitled, The Water Distribution Plan, and a Capital
Improvement Program through the Year 2010. The Water Distribution Plan included ten
projects designed to increase the capacity of the aqueduct system, increase the yield from
existing water treatment plants, obtain additional supplies from MWD, and increase the
reliability and flexibility of the aqueduct system. Since that time the Water Authority has
made numerous additions to the list of projects included in its CIP as the region’s
infrastructure needs and water supply outlook have changed.
The current list of projects included in the CIP is based on the results of planning studies,
including the 2005 UWMP and the 2002 Regional Water Facilities Master Plan. These CIP
projects, which are most recently described in the Water Authority’s Adopted Multi-Year
Budget, include projects valued at $3.50 billion. These CIP projects are designed to meet
projected water supply and delivery needs of the member agencies through 2035. The
projects include a mix of new facilities that will add capacity to existing conveyance, storage,
and treatment facilities, as well as repair and replace aging infrastructure:
• Asset Management – The primary components of the asset management projects
include relining and replacing existing pipelines and updating and replacing metering
facilities.
• New Facilities – These projects will expand the capacity of the aqueduct system,
complete the projects required under the Quantification Settlement Agreement (QSA),
and evaluate new supply opportunities.
• Emergency Storage Project – Projects remaining to be completed under the ongoing
ESP include the San Vicente Dam Raise, the Lake Hodges projects, and a new pump
station to extend ESP supplies to the northern reaches of the Water Authority service
area.
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• Other Projects – This category includes out-of-region groundwater storage, increased
local water treatment plant capacity, and projects that mitigate environmental impacts
of the CIP.
The Water Authority Board of Directors is provided a semi-annual and annual report on the
status of development of the CIP projects. As described in the Water Authority’s biennial
budget, a combination of long and short term debt and cash (pay-as-you-go) will provide
funding for capital improvements. Additional information is included in the Water
Authority’s biennial budget, which also contains selected financial information and
summarizes the Water Authority’s investment policy.
6.3 Otay Water District
The Otay Water District WRMP Update and the 2010 UWMP contain comparisons of
projected supply and demands through the year 2035. Projected potable water resources to
meet planned demands as documented were planned to be supplied entirely with imported
water received from the Water Authority. Recycled water resources to meet projected
demands are planned to be supplied from local wastewater treatment plants. The OWD
currently has no local supply of raw water, potable water, or groundwater resources.
The development and/or acquisition of potential groundwater, recycled water market
expansion, and seawater desalination supplies by the OWD have evolved and are planned to
occur in response to the regional water supply issues. These water supply projects are in
addition to those identified as sustainable supplies in the current Water Authority and MWD
UWMP, IRP, Master Plans, and other planning documents. These new additional water
supply projects are not currently developed and are in various stages of the planning process.
These local and regional water supply projects will allow for less reliance upon imported
water and are considered a new water supply resource for the OWD.
The OWD expansion of the market areas for the use of recycled water within the watersheds
upstream of the Sweetwater Reservoir and the Lower Otay Reservoir, and Otay Mesa will
increase recycled water use and thus require less dependence on imported water for irrigation
purposes.
The supply forecasts contained within this WSA Report do consider development and/or
acquisition of potential groundwater, recycled water market expansion, and seawater
desalination supplies by the OWD.
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6.3.1 Availability of Sufficient Supplies and Plans for Acquiring
Additional Supplies
The availability of sufficient potable water supplies and plans for acquiring additional potable
water supplies to serve existing and future demands of the OWD is founded upon the
preceding discussions regarding MWD’s and the Water Authority’s water supply resources
and water supplies to be acquired by the OWD. Historic imported water deliveries from the
Water Authority to OWD and recycled water deliveries from the OWD Ralph W. Chapman
Water Reclamation Facility (RWCWRF) are shown in Table 6. Since the year 2000 through
mid May 2007, recycled water demand has exceeded the recycled water supply capability
typically in the summer months. The RWCWRF is limited to a maximum production of
about 1,300 acre-feet per year. The recycled water supply shortfall had been met by
supplementing with potable water into the recycled water storage system as needed by adding
potable water supplied by the Water Authority. On May 18, 2007 an additional source of
recycled water supply from the City of San Diego’s South Bay Water Reclamation Plant
(SBWRP) became available. The supply of recycled water from the SBWRP is a result of
essentially completing construction and commencement of operations of the transmission,
storage, and pump station systems necessary to link the SBWRP recycled water supply source
to the existing OWD recycled water system.
Table 6
Otay Water District
Historic Imported and Local Water Supplies
Calendar
Year
Imported Water
(acre-feet)
Recycled Water
(acre-feet)
Total
(acre-feet)
1980 12,558 0 12,558
1985 14,529 0 14,529
1990 23,200 0 23,200
1995 20,922 614 21,536
2000 29,901 948 30,849
2005 37,678 1,227 38,905
2010 29,270 4,090 33,270
2011 30,777 3,776 34,553
Source: Otay Water District operational records.
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6.3.1.1 Imported and Regional Supplies
The availability of sufficient imported and regional potable water supplies to serve existing
and planned uses within OWD is demonstrated in the above discussion on MWD and the
Water Authority’s water supply reliability. The County Water Authority Act, Section 5
subdivision 11, states that the Water Authority “as far as practicable, shall provide each of its
member agencies with adequate supplies of water to meet their expanding and increasing
needs.” The Water Authority provides between 75 to 95 percent of the total supplies used by
its 24 member agencies, depending on local weather and supply conditions. In calendar year
2010 the supply to OWD was 29,270 acre-feet of supply from the Water Authority. An
additional 4,090 ac-ft of recycled water was provided from the City of San Diego and from
OWD’s Ralph W. Chapman Water Reclamation Facility. The total baseline demand for
potable water within the OWD is expected to increase to about 77,171 acre-feet by 2035 as
per the Otay Water District 2010 UWMP.
Potable Water System Facilities
The OWD continues to pursue diversification of its water supply resources to increase
reliability and flexibility. The OWD also continues to plan, design, and construct potable
water system facilities to obtain these supplies and to distribute potable water to meet
customer demands. The OWD has successfully negotiated two water supply diversification
agreements that enhance reliability and flexibility, which are briefly described as follows.
• The OWD entered into an agreement with the City of San Diego, known as the Otay
Water Treatment Plant (WTP) Agreement. The Otay WTP Agreement provides for raw
water purchase from the Water Authority and treatment by the City of San Diego at their
Otay WTP for delivery to OWD. The supply system link to implement the Otay WTP
Agreement to access the regions raw water supply system and the local water treatment
plant became fully operational in August 2005. This supply link consists of the typical
storage, transmission, pumping, flow measurement, and appurtenances to receive and
transport the treated water to the OWD system. The City of San Diego obligation to
supply 10 mgd of treated water under the Otay WTP Agreement is contingent upon there
being available 10 mgd of surplus treatment capacity in the Otay WTP until such time as
OWD pays the City of San Diego to expand the Otay WTP to meet the OWD future
needs. In the event that the City of San Diego’s surplus is projected to be less than 10
mgd the City of San Diego will consider and not unreasonably refuse the expansion of
the Otay WTP to meet the OWD future needs. The Otay WTP existing rated capacity is
40 mgd with an actual effective capacity of approximately 34 mgd. The City of San
Diego’s typical demand for treated water from the Otay WTP is approximately 20 mgd.
It is at the City of San Diego’s discretion to utilize either imported raw water delivered
by the Water Authority Pipeline No. 3 or local water stored in Lower Otay Reservoir for
treatment to supply the OWD demand.
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• The OWD entered into an agreement with the Water Authority, known as the East
County Regional Treated Water Improvement Program (ECRTWIP Agreement). The
ECRTWIP Agreement provides for transmission of raw water to the Helix WD R. M.
Levy WTP for treatment and delivery to OWD. The supply system link to implement the
ECRTWIP Agreement is complete allowing access to the regions raw water supply
system and the local water treatment plant. This supply link consists of the typical
transmission, pumping, storage, flow control, and appurtenances to receive and transport
the potable water from the R. M. Levy WTP to OWD. The OWD is required to take a
minimum of 10,000 acre-feet per year of treated water from the R.M. Levy WTP
supplied from the regions raw water system.
Cost and Financing
The capital improvement costs associated with water supply and delivery are financed
through the OWD water meter capacity fee and user rate structures. The OWD potable water
sales revenue are used to pay for the wholesale cost of the treated water supply and the
operating and maintenance expenses of the potable water system facilities.
Written Agreements, Contracts, or Other Proof
The supply and cost associated with deliveries of treated water from the Otay WTP and the R.M.
Levy WTP is based on the following documents.
Agreement for the Purchase of Treated Water from the Otay Water Treatment Plant between the
City of San Diego and the Otay Water District. The OWD entered into an agreement dated
January 11, 1999 with the City of San Diego that provides for 10 mgd of surplus treated water to
the OWD from the existing Otay WTP capacity. The agreement allows for the purchase of
treated water on an as available basis from the Otay WTP. The OWD pays the Water Authority
at the prevailing raw water rate for raw water and pays the City of San Diego at a rate equal to
the actual cost of treatment to potable water standards.
Agreement between the San Diego County Water Authority and Otay Water District Regarding
Implementation of the East County Regional Treated Water Improvement Program. The
ECRTWIP Agreement requires the purchase of at least 10,000 acre-feet per year of potable water
from the Helix WD R.M. Levy WTP at the prevailing Water Authority treated water rate. The
ECRTWIP Agreement is dated April 27, 2006.
Agreement between the San Diego County Water Authority and Otay Water District for Design,
Construction, Operation, and Maintenance of the Otay 14 Flow Control Facility Modification.
The OWD entered into the Otay 14 Flow Control Facility Modification Agreement dated
January 24, 2007 with the Water Authority to increase the physical capacity of the Otay 14 Flow
Control Facility. The Water Authority and OWD shared the capital cost to expand its capacity
from 8 mgd to 16 mgd.
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Federal, State, and Local Permits/Approvals
The OWD acquired all the permits for the construction of the pipeline and pump station
associated with the Otay WTP supply source and for the 640-1 and 640-2 water storage
reservoirs project associated with the ECRTWIP Agreement through the typical planning,
environmental approval, design, and construction processes.
The transmission main project constructed about 26,000 feet of a 36-inch diameter steel
pipeline from the Otay 14 Flow Control Facility to the 640-1 and 640-2 Reservoirs project.
The Otay 14 Flow Control Facility modification increased the capacity of the existing systems
from 8 mgd to 16 mgd. CEQA documentation is complete for both projects. Construction of
both of these projects was completed October 2010.
The City of San Diego and the Helix Water District are required to meet all applicable federal,
state, and local health and water quality requirements for the potable water produced at the
Otay WTP and the R.M. Levy WTP respectively.
6.3.1.2 Recycled Water Supplies
Wastewater collection, treatment, and disposal services provided by the OWD is limited to a
relatively small area within what is known as the Jamacha Basin, located within the Middle
Sweetwater River Basin watershed upstream of the Sweetwater Reservoir and downstream of
Loveland Reservoir. Water recycling is defined as the treatment and disinfection of
municipal wastewater to provide a water supply suitable for non-potable reuse. The OWD
owns and operates the Ralph W. Chapman Water Reclamation Facility, which produces
recycled water treated to a tertiary level for landscape irrigation purposes. The recycled water
market area of the OWD is located primarily within the eastern area of the City of Chula Vista
and on the Otay Mesa. The OWD distributes recycled water to a substantial market area that
includes but is not limited to the U.S. Olympic Training Center, the Eastlake Golf Course,
Otay Ranch, and other development projects.
The OWD projects that annual average demands for recycled water will increase to 8,000
acre-feet per year by 2035. About 1,300 acre-feet per year of supply is generated by the
RWCWRF, with the remainder planned to be supplied to OWD by the City of San Diego’s
SBWRP.
North District Recycled Water Concept
The OWD is a recognized leader in the use of recycled water for irrigation and other
commercial uses. The OWD continues the quest to investigate all viable opportunities to
expand the successful recycled water program into areas that are not currently served. One of
these areas is in the portion of the service area designated as the North District, located within
the Middle Sweetwater River Basin watershed upstream of the Sweetwater River. The close
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proximity of the recycled water markets in the North District to the OWD source of recycled
water, the RWCWRF, means that the distribution system to serve this area could be
constructed relatively cost effectively. This makes the North District a logical location for the
expansion of the OWD recycled water system and market area.
The purpose of the North District Recycled Water System Development Project, Phase I
Concept Study, is to identify the feasibility of using recycled water in the North District and
to investigate and assess any limitations or constraints to its use. The Phase I study
components of the North District Recycled Water Concept encompassed the preparation of
six technical memorandums including the project definition, a discussion of the regulatory
process, a discussion of the protection of the watershed that would be affected by recycled
water use in the North District, identification of stakeholders, public outreach, and an
implementation plan.
Several opportunities that could be realized with the implementation of the use of recycled
water in the North District were identified. These include a reduction of demand on the
potable water system and maximizing recycled water resources which in turn minimizes
treated wastewater discharges to the local ocean outfall. Other opportunities are a possible
partnership with Sweetwater Authority to monitor any benefits and impacts of increased
recycled water use in the watershed and stakeholder outreach to resolve any water quality
concerns and to retain consumer confidence. Also identified were two major constraints
associated with the North District Recycled Water System Development Project. One
constraint is the water quality objectives for the Middle Sweetwater Basin that will affect the
effluent limitations for the recycled water produced at the RWCWRF. At this time, the
effluent limit that is of concern is total nitrogen. An examination as to how the treatment
process might be modified to enhance nitrogen removal and a design is underway to remedy
the total nitrogen issue. The other major constraint is the cost of the infrastructure needed to
convey and store recycled water in the North District. These costs are estimated to be in the
range of $14 to $15 million dollars.
There are two additional phases proposed for the North District Recycled Water System
Development Project. Phase II would include further investigation of the issues identified in
Phase I as requiring further study. These include stakeholder outreach, regulatory issues, and
facility planning. The third phase of the effort would include the facility planning, permitting,
environmental compliance, design, and construction of the improvements necessary for
delivery of recycled water to the North District markets.
The estimated amount of imported water saved at full implementation of the North District
Recycled Water System Development Project is 1,200 acre-feet per year. This saved
imported water could then be used to offset new potable water demands.
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Recycled Water System Facilities
The OWD has and continues to construct recycled water storage, pumping, transmission, and
distribution facilities to meet projected recycled water market demands. For nearly 20 years,
millions of dollars of capital improvements have been constructed. The supply link consisting
of a transmission main, storage reservoir, and a pump station to receive and transport the
recycled water from the City of San Diego’s SBWRP are complete and recycled water
deliveries began on May 18, 2007.
Cost and Financing
The capital improvement costs associated with the recycled water supply and distribution
systems are financed through the OWD water meter capacity fee and user rate structures. The
OWD recycled water sales revenue, along with MWD and the Water Authority’s recycled
water sales incentive programs are used to help offset the costs for the wholesale purchase and
production of the recycled water supply, the operating and maintenance expenses, and the
capital costs of the recycled water system facilities.
Written Agreements, Contracts, or Other Proof
The supply and cost associated with deliveries of recycled water from the SBWRP is based on
the following document.
Agreement between the Otay Water District and the City of San Diego for Purchase of
Reclaimed Water from the South Bay Water Reclamation Plant. The agreement provides for the
purchase of at least 6,721 acre-feet per year of recycled water from the SBWRP at an initial price
of $350 per acre-foot. The Otay Water District Board of Directors approved the final agreement
on June 4, 2003 and the San Diego City Council approved the final agreement on October 20,
2003.
Federal, State, and Local Permits/Approvals
The OWD has in place an agreement with MWD for their recycled water sales incentive
program for supplies from the RWCWRF and the SBWRP. Also, the OWD has in place an
agreement with the Water Authority for their recycled water sales incentive program for
supplies from the RWCWRF and the SBWRP. The Water Authority sales incentive
agreement was approved by Water Authority on July 26, 2007 and by OWD on August 1,
2007. All permits for the construction of the recycled water facilities to receive, store, and
pump the SBWRP supply have been acquired through the typical planning, environmental
approval, design, and construction processes.
The California Regional Water Quality Control Board San Diego Region (RWQCB) “Master
Reclamation Permit for Otay Water District Ralph W. Chapman Reclamation Facility” was
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adopted on May 9, 2007 (Order No. R9-2007-0038). This order establishes master
reclamation requirements for the production, distribution, and use of recycled water in the
OWD service area. The order includes the use of tertiary treated water produced and received
from the City of San Diego‘s SBWRP. Recycled water received from and produced by the
SBWRP is regulated by Regional Board Order No. 2000-203 and addenda. The City of San
Diego is required to meet all applicable federal, state, and local health and water quality
requirements for the recycled water produced at the SBWRP and delivered to OWD in
conformance with Order No. 2000-203.
6.3.1.3 Potential Groundwater Supplies
The Otay Water District WRMP Update, 2010 UWMP, and the Otay Water District March
2007 Integrated Water Resources Plan (2007 IRP) all contain a description of the
development of potential groundwater supplies. Over the past several years, OWD has studied
numerous potential groundwater supply options that have shown, through groundwater
monitoring well activities, poor quality water and/or insufficient yield from the basins at a
cost effective level. The OWD has developed capital improvement program projects to
continue the quest to develop potential groundwater resources. Local OWD groundwater
supply development is currently considered as a viable water supply resource to meet
projected demands.
The development and/or acquisition of potential groundwater supply projects by the OWD
have evolved and have been resurrected in response to the regional water supply issues related
to water source supply conditions. Local ground water supply projects will allow for less
reliance upon imported water, achieve a level of independence of the regional wholesale
water agencies, and diversify the OWD water supply portfolio consistent the Otay Water
District 2007 IRP.
In recognition of the need to develop sufficient alternative water supplies, the OWD has taken
the appropriate next steps towards development of production groundwater well projects.
There are three groundwater well projects that the OWD is actively pursuing to develop as
new local water supplies. They are known as the Middle Sweetwater River Basin
Groundwater Well, the Otay Mesa Lot 7 Groundwater Well, and the Rancho del Rey
Groundwater Well projects.
Middle Sweetwater River Basin Groundwater Well
The Middle Sweetwater River Basin Groundwater Well is an additional water supply project
that was thoroughly studied and documented in the 1990s. The Middle Sweetwater River
Basin is located within the Sweetwater River watershed and that reach of the river extends
from Sweetwater Reservoir to the upstream Loveland Reservoir. The next step in
development of the Middle Sweetwater River Basin Groundwater Well is the implementation
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of a pilot well project. The ultimate objective of the OWD is to develop a groundwater well
production system within the Middle Sweetwater River Basin capable of producing a
sustainable yield of potable water as a local supply.
The purpose of the Middle Sweetwater River Basin Groundwater Well Pilot project is to
identify the feasibility of developing a groundwater resource production system and then
determine and assess any limitations or constraints that may arise. The Middle Sweetwater
River Basin Groundwater Well Pilot Project will accomplish six primary goals:
• Update project setting
• Update applicable project alternatives analysis
• Prepare groundwater well pilot project implementation plan
• Construct and test pilot monitoring and extraction wells
• Provide recommendations regarding costs and feasibility to develop a groundwater
well production system within the Middle Sweetwater River Basin capable of
producing a sustainable yield of potable water
• Prepare groundwater well production project implementation plan and scope of work
The groundwater conjunctive use concept is described as the extraction of the quantity of
water from the groundwater basin that was placed there by customers of the Otay Water
District, Helix Water District, and Padre Dam Municipal Water District by means of their use
of imported treated water that contributed to the overall volume of groundwater within the
basin. An estimated quantity was developed to be approximately 12.5 percent of the total
consumption of the OWD customers within that basin, as measured by water meters. In the
1994-1995 period, the quantity of water that was returned to the groundwater basin by OWD
customers was estimated to be 810 acre-feet per year. Currently, that 12.5 percent quantity
could be on the order of 1,000 acre-feet per year. A future scope of work will need to
addresses this concept while considering further development of the groundwater basin as an
additional supply resource. If it is deemed that a Middle Sweetwater River Basin
Groundwater Well Production Project is viable then the consultant will develop and provide a
groundwater well production project implementation plan, cost estimate, and related scope of
work.
Further development of the groundwater basin to enhance the total groundwater production
could be accomplished by the OWD by means of additional extraction of water from the basin
that is placed there by means of either injection and/or spreading basins using imported
untreated water as the resource supply. The existing La Mesa Sweetwater Extension Pipeline,
owned by the Water Authority, once converted to an untreated water delivery system, could
be the conveyance system to transport untreated water for groundwater recharge in support of
this conjunctive use concept. These two distinct water resource supply conjunctive use
concepts will be addressed so they may coexist and to allow for their development as separate
phases.
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The scope of work to complete Middle Sweetwater River Basin Groundwater Well Pilot
Project consists of many major tasks and is to address the groundwater supply concepts
outlined above. It is anticipated that the cost for the entire scope of work, will be on the order
of $2,000,000, which includes a contingency and may take up to one and a half years to
complete.
The primary desired outcome of the Middle Sweetwater River Basin Groundwater Well Pilot
Project is for the engineering consultant to determine and make recommendations if it is
financially prudent and physically feasible to develop a Phase I groundwater well production
system within the Middle Sweetwater River Basin capable of producing a sustainable yield of
up to 1,500 ac-ft/yr of potable water for the OWD. If it is deemed that a Middle Sweetwater
River Basin Groundwater Well Production Project is viable then the consultant will develop
and provide a groundwater well production project implementation plan and related scope of
work.
Otay Mesa Lot 7 Groundwater Well
In early 2001 the OWD was approached by a landowner representative about possible interest
in purchasing an existing well or alternatively, acquiring groundwater supplied from the well
located on Otay Mesa. The landowner, National Enterprises, Inc., reportedly stated that the
well could produce 3,200 acre-feet per year with little or no treatment required prior to
introducing the water into the OWD potable water system or alternatively, the recycled water
system. In March 2001 authorization to proceed with testing of the Otay Mesa Lot 7
Groundwater Well was obtained and the OWD proceeded with the investigation of this
potential groundwater supply opportunity.
The May 2001 Geoscience Support Services, Inc. completed for the OWD the preparation of
a report entitled, “Otay Mesa Lot 7 Well Investigation,” to assess the Otay Mesa Lot 7 Well.
The scope of work included a geohydrologic evaluation of the well, analyses of the water
quality samples, management and review of the well video log, and documentation of well
pump testing. The primary findings, as documented in the report, formed the basis of the
following recommendations:
• For the existing well to be use as a potable water supply resource, a sanitary seal must
be installed in accordance with the CDPH guidelines.
• Drawdown in the well must be limited to avoid the possibility of collapsing the casing.
• Recover from drawdown from pumping is slow and extraction would need to be
terminated for up to 2 days to allow for groundwater level recovery.
• The well water would need to be treated and/or blended with potable water prior to
introduction into the potable water distribution system.
The existing Otay Mesa Lot 7 Well, based upon the above findings, was determined not to be
a reliable municipal supply of potable water and that better water quality and quantity perhaps
could be discovered deeper or at an alternative location within the San Diego Formation.
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The OWD may still continue to pursue the Otay Mesa groundwater well opportunity with due
consideration of the recommendations of the existing report. Based on the recommendations
of the investigation report, a groundwater well production facility at Otay Mesa Lot 7 could
realistically extract approximately 300 acre-feet per year.
Rancho del Rey Groundwater Well
In 1991, the McMillin Development Company drilled the Rancho del Rey Groundwater Well
to augment grading water supplies for their Rancho del Rey development projects. Although
the well was considered a “good producer,” little was known regarding its water quality and
sustainable yield because the water was used solely for earthwork (i.e. dust control and soil
compaction). The well was drilled to 865 feet, with a finished depth of 830 feet and produced
approximately 400 acre-feet per year of low quality water for four years until its use was
discontinued in April 1995 when the well was no longer needed. McMillin notified the OWD
of its intent to sell off the groundwater well asset.
In 1997, the OWD purchased an existing 7-inch well and the surrounding property on Rancho
del Rey Parkway from the McMillin Company with the intent to develop it as a source of
potable water. Treatment was required to remove salts and boron, among other constituents,
using reverse osmosis membranes and ion exchange.
In 2000, having received proposals for the design and construction of a reverse osmosis
treatment facility that far exceeded the allocated budget, the Board of Directors instructed
staff to suspend the project until such time as it became economically viable.
In January 2010, citing the rising cost of imported water and the OWD's interest in securing
its own water source for long-term supply reliability, the Board authorized Phase 1 for drilling
and development of the Rancho del Rey Well.
On March 3, 2010, the Board adopted the Mitigated Negative Declaration for this project and
a Notice of Determination was filed with the County of San Diego on March 5, 2010. In
September 2010, a new 12-inch production well was drilled to a depth of 900 feet through the
groundwater formation and into fractured bedrock. Testing showed the long-term yield of the
new well to be 450 gpm, higher than previous studies had estimated. Separation Processes,
Inc. (SPI), a highly qualified membrane treatment firm, was hired to conduct a detailed
economic feasibility study to confirm that the annualized unit cost of the new water source
was economically competitive with other sources. The economic study estimated the unit
cost of water to be $1, 500 to $2,000 per acre-feet for an alternative that utilizes a seawater
membrane for treating both salts and boron. When compared with the current imported
treated water rate from the Water Authority, and with the knowledge that this rate will
continually increase as MWD and the Water Authority raise their rates, the Rancho del Rey
Well project appears to be economically viable.
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The OWD is continuing to pursue the Rancho del Rey groundwater well opportunity with due
consideration of the recommendations of the existing reports and plans to develop a
groundwater well production facility to extract approximately 500 acre-feet per year. For
water planning purposes, production of groundwater from the Rancho del Rey well is
considered “additional planned” for local supplies. During preparation of this 2010 UWMP,
the OWD has contracted for design services for the wellhead treatment facilities.
6.3.1.4 Otay Water District Desalination Project
The OWD is currently investigating the feasibility of purchasing desalinated water from a
seawater reverse osmosis plant that is planned to be located in Rosarito, Mexico, known as the
Otay Mesa Desalinated Water Conveyance System (Desalination) project. The treatment
facility is intended to be designed, constructed, and operated in Mexico by a third party. The
OWD’s draft Desalination Feasibility Study, prepared in 2008, discusses the likely issues to
be considered in terms of water treatment and monitoring, potential conveyance options
within the United States from the international border to potential delivery points, and
environmental, institutional, and permitting considerations for the OWD to import the
Desalination project product water as a new local water supply resource.
While the treatment facility for the Desalination project will likely not be designed or
operated by the OWD as the lead agency, it is important that the OWD maintain involvement
with the planning, design, and construction of the facility to ensure that the implemented
processes provide a product water of acceptable quality for distribution and use within the
OWD’s system as well as in other regional agencies’ systems that may use the product water,
i.e. City of San Diego, the Water Authority, etc. A seawater reverse osmosis treatment plant
removes constituents of concern from the seawater, producing a water quality that far exceeds
established United States and California drinking water regulations for most parameters,
however, a two-pass treatment system may be required to meet acceptable concentrations of
boron and chlorides, similar to the levels seen within the existing OWD supply sources. The
Desalination Feasibility Study addresses product water quality that is considered acceptable
for public health and distribution.
The OWD, or any other potential participating agencies, will be required to get approval from
the CDPH in order to use the desalinated seawater as a water source. Several alternative
approaches are identified for getting this approval. These alternatives vary in their cost and
their likelihood of meeting CDPH approval.
The Rosarito Desalination Facility Conveyance and Disinfection System Project report
addresses two supply targets for the desalinated water (i.e. local and regional). The local
alternative assumes that only OWD would participate and receive desalinated water, while the
regional alternative assumes that other regional and/or local agencies would also participated
in the Rosarito project.
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On November 3, 2010, the OWD authorized the General Manager to enter into an agreement
with AECOM for the engineering design, environmental documentation, and the permitting
for the construction of the conveyance pipeline, pump station, and disinfection facility to be
constructed within the OWD. The supply target is assumed to be 50 mgd while the ultimate
capacity of the plant will be 100 mgd.
The OWD is proceeding with negotiations among the parties to establish water supply
resource acquisition terms through development of a Principles of Understanding document.
6.3.2 Otay Water District Capital Improvement Program
The OWD plans, designs, constructs, and operates water system facilities to acquire sufficient
supplies and to meet projected ultimate demands placed upon the potable and recycled water
systems. In addition, the OWD forecasts needs and plans for water supply requirements to meet
projected demands at ultimate build out. The necessary water facilities and water supply projects
are implemented and constructed when development activities proceed and require service to
achieve timely and adequate cost effective water service.
New water facilities that are required to accommodate the forecasted growth within the entire
OWD service area are defined and described within the Otay Water District WRMP Update.
These facilities are incorporated into the annual OWD Six Year Capital Improvement Program
(CIP) for implementation when required to support development activities. As major
development plans are formulated and proceed through the land use jurisdictional agency
approval processes, OWD prepares water system requirements specifically for the proposed
development project consistent with the Otay Water District WRMP Update. These
requirements document, define, and describe all the potable water and recycled water system
facilities to be constructed to provide an acceptable and adequate level of service to the proposed
land uses, as well as the financial responsibility of the facilities required for service. The OWD
funds the facilities identified as CIP projects. Established water meter capacity fees and user
rates are collected to fund the CIP project facilities. The developer funds all other required water
system facilities to provide water service to their project.
Section 7 – Conclusion: Availability of Sufficient Supplies
The Otay Tech Centre Project is currently located within the jurisdictions of the OWD, Water
Authority, and MWD. To obtain permanent imported water supply service, land areas are
required to be within the jurisdictions of the OWD, Water Authority, and MWD to utilize
imported water supply.
The Water Authority and MWD have an established process that ensures supplies are being
planned to meet future growth. Any annexations and revisions to established land use plans
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are captured in the San Diego Association of Governments (SANDAG) updated forecasts for
land use planning, demographics, and economic projections. SANDAG serves as the
regional, intergovernmental planning agency that develops and provides forecast information.
The Water Authority and MWD update their demand forecasts and supply needs based on the
most recent SANDAG forecast approximately every five years to coincide with preparation of
their urban water management plans. Prior to the next forecast update, local jurisdictions with
land use authority may require water supply assessment and/or verification reports for
proposed land developments that are not within the OWD, Water Authority, or MWD
jurisdictions (i.e. pending or proposed annexations) or that have revised land use plans with
either lower or higher development intensities than reflected in the existing growth forecasts.
Proposed land areas with pending or proposed annexations, or revised land use plans,
typically result in creating higher demand and supply requirements than previously
anticipated. The OWD, Water Authority, and MWD next demand forecast and supply
requirements and associated planning documents would then capture any increase or decrease
in demands and required supplies as a result of annexations or revised land use planning
decisions.
MWD’s Integrated Resources Plan (IRP) identifies a mix of resources (imported and local)
that, when implemented, will provide 100 percent reliability for full-service demands through
the attainment of regional targets set for conservation, local supplies, State Water Project
supplies, Colorado River supplies, groundwater banking, and water transfers. The 2010
update to the IRP includes a planning buffer supply intended to mitigate against the risks
associated with implementation of local and imported supply programs and for the risk that
future demands could be higher than projected. The planning buffer identifies an additional
increment of water that could potentially be developed when needed and if other supplies are
not fully implemented as planned. As part of implementation of the planning buffer, MWD
periodically evaluates supply development, supply conditions, and projected demands to
ensure that the region is not under or over developing supplies. Managed properly, the
planning buffer will help ensure that the southern California region, including San Diego
County, will have adequate water supplies to meet long-term future demands.
In Section ES-5 of their 2010 RUWMP, MWD states that MWD has supply capacities that
would be sufficient to meet expected demands from 2015 through 2035. MWD has plans for
supply implementation and continued development of a diversified resource mix including
programs in the Colorado River Aqueduct, State Water Project, Central Valley Transfers,
local resource projects, and in-region storage that enables the region to meet its water supply
needs. MWD’s 2010 RUWMP identifies potential reserve supplies in the supply capability
analysis (Tables 2-9, 2-10, and 2-11), which could be available to meet the unanticipated
demands.
The County Water Authority Act, Section 5 subdivision 11, states that the Water Authority
“as far as practicable, shall provide each of its member agencies with adequate supplies of
water to meet their expanding and increasing needs.”
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As part of preparation of a written water supply assessment report, an agency’s shortage
contingency analysis should be considered in determining sufficiency of supply. Section 11
of the Water Authority’s 2010 Updated UWMP contains a detailed shortage contingency
analysis that addresses a regional catastrophic shortage situation and drought management.
The analysis demonstrates that the Water Authority and its member agencies, through the
Emergency Response Plan, Emergency Storage Project, Carlsbad Desalination Project, and
Drought Management Plan (DMP) are taking actions to prepare for and appropriately handle
an interruption of water supplies. The DMP, adopted in May 2006, provides the Water
Authority and its member agencies with a series of potential actions to take when faced with a
shortage of imported water supplies from MWD due to prolonged drought or other supply
shortfall conditions. The actions will help the region avoid or minimize the impacts of
shortages and ensure an equitable allocation of supplies.
The WSA Report identifies and describes the processes by which water demand projections
for the proposed Otay Tech Centre Project will be fully included in the water demand and
supply forecasts of the Urban Water Management Plans and other water resources planning
documents of the Water Authority and MWD. Water supplies necessary to serve the demands
of the proposed Otay Tech Centre Project, along with existing and other projected future
users, as well as the actions necessary and status to develop these supplies, have been
identified in the Otay Tech Centre Project WSA Report and will be included in the future
water supply planning documents of the Water Authority and MWD.
This WSA Report includes, among other information, an identification of existing water
supply entitlements, water rights, water service contracts, water supply projects, or
agreements relevant to the identified water supply needs for the proposed Otay Tech Centre
Project. This WSA Report assesses, demonstrates, and documents that sufficient water
supplies are planned for and are intended to be available over a 20-year planning horizon,
under normal conditions and in single and multiple dry years to meet the projected demand of
the proposed Otay Tech Centre Project and the existing and other planned development
projects to be served by the OWD.
Table 7 presents the forecasted balance of water demands and required supplies for the OWD
service area under average or normal year conditions. The total actual demand for FY 2010
was 33,270 acre feet. The demand for FY 2010 is 5,635 acre feet lower than the demand in
FY 2005 of 38,905 acre feet. The drop in demand is a result of the unit price of water, the
conservation efforts of users as a result of the prolonged drought, and the economy.
Table 8 presents the forecasted balance of water demands and supplies for the OWD service
area under single dry year conditions. Table 8 presents the forecasted balance of water
demands and supplies for the OWD service area under multiple dry year conditions for the
three year period ending in 2018. The multiple dry year conditions for periods ending in
2023, 2028, and 2033 are provided in the Otay Water District 2010 UWMP. The projected
potable demand and supply requirements shown the Tables 7 and 8 are from the Otay Water
District 2010 UWMP adjusted to reflect the additional 75.6 acre-feet per year of potable water
Otay Water District
Water Supply Assessment Report
Otay Tech Centre Project
55
demand for the Otay Tech Centre Project. Hot, dry weather may generate urban water
demands that are about 6.4 percent greater than normal. This percentage was utilized to
generate the dry year demands shown in Table 8. The recycled water supplies are assumed to
experience no reduction in a dry year.
Table 7
Projected Balance of Water Demands and Supplies Normal Year Conditions (acre feet)
Description FY 2015 FY 2020 FY 2025 FY 2030 FY 2035
Demands
OWD Demands 44,883 53,768 63,811 70,669 77,171
Additional Conservation Target 0 (7,447) (13,996) (17,895) (20,557)
Total Demand 44,883 46,321 49,815 52,774 56,614
Supplies
Water Authority Supply 40,483 41,321 44,015 45,974 48,614
Recycled Water Supply 4,400 5,000 5,800 6,800 8,000
Total Supply 44,883 46,321 49,815 52,774 56,614
Supply Surplus/(Deficit) 0 0 0 0 0
Table 8 presents the forecasted balance of water demands and supplies for the OWD service
area under single dry year and multiple dry year conditions as from the Otay Water District
2010 UWMP.
Table 8
Projected Balance of Water Demands and Supplies
Single Dry and Multiple Dry Year Conditions (acre feet)
Normal
Year
Single
Dry Year Multiple Dry Years
FY 2011 FY 2012 FY 2013 FY 2014 FY 2015
Demands
OWD Demands 37,176 41,566 43,614 46,385 50,291
Total Demand 37,176 41,566 43,614 46,385 50,291
Supplies
Water Authority Supply 33,268 37,535 39,460 42,108 45,891
Recycled Water Supply 3,908 4,031 4,154 4,277 4,400
Total Supply 37,176 41,566 43,614 46,385 50,291
Supply Surplus/(Deficit) 0 0 0 0 0
District Demand totals with SBX7-7 conservation target achievement plus single dry year increase as shown.
The Water Authority could implement its DMP. In this instances, the Water Authority may have to allocate supply
shortages based on it equitable allocation methodology in its DMP.
Otay Water District
Water Supply Assessment Report
Otay Tech Centre Project
56
Dry year demands assumed to generate a 6.4% increase in demand over normal conditions for
each year in addition to new demand growth.
Table 8 also presents the forecasted balance of water demands and supplies for the OWD
service area under multiple dry year conditions for the three year period ending in 2015.
In evaluating the availability of sufficient water supply, the Otay Tech Centre Project
development proponents will be required to participate in the development of alternative
water supply project(s). This can be achieved through payment of the New Water Supply Fee
adopted by the OWD Board in May 2010. These water supply projects are in addition to
those identified as sustainable supplies in the current Water Authority and MWD UWMP,
IRP, Master Plans, and other planning documents. These new water supply projects are in
response to the regional water supply issues related to climatological, environmental, legal,
and other challenges that impact water source supply conditions, such as the court rulings
regarding the Sacramento-San Joaquin Delta and the current ongoing western states drought
conditions. These new additional water supply projects are not currently developed and are in
various stages of the planning process. The OWD water supply development program
includes but is not limited to projects such as the Middle Sweetwater River Basin
Groundwater Well project, the North District Recycled Water Supply Concept, the OWD
Desalination project, and the Rancho del Rey Groundwater Well project. The Water
Authority and MWD’s next forecasts and supply planning documents would capture any
increase in water supplies resulting from any new water resources developed by the OWD.
The OWD acknowledges the ever-present challenge of balancing water supply with demand
and the inherent need to possess a flexible and adaptable water supply implementation
strategy that can be relied upon during normal and dry weather conditions. The responsible
regional water supply agencies have and will continue to adapt their resource plans and
strategies to meet climate, environmental, and legal challenges so that they may continue to
provide water supplies to their service areas. The regional water suppliers along with OWD
fully intend to maintain sufficient reliable supplies through the 20-year planning horizon
under normal, single, and multiple dry year conditions to meet projected demand of the Otay
Tech Centre Project, along with existing and other planned development projects within the
OWD service area.
This WSA Report assesses, demonstrates, and documents that sufficient water supplies are
planned for and are intended to be acquired, as well as the actions necessary and status to
develop these supplies, to meet projected water demands of the Otay Tech Centre Project as
well as existing and other reasonably foreseeable planned development projects within the
OWD for a 20-year planning horizon, in normal and in single and multiple dry years.
Otay Water District
Water Supply Assessment Report
Otay Tech Centre Project
57
Source Documents
Sunroad Otay Partners, LP, December, 2012, Letter Request to Initiate the Preparation of a
Water Supply Assessment for the Otay Tech Centre. Compliance request letter received
January 28, 2013.
City of Chula Vista, “Otay Ranch General Development Plan/Sub-regional Plan, The Otay Ranch
Joint Planning Project,” October 1993 amended June 1996.
County of San Diego, “East Otay Mesa Specific Plan Area,” adopted July 27, 1994.
Otay Water District, “2008 Water Resources Master Plan Update,” dated November 2010.
Atkins and Otay Water District, “Otay Water District 2010 Urban Water Management Plan,”
June 2011.
Camp Dresser & McKee, Inc., “Otay Water District Integrated Water Resources Plan,” March
2007
San Diego County Water Authority, “Urban Water Management Plan 2010 Update,” May
2011.
MWD Water District of Southern California, “Regional Urban Water Management Plan,”
November 2010.
Camp Dresser & McKee, Inc., “Rosarito Desalination Facility Conveyance and Disinfection
System Project,” June 21, 2010.
PBS&J, “Draft Otay Water District North District Recycled Water System Development
Project, Phase I Concept Study,” December 2008.
NBS Lowry, “Middle Sweetwater River System Study Water Resources Audit,” June 1991.
Michael R. Welch, “Middle Sweetwater River System Study Alternatives Evaluation,” May
1993.
Michael R. Welch, “Middle Sweetwater River Basin Conjunctive Use Alternatives,”
September 1994.
Geoscience Support Services, Inc., “Otay Mesa Lot 7 Well Investigation,” May 2001.
Boyle Engineering Corporation, “Groundwater Treatment Feasibility Study Ranch del Rey
Well Site,” September 1996.
Otay Water District
Water Supply Assessment Report
Otay Tech Centre Project
58
Agreement for the Purchase of Treated Water from the Otay Water Treatment Plant between
the City of San Diego and the Otay Water District.
Agreement between the San Diego County Water Authority and Otay Water District regarding
Implementation of the East County Regional Treated Water Improvement Program.
Agreement between the San Diego County Water Authority and Otay Water District for
Design, Construction, Operation, and Maintenance of the Otay 14 Flow Control Facility
Modification.
Agreement between the Otay Water District and the City of San Diego for Purchase of
Reclaimed Water from the South Bay Water Reclamation Plant.
Otay Water District
Water Supply Assessment Report
Otay Tech Centre
59
Appendix A
Otay Tech Centre Project Vicinity Map
Otay Water District
Water Supply Assessment Report
Otay Tech Centre
60
Appendix B
Otay Tech Centre Project Development Plan
Otay Water District Board of Directors Meeting
March 6, 2013
Water Supply
Assessment Reports
for the Sunroad
Otay Tech Centre and
Otay Plaza Projects
SB 610 Compliance
OTAY TECH CENTRE
OTAY PLAZA
Background
Senate Bills 610 and 221 became effective on January 1,
2002, with the primary intent to improve the link between
water supply availability and land use decisions.
SB 610 Water Supply Assessment (WSA): Requires water purveyor to prepare a Water Supply Assessment report for inclusion in agency CEQA
documentation.
SB 221 Water Supply Verification: Does not apply to the Sunroad Projects which are
Industrial/Commercial subdivisions.
The Otay Tech Centre Project and Otay Plaza Water
Supply Assessment Reports: Board approval required for submittal of the WSAs to
the City of San Diego and County of San Diego.
2
Otay Tech Centre Project
3
253.1 Acre site
52 Commercial/Industrial Lots
Lots size varies ~ 1.8 – 5.3 Acres
Water Demand
178.7 AFY Potable
23 AFY Recycled
Otay Plaza Project
3
51.9 Acre site
20 Commercial/Industrial Lots
Water Demand
101.9 AFY Potable
11.9 AFY Recycled
Water Supply Assessment Reports for the
Sunroad
Otay Tech Centre and Otay Plaza Projects
Potable Water
Demands
2010 WRMP
Estimated Potable
Water Demands
Recycled Water
Demands
GPD AFY AFY GPD AFY
Otay Tech Centre 159,510 178.7 304.3 20,580 23
Otay Plaza 90,939 101.9 53 10,581 11.9
Total 250,449 280.6 357.3 31,161 34.9
Water Supply Assessment Reports
The regional and local water supply agencies
acknowledge the challenges and fully intend to
develop sufficient, reliable supplies to meet
demands.
Water suppliers recognize additional water
supplies are necessary and portfolios need to be
reassessed and redistributed with intent to serve
existing and future needs.
4
Water Supply Assessment Reports
The Reports documents the planned water supply
projects and the actions necessary to develop the
supplies.
Water supply for the Projects and for existing and
future developments within the District for a 20-
year planning horizon, under normal and in single
and multiple dry years, are planned for and are
intended to be made available.
5
Otay Water District
Planned Local Water Supply Projects
Rancho Del Rey Groundwater Well (500 AFY)
Rosarito Ocean Desalination Project (20,000-50,000 AFY)
Otay Mesa Lot 7 Groundwater Well (300 AFY)
Otay Mesa Recycled Water Supply Link Project (800 AFY)
6
7
Normal
Year
Single
Dry Year Multiple Dry Years
FY 2011 FY 2012 FY 2013 FY 2014 FY 2015
Demands
Otay Water District Demands 37,176 41,566 43,614 46,385 50,291
Total Demand 37,176 41,566 43,614 46,385 50,291
Supplies
Water Authority Supply 33,268 37,535 39,460 42,108 45,891
Recycled Water Supply 3,908 4,031 4,154 4,277 4,400
Total Supply 37,176 41,566 43,614 46,385 50,291
Supply Surplus/(Deficit) 0 0 0 0 0
Table 8 of Otay Tech Centre WSA Report and Otay Plaza WSA Report based on data from Table
30 on page 41 of OWD 2010 UWMP
District Demand totals with SBX7-7 conservation target achievement with single dry
year and multiple dry year increase as shown. The Water Authority could implement its
DMP. In these instances, the Water Authority may have to allocate supply shortages based on
the equitable allocation methodology in its DMP.
Otay Water District
Projected Balance of Supply and Demand
Conclusion
Water demand and supply forecasts are
included in the planning documents of MWD,
Water Authority, and the Otay Water District.
Actions necessary to develop the identified
water supplies are documented.
The Otay Tech Centre Project and Otay Plaza
Project SB 610 WSA demonstrates and
documents that sufficient water supplies are
planned for and are intended to be available
over the next 20 years.
8
It is believed that the Board has met the
intent of SB 610 statute in that:
1)Land use agencies and water
suppliers have demonstrated strong
linkage.
2)The Otay Tech Centre Project and
Otay Plaza Project Water Supply
Assessment clearly documents the
current water supply situation.
Conclusion continued
9
Staff Recommendation
That the Board of Directors approve the
Senate Bill 610 Water Supply Assessment
Report dated January 2013 for the Otay Tech
Centre Project.
That the Board of Directors approve the
Senate Bill 610 Water Supply Assessment
Report dated January 2013 for the Otay Plaza
Project.
10
Questions ?
Water Supply
Assessment Reports
for the Sunroad
Otay Tech Centre and
Otay Plaza Projects
SB 610 Compliance
OTAY TECH CENTRE
OTAY PLAZA
STAFF REPORT
TYPE MEETING: Regular Board MEETING DATE: March 6, 2013
SUBMITTED BY: Bob Kennedy
Senior Civil Engineer
Ron Ripperger
Engineering Manager
CIP./G.F. NO: D0362-
090143
DIV. NO. 2
APPROVED BY:
Rod Posada, Chief, Engineering
German Alvarez, Asst General Manager
Mark Watton, General Manager
SUBJECT: Approval of Water Supply Assessment Report (January 2013) for
the Otay Plaza Project
GENERAL MANAGER’S RECOMMENDATION:
That the Otay Water District (District) Board of Directors
(Board) approve the Water Supply Assessment Report (WSA Report)
dated January 2013 for the Otay Plaza Project, as required by
Senate Bill 610 (see Exhibit A for Project location).
COMMITTEE ACTION:
Please see Attachment A.
PURPOSE:
To obtain Board approval of the January 2013 WSA Report for the
Otay Plaza Project, as required by Senate Bill 610 (SB 610).
ANALYSIS:
Sunroad Otay Partners, LP submitted an entitlement application
to the City of San Diego for the development of the 51.9 acre
project (Otay Plaza Project). The Twenty (20)
Commercial/Industrial lot tentative map is located within the
Otay Mesa Community Planning area within the City of San Diego.
SB 610 requires the agency conducting the environmental review
to evaluate whether total water supplies will meet the projected
water demand for certain “projects” that are otherwise subject
to the requirement of the California Environmental Quality Act
AGENDA ITEM 5
2
(CEQA). SB 610 provides its own definition of “project” in
Water Code Section 10912. The City of San Diego submitted a
request for a WSA to the District pursuant to SB 610. In
response to such request, SB 610 requires that, upon request of
the agency conducting the environmental review, a water
purveyor, such as the District, prepare the water supply
assessment to be included in the CEQA documentation.
The requirements of SB 610 are addressed by the WSA Report for
the Otay Plaza Project. Prior to transmittal to the City of San
Diego, the WSA Report must be approved by the District Board.
Additional information of the intent of SB 610 is provided in
Exhibit B and the Otay Plaza Project WSA Report is attached as
Exhibit C.
For the Otay Plaza Project, the City of San Diego is the
responsible agency that requested the SB 610 water supply
assessment from the District, as the water purveyor for the
proposed Otay Plaza Project. The request for the WSA Report, in
compliance with SB 610 requirements, was made by the City of San
Diego because the Otay Plaza Project meets or exceeds one or
both of the following SB 610 criteria:
A proposed industrial, manufacturing or processing plant or
industrial park planned to house more than 1,000 persons,
occupying more than 40 acres of land, or having more than
650,000 square feet of area.
A project that would demand an amount of water equivalent
to, or greater than, the amount of water required by a 500
dwelling unit project.
The District, as the proposed water purveyor for the Otay Plaza
Project, does not have to comply with the requirements of Senate
Bill 221 (SB 221) because the Project is an industrial
development and SB 221 applies to residential subdivisions.
Pursuant to SB 610, the WSA Report incorporates by reference the
current Urban Water Management Plans and other water resources
planning documents of the District, the San Diego County Water
Authority (Water Authority), and the Metropolitan Water District
of Southern California (MWD). The District prepared the WSA
Report in consultation with Dexter Wilson Engineering, Inc. and
the Water Authority which demonstrates and documents that
sufficient water supplies are planned for and are intended to be
made available over a 20-year planning horizon under normal
supply conditions and in single and multiple dry years to meet
3
the projected demand of the Otay Plaza Project and other planned
development projects within the District.
The expected potable water demand for the Otay Plaza Project is
90,939 gallons per day (gpd) or about 101.9 acre-feet per year
(AFY). The rezone of the property to Commercial-Regional is
expected to increase the water demand for this project above
what was projected in the District’s 2008 Water Resources Master
Plan updated November 2010 which estimated 53 AFY for the same
parcels, but with a lower industrial use for the property. The
projected recycled water demand for the Otay Plaza Project is
10,581 gpd or 11.9 AFY, representing about 10% of the total Otay
Plaza Project water demand.
MWD’s Integrated Resource Plan (IRP) identifies a mix of
resources (imported and local) that, when implemented, will
provide 100 percent reliability for full-service demands through
the attainment of regional targets set for conservation, local
supplies, State Water Project supplies, Colorado River supplies,
groundwater banking, and water transfers. MWD’s 2010 update to
the IRP (2010 IRP Update) includes a water supply planning
buffer to mitigate the risk associated with implementation of
local and imported supply programs. The planning buffer
identifies an additional increment of water that could
potentially be developed if other supplies are not implemented
as planned. As part of the establishment of the planning
buffer, MWD periodically evaluates supply development to ensure
that the region is not under- or over-developing supplies. If
managed properly, the planning buffer, along with other
alternative supplies, will help ensure that the Southern
California region, including San Diego County, will have
adequate supplies to meet future demands.
The County Water Authority Act, Section 5, Subdivision 11,
states the Water Authority, “as far as practicable, shall
provide each of its member agencies with adequate supplies of
water to meet their expanding and increasing needs.”
The intent of the SB 610 legislation is that the land use
agencies and the water agencies coordinate their efforts in
planning for new development and thus plan for sufficient water
supplies to meet the needs.
As per the requirements of SB 610, if the water supply
assessment finds that the supply is sufficient, then the
governing body of the water supplier (District) must approve the
water supply assessment and deliver it to the lead agency (City
4
of San Diego) within 90 days. The City of San Diego’s
notification on January 7, 2013 requested the WSA for the Otay
Plaza Project. The deadline for the District to provide a Board
approved WSA to the City of San Diego is April 6, 2013. An
extension can be requested to provide 30 additional days, if
necessary.
Pursuant to SB 610, if the water supply assessment finds overall
supplies are insufficient, the water supplier shall provide to
the lead agency “its plans for acquiring additional water
supplies, setting forth measures that are being undertaken to
acquire and develop those water supplies,” and the water
supplier governing body must approve the assessment and deliver
it to the lead agency within 90 days. If the water supplier
does conclude that additional water supplies are required, the
water supplier should indicate the status or stage of
development of the actions identified in the plans it provides.
Identification of a potential future action in such plans does
not by itself indicate that a decision to approve or to proceed
with the action has been made.
Once either of the two actions listed above are accomplished,
the District’s SB 610 water supply assessment responsibilities
are complete.
Water supply agencies throughout California continue to face
climatological, environmental, legal, and other challenges that
impact water source supply conditions, such as the court ruling
regarding the Sacramento-San Joaquin Delta issues. Challenges
such as these are always present. The regional water supply
agencies, the Water Authority, MWD, and the District
nevertheless fully intend to have sufficient, reliable supplies
to serve the Otay Plaza Project.
FISCAL IMPACT: Joe Beachem, Chief Financial Officer
The District has been reimbursed $8,000 for all costs associated
with the preparation of the Otay Plaza Project WSA Report. The
reimbursement was accomplished via a $8,000 deposit the Project
proponents placed with the District on January 7, 2013.
STRATEGIC GOAL:
The preparation and approval of the Otay Plaza Project WSA
Report supports the District’s Mission statement, "To provide
the best quality of water and wastewater services to the
customers of the Otay Water District, in a professional,
5
effective, and efficient manner” and the District’s Strategic
Goal, in planning for infrastructure and supply to meet current
and future potable water demands.
LEGAL IMPACT:
Approval of a WSA Report for the Otay Plaza Project in form and
content satisfactory to the Board of Directors would allow the
District to comply with the requirements of Senate Bill 610.
BK/RR:jf
P:\WORKING\WO D0362-Sunroad Otay Plaza\Staff Report\BD 03-06-13, Staff Report, Sunroad Otay Plaza WSA , (BK-RR).doc
Attachments: Attachment A – Committee Action
Exhibit A – Project Location Map
Exhibit B – Explanation of the Intent of SB 610
Exhibit C – Otay Plaza Project WSA Report
Exhibit D – Presentation
ATTACHMENT A
SUBJECT/PROJECT:
D0362-090131
Approval of Water Supply Assessment Report (January 2013)
for the Otay Plaza Project
COMMITTEE ACTION:
The Engineering, Operations, and Water Resources Committee
(Committee) reviewed this item at a meeting held on February 21,
2013. The Committee supported Staff’s recommendation.
NOTE:
The “Committee Action” is written in anticipation of the
Committee moving the item forward for Board approval. This
report will be sent to the Board as a Committee approved item,
or modified to reflect any discussion or changes as directed
from the Committee prior to presentation to the full Board.
EXHIBIT B
Background Information
The Otay Water District (District) prepared the January 2013 Water Supply Assessment
Report (WSA Report) for the Otay Plaza Project development at the request of the City
of San Diego. The City of San Diego’s WSA request on January 7, 2013 was received
by the District on January 7, 2013 so the 90-day deadline for the District to provide the
Board an approved WSA Report to the County ends April 6, 2013. Sunroad Otay
Partners, LP submitted an entitlement application to the County for the development of
the 51.9 acre project.
The Otay Plaza Project is located within the jurisdictions of the District, the San Diego
County Water Authority (Water Authority), and the Metropolitan Water District of
Southern California (MWD). See Exhibit A for Project location. To obtain permanent
imported water supply service, land areas are required to be within the jurisdictions of
the District, Water Authority, and MWD.
The January 2013 WSA Report for the Otay Plaza Project has been prepared by the
District in consultation with Dexter Wilson Engineering, Inc., the Water Authority, and
the County pursuant to Public Resources Code Section 21151.9 and California Water
Code Sections 10631, 10656, 10910, 10911, 10912, and 10915 referred to as Senate
Bill (SB) 610. SB 610 amended state law, effective January 1, 2002, intending to
improve the link between information on water supply availability and certain land use
decisions made by cities, counties, and other regulatory agencies. SB 610 requires that
the water purveyor of the public water system prepare a water supply assessment to be
included in the California Environmental Quality Act (CEQA) environmental
documentation and approval process of certain proposed projects. The requirements of
SB 610 are addressed in the January 2013 WSA Report for the Otay Plaza Project.
The Otay Plaza Project is located south of Otay Mesa Road, west of the State Route
125 southbound off-ramp terminus at Otay Mesa Road; east of the existing Avenida
Costa Azul unimproved, dedicated public Right of Way and north of State Route 905.
Refer to Exhibit A for a vicinity map of the proposed Otay Plaza Project. The project is
proposed to be located on 51.9 acres in the Otay Mesa Community Planning Area
within the City of San Diego. The Otay Plaza Project is planned to include 20
Industrial/Commercial business park lots.
The expected potable water demand for the Otay Plaza Project is 90,939 gallons per
day (gpd) or about 101.9 acre feet per year (AFY). The rezone of the property to
Commercial-Regional is expected to increase the water demand for this project above
what was projected in the District’s Water Resources Master Plan updated November
2010 (WRMP Update) which estimated 53 AFY for the same parcels, but with a lower
industrial use for the property. The projected recycled water demand for the Otay Plaza
Project is approximately 10,581 gpd or 11.9 AFY, representing about 10% of the total
Otay Plaza Project water demand.
The District currently depends on the Water Authority and the MWD for all of its potable
water supplies and regional water resource planning.
The District’s 2010 Urban Water Management Plan (UWMP) relies heavily on the
UWMP’s and Integrated Water Resources Plans (IRPs) of the Water Authority and
MWD for documentation of supplies available to meet projected demands. These plans
are developed to manage the uncertainties and variability of multiple supply sources
and demands over the long-term through preferred water resources strategy adoption
and resource development target approvals for implementation.
MWD in October 2010 approved the update of their Integrated Water Resources Plan
(IRP). The 2010 IRP Update describes an adaptive management approach to mitigate
against future water supply uncertainty. The new uncertainties that are significantly
affecting California’s water resources include:
The Federal Court ruling on previous operational limits on Sacramento-San
Joaquin Delta to protect the Delta species. Water agencies are still trying to
determine what effect the ruling will have on State Water Project (SWP)
deliveries. Actual supply curtailments for MWD are contingent upon fish
distribution, behavioral patterns, weather, Delta flow conditions, and how water
supply reductions are divided between state and federal projects.
Periodic extended drought conditions.
These uncertainties have rightly caused concern among Southern California water
supply agencies regarding the validity of the current water supply documentation.
MWD is currently involved in several proceedings concerning Delta operations to
evaluate and address environmental concerns. In addition, at the State level, the Delta
Vision and Bay-Delta Conservation Plan processes are defining long-term solutions for
the Delta.
The SWP represents approximately 9% of MWD’s 2025 Dry Resources Mix with the
supply buffer included. A 22% cutback in SWP supply represents an overall 2% (22%
of 9% is 2%) cutback in MWD supplies in 2025. Neither the Water Authority nor MWD
has stated that there is insufficient water for future planning in Southern California.
Each agency is in the process of reassessing and reallocating their water resources.
Under preferential rights, MWD can allocate water without regard to historic water
purchases or dependence on MWD. Therefore, the Water Authority and its member
agencies are taking measures to reduce dependence on MWD through development of
additional supplies and a water supply portfolio that would not be jeopardized by a
preferential rights allocation.
As calculated by MWD (December 11, 2012), the Water Authority’s current preferential
right is 17.22% of MWD’s supply, while the Water Authority accounted for approximately
25% of MWD’s total revenue. So MWD could theoretically cut back the Water
Authority’s supply and theoretically, the Water Authority should have alternative water
supply sources to make up for the difference. In the Water Authority’s 2010 UWMP,
they had already planned to reduce reliance on MWD supplies. This reduction is
planned to be achieved through diversification of their water supply portfolio.
The Water Authority’s Drought Management Plan (May 2006) provides the Water
Authority and its member agencies with a series of potential actions to engage when
faced with a shortage of imported water supplies due to prolonged drought conditions.
Such actions help avoid or minimize impacts of shortages and ensure an equitable
allocation of supplies throughout the San Diego County region.
The Otay Water District Board of Directors could acknowledge the ever-present
challenge of balancing water supply with demand and the inherent need to possess a
flexible and adaptable water supply implementation strategy that can be relied upon
during normal and dry weather conditions. The responsible regional water supply
agencies have and will continue to adapt their resource plans and strategies to meet
climatological, environmental, and legal challenges so that they may continue to provide
water supplies to their service areas. The regional water suppliers (i.e., the Water
Authority and MWD), along with the District, fully intend to maintain sufficient reliable
supplies through the 20-year planning horizon under normal, single, and multiple dry
year conditions to meet projected demand of the Otay Plaza Project, along with existing
and other planned development projects within the District’s service area.
If the regional water suppliers determine additional water supplies will be required, or in
this case, that water supply portfolios need to be reassessed and redistributed with the
intent to serve the existing and future water needs throughout Southern California, the
agencies must indicate the status or stage of development of actions identified in the
plans they provide. MWD’s 2010 IRP update will then cause the Water Authority to
update its IRP, which will then provide the District with the necessary water supply
documentation. Identification of a potential future action in such plans does not by itself
indicate that a decision to approve or to proceed with the action has been made. The
District’s Board approval of the Otay Plaza Project WSA Report does not in any way
guarantee water supply to the Otay Plaza Project.
Alternatively, if the WSA Report is written to state that water supply is or will be
unavailable; the District must include, in the assessment, a plan to acquire additional
water supplies. At this time, the District should not state there is insufficient water
supply.
So the best the District can do right now is to state the current water supply situation
clearly, indicating intent to provide supply through reassessment and reallocation by the
regional, as well as, the local water suppliers. In doing so, it is believed that the Board
has met the intent of the SB 610 statute, that the land use agencies and the water
agencies are coordinating their efforts in planning water supplies for new development.
With District Board approval of the Otay Plaza Project WSA Report, the Project
proponents can proceed with the draft environmental documentation required for the
CEQA review process. The water supply issues will be addressed in these
environmental documents, consistent with the WSA Report.
The District, as well as others, can comment on the draft EIR with recommendations
that water conservation measures and actions be employed on the Otay Plaza Project.
Some recent actions regarding water supply assessments and verification reports by
Otay Water District are as follows:
The Otay Water District Board approved in July 2007 the Eastern Urban Center
Water Supply and Assessment Report.
The Board approved the Judd Company Otay Crossings Commerce Park water
supply assessment report on December 5, 2007.
The Board approved the Otay Ranch L.P. Otay Ranch Preserve and Resort
Project Water Supply Assessment and Verification Report on February 4, 2009.
The Board approved water supply assessment and verification reports for the
City of Chula Vista Village 8 West Sectional Plan Area and Village 9 Sectional
Plan Are on January 5, 2011.
The Board approved the water supply assessment report for the San Diego-
Tijuana Cross Border Facility on February 2, 2011.
The Board approved the water supply assessment for the County of San Diego
Rabago Technology Park on April 6, 2011.
The Board approved the water supply assessment report for the Pio Pico Energy
Center Project on October 5, 2011.
The Board approved the water supply assessment report for the Hawano Project
on March 7, 2012.
Water supplies necessary to serve the demands of the proposed Otay Plaza Project,
along with existing and other projected future users, as well as the actions necessary to
develop these supplies, have been identified in the water supply planning documents of
the District, the Water Authority, and MWD.
The WSA Report includes, among other information, an identification of existing water
supply entitlements, water rights, water service contracts, or agreements relevant to the
identified water supply needs for the proposed Otay Plaza Project. The WSA Report
demonstrates and documents that sufficient water supplies are planned and are
intended to be available over a 20-year planning horizon, under normal conditions and
in single and multiple dry years, to meet the projected demand of the proposed Otay
Plaza Project and the existing and other planned development projects within the
District.
Accordingly, after approval of a WSA Report for the Otay Plaza Project by the District's
Board of Directors, the WSA Report may be used to comply with the requirements of
the legislation enacted by Senate Bills 610 as follows:
Senate Bill (SB) 610 Water Supply Assessment: The District's Board of Directors
approved WSA Report may be incorporated into the California Environmental
Quality Act (CEQA) compliance process for the Otay Plaza Project as a water supply
assessment report consistent with the requirements of the legislation enacted by SB
610. The County of San Diego, as lead agency under the CEQA for the Otay Plaza
Project environmental documentation, may cite the approved WSA Report as
evidence that a sufficient water supply is planned and intended to be available to
serve the Otay Plaza Project.
OTAY WATER DISTRICT
WATER SUPPLY ASSESSMENT REPORT
for the
Otay Plaza Project
D0362-090143
Prepared by:
Bob Kennedy, P.E.
Senior Civil Engineer
Otay Water District
In consultation with
Dexter Wilson Engineering, Inc.
And
San Diego County Water Authority
January 2013
Otay Water District
Water Supply Assessment Report
Otay Plaza Project
Otay Water District
Water Supply Assessment Report
January 2013
Otay Plaza Project
Table of Contents
Executive Summary .................................................................................................................................... 1
Section 1 - Purpose ...................................................................................................................................... 6
Section 2 - Findings ..................................................................................................................................... 7
Section 3 - Project Description ................................................................................................................ 10
Section 4 – Otay Water District ............................................................................................................... 10
Section 5 – Historical and Projected Water Demands .......................................................................... 13
5.1 Demand Management (Water Conservation) ............................................. 18
Section 6 - Existing and Projected Supplies ........................................................................................... 21
6.1 Metropolitan Water District of Southern California 2010
Regional Urban Water Management Plan .................................................. 21
6.1.2 MWD Capital Investment Plan ....................................... 23
6.2 San Diego County Water Authority Regional Water Supplies ................. 23
6.2.1 Availability of Sufficient Supplies and Plans for
Acquiring Additional Supplies ........................................................ 24
6.2.1.2 All-American Canal and Coachella Canal
Lining Projects ................................................................ 31
6.2.1.3 Carlsbad Seawater Desalination Project ......................... 35
6.2.2 Water Authority Capital Improvement
Program and Financial Information ................................ 40
6.3 Otay Water District ....................................................................................... 41
6.3.1 Availability of Sufficient Supplies and Plans for
Acquiring Additional Supplies ........................................................ 42
6.3.1.1 Imported and Regional Supplies ..................................... 43
6.3.1.2 Recycled Water Supplies ................................................ 45
Section 7 – Conclusion: Availability of Sufficient Supplies .................................................................. 53
Source Documents ..................................................................................................................................... 58
Appendices
Appendix A: Otay Plaza Project Vicinity Map
Appendix B: Otay Plaza Project Development Plan
Otay Water District
Water Supply Assessment Report
Otay Plaza Project
1
Otay Water District
Water Supply Assessment Report
January 2013
Otay Plaza Project
Executive Summary
The Otay Water District (OWD) prepared this Water Supply Assessment Report (WSA
Report) at the request of the City of San Diego (City) for the Otay Plaza Project. Sunroad
Otay Partners, LP submitted an entitlement application to the City of San Diego for the
development of the Otay Plaza Project.
Otay Plaza Project Overview and Water Use
The Otay Plaza Project is located within the jurisdictions of the OWD, the San Diego County
Water Authority (Water Authority), and the Metropolitan Water District of Southern
California (MWD). To obtain permanent imported water supply service, land areas are
required to be within the jurisdictions of the OWD, Water Authority, and MWD.
The project applicant, Sunroad Otay Partners, LP, has made application to the City of San
Diego for a Community Plan Amendment, re-zone, Site Development Permit (No. 945297),
Right-of-Way Vacation (No. 945299), a 20 commercial lot Vesting Tentative Map (No.
945298), Neighborhood Development Permit and a Planned Development Permit to construct
a regional commercial retail center on a 51.9 acre site located in the Otay Mesa Community
Planning Area within the City of San Diego. The breakdown of the project comprises 49.1
acres of land lying north of SR-905 together with a 2.8 acre parcel lying south of SR-905
which may be used for storm water detention purposes.
The proposed site is located south of Otay Mesa Road, west of the State Route 125
southbound off-ramp terminus at Otay Mesa Road; east of the existing Avenida Costa Azul
unimproved, dedicated public Right of Way and north of State Route 905. The site is
currently vacant with flat topography. Surrounding land uses include SR-905 freeway to the
south; the vacant SR-125/SR-905 future interchange to the east; mixed light industrial and
commercial uses to the north; and a vacant commercially zoned property to the west. The site
is zoned Otay Mesa Development District (Industrial Subdistrict) (OMDD-I) and designated
Industrial on the City of San Diego Otay Mesa Community Plan. The location map in
Otay Water District
Water Supply Assessment Report
Otay Plaza Project
2
Appendix A depicts the location of the proposed site within the Otay Mesa area. The
proposed lot layout of the project is shown in Appendix B.
The proposed project would involve a re-zone of the property to CR-2-1 (Commercial-
Regional) with construction of eleven buildings consisting of 500,590 square feet of gross
leasable retail area and a 134-key room hotel of 72,250 square feet, approximately 2,420
parking spaces and all grading, drainage, utility and access improvements.
The shopping center could also include a gas-station with car wash and several dining/coffee
providers some of which will have drive-thru service. The project would be anchored by four
buildings along the southern boundary of the site; eight outparcel building pads would be
located along the northern site boundary adjacent to and south of Otay Mesa Road. Specific
tenants have yet to be identified but the scope of on and off-site improvements required has
been developed to accommodate a specific square footage of retail, hotel and restaurant uses.
The expected potable water demand for the Otay Plaza Project is 90,939 gallons per day (gpd)
or about 101.9 acre feet per year (AFY). The rezone of the property to Commercial-Regional
is expected to increase the water demand for this project above what was projected in the
District’s Water Resources Master Plan updated November 2010 (WRMP Update) which
estimated 53 AFY for the same parcels, but with a lower industrial use for the property. The
projected recycled water demand for the Otay Plaza Project is 10,581 gpd or 11.9 AFY,
representing about 10% of the total Otay Plaza Project water demand.
The Otay Plaza Project development components are required to use recycled water for
irrigation and other potential purposes. The primary benefit of using recycled water is that it
will offset the potable water demand by an estimated 11.9 AFY. The Otay WD WRMP
Update and 2010 Urban Water Management Plan (UWMP) anticipated that the Otay Plaza
Project would use both potable and recycled water.
Planned Imported Water Supplies from the Water Authority and MWD
The Water Authority and MWD have an established process that ensures supplies are being
planned to meet future growth. Any annexations and revisions to established land use plans
are captured in the San Diego Association of Governments (SANDAG) updated forecasts for
land use planning, demographics, and economic projections. SANDAG serves as the
regional, intergovernmental planning agency that develops and provides forecast information.
The Water Authority and MWD update their demand forecasts and supply needs based on the
most recent SANDAG forecast approximately every five years to coincide with preparation of
their Urban Water Management Plans (UWMP). Prior to the next forecast update, local
jurisdictions with land use authority may require water supply assessment and/or verification
reports for proposed land developments that are not within the OWD, Water Authority, or
MWD jurisdictions (i.e. pending or proposed annexations) or that have revised land use plans
with either lower or higher development intensities than reflected in the existing growth
Otay Water District
Water Supply Assessment Report
Otay Plaza Project
3
forecasts. Proposed land areas with pending or proposed annexations, or revised land use
plans, typically result in creating higher demand and supply requirements than previously
anticipated. The OWD, Water Authority, and MWD next demand forecast and supply
requirements and associated planning documents would then capture any increase or decrease
in demands and required supplies as a result of annexations or revised land use planning
decisions.
The California Urban Water Management Planning Act (Act), which is included in the
California Water Code, requires all urban water suppliers within the state to prepare an
UWMP and update it every five years. The purpose and importance of the UWMP has
evolved since it was first required 25 years ago. State agencies and the public frequently use
the document to determine if agencies are planning adequately to reliably meet future
demands. As such, UWMPs serve as an important element in documenting supply
availability for the purpose of compliance with state laws, Senate Bill 610, linking water
supply sufficiency to large land-use development approval. Agencies must also have a
UWMP prepared, pursuant to the Act, in order to be eligible for state funding and drought
assistance.
MWD’s 2010 IRP long term water plan offers a strategy to protect the region from future
supply shortages, with an emphasis on water-use efficiency through conservation and local
supply development. The 2010 IRP includes a planning buffer supply intended to mitigate
against the risks associated with implementation of local and imported supply programs and
for the risk that future demands could be higher than projected. The planning buffer identifies
an additional increment of water that could potentially be developed when needed or if other
supplies are not fully implemented as planned. As part of implementation of the planning
buffer, MWD periodically evaluates supply development, supply conditions, and projected
demands to ensure that the region is not under or over developing supplies. Managed
properly, the planning buffer will help ensure that the southern California region, including
San Diego County, will have adequate water supplies to meet long-term future demands.
Water supply agencies throughout California continue to face climate, environmental, legal,
and other challenges that impact water source supply conditions, such as the court rulings
regarding the Sacramento-San Joaquin Delta issues and the current ongoing drought
impacting the western states. Challenges such as these essentially always will be present.
The regional water supply agencies, the Water Authority and MWD, along with OWD
nevertheless fully intend to have sufficient, reliable supplies to serve demands.
In Section ES-5 of their 2010 Regional Urban Water Management Plan (2010 RUWMP),
MWD states that MWD has supply capacities that would be sufficient to meet expected
demands from 2015 through 2035. MWD has plans for supply implementation and continued
development of a diversified resource mix including programs in the Colorado River
Aqueduct, State Water Project, Central Valley Transfers, local resource projects, and in-
region storage that enables the region to meet its water supply needs. MWD’s 2010 RUWMP
identifies potential reserve supplies in the supply capability analysis (Tables 2-9, 2-10, and 2-
Otay Water District
Water Supply Assessment Report
Otay Plaza Project
4
11), which could be available to meet the unanticipated demands such as those related to the
Otay Plaza Project.
The County Water Authority Act, Section 5 subdivision 11, states that the Water Authority
“as far as practicable, shall provide each of its member agencies with adequate supplies of
water to meet their expanding and increasing needs.”
As part of preparation of a written water supply assessment report, an agency’s shortage
contingency analysis should be considered in determining sufficiency of supply. Section 11
of the Water Authority’s 2010 UWMP contains a detailed shortage contingency analysis that
addresses a regional catastrophic shortage situation and drought management. The analysis
demonstrates that the Water Authority and its member agencies, through the Emergency
Response Plan, Emergency Storage Project, and Drought Management Plan (DMP) are taking
actions to prepare for and appropriately handle an interruption of water supplies. The DMP,
adopted in May 2006, provides the Water Authority and its member agencies with a series of
potential actions to take when faced with a shortage of imported water supplies from MWD
due to prolonged drought or other supply shortfall conditions. The actions will help the
region avoid or minimize the impacts of shortages and ensure an equitable allocation of
supplies.
Otay Water District Water Supply Development Program
In evaluating the availability of sufficient water supply, the Otay Plaza Project will be
required to participate in the water supply development program being implemented by the
OWD. This is intended to be achieved through financial participation in several local and/or
regional water supply development projects envisioned by the OWD. These water supply
projects are in addition to those identified as sustainable supplies in the current Water
Authority and MWD UWMP, IRP, Master Plans, and other planning documents. These new
water supply projects are in response to the regional water supply issues. These new
additional water supply projects are not currently developed and are in various stages of the
planning process. Imported water supplies along with the OWD water supply development
projects supplies are planned to be developed and are intended to increase water supplies to
serve the Otay Plaza Project water supply needs and that of other similar situated
development projects. The OWD water supply development program includes but is not
limited to projects such as the Middle Sweetwater River Basin Groundwater Well project, the
North District Recycled Water Supply Concept, the Rosarito Ocean Desalination Facility
project, and the Rancho del Rey Groundwater Well project. The Water Authority and
MWD’s next forecasts and supply planning documents would capture any increase in water
supplies resulting from any new water resources developed by the OWD.
Otay Water District
Water Supply Assessment Report
Otay Plaza Project
5
Findings
This WSA Report for the Otay Plaza Project has been prepared by the OWD in consultation
with Dexter Wilson Engineering, Inc., the Water Authority, and the City of San Diego
pursuant to Public Resources Code Section 21151.9 and California Water Code Sections
10631, 10656, 10657, 10910, 10911, 10912, and 10915 referred to as Senate Bill (SB) 610.
SB 610 amended state law, effective January 1, 2002, to improve the link between
information on water supply availability and certain land use decisions made by cities and
counties. SB 610 requires that the water purveyor of the public water system prepare a water
supply assessment to be included in the California Environmental Quality Act (CEQA)
environmental documentation and approval process of certain proposed projects. The County
requested that OWD prepare a water supply assessment as per the requirements of SB 610.
The requirements of SB 610 are being addressed by this WSA Report
The Otay Plaza Project development concept exceeds the thresholds contained in the
legislation enacted by SB 610 and therefore requires preparation of a WSA report. The Otay
Plaza Project is considered as a commercial/industrial development and is not a residential
subdivision project of more than 500 units and hence it is not subject to the requirements of
Senate Bill 221 for preparation of a Water Supply Verification Report.
The WSA Report identifies and describes the processes by which water demand projections
for the proposed Otay Plaza Project will be fully included in the water demand and supply
forecasts of the Urban Water Management Plans and other water resources planning
documents of the Water Authority and MWD. Water supplies necessary to serve the demands
of the proposed Otay Plaza Project, along with existing and other projected future users, as
well as the actions necessary and status to develop these supplies, have been identified in the
Otay Plaza Project WSA Report and will be included in the future water supply planning
documents of the Water Authority and MWD.
This WSA Report includes, among other information, an identification of existing water
supply entitlements, water rights, water service contracts, water supply projects, or
agreements relevant to the identified water supply needs for the proposed Otay Plaza Project.
This WSA Report demonstrates, and documents that sufficient water supplies are planned for
and are intended to be available over a 20-year planning horizon, under normal conditions and
in single and multiple dry years to meet the projected demand of the proposed Otay Plaza
Project and the existing and other planned development projects to be served by the OWD.
Accordingly, after approval of a WSA Report for the Otay Plaza Project by the Otay Water
District Board of Directors (Board), the WSA Report may be used to comply with the
requirements of the legislation enacted by Senate Bill 610 as follows:
Senate Bill 610 Water Supply Assessment: The Otay Water District Board approved
Otay Plaza Project WSA Report may be incorporated into the California
Environmental Quality Act (CEQA) compliance process for the Otay Plaza Project as
Otay Water District
Water Supply Assessment Report
Otay Plaza Project
6
a water supply assessment report consistent with the requirements of the legislation
enacted by SB 610. The City, as lead agency under CEQA for the Otay Plaza Project
EIR, may cite the approved WSA Report as evidence that a sufficient water supply is
planned for and is intended to be made available to serve the Otay Plaza Project.
Section 1 - Purpose
The project applicant, Sunroad Otay Partners, LP, has made application to the City of San
Diego for a Community Plan Amendment, re-zone, Site Development Permit (No. 945297),
Right-of-Way Vacation (No. 945299), a 20 commercial lot Vesting Tentative Map (No.
945298), Neighborhood Development Permit and a Planned Development Permit to construct
a regional commercial retail center on a 51.9 acre site located in the Otay Mesa Community
Planning Area within the City of San Diego. The breakdown of the project comprises 49.1
acres of land lying north of SR-905 together with a 2.8 acre parcel lying south of SR-905
which may be used for storm water detention purposes.
The proposed site is located south of Otay Mesa Road, west of the State Route 125
southbound off-ramp terminus at Otay Mesa Road; east of the existing Avenida Costa Azul
unimproved, dedicated public Right of Way and north of State Route 905. The site is
currently vacant with flat topography. Surrounding land uses include SR-905 freeway to the
south; the vacant SR-125/SR-905 future interchange to the east; mixed light industrial and
commercial uses to the north; and a vacant commercially zoned property to the west. The site
is zoned Otay Mesa Development District (Industrial Subdistrict) (OMDD-I) and designated
Industrial on the City of San Diego Otay Mesa Community Plan. The location map in
Appendix A depicts the location of the proposed site within the Otay Mesa area. The
proposed lot layout of the project is shown in Appendix B.
The proposed project would involve a re-zone of the property to CR-2-1 (Commercial-
Regional) with construction of eleven buildings consisting of 500,590 square feet of gross
leasable retail area and a 134-key room hotel of 72,250 square feet, approximately 2,420
parking spaces and all grading, drainage, utility and access improvements.
The shopping center could also include a gas-station with car wash and several dining/coffee
providers some of which will have drive-thru service. The project would be anchored by four
buildings along the southern boundary of the site; eight outparcel building pads would be
located along the northern site boundary adjacent to and south of Otay Mesa Road. Specific
tenants have yet to be identified but the scope of on and off-site improvements required has
been developed to accommodate a specific square footage of retail, hotel and restaurant uses.
The City requested that the Otay Water District (OWD) prepare a Water Supply Assessment
(WSA) Report for the Otay Plaza Project. The Otay Plaza Project description is provided in
Section 3 of this WSA Report.
Otay Water District
Water Supply Assessment Report
Otay Plaza Project
7
This WSA Report for the Otay Plaza Project has been prepared by the OWD in consultation
with Dexter Wilson Engineering, Inc., the San Diego County Water Authority (Water
Authority), and the City of San Diego pursuant to Public Resources Code Section 21151.9
and California Water Code Sections 10631, 10656, 10910, 10911, 10912, and 10915 referred
to as Senate Bill (SB) 610. SB 610 amended state law, effective January 1, 2002, intending to
improve the link between information on water supply availability and certain land use
decisions made by cities and counties. SB 610 requires that the water purveyor of the public
water system prepare a water supply assessment to be included in the California
Environmental Quality Act (CEQA) environmental documentation and approval process of
certain proposed projects. The requirements of SB 610 are being addressed by this WSA
Report.
The Otay Plaza Project’s development concept exceeds the thresholds contained in the
legislation enacted by SB 610 and therefore requires preparation of a WSA report. The Otay
Plaza Project is considered as an industrial development and is not a residential subdivision
project of more than 500 units and hence it is not subject to the requirements of Senate Bill
221 for preparation of a Water Supply Verification Report.
This WSA Report evaluates water supplies that are planned to be available during normal,
single dry year, and multiple dry water years during a 20-year planning horizon to meet
existing demands, expected demands of the Otay Plaza Project, and reasonably foreseeable
planned future water demands to be served by OWD. The Otay Water District Board of
Directors approved WSA Report is planned to be used by the City in its evaluation of the
Otay Plaza Project under the CEQA approval process procedures.
Section 2 - Findings
Sunroad Otay Partners, LP submitted an entitlement application to the City of San Diego for
the development of the 51.9 acre parcel (Otay Plaza Project). The OWD prepared this WSA
Report at the request of the City of San Diego for the Otay Plaza Project.
The Otay Plaza Project is located within the jurisdictions of the OWD, the Water Authority,
and the Metropolitan Water District of Southern California (MWD). To obtain permanent
imported water supply service, land areas are required to be within the jurisdictions of the
OWD, Water Authority, and MWD to utilize imported water supply.
The expected potable water demand for the Otay Plaza Project is 90,939 gallons per day (gpd)
or about 101.9 acre feet per year (AFY). The rezone of the property to Commercial-Regional
is expected to increase the water demand for this project above what was projected in the
District’s Water Resources Master Plan updated November 2010 (WRMP Update) which
estimated 53 AFY for the same parcels, but with a lower industrial use for the property. The
Otay Water District
Water Supply Assessment Report
Otay Plaza Project
8
projected recycled water demand for the Otay Plaza Project is 10,581 gpd or 11.9 AFY,
representing about 10% of the total Otay Plaza Project water demand.
The Otay Plaza Project development proponents are required to use recycled water for
irrigation and other appropriate uses. The primary benefit of using recycled water is that it
will offset the potable water demands by an estimated 11.9 AFY. The WRMP Update and the
2010 Urban Water Management Plan (UWMP) anticipated that the land area to be utilized for
the Otay Plaza Project would use both potable and recycled water.
In evaluating the availability of sufficient water supply, the Otay Plaza project proponents are
required to participate in the development of alternative water supply project(s). This can be
achieved through payment of the New Water Supply Fee adopted by the Otay Water District
Board in May 2010. These water supply projects are in addition to those identified as
sustainable supplies in the current Water Authority and MWD UWMP, IRP, Master Plans,
and other planning documents. These new water supply projects are in response to the
regional water supply issues related to the Sacramento-San Joaquin Delta and the current
ongoing western states drought conditions. These new additional water supply projects are
not currently developed and are in various stages of the planning process. A few examples of
these alternative water supply projects include the Middle Sweetwater River Basin
Groundwater Well project, the OWD Desalination project, and the Rancho del Rey
Groundwater Well project. The Water Authority and MWD next forecast and supply
planning documents would capture any increase in water supplies resulting from verifiable
new water resources developed by the OWD.
The Water Authority and MWD have an established process that ensures supplies are being
planned to meet future growth. Any annexations and revisions to established land use plans
are captured in the San Diego Association of Governments (SANDAG) updated forecasts for
land use planning, demographics, and economic projections. SANDAG serves as the
regional, intergovernmental planning agency that develops and provides forecast information.
The Water Authority and MWD update their demand forecasts and supply needs based on the
most recent SANDAG forecast approximately every five years to coincide with preparation of
their urban water management plans. Prior to the next forecast update, local jurisdictions may
require water supply assessment and/or verification reports for proposed land developments
that are not within the OWD, Water Authority, or MWD jurisdictions (i.e. pending or
proposed annexations) or that have revised land use plans with lower or higher land use
intensities than reflected in the existing growth forecasts. Proposed land areas with pending
or proposed annexations, or revised land use plans, typically result in creating higher demand
and supply requirements than anticipated. The OWD, the Water Authority, and MWD next
demand forecast and supply requirements and associated planning documents would then
capture any increase or decrease in demands and required supplies as a result of annexations
or revised land use planning decisions.
This process is utilized by the Water Authority and MWD to document the water supplies
necessary to serve the demands of any proposed development project, along with existing and
Otay Water District
Water Supply Assessment Report
Otay Plaza Project
9
other projected future users, as well as the actions necessary to develop any required water
supplies. Through this process the necessary demand and supply information is thus assured
to be identified and incorporated within the water supply planning documents of the Water
Authority and MWD.
This WSA Report includes, among other information, an identification of existing water
supply entitlements, water rights, water service contracts, proposed water supply projects, and
agreements relevant to the identified water supply needs for the proposed Otay Plaza Project.
This WSA Report incorporates by reference the current Urban Water Management Plans and
other water resources planning documents of the OWD, the Water Authority, and MWD. The
OWD prepared this WSA Report to assess and document that sufficient water supplies are
planned for and are intended to be acquired to meet projected water demands of the Otay
Plaza Project as well as existing and other reasonably foreseeable planned development
projects within the OWD for a 20-year planning horizon, in normal supply years and in single
dry and multiple dry years.
The Otay Water District 2010 UWMP included a water conservation component to comply
with Senate Bill 7 of the Seventh Extraordinary Session (SBX 7-7), which became effective
February 3, 2010. This new law was the water conservation component to the Delta
legislation package, and seeks to achieve a 20 percent statewide reduction in urban per capita
water use in California by December 31, 2020. Specifically, SBX 7-7 from this Extraordinary
Session requires each urban retail water supplier to develop urban water use targets to help
meet the 20 percent reduction goal by 2020 (20x2020), and an interim water reduction target
by 2015.
OWD has adopted Method 1 to set its 2015 interim and 2020 water use targets. Method 1
requires setting the 2020 water use target to 80 percent of baseline per capita water use target
as provided in the State’s Draft 20x2020 Water Conservation Plan. The OWD 2015 target is
171 gpcd and the 2020 gpcd target at 80 percent of baseline is 152 gpcd.
The OWD’s recent per capita water use has been declining to the point where current water
use already meets the 2020 target for Method 1. This recent decline in per capita water use is
largely due to drought water use restrictions, increased water costs, and economic conditions.
However, OWD’s effective water use awareness campaign and enhanced conservation
mentality of its customers will likely result in some long-term carryover of these reduced
consumption rates.
Based on a normal water supply year, the five-year increments for a 20-year projection
indicate projected potable and recycled water supply is being planned for and is intended to be
acquired to meet the estimated water demand targets of the OWD (44,883 acre-feet (ac-ft) in
2015 to 56,614 ac-ft in 2035 per the Otay Water District 2010 UWMP). Based on dry year
forecasts, the estimated water supply is also being planned for and is intended to be acquired
to meet the projected water demand, during single dry and multiple dry year scenarios. On
average, the dry-year demands are about 6.4 percent higher than the normal year demands.
Otay Water District
Water Supply Assessment Report
Otay Plaza Project
10
The OWD recycled water supply is assumed to be drought-proof and not subject to reduction
during dry periods.
Together, these findings assess, demonstrate, and document that sufficient water supplies are
planned for and are intended to be acquired, as well as the actions necessary and status to
develop these supplies are and will be further documented, to serve the proposed Otay Plaza
Project and the existing and other reasonably foreseeable planned development projects
within the OWD in both normal and single and multiple dry year forecasts for a 20-year
planning horizon.
Section 3 - Project Description
The Otay Plaza Project is located south of Otay Mesa Road, west of the State Route 125
southbound off-ramp terminus at Otay Mesa Road; east of the existing Avenida Costa Azul
unimproved, dedicated public Right of Way and north of State Route 905. The site is
currently vacant with flat topography. Surrounding land uses include SR-905 freeway to the
south; the vacant SR-125/SR-905 future interchange to the east; mixed light industrial and
commercial uses to the north; and a vacant commercially zoned property to the west. The site
is zoned Otay Mesa Development District (Industrial Subdistrict) (OMDD-I) and designated
Industrial on the City of San Diego Otay Mesa Community Plan. The location map in
Appendix A depicts the location of the proposed site within the Otay Mesa area. The
proposed lot layout of the project is shown in Appendix B.
The Otay Plaza Project is planned to include 20 Commercial business park lots ranging from
0.6 to 16.1 acres in size. . As each of these lots develops in the future, it would be subject to
the project approval and permitting processes of the City of San Diego and OWD.
The City of San Diego has discretionary authority on land use decisions for the Otay Plaza
Project and can establish actions and/or permit approval requirements. The projected potable
and recycled water demands associated with the Otay Plaza Project have considered the
anticipated City of San Diego discretionary actions and/or permit approvals and are
incorporated into and used in this WSA Report. The water demands for the proposed Otay
Plaza Project are included in the projected water demand estimates provided in Section 5 –
Historical and Projected Water Demands.
Section 4 – Otay Water District
The OWD is a municipal water district formed in 1956 pursuant to the Municipal Water
District Act of 1911 (Water Code §§ 71000 et seq.). The OWD joined the Water Authority as
a member agency in 1956 to acquire the right to purchase and distribute imported water
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throughout its service area. The Water Authority is an agency responsible for the wholesale
supply of water to its 24 public agency members in San Diego County.
The OWD currently meets all its potable demands with imported treated water from the Water
Authority. The Water Authority is the agency responsible for the supply of imported water
into San Diego County through its membership in MWD. The Water Authority currently
obtains about half of its imported supply from MWD, but is in the process of further
diversifying its available supplies.
The OWD provides water service to residential, commercial, industrial, and agricultural
customers, and for environmental and fire protection uses. In addition to providing water
throughout its service area, OWD also provides sewage collection and treatment services to a
portion of its service area known as the Jamacha Basin. The OWD also owns and operates
the Ralph W. Chapman Water Reclamation Facility (RWCWRF) which has an effective
treatment capacity of 1.2 million gallons per day (mgd) or about 1,300 acre feet per year to
produce recycled water. On May 18, 2007, an additional source of recycled water supply of
at least 6 mgd, or about 6,720 acre feet per year, became available to OWD from the City of
San Diego’s South Bay Water Reclamation Plant (SBWRP).
The OWD jurisdictional area is generally located within the south central portion of San
Diego County and includes approximately 125 square miles. The OWD serves portions of the
unincorporated communities of southern El Cajon, La Mesa, Rancho San Diego, Jamul,
Spring Valley, Bonita, and Otay Mesa, the eastern portion of the City of Chula Vista and a
portion of the City of San Diego on Otay Mesa. The OWD jurisdiction boundaries are
roughly bounded on the north by the Padre Dam Municipal Water District, on the northwest
by the Helix Water District, and on the west by the South Bay Irrigation District (Sweetwater
Authority) and the City of San Diego. The southern boundary of OWD is the international
border with Mexico.
The planning area addressed in the Otay Water District WRMP Update and the Otay Water
District 2010 UWMP includes both the land within the jurisdictional boundary of the OWD
and those areas outside of the present OWD boundaries considered to be in the Area of
Influence of the OWD. Figure 1 contained within the Otay Water District 2010 UWMP
shows the jurisdictional boundary of the OWD and the Area of Influence. The planning area
is approximately 143 square miles, of which approximately 125 square miles are within the
OWD current boundaries and approximately 18 square miles are in the Area of Influence.
The area east of OWD is rural and currently not within any water purveyor jurisdiction and
potentially could be served by the OWD in the future if the need for imported water becomes
necessary, as is the case for the Area of Influence.
The City of Chula Vista, the City of San Diego, and the County of San Diego are the three
land use planning agencies within the OWD jurisdiction. Data on forecasts for land use
planning, demographics, economic projections, population, and the future rate of growth
within OWD were obtained from the San Diego Association of Governments (SANDAG).
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SANDAG serves as the regional, intergovernmental planning agency that develops and
provides forecast information through the year 2050. Population growth within the OWD
service area is expected to increase from the 2010 figure of approximately 198,616 to an
estimated 284,997 by 2035. Land use information used to develop water demand projections
are based upon Specific or Sectional Planning Areas, the Otay Ranch General Development
Plan/Sub-regional Plan, East Otay Mesa Specific Plan Area, San Diego County Community
Plans, and City of San Diego Otay Mesa Community Plan, City of Chula Vista, and County
of San Diego General Plans.
The OWD long-term historic growth rate has been approximately 4 percent. The growth rate
has significantly slowed due to the current economic conditions and it is expected to slow as
the inventory of developable land is diminished.
Climatic conditions within the OWD service area are characteristically Mediterranean near
the coast, with mild temperatures year round. Inland areas are both hotter in summer and
cooler in winter, with summer temperatures often exceeding 90 degrees and winter
temperatures occasionally dipping to below freezing. Most of the region’s rainfall occurs
during the months of December through March. Average annual rainfall is approximately
12.17 inches per year.
Historic climate data were obtained from the Western Regional Climate Center for Station
042706 (El Cajon). This station was selected because its annual temperature variation is
representative of most of the OWD service area. While there is a station in the City of Chula
Vista, the temperature variation at the City of Chula Vista station is more typical of a coastal
environment than the conditions in most of the OWD service area.
Urban Water Management Plan
In accordance with the California Urban Water Management Planning Act and recent
legislation, the Otay Water District Board of Directors adopted an UWMP in June 2011 and
subsequently submitted the plan to the California Department of Water Resources (DWR).
The Otay Water District 2010 UWMP is currently being reviewed by DWR. As required by
law, the Otay Water District 2010 UWMP includes projected water supplies required to meet
future demands through 2035. In accordance with Water Code Section 10910 (c)(2) and
Government Code Section 66473.7 (c)(3), information from the Otay Water District 2010
UWMP along with supplemental information from the Otay Water District WRMP Update
have been utilized to prepare this WSA Report and are incorporated herein by reference.
The state Legislature passed Senate Bill 7 as part of the Seventh Extraordinary Session (SBX
7-7) on November 10, 2009, which became effective February 3, 2010. This new law was the
water conservation component to the Delta legislation package and seeks to achieve a 20
percent statewide reduction in urban per capita water use in California by December 31, 2020.
Specifically, SBX 7-7 from this Extraordinary Session requires each urban retail water
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supplier to develop urban water use targets to help meet the 20 percent reduction goal by 2020
(20x2020), and an interim water reduction target by 2015.
The SBX 7-7 target setting process includes the following: (1) baseline daily per capita water
use; (2) urban water use target; (3) interim water use target; (4) compliance daily per capita
water use, including technical bases and supporting data for those determinations. In order
for an agency to meet its 2020 water use target, each agency can increase its use of recycled
water to offset potable water use and also step up its water conservation measures. The
required water use targets for 2020 and an interim target for 2015 are determined using one of
four target methods – each method has numerous methodologies. The 2020 urban water use
target may be updated in a supplier’s 2015 UWMP.
In 2015, urban retail water suppliers will be required to report interim compliance followed by
actual compliance in 2020. Interim compliance is halfway between the baseline water use and
2020 target. Baseline, target, and compliance-year water use estimates are required to be
reported in gallons per capita per day (gpcd).
Failure to meet adopted targets will result in the ineligibility of a water supplier to receive
grants or loans administered by the State unless one (1) of two (2) exceptions is met.
Exception one (1) states a water supplier may be eligible if they have submitted a schedule,
financing plan, and budget to DWR for approval to achieve the per capita water use
reductions. Exception two (2) states a water supplier may be eligible if an entire water service
area qualifies as a disadvantaged community.
OWD has adopted Method 1 to set its 2015 interim and 2020 water use targets. Method 1
requires setting the 2020 water use target to 80 percent of baseline per capita water use target
as provided in the State’s Draft 20x2020 Water Conservation Plan. The OWD 2015 target is
171 gpcd and the 2020 gpcd target at 80 percent of baseline is 152 gpcd.
The OWD’s recent per capita water use has been declining to the point where current water
use already meets the 2020 target for Method 1. This recent decline in per capita water use is
largely due to drought water use restrictions, increased water costs, and poor economic
conditions. However, OWD’s effective water use awareness campaign and enhanced
conservation mentality of its customers will likely result in some long-term carryover of these
reduced consumption rates beyond the current drought period.
Section 5 – Historical and Projected Water Demands
The projected demands for OWD are based on Specific or Sectional Planning Areas, the Otay
Ranch General Development Plan/Sub-regional Plan, the East Otay Mesa Specific Plan Area,
San Diego County Community Plans, and City of San Diego Otay Mesa Community Plan,
City of Chula Vista, and County of San Diego General Plans. This land use information is
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also used by SANDAG as the basis for its most recent forecast data. This land use
information was utilized for the preparation of the Otay Water District WRMP Update and
Otay Water District 2010 UWMP to develop the forecasted demands and supply
requirements.
In 1994, the Water Authority selected the Institute for Water Resources-Municipal and
Industrial Needs (MAIN) computer model to forecast municipal and industrial water use for
the San Diego region. The MAIN model uses demographic and economic data to project
sector-level water demands (i.e. residential and non-residential demands). This econometric
model has over a quarter of a century of practical application and is used by many cities and
water agencies throughout the United States. The Water Authority’s version of the MAIN
model was modified to reflect the San Diego region’s unique parameters and is known as
CWA-MAIN.
The foundation of the water demand forecast is the underlying demographic and economic
projections. This was a primary reason why, in 1992, the Water Authority and SANDAG
entered into a Memorandum of Agreement (MOA) in which the Water Authority agreed to
use the SANDAG current regional growth forecast for water supply planning purposes. In
addition, the MOA recognizes that water supply reliability must be a component of San Diego
County’s regional growth management strategy required by Proposition C, as passed by the
San Diego County voters in 1988. The MOA ensures a strong linkage between local general
plan land use forecasts and water demand projections and resulting supply needs for the San
Diego region.
Consistent with the previous CWA-MAIN modeling efforts, on February 26, 2010, the
SANDAG Board of Directors accepted the Series 12: 2050 Regional Growth Forecast. The
2050 Regional Growth Forecast will be used by SANDAG as the foundation for the next
Regional Comprehensive Plan update. SANDAG forecasts were used by local governments
for planning, including the Water Authority 2010 UWMP.
The municipal and industrial forecast also included an updated accounting of projected
conservation savings based on projected regional implementation of the California Urban
Water Conservation Council (CUWCC) Best Management Practices and SANDAG
demographic information for the period 2010 through 2035. These savings estimates were
then factored into the baseline municipal and industrial demand forecast.
A separate agricultural model, also used in prior modeling efforts, was used to forecast
agricultural water demands within the Water Authority service area. This model estimates
agricultural demand to be met by the Water Authority’s member agencies based on
agricultural acreage projections provided by SANDAG, crop distribution data derived from
the Department of Water Resources and the California Avocado Commission, and average
crop-type watering requirements based on California Irrigation Management Information
System data.
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The Water Authority and MWD update their water demand and supply projections within
their jurisdictions utilizing the SANDAG most recent growth forecast to project future water
demands. This provides for the important strong link between demand and supply projections
to the land use plans of the cities and the county. This provides for consistency between the
retail and wholesale agencies water demand projections, thereby ensuring that adequate
supplies are and will be planned for the OWD existing and future water users. Existing land
use plans, any revisions to land use plans, and annexations are captured in the SANDAG
updated forecasts. The Water Authority and MWD update their demand forecasts based on
the SANDAG most recent forecast approximately every five years to coincide with
preparation of their urban water management plans. Prior to the next forecast update, local
jurisdictions may require water supply assessment and/or verification reports consistent with
Senate Bills 610 and 221 for proposed land use developments that either have pending or
proposed annexations into the OWD, Water Authority, and MWD or that have revised land
use plans than originally anticipated. The Water Authority and MWD’s next forecasts and
supply planning documents would then capture any increase or decrease in demands caused
by annexations or revised land use plans.
The state of California Business and Professions Code Section 11010 and Government Code
Sections 65867.5, 66455.3, and 66473.7, are referred to as SB 221, requires affirmative
written verification from the water purveyor of the public water system that sufficient water
supplies are to be available for certain residential subdivisions of property prior to approval of
a tentative map. SB 221 compliance does not apply to the Otay Plaza Project, as it is an
industrial project and not a residential subdivision.
In evaluating the availability of sufficient water supply, the Otay Plaza Project proponents are
required to participate in the development of alternative water supply project(s). This can be
achieved through payment of the New Water Supply Fee adopted by the OWD Board in May
2010. These water supply projects are in addition to those identified as sustainable supplies in
the current Water Authority and MWD UWMP, IRP, Master Plans, and other planning
documents. These new water supply projects are in response to the regional water supply
issues related to the Sacramento-San Joaquin Delta and the current ongoing western states
drought conditions. These new additional water supply projects are not currently developed
and are in various stages of the planning process. A few examples of these alternative water
supply projects include the Middle Sweetwater River Basin Groundwater Well project, the
OWD Desalination project, and the Rancho del Rey Groundwater Well project. The Water
Authority and MWD next forecast and supply planning documents would capture any
increase in water supplies resulting from verifiable new water resources developed by the
OWD.
In addition, MWD’s 2010 Regional Urban Water Management Plan identified potential
reserve supplies in the supply capability analysis (Tables 2-9, 2-10, and 2-11), which could be
available to meet any unanticipated demands. The Water Authority and MWD’s next
forecasts and supply planning documents would capture any increase in necessary supply
resources resulting from any new water supply resources.
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Demand Methodology
The OWD water demand projection methodology in the WRMP Update utilizes a component
land use approach. This is done by applying representative values of water use to the acreage
of each land use type and then aggregating these individual land use demand projections into
an overall total demand for the OWD. This is called the water duty method, and the water
duty is the amount of water used in gallons per day per acre per year. This approach is used
for all the land use types except residential development where a demand per dwelling unit
was applied. In addition, commercial and industrial water use categories are further
subdivided by type including separate categories for golf courses, schools, jails, prisons,
hospitals, etc. where specific water demands are established.
To determine water duties for the various types of land use, the entire water meter database of
the OWD is utilized and sorted by the appropriate land use types. The metered consumption
records are then examined for each of the land uses, and water duties are determined for the various
types of residential, commercial, industrial, and institutional land uses. For example the water
duty factors for commercial and industrial land uses are estimated using 1,785 and 893 gallons per
day per acre (gpd/acre) respectively. Residential water demand is established based on the same data
but computed on a per-dwelling unit basis. The focus is to ensure that for each of the residential land
use categories (very low, low, medium, and high densities), the demand criteria used is
adequately represented based upon actual data. This method is used because residential land
uses constitute a substantial percentage of the total developable planning area of the OWD.
The WRMP Update calculates potable water demand by taking the gross acreage of a site and
applying a potable water reduction factor (PWRF), which is intended to represent the
percentage of acreage to be served by potable water and that not served by recycled water for
irrigation. For industrial land use, as an example, the PWRF is 0.95 (i.e., 95% of the site is
assumed to be served by potable water, 5% of the site is assumed to be irrigated with recycled
water). The potable net acreage is then multiplied by the unit demand factor corresponding to
its respective land use. This approach is used in the WRMP Update for all the land use types
except residential development where a demand per dwelling unit is applied. In addition,
commercial and industrial water use categories are further subdivided by type including
separate categories for golf courses, schools, jails, prisons, hospitals, etc. where specific water
demands are allocated.
Otay Water District Projected Demand
By applying the established water duties to the proposed land uses, the projected water
demand for the entire OWD planning area at ultimate development is determined. Projected
water demands for the intervening years were determined using growth rate projections
consistent with data obtained from SANDAG and the experience of the OWD.
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The historical and projected potable water demands for OWD are shown in Table 1.
Table 1
Historical and Projected Potable Water Fiscal Year Demands (acre-feet)
Water Use Sectors 2005 2010 2015 2020 2025 2030 2035
Single Family 21,233 17,165 23,633 28,312 33,600 37,211 40,635
Multi-Family 3,095 3,605 3,444 4,126 4,897 5,423 5,922
Commercial & 1,657 2,243 1,844 2,209 2,622 2,904 3,171
Institutional & 2,262 1,867 2,518 3,017 3,580 3,965 4,330
Landscape 6,458 3,732 10,134 12,141 14,408 15,957 17,425
Other 2,426 584 2,700 3,235 3,839 4,252 4,643
Unaccounted for 547 23 608 729 865 958 1,046
Totals 37,668 29,270 44,883 53,768 63,811 70,669 77,171 Source: Otay Water District 2010 UWMP.
The historical and projected recycled water demands for OWD are shown in Table 2.
Table 2
Historical and Projected Recycled Water Fiscal Year Demands (acre-feet)
Water Use Sector 2005 2010 2015 2020 2025 2030 2035
Landscape 4,090 4,000 4,400 5,000 5,800 6,800 8,000
Totals 4,090 4,000 4,400 5,000 5,800 6,800 8,000
Source: Otay Water District 2010 UWMP, Table 10.
Otay Plaza Project Projected Water Demand
Using the land use demand projection noted above, the projected potable water demand and
projected recycled water demand for the proposed Otay Plaza Project are shown in Table 3
and Table 4, respectively. The expected potable water demand for the Otay Plaza Project is
90,939 gallons per day (gpd) or about 101.9 acre feet per year (AFY). The rezone of the
property to Commercial-Regional is expected to increase the water demand for this project
above what was projected in the District’s Water Resources Master Plan updated November
2010 (WRMP Update) which estimated 53 AFY for the same parcels, but with a lower
industrial use for the property. The projected recycled water demand for the Otay Plaza
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Project is 10,883 gpd or 12.2 AFY, representing about 11% of the total Otay Plaza Project
water demand.
Table 3
Otay Plaza Project Projected Potable
Water Annual Average Demands
Location (Land Use) Gross
Acreage
Potable
Water
Factor
Net Potable
Acreage/Units Unit Rate Average
Demand
Commercial 49.1 90% 44.2 1,785 gpd/ac 78,879
134 Room Hotel 90 gpd/room 12,060
Open Space 2.8 0 0 0 0
Total 51.9 90,939 gpd
The Otay Plaza Project development proponents are required to use recycled water for
irrigation and for other appropriate uses. The primary benefit of using recycled water is that it
will offset the potable water demands by an estimated 11.9 ac-ft/yr. The WRMP Update and
2010 UWMP anticipated that the Otay Plaza Project site would use both potable and recycled
water.
Table 4
Otay Plaza Project Projected Recycled
Water Average Demands
Location (Land Use) Gross
Acreage
Recycled
Water
Factor
Net Recycled
Acreage Unit Rate Average
Demand
Commercial 49.1 10% 4.91 2,155 10,581
Open Space 2.8 0 0 0 0
Total 51.9 acres 10,581 gpd
The rezone of the property to Commercial-Regional is expected to increase the water demand for this project above what was projected in the District’s Water Resources Master Plan updated November 2010 (WRMP Update) which estimated 53 AFY for the same parcels, but with a lower industrial use for the property.
5.1 Demand Management (Water Conservation)
Demand management, or water conservation is a critical part of the Otay Water District 2010
UWMP and its long-term strategy for meeting water supply needs of the OWD customers.
Water conservation is frequently the lowest cost resource available to any water agency. The
goals of the OWD water conservation programs are to:
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• Reduce the demand for more expensive, imported water.
• Demonstrate continued commitment to the Best Management Practices (BMP).
• Ensure a reliable water supply.
The OWD is signatory to the Memorandum of Understanding (MOU) Regarding Urban
Water Conservation in California, which created the California Urban Water Conservation
Council (CUWCC) in 1991 in an effort to reduce California’s long-term water demands.
Water conservation programs are developed and implemented on the premise that water
conservation increases the water supply by reducing the demand on available supply, which is
vital to the optimal utilization of a region’s water supply resources. The OWD participates in
many water conservation programs designed and typically operated on a shared cost
participation program basis among the Water Authority, MWD, and their member agencies.
The demands shown in Tables 1 and 2 take into account implementation of water
conservation measures within OWD.
As one of the first signatories to the MOU Regarding Urban Water Conservation in
California, the OWD has made BMP implementation for water conservation the cornerstone
of its conservation programs and a key element in its water resource management strategy.
As a member of the Water Authority, OWD also benefits from regional programs performed
on behalf of its member agencies. The BMP programs implemented by OWD and regional
BMP programs implemented by the Water Authority that benefit all their member agencies
are addressed in the Otay Water District 2010 UWMP. In partnership with the Water
Authority, the County of San Diego, City of San Diego, City of Chula Vista, and developers,
the OWD water conservation efforts are expected to grow and expand. The resulting savings
directly relate to additional available water in the San Diego County region for beneficial use
within the Water Authority service area, including the OWD.
Additional conservation or water use efficiency measures or programs practiced by the OWD
include the following:
Supervisory Control and Data Acquisition System
The OWD implemented and has operated for many years a Supervisory Control and Data
Acquisition (SCADA) system to control, monitor, and collect data regarding the operation of
the water system. The major facilities that have SCADA capabilities are the water flow
control supply sources, transmission network, pumping stations, and water storage reservoirs.
The SCADA system allows for many and varied useful functions. Some of these functions
provide for operating personnel to monitor the water supply source flow rates, reservoir
levels, turn on or off pumping units, etc. The SCADA system aids in the prevention of water
reservoir overflow events and increases energy efficiency.
Water Conservation Ordinance
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California Water Code Sections 375 et seq. permit public entities which supply water at retail
to adopt and enforce a water conservation program to reduce the quantity of water used by the
people therein for the purpose of conserving water supplies of such public entity. The Otay
Water District Board of Directors established a comprehensive water conservation program
pursuant to California Water Code Sections 375 et seq., based upon the need to conserve
water supplies and to avoid or minimize the effects of any future shortage. A water shortage
could exist based upon the occurrence of one or more of the following conditions:
1. A general water supply shortage due to increased demand or limited supplies. 2. Distribution or storage facilities of the Water Authority or other agencies become inadequate. 3. A major failure of the supply, storage, and distribution facilities of MWD, Water Authority, and/or OWD.
The OWD water conservation ordinance finds and determines that the conditions prevailing in
the San Diego County area require that the available water resources be put to maximum
beneficial use to the extent to which they are capable, and that the waste or unreasonable use,
or unreasonable method of use, of water be prevented and that the conservation of such water
be encouraged with a view to the maximum reasonable and beneficial use thereof in the
interests of the people of the OWD and for the public welfare.
OWD continues to promote water conservation at a variety of events, including those
involving developers in its service area. In addition, OWD developed and manages a number
of its own programs such as the Cash for WaterSmart Plants retrofit program, the Water
Smart Irrigation Upgrade Program, and the Commercial Process Improvement Program.
OWD is currently engaged in a number of conservation and water use efficiency activities.
Listed below are the current programs that are either on-going or were recently concluded:
• Residential Water Surveys: 1,349 completed since 1994
• Large Landscape Surveys: 194 completed since 1990
• Cash for Water Smart Plants Landscape Retrofit Program: over 217,600 square feet of
turf grass replaced with water wise plants since 2003
• Rotating Nozzles Rebated: 3,170
• Residential Weather-Based Irrigation Controller (WBIC) Incentive Program: 231
distributed or rebated since 2004
• Residential High Efficiency Clothes Washers: 7,187 rebates since 1994
• Residential ULFT/HET Rebate Program: 22,376 rebates provided between 1991-2010
• Outreach Efforts to OWD Customers - the OWD promotes its conservation programs
through staffing outreach events, bill inserts, articles in the OWD’s quarterly customer
Pipeline newsletter, direct mailings to OWD customers, the OWD’s webpage and
through the Water Authority’s marketing efforts.
• School Education Programs- the OWD funds school tours of the Water Conservation
Garden, co-funds Splash Labs, provides classroom water themed kits, maintains a
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library of school age appropriate water themed books, DVDs, and videos, and runs
both a school poster contest and a water themed photo contest.
• Water efficiency in new construction through Cal Green and the Model Water
Efficient Landscape Ordinance
• Focus on Commercial/Institutional/Industrial through Promoting MWD’s Save a Buck
(Commercial) Program in conjunction with the OWD’s own Commercial Process
Improvement Program
As a signatory to the MOU Regarding Urban Water Conservation in California, the OWD is
required to submit biannual reports that detail the implementation of current water
conservation practices. The OWD voluntarily agreed to implement the fourteen water
conservation Best Management Practices beginning in 1992. The OWD submits its report to
the CUWCC every two years. The OWD BMP Reports for 2005 to 2010, as well as the BMP
Coverage Report for 1999-2010, are included in the Otay Water District 2010 UWMP.
Section 6 - Existing and Projected Supplies
The OWD currently does not have an independent raw or potable water supply source. The
OWD is a member public agency of the Water Authority. The Water Authority is a member
public agency of MWD. The statutory relationships between the Water Authority and its
member agencies, and MWD and its member agencies, respectively, establish the scope of the
OWD entitlement to water from these two agencies.
The Water Authority through two delivery pipelines, referred to as Pipeline No. 4 and the
Helix Flume Pipeline, currently supply the OWD with 100 percent of its potable water. The
Water Authority in turn, currently purchases the majority of its water from MWD. Due to the
OWD reliance on these two agencies, this WSA Report includes referenced documents that
contain information on the existing and projected supplies, supply programs, and related
projects of the Water Authority and MWD. The OWD, Water Authority, and MWD are
actively pursuing programs and projects to further diversify their water supply resources.
The description of local recycled water supplies available to the OWD is also discussed
below.
6.1 Metropolitan Water District of Southern California 2010 Regional
Urban Water Management Plan
In November 2010, MWD adopted its 2010 Regional Urban Water Management Plan
(RUWMP). The 2010 RUWMP provides MWD’s member agencies, retail water utilities,
cities, and counties within its service area with, among other things, a detailed evaluation of
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the supplies necessary to meet future demands, and an evaluation of reasonable and practical
efficient water uses, recycling, and conservation activities. During the preparation of the
2010 RUWMP, MWD also utilized the previous SANDAG regional growth forecast in
calculating regional water demands for the Water Authority service area.
6.1.1 Availability of Sufficient Supplies and Plans for Acquiring
Additional Supplies
MWD is a wholesale supplier of water to its member public agencies and obtains its supplies
from two primary sources: the Colorado River, via the Colorado River Aqueduct (CRA),
which it owns and operates, and Northern California, via the State Water Project (SWP). The
2010 RUWMP documents the availability of these existing supplies and additional supplies
necessary to meet future demands.
MWD’s Integrated Resources Plan (IRP) identifies a mix of resources (imported and local)
that, when implemented, will provide 100 percent reliability for full-service demands through
the attainment of regional targets set for conservation, local supplies, State Water Project
supplies, Colorado River supplies, groundwater banking, and water transfers. The 2010
update to the IRP (2010 IRP Update) includes a planning buffer supply intended to mitigate
against the risks associated with implementation of local and imported supply programs and
for the risk that future demands could be higher than projected. The planning buffer identifies
an additional increment of water that could potentially be developed when needed and if other
supplies are not fully implemented as planned. As part of implementation of the planning
buffer, MWD periodically evaluates supply development, supply conditions, and projected
demands to ensure that the region is not under or over developing supplies. Managed
properly, the planning buffer will help ensure that the southern California region, including
San Diego County, will have adequate water supplies to meet future demands.
In November 2010, MWD adopted its 2010 RUWMP in accordance with state law. The
resource targets included in the preceding 2010 IRP Update serve as the foundation for the
planning assumptions used in the 2010 RUWMP. MWD’s 2010 RUWMP contains a water
supply reliability assessment that includes a detailed evaluation of the supplies necessary to
meet demands over a 25-year period in average, single dry year, and multiple dry year
periods. As part of this process, MWD also uses the current SANDAG regional growth
forecast in calculating regional water demands for the Water Authority’s service area.
As stated in MWD’s 2010 RUWMP, the plan may be used as a source document for meeting
the requirements of SB 610 and SB 221 until the next scheduled update is completed in 2015.
The 2010 RUWMP includes a “Justifications for Supply Projections” in Appendix A.3, that
provides detailed documentation of the planning, legal, financial, and regulatory basis for
including each source of supply in the plan. A copy of MWD’s 2010 RUWMP can be found
on the internet at the following site address:
http://www.mwdh2o.com/mwdh2o/pages/yourwater/RUWMP/RUWMP_2010.pdf
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The UWMPs for both MWD and the Water Authority will include the increase in demand
projections included in SANDAG’s Series 12 Update and from the projections from Otay
Water District WRMP Update.
Water supply agencies throughout California continue to face climate, environmental, legal,
and other challenges that impact water source supply conditions, such as the court rulings
regarding the Sacramento-San Joaquin Delta and the current western states drought
conditions. Challenges such as these essentially always will be present. The regional water
supply agencies, the Water Authority and MWD, along with OWD nevertheless fully intend
to have sufficient, reliable supplies to serve demands.
6.1.2 MWD Capital Investment Plan
MWD prepares a Capital Investment Plan as part of its annual budget approval process. The
cost, purpose, justification, status, progress, etc. of MWD’s infrastructure projects to deliver
existing and future supplies are documented in the Capital Investment Plan. The financing of
these projects is addressed as part of the annual budget approval process.
MWD’s Capital Investment Plan includes a series of projects identified from MWD studies of
projected water needs, which, when considered along with operational demands on aging
facilities and new water quality regulations, identify the capital projects needed to maintain
infrastructure reliability and water quality standards, improve efficiency, and provide future
cost savings. All projects within the Capital Investment Plan are evaluated against an
objective set of criteria to ensure they are aligned with the MWD’s goals of supply reliability
and quality.
6.2 San Diego County Water Authority Regional Water Supplies
The Water Authority has adopted plans and is taking specific actions to develop adequate
water supplies to help meet existing and future water demands within the San Diego region.
This section contains details on the supplies being developed by the Water Authority. A
summary of recent actions pertaining to development of these supplies includes:
• In accordance with the Urban Water Management Planning Act, the Water Authority
adopted their 2010 UWMP in June 2011. The updated Water Authority 2010 UWMP
identifies a diverse mix of local and imported water supplies to meet future demands. A
copy of the updated Water Authority 2010 UWMP can be found on the internet at
http://www.sdcwa.org/2010-urban-water-management-plan
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• As part of the October 2003 Quantification Settlement Agreement (QSA), the Water
Authority was assigned MWD’s rights to 77,700 acre feet per year of conserved water
from the All-American Canal (AAC) and Coachella Canal (CC) lining projects.
Deliveries of this conserved water from the CC reached the region in 2007 and
deliveries from the AAC reached the region in 2010. Expected supplies from the canal
lining projects are considered verifiable Water Authority supplies.
• Deliveries of conserved agricultural water from the Imperial Irrigation District (IID) to
San Diego County have increased annually since 2003, with 70,000 acre feet per year
of deliveries in Fiscal Year (FY) 2010. The quantities will increase annually to 200,000
acre feet per year by 2021, and then remain fixed for the duration of the transfer
agreement.
Through implementation of the Water Authority and member agency planned supply projects,
along with reliable imported water supplies from MWD, the region anticipates having
adequate supplies to meet existing and future water demands.
To ensure sufficient supplies to meet projected growth in the San Diego region, the Water
Authority uses the SANDAG most recent regional growth forecast in calculating regional
water demands. The SANDAG regional growth forecast is based on the plans and policies of
the land-use jurisdictions with San Diego County. The existing and future demands of the
member agencies are included in the Water Authority’s projections.
6.2.1 Availability of Sufficient Supplies and Plans for Acquiring
Additional Supplies
The Water Authority currently obtains imported supplies from MWD, conserved water from
the AAC and CC lining projects, and an increasing amount of conserved agricultural water
from IID. Of the twenty-seven member agencies that purchase water supplies from MWD,
the Water Authority is MWD’s largest customer.
Section 135 of MWD’s Act defines the preferential right to water for each of its member
agencies. As calculated by MWD, the Water Authority’s preferential right as of December
11, 2012 is 17.22 percent of MWD’s supply, while the Water Authority accounted for
approximately 25 percent of MWD’s total revenue. Under preferential rights, MWD could
allocate water without regard to historic water purchases or dependence on MWD. The Water
Authority and its member agencies are taking measures to reduce dependence on MWD
through development of additional supplies and a water supply portfolio that would not be
jeopardized by a preferential rights allocation. MWD has stated, consistent with Section 4202
of its Administrative Code that it is prepared to provide the Water Authority’s service area
with adequate supplies of water to meet expanding and increasing needs in the years ahead.
When and as additional water resources are required to meet increasing needs, MWD stated it
will be prepared to deliver such supplies. In Section ES-5 of their 2010 RUWMP, MWD
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states that MWD has supply capacities that would be sufficient to meet expected demands
from 2015 through 2035. MWD has plans for supply implementation and continued
development of a diversified resource mix including programs in the Colorado River
Aqueduct, State Water Project, Central Valley Transfers, local resource projects, and in-
region storage that enables the region to meet its water supply needs.
The Water Authority has made large investments in MWD’s facilities and will continue to
include imported supplies from MWD in the future resource mix. As discussed in the Water
Authority’s 2010 UWMP, the Water Authority and its member agencies are planning to
diversify the San Diego regions supply portfolio and reduce purchases from MWD.
As part of the Water Authority’s diversification efforts, the Water Authority is now taking
delivery of conserved agricultural water from IID and water saved from the AAC and CC
lining projects. The CC lining project is complete and the Water Authority has essentially
completed construction of the AAC lining project. Table 5 summarizes the Water Authority’s
supply sources with detailed information included in the sections to follow. Deliveries from
MWD are also included in Table 5, which is further discussed in Section 6.1 above. The
Water Authority’s member agencies provided the verifiable local supply targets for
groundwater, groundwater recovery, recycled water, and surface water, which are discussed in
more detail in Section 5 of the Water Authority’s 2010 UWMP.
Table 5
Projected Verifiable Water Supplies – Water Authority Service Area Normal Year (acre feet)
Water Supply Sources 2015 2020 2025 2030 2035
Water Authority Supplies
MWD Supplies 358,189 230,601 259,694 293,239 323,838
Water Authority/IID Transfer 100,000 190,000 200,000 200,000 200,000
AAC and CC Lining Projects 80,200 80,200 80,200 80,200 80,200
Proposed Regional Seawater
Desalination (1) 0 56,000 56,000 56,000 56,000
Member Agency Supplies
Surface Water 48,206 47,940 47,878 47,542 47,289
Water Recycling 38,660 43,728 46,603 48,278 49,998
Groundwater 11,710 11,100 12,100 12,840 12,840
Groundwater Recovery 10,320 15,520 15,520 15,520 15,520
Total Projected Supplies 647,285 675,089 717,995 753,619 785,685
Source: Water Authority 2010 Urban Water Management Plan – Table 9-1.
Note 1: On November 29, 2012, the Water Authority approved a water purchase agreement with Poseidon for
48,000 AFY with the right to purchase up to 56,000 AFY
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Section 5 of the Water Authority’s 2010 UWMP also includes a discussion on the local
supply target for seawater desalination. Seawater desalination supplies represent a significant
future local resource in the Water Authority’s service area.
The Carlsbad Desalination Project (Project) is a fully-permitted seawater desalination plant
and conveyance pipeline designed to provide a highly reliable local supply of up to 56,000
acre-feet (AF) per year for the region. In 2020, the Project would account for approximately
8% of the total projected regional supply and 30% of all locally generated water in San Diego
County. If the project becomes operational in 2016, it will more than double the amount of
local supplies developed in the region since 1991. The desalination plant itself will be fully
financed, built, and operated by Poseidon. The Water Authority will purchase water from the
plant under a water purchase agreement. The new pipeline connecting the desalination plant
with the Water Authority’s Second Aqueduct will be owned and operated by the Water
Authority, but responsibility for design and construction will reside with Poseidon through a
separate Design-Build Agreement. The Water Authority will be responsible for aqueduct
improvements, including the relining and rehabilitation of Pipeline 3 to accept desalinated
water under higher operating pressures, modifications to the San Marcos Vent that allows the
flow of water between Pipelines 3 and 4, and improvements at the Twin Oaks Valley Water
Treatment Plant necessary to integrate desalinated water into the Water Authority’s system
for optimal distribution to member agencies.
On July 22, 2010, the Board approved a Term Sheet between the Water Authority and
Poseidon Resources that outlined the key terms and conditions that would be detailed and
incorporated in a comprehensive Water Purchase Agreement (WPA). Beginning in October
2011 and under the direction of the Board’s Carlsbad Desalination Project Advisory Group,
staff began developing and negotiating with Poseidon a WPA consistent with the July 22,
2010 Board approved Term Sheet. The July 2010 Term Sheet also identified specific
conditions precedent to Board consideration of the WPA. On November 29, 2012, the Water
Authority Board adopted a resolution approving the Water Purchase Agreement (WPA).
The Water Authority’s existing and planned supplies from the IID transfer and canal lining
projects are considered “drought-proof” supplies and should be available at the yields shown
in Table 5 in normal water year supply and demand assessment. Single dry year and multiple
dry year scenarios are discussed in more detail in Section 9 of the Water Authority’s 2010
UWMP.
As part of preparation of a written water supply assessment and/or verification report, an
agency’s shortage contingency analysis should be considered in determining sufficiency of
supply. Section 11 of the Water Authority’s 2010 UWMP contains a detailed shortage
contingency analysis that addresses a regional catastrophic shortage situation and drought
management. The analysis demonstrates that the Water Authority and its member agencies,
through the Emergency Response Plan, Emergency Storage Project, and Drought
Management Plan (DMP) are taking actions to prepare for and appropriately handle an
interruption of water supplies. The DMP, adopted in May 2006, provides the Water Authority
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and its member agencies with a series of potential actions to take when faced with a shortage
of imported water supplies from MWD due to prolonged drought or other supply shortfall
conditions. The actions will help the region avoid or minimize the impacts of shortages and
ensure an equitable allocation of supplies throughout the San Diego region.
6.2.1.1 Water Authority-Imperial Irrigation District Water Conservation
and Transfer Agreement
The QSA was signed in October 2003, and resolves long-standing disputes regarding priority
and use of Colorado River water and creates a baseline for implementing water transfers. With
approval of the QSA, the Water Authority and IID were able to implement their Water
Conservation and Transfer Agreement. This agreement not only provides reliability for the San
Diego region, but also assists California in reducing its use of Colorado River water to its legal
allocation.
On April 29, 1998, the Water Authority signed a historic agreement with IID for the long-term
transfer of conserved Colorado River water to San Diego County. The Water Authority-IID
Water Conservation and Transfer Agreement (Transfer Agreement) is the largest agriculture-to-
urban water transfer in United States history. Colorado River water will be conserved by
Imperial Valley farmers who voluntarily participate in the program and then transferred to the
Water Authority for use in San Diego County.
Implementation Status
On October 10, 2003, the Water Authority and IID executed an amendment to the original 1998
Transfer Agreement. This amendment modified certain aspects of the Transfer Agreement to be
consistent with the terms and conditions of the QSA and related agreements. It also modified
other aspects of the agreement to lessen the environmental impacts of the transfer of conserved
water. The amendment was expressly contingent on the approval and implementation of the
QSA, which was also executed on October 10, 2003. Section 6.2.1, “Colorado River,” contains
details on the QSA.
On November 5, 2003, IID filed a complaint in Imperial County Superior Court seeking
validation of 13 contracts associated with the Transfer Agreement and the QSA. Imperial
County and various private parties filed additional suits in Superior Court, alleging violations of
the California Environmental Quality Act (CEQA), the California Water Code, and other laws
related to the approval of the QSA, the water transfer, and related agreements. The lawsuits were
coordinated for trial. The IID, Coachella Valley Water District, MWD, the Water Authority, and
state are defending these suits and coordinating to seek validation of the contracts. In January
2010, a California Superior Court judge ruled that the QSA and 11 related agreements were
invalid, because one of the agreements created an open-ended financial obligation for the state,
in violation of California’s constitution. The QSA parties appealed this decision and are
continuing to seek validation of the contracts. The appeal is currently pending in the Third
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District Court of Appeal. A stay of the trial court judgment has been issued during the appeal.
Implementation of the transfer provisions is proceeding during litigation.
Expected Supply
Deliveries into San Diego County from the transfer began in 2003 with an initial transfer of
10,000 acre feet per year. The Water Authority received increasing amounts of transfer water
each year, according to a water delivery schedule contained in the transfer agreement. In 2012,
the Water Authority will receive 90,000 acre feet per year. The quantities will increase annually
to 200,000 acre feet per year by 2021 then remain fixed for the duration of the transfer
agreement. The initial term of the Transfer Agreement is 45 years, with a provision that either
agency may extend the agreement for an additional 30-year term.
During dry years, when water availability is low, the conserved water will be transferred
under IID’s Colorado River rights, which are among the most senior in the Lower Colorado
River Basin. Without the protection of these rights, the Water Authority could suffer delivery
cutbacks. In recognition for the value of such reliability, the 1998 contract required the Water
Authority to pay a premium on transfer water under defined regional shortage circumstances.
The shortage premium period duration is the period of consecutive days during which any of the
following exist: 1) a Water Authority shortage; 2) a shortage condition for the Lower Colorado
River as declared by the Secretary; and 3) a Critical Year. Under terms of the October 2003
amendment, the shortage premium will not be included in the cost formula until Agreement Year
16.
Transportation
The Water Authority entered into a water exchange agreement with MWD on October 10, 2003,
to transport the Water Authority–IID transfer water from the Colorado River to San Diego
County. Under the exchange agreement, MWD takes delivery of the transfer water through its
Colorado River Aqueduct. In exchange, MWD delivers to the Water Authority a like quantity
and quality of water. The Water Authority pays MWD’s applicable wheeling rate for each acre-
feet of exchange water delivered. Under the terms of the water exchange agreement, MWD will
make delivery of the transfer water for 35 years, unless the Water Authority and MWD elect to
extend the agreement another 10 years for a total of 45 years.
Cost/Financing
The costs associated with the transfer are financed through the Water Authority’s rates and
charges. In the agreement between the Water Authority and IID, the price for the transfer water
started at $258 per acre-feet and increased by a set amount for the first seven years. In December
2009, the Water Authority and IID executed a fifth amendment to the water transfer agreement
that sets the price per acre-feet for transfer water for calendar years 2010 through 2015,
beginning at $405 per acre-feet in 2010 and increasing to $624 per acre-feet in 2015. For
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calendar years 2016 through 2034, the unit price will be adjusted using an agreed-upon index.
The amendment also required the Water Authority to pay IID $6 million at the end of calendar
year 2009 and another $50 million on or before October 1, 2010, provided that a transfer
stoppage is not in effect as a result of a court order in the QSA coordinated cases. Beginning in
2035, either the Water Authority or IID can, if certain criteria are met, elect a market rate price
through a formula described in the water transfer agreement.
The October 2003 exchange agreement between MWD and the Water Authority set the initial
cost to transport the conserved water at $253 per acre-feet. Thereafter, the price is set to be equal
to the charge or charges set by MWD’s Board of Directors pursuant to applicable laws and
regulation, and generally applicable to the conveyance of water by MWD on behalf of its
member agencies. The transportation charge in 2010 was $314 per acre-feet.
The Water Authority is providing $10 million to help offset potential socioeconomic impacts
associated with temporary land fallowing. IID will credit the Water Authority for these funds
during years 16 through 45. In 2007, the Water Authority prepaid IID an additional $10 million
for future deliveries of water. IID will credit the Water Authority for this up-front payment
during years 16 through 30.
As part of implementation of the QSA and water transfer, the Water Authority also entered into
an environmental cost sharing agreement. Under this agreement the Water Authority is
contributing a total of $64 million to fund environmental mitigation projects and the Salton Sea
Restoration Fund.
Written Contracts or Other Proof
The supply and costs associated with the transfer are based primarily on the following
documents:
Agreement for Transfer of Conserved Water by and between IID and the Water Authority (April
29, 1998). This Agreement provides for a market-based transaction in which the Water
Authority would pay IID a unit price for agricultural water conserved by IID and transferred to
the Water Authority.
Revised Fourth Amendment to Agreement between IID and the Water Authority for Transfer of
Conserved Water (October 10, 2003). Consistent with the executed Quantification Settlement
Agreement (QSA) and related agreements, the amendments restructure the agreement and
modify it to minimize the environmental impacts of the transfer of conserved water to the Water
Authority.
Amended and Restated Agreement between MWD and Water Authority for the Exchange of
Water (October 10, 2003). This agreement was executed pursuant to the QSA and provides for
delivery of the transfer water to the Water Authority.
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Environmental Cost Sharing, Funding, and Habitat Conservation Plan Development Agreement
among IID, Coachella Valley Water District (CVWD), and Water Authority (October 10, 2003).
This Agreement provides for the specified allocation of QSA-related environmental review,
mitigation, and litigation costs for the term of the QSA, and for development of a Habitat
Conservation Plan.
Quantification Settlement Agreement Joint Powers Authority Creation and Funding Agreement
(October 10, 2003). The purpose of this agreement is to create and fund the QSA Joint Powers
Authority and to establish the limits of the funding obligation of CVWD, IID, and Water
Authority for environmental mitigation and Salton Sea restoration pursuant to SB 654
(Machado).
Fifth Amendment to Agreement Between Imperial Irrigation District and San Diego County
Water Authority for Transfer of Conserved Water (December 21, 2009). This agreement
implements a settlement between the Water Authority and IID regarding the base contract price
of transferred water.
Federal, State, and Local Permits/Approvals
Federal Endangered Species Act Permit. The U.S. Fish and Wildlife Service (USFWS) issued a
Biological Opinion on January 12, 2001, that provides incidental take authorization and certain
measures required to offset species impacts on the Colorado River regarding such actions.
State Water Resources Control Board (SWRCB) Petition. SWRCB adopted Water Rights Order
2002-0016 concerning IID and Water Authority’s amended joint petition for approval of a long-
term transfer of conserved water from IID to the Water Authority and to change the point of
diversion, place of use, and purpose of use under Permit 7643.
Environmental Impact Report (EIR) for Conservation and Transfer Agreement. As lead agency,
IID certified the Final EIR for the Conservation and Transfer Agreement on June 28, 2002.
U. S. Fish and Wildlife Service Draft Biological Opinion and Incidental Take Statement on the
Bureau of Reclamation's Voluntary Fish and Wildlife Conservation Measures and Associated
Conservation Agreements with the California Water Agencies (12/18/02). The U. S. Fish and
Wildlife Service issued the biological opinion/incidental take statement for water transfer
activities involving the Bureau of Reclamation and associated with IID/other California water
agencies' actions on listed species in the Imperial Valley and Salton Sea (per the June 28, 2002
EIR).
Addendum to EIR for Conservation and Transfer Agreement. IID as lead agency and Water
Authority as responsible agency approved addendum to EIR in October 2003.
Environmental Impact Statement (EIS) for Conservation and Transfer Agreement. Bureau of
Reclamation issued a Record of Decision on the EIS in October 2003.
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CA Department of Fish and Game California Endangered Species Act Incidental Take Permit
#2081-2003-024-006). The California Department of Fish and Game issued this permit
(10/22/04) for potential take effects on state-listed/fully protected species associated with
IID/other California water agencies' actions on listed species in the Imperial Valley and Salton
Sea (per the June 28, 2002 EIR).
California Endangered Species Act (CESA) Permit. A CESA permit was issued by California
Department of Fish and Game (CDFG) on April 4, 2005, providing incidental take authorization
for potential species impacts on the Colorado River.
6.2.1.2 All-American Canal and Coachella Canal Lining Projects
As part of the QSA and related contracts, the Water Authority was assigned MWD’s rights to
77,700 acre-feet per year of conserved water from projects that will line the All-American
Canal (AAC) and Coachella Canal (CC). The projects will reduce the loss of water that
currently occurs through seepage, and the conserved water will be delivered to the Water
Authority. This conserved water will provide the San Diego region with an additional 8.5
million acre-feet over the 110-year life of the agreement.
Implementation Status
The CC lining project began in November 2004 and was completed in 2006. Deliveries of
conserved water to the Water Authority began in 2007. The project constructed a 37-mile
parallel canal adjacent to the CC. The AAC lining project was begun in 2005 and was
completed in 2010. The lining project constructed a concrete-lined canal parallel to 24 miles
of the existing AAC from Pilot Knob to Drop 3.
In July 2005, a lawsuit (CDEM v United States, Case No. CV-S-05-0870-KJD-PAL) was filed
in the U. S. District Court for the District of Nevada on behalf of U.S. and Mexican groups
challenging the lining of the AAC. The lawsuit, which names the Secretary of the Interior as
a defendant, claims that seepage water from the canal belongs to water users in Mexico.
California water agencies note that the seepage water is actually part of California's Colorado
River allocation and not part of Mexico's allocation. The plaintiffs also allege a failure by the
United States to comply with environmental laws. Federal officials have stated that they
intend to vigorously defend the case.
Expected Supply
The AAC lining project makes 67,700 acre-feet of Colorado River water per year available
for allocation to the Water Authority and San Luis Rey Indian water rights settlement parties.
The CC lining project makes 26,000 acre-feet of Colorado River water each year available for
allocation. The 2003 Allocation Agreement provides for 16,000 acre-feet per year of
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conserved canal lining water to be allocated to the San Luis Rey Indian Water Rights
Settlement Parties. The remaining amount, 77,700 acre-feet per year, is to be available to the
Water Authority, with up to an additional 4,850 acre-feet per year available to the Water
Authority depending on environmental requirements from the CC lining project. For planning
purposes, the Water Authority assumes that 2,500 acre-feet of the 4,850 acre-feet will be
available each year for delivery, for a total of 80,200 acre-feet per year of that supply.
According to the Allocation Agreement, IID has call rights to a portion (5,000 acre-feet per
year) of the conserved water upon termination of the QSA for the remainder of the 110 years
of the Allocation Agreement and upon satisfying certain conditions. The term of the QSA is
for up to 75 years.
Transportation
The October 2003 Exchange Agreement between the Water Authority and MWD provides for
the delivery of the conserved water from the canal lining projects. The Water Authority pays
MWD’s applicable wheeling rate for each acre-foot of exchange water delivered. In the
Agreement, MWD will deliver the canal lining water for the term of the Allocation
Agreement (110 years).
Cost/Financing
Under California Water Code Section 12560 et seq., the Water Authority received $200
million in state funds for construction of the canal lining projects. In addition, $20 million
was made available from Proposition 50 and $36 million from Proposition 84. The Water
Authority was responsible for additional expenses above the funds provided by the state.
The rate to be paid to transport the canal lining water will be equal to the charge or charges set
by MWD’s Board of Directors pursuant to applicable law and regulation and generally
applicable to the conveyance of water by MWD on behalf of its member agencies.
In accordance with the Allocation Agreement, the Water Authority is responsible for a portion
of the net additional Operation, Maintenance, and Repair (OM&R) costs for the lined canals.
Any costs associated with the lining projects as proposed are to be financed through the Water
Authority’s rates and charges.
Written Contracts or Other Proof
The expected supply and costs associated with the lining projects are based primarily on the
following documents:
U.S. Public Law 100-675 (1988). Authorized the Department of the Interior to reduce seepage
from the existing earthen AAC and CC. The law provides that conserved water will be made
available to specified California contracting water agencies according to established priorities.
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California Department of Water Resources - MWD Funding Agreement (2001). Reimburse
MWD for project work necessary to construct the lining of the CC in an amount not to exceed
$74 million. Modified by First Amendment (2004) to replace MWD with the Authority.
Modified by Second Amendment (2004) to increase funding amount to $83.65 million, with
addition of funds from Proposition 50.
California Department of Water Resources - IID Funding Agreement (2001). Reimburse IID for
project work necessary to construct a lined AAC in an amount not to exceed $126 million.
MWD - CVWD Assignment and Delegation of Design Obligations Agreement (2002). Assigns
design of the CC lining project to CVWD.
MWD - CVWD Financial Arrangements Agreement for Design Obligations (2002). Obligates
MWD to advance funds to CVWD to cover costs for CC lining project design and CVWD to
invoice MWD to permit the Department of Water Resources to be billed for work completed.
Allocation Agreement among the United States of America, The MWD Water District of
Southern California, Coachella Valley Water District, Imperial Irrigation District, San Diego
County Water Authority, the La Jolla, Pala, Pauma, Rincon, and San Pasqual Bands of Mission
Indians, the San Luis Rey River Indian Water Authority, the City of Escondido, and Vista
Irrigation District (October 10, 2003). This agreement includes assignment of MWD’s rights
and interest in delivery of 77,700 acre-feet of Colorado River water previously intended to be
delivered to MWD to the Water Authority. Allocates water from the AAC and CC lining
projects for at least 110 years to the Water Authority, the San Luis Rey Indian Water Rights
Settlement Parties, and IID, if it exercises its call rights.
Amended and Restated Agreement between MWD and Water Authority for the Exchange of
Water (October 10, 2003). This agreement was executed pursuant to the QSA and provides for
delivery of the conserved canal lining water to the Water Authority.
Agreement between MWD and Water Authority regarding Assignment of Agreements related to
the AAC and CC Lining Projects. This agreement was executed in April 2004 and assigns
MWD's rights to the Water Authority for agreements that had been executed to facilitate funding
and construction of the AAC and CC lining projects:
Assignment and Delegation of Construction Obligations for the Coachella Canal Lining Project
under the Department of Water Resources Funding Agreement No. 4600001474 from the San
Diego County Water Authority to the Coachella Valley Water District, dated September 8, 2004.
Agreement Regarding the Financial Arrangements between the San Diego County Water
Authority and Coachella Valley Water District for the Construction Obligations for the
Coachella Canal Lining Project, dated September 8, 2004.
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Agreement No. 04-XX-30-W0429 Among the United States Bureau of Reclamation, the
Coachella Valley Water District, and the San Diego County Water Authority for the
Construction of the Coachella Canal Lining Project Pursuant to Title II of Public Law 100-675,
dated October 19, 2004.
California Water Code Section 12560 et seq. This Water Code Section provides for $200
million to be appropriated to the Department of Water Resources to help fund the canal lining
projects in furtherance of implementing California’s Colorado River Water Use Plan.
California Water Code Section 79567. This Water Code Section identifies $20 million as
available for appropriation by the California Legislature from the Water Security, Clean
Drinking Water, Coastal, and Beach Protection Fund of 2002 (Proposition 50) to DWR for
grants for canal lining and related projects necessary to reduce Colorado River water use.
According to the Allocation Agreement, it is the intention of the agencies that those funds will be
available for use by the Water Authority, IID, or CVWD for the AAC and CC lining projects.
California Public Resources Code Section 75050(b) (1). This section identifies up to $36 million
as available for water conservation projects that implement the Allocation Agreement as defined
in the Quantification Settlement Agreement.
Federal, State, and Local Permits/Approvals
AAC Lining Project Final EIS/EIR (March 1994). A final EIR/EIS analyzing the potential
impacts of lining the AAC was completed by the Bureau of Reclamation (Reclamation) in March
1994. A Record of Decision was signed by Reclamation in July 1994, implementing the
preferred alternative for lining the AAC. A re-examination and analysis of these environmental
compliance documents by Reclamation in November 1999 determined that these documents
continued to meet the requirements of the NEPA and the CEQA and would be valid in the future.
CC Lining Project Final EIS/EIR (April 2001). The final EIR/EIS for the CC lining project was
completed in 2001. Reclamation signed the Record of Decision in April 2002. An amended
Record of Decision has also been signed to take into account revisions to the project description.
Mitigation, Monitoring, and Reporting Program for Coachella Canal Lining Project, SCH
#1990020408; prepared by Coachella Valley Water District, May 16, 2001.
Environmental Commitment Plan for the Coachella Canal Lining Project, approved by the US
Bureau of Reclamation (Boulder City, NV) on March 4, 2003.
Environmental Commitment Plan and Addendum to the All-American Canal Lining Project
EIS/EIR California State Clearinghouse Number SCH 90010472 (June 2004, prepared by
IID).
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Addendum to Final EIS/EIR and Amendment to Environmental Commitment Plan for the
All-American Canal Lining Project (approved June 27, 2006, by IID Board of Directors).
6.2.1.3 Carlsbad Seawater Desalination Project
Development of seawater desalination in San Diego County will assist the region in
diversifying its water resources, reduce dependence on imported supplies, and provide a new
drought-proof, locally treated water supply. The Carlsbad Desalination Project is a fully-
permitted seawater desalination plant and conveyance pipeline currently being developed by
Poseidon, a private investor–owned company that develops water and wastewater
infrastructure. The project, located at the Encina Power Station in Carlsbad, has been in
development since 1998 and was incorporated into the Water Authority’s 2003 Water
Facilities Master Plan and the 2010 UWMP. The Carlsbad Desalination Project has obtained
all required permits and environmental clearances and, when completed, will provide a highly
reliable local supply of 48,000 to 56,000 acre-feet per year for the region.
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Implementation Status
The Project has obtained all required permits and environmental clearances, including the
following:
• National Pollutant Discharge Elimination System (NPDES) Discharge Permit
(Regional Water Quality Control Board)
• Conditional Drinking Water Permit (California Department of Health Services)
• State Lands Commission Lease (State Lands Commission)
• Coastal Development Permit (California Coastal Commission)
IDE Technologies, a worldwide leader in the design, construction, and operation of
desalination plants, was selected by Poseidon to be the desalination process contractor for the
Project.
On July 22, 2010, the Board approved a Term Sheet between the Water Authority and
Poseidon Resources that outlined the key terms and conditions that would be detailed and
incorporated in a comprehensive Water Purchase Agreement (WPA). Beginning in October
2011 and under the direction of the Board’s Carlsbad Desalination Project Advisory Group,
staff began developing and negotiating with Poseidon a WPA consistent with the July 22,
2010 Board approved Term Sheet. The July 2010 Term Sheet also identified specific
conditions precedent to Board consideration of the WPA.
On November 29, 2012, the Water Authority Board adopted a resolution approving the
Design-Build Agreement between the Water Authority and Poseidon. The Design-Build
Agreement establishes the commercial and technical terms for implementation of the
desalination product pipeline improvements. These improvements consist of an approximate
10-mile long, 54-inch diameter conveyance pipeline connecting the Desalination Plant to the
Water Authority’s Second Aqueduct. The pipeline will generally be constructed within
improved streets in commercial and industrial areas in the cities of Carlsbad, Vista, and San
Marcos. The Water Authority will own the Project Water Pipeline Improvements upon
execution of the Design-Build Agreement, and upon completion and acceptance of
construction, the Water Authority will assume operational control of all pipeline
improvements.
Expected Supply
When completed, the Project will provide a highly reliable local supply of 48,000 to 56,000
acre-feet per year of supply for the region, available in both normal and dry hydrologic
conditions. In 2020, the Project would account for approximately 8% of the total projected
regional supply and 30% of all locally generated water in San Diego County. When the
project becomes operational in 2016, it will more than double the amount of local supplies
developed in the region since 1991.
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Transportation
On November 29, 2012, the Water Authority Board adopted a resolution approving the
Design-Build Agreement between the Water Authority and Poseidon. The Design-Build
Agreement establishes the commercial and technical terms for implementation of the
desalination product pipeline improvements. These improvements consist of an approximate
10-mile long, 54-inch diameter conveyance pipeline connecting the Desalination Plant to the
Water Authority’s Second Aqueduct. The pipeline will generally be constructed within
improved streets in commercial and industrial areas in the cities of Carlsbad, Vista, and San
Marcos. The Water Authority will own the Project Water Pipeline Improvements upon
execution of the Design-Build Agreement, and upon completion and acceptance of
construction, the Water Authority will assume operational control of all pipeline
improvements.
The Water Authority will be responsible for aqueduct improvements, including the relining
and rehabilitation of Pipeline 3 to accept desalinated water under higher operating pressures,
modifications to the San Marcos Vent that allows the flow of water between Pipelines 3 and
4, and improvements at the Twin Oaks Valley Water Treatment Plant necessary to integrate
desalinated water into the Water Authority’s system for optimal distribution to member
agencies.
Cost/Financing
The plant and the offsite pipeline will be financed through tax exempt government bonds
issued for the Water Authority by the California Pollution Control Financing Authority
(CPCFA). On November 29, 2012, the Water Authority Board adopted a resolution
approving agreements to accomplish tax exempt project financing through the CPCFA.
A preliminary September 2012 unit cost estimate was $2,300/AF. The Water Authority’s
water purchase costs would be financed through Water Authority rates and charges. Poseidon
is financing the capital cost of the Project with a combination of private equity and tax-
exempt Private Activity Bonds.
Written Contracts or Other Proof
The expected supply and costs associated with the Carlsbad Desalination Project are based
primarily on the following documents:
Development Agreement between City of Carlsbad and Poseidon (October 2009). A
Development Agreement between Carlsbad and Poseidon was executed on October 5, 2009
Agreement of Term Sheet between the Water Authority and Poseidon Resources (July 2010).
The Water Authority approved the Term Sheet at its July 2010 Board Meeting. The Term
Sheet outlines the terms and conditions of a future Water Purchase Agreement with Poseidon
and allocates the resources to prepare the draft Water Purchase Agreement.
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Federal, State, and Local Permits/Approvals
Carlsbad Desalination Project Final EIR
The City of Carlsbad, acting as lead agency for Carlsbad Seawater Desalination Plant and
appurtenant facilities proposed by Poseidon (the “Project”) prepared an Environmental Impact
Report for the Project in compliance with the California Environmental Quality Act
(“CEQA”), which the City of Carlsbad certified on June 13, 2006.
http://www.sdcwa.org/rwfmp-peir
The City of Carlsbad prepared an Addendum to the Carlsbad EIR (“Addendum”) which was
adopted on September 15, 2009, and reflects minor and immaterial design modifications to
the Project site plan, appurtenant facilities, and water delivery pipeline network.
The environmental documents and permits are found at the following links:
http://www.carlsbad-desal.com/EIR.asp
The Water Authority, as a Responsible Agency under CEQA, adopted a resolution on
November 29, 2012 approving a Second Addendum to the Carlsbad Precise Development
Plan and Desalination Plant Final EIR and First Addendum that evaluates the environmental
impacts of several proposed facility modifications that are necessary to allow for operational
flexibility and efficiency in receiving and delivering desalination product water. These
modifications include: a realignment of a portion of the approved desalination pipeline, the
addition of chemical injection at the approved San Marcos Aqueduct Connection site, the
relining of a portion of Pipeline 3, the addition of a pipeline and expanded flow control
facility at Twin Oaks Valley Water Treatment Plant and a replacement of the San Marcos
Vent on Pipeline 4. Impacts associated with the proposed modifications would not result in a
new significant impact or substantial increase in the severity of impacts previously evaluated
in the Carlsbad FEIR or the First Addendum. There are no substantial changes to the
circumstances under which the project will be undertaken, and no new information of
substantial importance that was not known and could not have been known when the FEIR
was certified and the First Addendum was approved, and that have since been identified.
Therefore, the Second Addendum satisfies the CEQA requirements for the proposed project
modifications.
Regional Water Facilities Master Plan EIR
On November 20, 2003, the Water Authority Board of Directors adopted Resolution No.
2003-34 certifying the Final Program Environmental Impact Report (State Clearinghouse No.
2003021052) for the Water Authority’s Regional Water Facilities Master Plan Project (the
“Master Plan EIR”), which evaluated, among other things, potential growth inducing impacts
associated with new water supplies to the region including, but not limited to, up to 150
million gallons per day (“MGD”) of new supplies from seawater desalination. This
certification included a 50 MGD plant located in the City of Carlsbad.
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The environmental documents and permits are found at the following links:
http://www.sdcwa.org/rwfmp-peir
Sub regional Natural Community Conservation Plan/Habitat Conservation Plan (NCCP/HCP)
On December 8, 2010, the Board adopted Resolution No. 2010-18 certifying a Final
environmental Impact Report/Environmental Impact Statement for the San Diego County
Water Authority Subregional Natural Community Conservation Plan/Habitat Conservation
Plan (State Clearinghouse No. 2003121012) (the “Habitat Conservation Plan EIR/EIS”),
which Plan was implemented on December 28, 201.
The environmental documents and permits are found at the following links:
http://www.sdcwa.org/nccp-hcp
Twin Oaks Valley Water Treatment Plant EIR
On September 8, 2005, the Board adopted Resolution No. 2005-31 certifying a Final
Environmental Impact Report for the Twin Oaks Valley Water Treatment Plant Project (State
Clearinghouse No. 20040071034) (the “Twin Oaks EIR”), which project was constructed as a
100 MGD submerged membrane water treatment facility, including treated water holding
tanks and distribution pipelines and other facilities, consistent with the conditions and
mitigation measures included in the Twin Oaks EIR.
http://www.sdcwa.org/twin-oaks-valley-treatment-plant-final-eir
2010 Urban Water Management Plan
http://www.sdcwa.org/2010-urban-water-management-plan
Drinking Water Permit (October 2006). The California Department of Health Services
approved the Conditional Drinking Water Permit on October 19, 2006.
Coastal Development Permit
The Project is fully permitted, with the California Coastal Commission issuing the following
permits: Coastal Development Permit No. E-06-013, Energy Minimization and Greenhouse
Gas Reduction Plan (December 2008), Marine Life Mitigation Plan (December 2008),
Erosion Control Plan (November 2009), Landscaping Plan (September 2009), Lighting Plan
(August 2009), Construction Plan (September 2009), and Water Pollution Control Plan
(September 2009); the California Department of Public Health issuing Conceptual Approval
Letter dated October 19, 2006; the California Regional Water Quality Control Board issuing
NPDES Permit No. CA0109223 and Notice of Intent to Discharge for Storm Water
Associated with Construction Activities (WDID #9 37C361181); the City of Carlsbad issuing
Redevelopment Permit RP 05-12(A), Specific Plan 144 with Amendment 144(J) SP 144(J),
Habitat Management Plan Permit Amendment HMP 05-08(A), Precise Development Plan
PDP 00-02(B), Mitigation Monitoring and Reporting Program for EIR 03-05(A),
Development Agreement DA 05-01(A), Standard Urban Storm Water Mitigation Program
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(September 2009), and Coastal Development Permit 04-41; the State of California State
Lands Commission issuing an Amendment of Lease PRC 8727.1 (August 2008).
The environmental documents and permits are found at the following links:
http://www.sdcwa.org/carlsbad-desalination-project-approved-permits-and-plans
State Lands Commission Lease Application (Amendment of Lease PRC 8727.1 August
2008). Amends lease of land by Cabrillo Power I LLC (Cabrillo) from the State Lands
Commission for the lands where the project will be constructed. Cabrillo and Poseidon
entered into agreement on July 1, 2003, authorizing Poseidon to use those lands to construct
the project.
6.2.2 Water Authority Capital Improvement Program and Financial
Information
The Water Authority’s Capital Improvement Program (CIP) can trace its beginnings to a
report approved by the Board in 1989 entitled, The Water Distribution Plan, and a Capital
Improvement Program through the Year 2010. The Water Distribution Plan included ten
projects designed to increase the capacity of the aqueduct system, increase the yield from
existing water treatment plants, obtain additional supplies from MWD, and increase the
reliability and flexibility of the aqueduct system. Since that time the Water Authority has
made numerous additions to the list of projects included in its CIP as the region’s
infrastructure needs and water supply outlook have changed.
The current list of projects included in the CIP is based on the results of planning studies,
including the 2005 UWMP and the 2002 Regional Water Facilities Master Plan. These CIP
projects, which are most recently described in the Water Authority’s Adopted Multi-Year
Budget, include projects valued at $3.50 billion. These CIP projects are designed to meet
projected water supply and delivery needs of the member agencies through 2035. The
projects include a mix of new facilities that will add capacity to existing conveyance, storage,
and treatment facilities, as well as repair and replace aging infrastructure:
• Asset Management – The primary components of the asset management projects
include relining and replacing existing pipelines and updating and replacing metering
facilities.
• New Facilities – These projects will expand the capacity of the aqueduct system,
complete the projects required under the Quantification Settlement Agreement (QSA),
and evaluate new supply opportunities.
• Emergency Storage Project – Projects remaining to be completed under the ongoing
ESP include the San Vicente Dam Raise, the Lake Hodges projects, and a new pump
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station to extend ESP supplies to the northern reaches of the Water Authority service
area.
• Other Projects – This category includes out-of-region groundwater storage, increased
local water treatment plant capacity, and projects that mitigate environmental impacts
of the CIP.
The Water Authority Board of Directors is provided a semi-annual and annual report on the
status of development of the CIP projects. As described in the Water Authority’s biennial
budget, a combination of long and short term debt and cash (pay-as-you-go) will provide
funding for capital improvements. Additional information is included in the Water
Authority’s biennial budget, which also contains selected financial information and
summarizes the Water Authority’s investment policy.
6.3 Otay Water District
The Otay Water District WRMP Update and the 2010 UWMP contain comparisons of
projected supply and demands through the year 2035. Projected potable water resources to
meet planned demands as documented were planned to be supplied entirely with imported
water received from the Water Authority. Recycled water resources to meet projected
demands are planned to be supplied from local wastewater treatment plants. The OWD
currently has no local supply of raw water, potable water, or groundwater resources.
The development and/or acquisition of potential groundwater, recycled water market
expansion, and seawater desalination supplies by the OWD have evolved and are planned to
occur in response to the regional water supply issues. These water supply projects are in
addition to those identified as sustainable supplies in the current Water Authority and MWD
UWMP, IRP, Master Plans, and other planning documents. These new additional water
supply projects are not currently developed and are in various stages of the planning process.
These local and regional water supply projects will allow for less reliance upon imported
water and are considered a new water supply resource for the OWD.
The OWD expansion of the market areas for the use of recycled water within the watersheds
upstream of the Sweetwater Reservoir and the Lower Otay Reservoir, and Otay Mesa will
increase recycled water use and thus require less dependence on imported water for irrigation
purposes.
The supply forecasts contained within this WSA Report do consider development and/or
acquisition of potential groundwater, recycled water market expansion, and seawater
desalination supplies by the OWD.
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6.3.1 Availability of Sufficient Supplies and Plans for Acquiring
Additional Supplies
The availability of sufficient potable water supplies and plans for acquiring additional potable
water supplies to serve existing and future demands of the OWD is founded upon the
preceding discussions regarding MWD’s and the Water Authority’s water supply resources
and water supplies to be acquired by the OWD. Historic imported water deliveries from the
Water Authority to OWD and recycled water deliveries from the OWD Ralph W. Chapman
Water Reclamation Facility (RWCWRF) are shown in Table 6. Since the year 2000 through
mid May 2007, recycled water demand has exceeded the recycled water supply capability
typically in the summer months. The RWCWRF is limited to a maximum production of
about 1,300 acre-feet per year. The recycled water supply shortfall had been met by
supplementing with potable water into the recycled water storage system as needed by adding
potable water supplied by the Water Authority. On May 18, 2007 an additional source of
recycled water supply from the City of San Diego’s South Bay Water Reclamation Plant
(SBWRP) became available. The supply of recycled water from the SBWRP is a result of
essentially completing construction and commencement of operations of the transmission,
storage, and pump station systems necessary to link the SBWRP recycled water supply source
to the existing OWD recycled water system.
Table 6
Otay Water District
Historic Imported and Local Water Supplies
Calendar
Year
Imported Water
(acre-feet)
Recycled Water
(acre-feet)
Total
(acre-feet)
1980 12,558 0 12,558
1985 14,529 0 14,529
1990 23,200 0 23,200
1995 20,922 614 21,536
2000 29,901 948 30,849
2005 37,678 1,227 38,905
2010 29,270 4,090 33,270
2011 30,777 3,776 34,553
Source: Otay Water District operational records.
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6.3.1.1 Imported and Regional Supplies
The availability of sufficient imported and regional potable water supplies to serve existing
and planned uses within OWD is demonstrated in the above discussion on MWD and the
Water Authority’s water supply reliability. The County Water Authority Act, Section 5
subdivision 11, states that the Water Authority “as far as practicable, shall provide each of its
member agencies with adequate supplies of water to meet their expanding and increasing
needs.” The Water Authority provides between 75 to 95 percent of the total supplies used by
its 24 member agencies, depending on local weather and supply conditions. In calendar year
2010 the supply to OWD was 29,270 acre-feet of supply from the Water Authority. An
additional 4,090 ac-ft of recycled water was provided from the City of San Diego and from
OWD’s Ralph W. Chapman Water Reclamation Facility. The total baseline demand for
potable water within the OWD is expected to increase to about 77,171 acre-feet by 2035 as
per the Otay Water District 2010 UWMP.
Potable Water System Facilities
The OWD continues to pursue diversification of its water supply resources to increase
reliability and flexibility. The OWD also continues to plan, design, and construct potable
water system facilities to obtain these supplies and to distribute potable water to meet
customer demands. The OWD has successfully negotiated two water supply diversification
agreements that enhance reliability and flexibility, which are briefly described as follows.
• The OWD entered into an agreement with the City of San Diego, known as the Otay
Water Treatment Plant (WTP) Agreement. The Otay WTP Agreement provides for raw
water purchase from the Water Authority and treatment by the City of San Diego at their
Otay WTP for delivery to OWD. The supply system link to implement the Otay WTP
Agreement to access the regions raw water supply system and the local water treatment
plant became fully operational in August 2005. This supply link consists of the typical
storage, transmission, pumping, flow measurement, and appurtenances to receive and
transport the treated water to the OWD system. The City of San Diego obligation to
supply 10 mgd of treated water under the Otay WTP Agreement is contingent upon there
being available 10 mgd of surplus treatment capacity in the Otay WTP until such time as
OWD pays the City of San Diego to expand the Otay WTP to meet the OWD future
needs. In the event that the City of San Diego’s surplus is projected to be less than 10
mgd the City of San Diego will consider and not unreasonably refuse the expansion of
the Otay WTP to meet the OWD future needs. The Otay WTP existing rated capacity is
40 mgd with an actual effective capacity of approximately 34 mgd. The City of San
Diego’s typical demand for treated water from the Otay WTP is approximately 20 mgd.
It is at the City of San Diego’s discretion to utilize either imported raw water delivered
by the Water Authority Pipeline No. 3 or local water stored in Lower Otay Reservoir for
treatment to supply the OWD demand.
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• The OWD entered into an agreement with the Water Authority, known as the East
County Regional Treated Water Improvement Program (ECRTWIP Agreement). The
ECRTWIP Agreement provides for transmission of raw water to the Helix WD R. M.
Levy WTP for treatment and delivery to OWD. The supply system link to implement the
ECRTWIP Agreement is complete allowing access to the regions raw water supply
system and the local water treatment plant. This supply link consists of the typical
transmission, pumping, storage, flow control, and appurtenances to receive and transport
the potable water from the R. M. Levy WTP to OWD. The OWD is required to take a
minimum of 10,000 acre-feet per year of treated water from the R.M. Levy WTP
supplied from the regions raw water system.
Cost and Financing
The capital improvement costs associated with water supply and delivery are financed
through the OWD water meter capacity fee and user rate structures. The OWD potable water
sales revenue are used to pay for the wholesale cost of the treated water supply and the
operating and maintenance expenses of the potable water system facilities.
Written Agreements, Contracts, or Other Proof
The supply and cost associated with deliveries of treated water from the Otay WTP and the R.M.
Levy WTP is based on the following documents.
Agreement for the Purchase of Treated Water from the Otay Water Treatment Plant between the
City of San Diego and the Otay Water District. The OWD entered into an agreement dated
January 11, 1999 with the City of San Diego that provides for 10 mgd of surplus treated water to
the OWD from the existing Otay WTP capacity. The agreement allows for the purchase of
treated water on an as available basis from the Otay WTP. The OWD pays the Water Authority
at the prevailing raw water rate for raw water and pays the City of San Diego at a rate equal to
the actual cost of treatment to potable water standards.
Agreement between the San Diego County Water Authority and Otay Water District Regarding
Implementation of the East County Regional Treated Water Improvement Program. The
ECRTWIP Agreement requires the purchase of at least 10,000 acre-feet per year of potable water
from the Helix WD R.M. Levy WTP at the prevailing Water Authority treated water rate. The
ECRTWIP Agreement is dated April 27, 2006.
Agreement between the San Diego County Water Authority and Otay Water District for Design,
Construction, Operation, and Maintenance of the Otay 14 Flow Control Facility Modification.
The OWD entered into the Otay 14 Flow Control Facility Modification Agreement dated
January 24, 2007 with the Water Authority to increase the physical capacity of the Otay 14 Flow
Control Facility. The Water Authority and OWD shared the capital cost to expand its capacity
from 8 mgd to 16 mgd.
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Federal, State, and Local Permits/Approvals
The OWD acquired all the permits for the construction of the pipeline and pump station
associated with the Otay WTP supply source and for the 640-1 and 640-2 water storage
reservoirs project associated with the ECRTWIP Agreement through the typical planning,
environmental approval, design, and construction processes.
The transmission main project constructed about 26,000 feet of a 36-inch diameter steel
pipeline from the Otay 14 Flow Control Facility to the 640-1 and 640-2 Reservoirs project.
The Otay 14 Flow Control Facility modification increased the capacity of the existing systems
from 8 mgd to 16 mgd. CEQA documentation is complete for both projects. Construction of
both of these projects was completed October 2010.
The City of San Diego and the Helix Water District are required to meet all applicable federal,
state, and local health and water quality requirements for the potable water produced at the
Otay WTP and the R.M. Levy WTP respectively.
6.3.1.2 Recycled Water Supplies
Wastewater collection, treatment, and disposal services provided by the OWD is limited to a
relatively small area within what is known as the Jamacha Basin, located within the Middle
Sweetwater River Basin watershed upstream of the Sweetwater Reservoir and downstream of
Loveland Reservoir. Water recycling is defined as the treatment and disinfection of
municipal wastewater to provide a water supply suitable for non-potable reuse. The OWD
owns and operates the Ralph W. Chapman Water Reclamation Facility, which produces
recycled water treated to a tertiary level for landscape irrigation purposes. The recycled water
market area of the OWD is located primarily within the eastern area of the City of Chula Vista
and on the Otay Mesa. The OWD distributes recycled water to a substantial market area that
includes but is not limited to the U.S. Olympic Training Center, the Eastlake Golf Course,
Otay Ranch, and other development projects.
The OWD projects that annual average demands for recycled water will increase to 8,000
acre-feet per year by 2035. About 1,300 acre-feet per year of supply is generated by the
RWCWRF, with the remainder planned to be supplied to OWD by the City of San Diego’s
SBWRP.
North District Recycled Water Concept
The OWD is a recognized leader in the use of recycled water for irrigation and other
commercial uses. The OWD continues the quest to investigate all viable opportunities to
expand the successful recycled water program into areas that are not currently served. One of
these areas is in the portion of the service area designated as the North District, located within
the Middle Sweetwater River Basin watershed upstream of the Sweetwater River. The close
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proximity of the recycled water markets in the North District to the OWD source of recycled
water, the RWCWRF, means that the distribution system to serve this area could be
constructed relatively cost effectively. This makes the North District a logical location for the
expansion of the OWD recycled water system and market area.
The purpose of the North District Recycled Water System Development Project, Phase I
Concept Study, is to identify the feasibility of using recycled water in the North District and
to investigate and assess any limitations or constraints to its use. The Phase I study
components of the North District Recycled Water Concept encompassed the preparation of
six technical memorandums including the project definition, a discussion of the regulatory
process, a discussion of the protection of the watershed that would be affected by recycled
water use in the North District, identification of stakeholders, public outreach, and an
implementation plan.
Several opportunities that could be realized with the implementation of the use of recycled
water in the North District were identified. These include a reduction of demand on the
potable water system and maximizing recycled water resources which in turn minimizes
treated wastewater discharges to the local ocean outfall. Other opportunities are a possible
partnership with Sweetwater Authority to monitor any benefits and impacts of increased
recycled water use in the watershed and stakeholder outreach to resolve any water quality
concerns and to retain consumer confidence. Also identified were two major constraints
associated with the North District Recycled Water System Development Project. One
constraint is the water quality objectives for the Middle Sweetwater Basin that will affect the
effluent limitations for the recycled water produced at the RWCWRF. At this time, the
effluent limit that is of concern is total nitrogen. An examination as to how the treatment
process might be modified to enhance nitrogen removal and a design is underway to remedy
the total nitrogen issue. The other major constraint is the cost of the infrastructure needed to
convey and store recycled water in the North District. These costs are estimated to be in the
range of $14 to $15 million dollars.
There are two additional phases proposed for the North District Recycled Water System
Development Project. Phase II would include further investigation of the issues identified in
Phase I as requiring further study. These include stakeholder outreach, regulatory issues, and
facility planning. The third phase of the effort would include the facility planning, permitting,
environmental compliance, design, and construction of the improvements necessary for
delivery of recycled water to the North District markets.
The estimated amount of imported water saved at full implementation of the North District
Recycled Water System Development Project is 1,200 acre-feet per year. This saved
imported water could then be used to offset new potable water demands.
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Recycled Water System Facilities
The OWD has and continues to construct recycled water storage, pumping, transmission, and
distribution facilities to meet projected recycled water market demands. For nearly 20 years,
millions of dollars of capital improvements have been constructed. The supply link consisting
of a transmission main, storage reservoir, and a pump station to receive and transport the
recycled water from the City of San Diego’s SBWRP are complete and recycled water
deliveries began on May 18, 2007.
Cost and Financing
The capital improvement costs associated with the recycled water supply and distribution
systems are financed through the OWD water meter capacity fee and user rate structures. The
OWD recycled water sales revenue, along with MWD and the Water Authority’s recycled
water sales incentive programs are used to help offset the costs for the wholesale purchase and
production of the recycled water supply, the operating and maintenance expenses, and the
capital costs of the recycled water system facilities.
Written Agreements, Contracts, or Other Proof
The supply and cost associated with deliveries of recycled water from the SBWRP is based on
the following document.
Agreement between the Otay Water District and the City of San Diego for Purchase of
Reclaimed Water from the South Bay Water Reclamation Plant. The agreement provides for the
purchase of at least 6,721 acre-feet per year of recycled water from the SBWRP at an initial price
of $350 per acre-foot. The Otay Water District Board of Directors approved the final agreement
on June 4, 2003 and the San Diego City Council approved the final agreement on October 20,
2003.
Federal, State, and Local Permits/Approvals
The OWD has in place an agreement with MWD for their recycled water sales incentive
program for supplies from the RWCWRF and the SBWRP. Also, the OWD has in place an
agreement with the Water Authority for their recycled water sales incentive program for
supplies from the RWCWRF and the SBWRP. The Water Authority sales incentive
agreement was approved by Water Authority on July 26, 2007 and by OWD on August 1,
2007. All permits for the construction of the recycled water facilities to receive, store, and
pump the SBWRP supply have been acquired through the typical planning, environmental
approval, design, and construction processes.
The California Regional Water Quality Control Board San Diego Region (RWQCB) “Master
Reclamation Permit for Otay Water District Ralph W. Chapman Reclamation Facility” was
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adopted on May 9, 2007 (Order No. R9-2007-0038). This order establishes master
reclamation requirements for the production, distribution, and use of recycled water in the
OWD service area. The order includes the use of tertiary treated water produced and received
from the City of San Diego‘s SBWRP. Recycled water received from and produced by the
SBWRP is regulated by Regional Board Order No. 2000-203 and addenda. The City of San
Diego is required to meet all applicable federal, state, and local health and water quality
requirements for the recycled water produced at the SBWRP and delivered to OWD in
conformance with Order No. 2000-203.
6.3.1.3 Potential Groundwater Supplies
The Otay Water District WRMP Update, 2010 UWMP, and the Otay Water District March
2007 Integrated Water Resources Plan (2007 IRP) all contain a description of the
development of potential groundwater supplies. Over the past several years, OWD has studied
numerous potential groundwater supply options that have shown, through groundwater
monitoring well activities, poor quality water and/or insufficient yield from the basins at a
cost effective level. The OWD has developed capital improvement program projects to
continue the quest to develop potential groundwater resources. Local OWD groundwater
supply development is currently considered as a viable water supply resource to meet
projected demands.
The development and/or acquisition of potential groundwater supply projects by the OWD
have evolved and have been resurrected in response to the regional water supply issues related
to water source supply conditions. Local ground water supply projects will allow for less
reliance upon imported water, achieve a level of independence of the regional wholesale
water agencies, and diversify the OWD water supply portfolio consistent the Otay Water
District 2007 IRP.
In recognition of the need to develop sufficient alternative water supplies, the OWD has taken
the appropriate next steps towards development of production groundwater well projects.
There are three groundwater well projects that the OWD is actively pursuing to develop as
new local water supplies. They are known as the Middle Sweetwater River Basin
Groundwater Well, the Otay Mesa Lot 7 Groundwater Well, and the Rancho del Rey
Groundwater Well projects.
Middle Sweetwater River Basin Groundwater Well
The Middle Sweetwater River Basin Groundwater Well is an additional water supply project
that was thoroughly studied and documented in the 1990s. The Middle Sweetwater River
Basin is located within the Sweetwater River watershed and that reach of the river extends
from Sweetwater Reservoir to the upstream Loveland Reservoir. The next step in
development of the Middle Sweetwater River Basin Groundwater Well is the implementation
Otay Water District
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of a pilot well project. The ultimate objective of the OWD is to develop a groundwater well
production system within the Middle Sweetwater River Basin capable of producing a
sustainable yield of potable water as a local supply.
The purpose of the Middle Sweetwater River Basin Groundwater Well Pilot project is to
identify the feasibility of developing a groundwater resource production system and then
determine and assess any limitations or constraints that may arise. The Middle Sweetwater
River Basin Groundwater Well Pilot Project will accomplish six primary goals:
• Update project setting
• Update applicable project alternatives analysis
• Prepare groundwater well pilot project implementation plan
• Construct and test pilot monitoring and extraction wells
• Provide recommendations regarding costs and feasibility to develop a groundwater
well production system within the Middle Sweetwater River Basin capable of
producing a sustainable yield of potable water
• Prepare groundwater well production project implementation plan and scope of work
The groundwater conjunctive use concept is described as the extraction of the quantity of
water from the groundwater basin that was placed there by customers of the Otay Water
District, Helix Water District, and Padre Dam Municipal Water District by means of their use
of imported treated water that contributed to the overall volume of groundwater within the
basin. An estimated quantity was developed to be approximately 12.5 percent of the total
consumption of the OWD customers within that basin, as measured by water meters. In the
1994-1995 period, the quantity of water that was returned to the groundwater basin by OWD
customers was estimated to be 810 acre-feet per year. Currently, that 12.5 percent quantity
could be on the order of 1,000 acre-feet per year. A future scope of work will need to
addresses this concept while considering further development of the groundwater basin as an
additional supply resource. If it is deemed that a Middle Sweetwater River Basin
Groundwater Well Production Project is viable then the consultant will develop and provide a
groundwater well production project implementation plan, cost estimate, and related scope of
work.
Further development of the groundwater basin to enhance the total groundwater production
could be accomplished by the OWD by means of additional extraction of water from the basin
that is placed there by means of either injection and/or spreading basins using imported
untreated water as the resource supply. The existing La Mesa Sweetwater Extension Pipeline,
owned by the Water Authority, once converted to an untreated water delivery system, could
be the conveyance system to transport untreated water for groundwater recharge in support of
this conjunctive use concept. These two distinct water resource supply conjunctive use
concepts will be addressed so they may coexist and to allow for their development as separate
phases.
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The scope of work to complete Middle Sweetwater River Basin Groundwater Well Pilot
Project consists of many major tasks and is to address the groundwater supply concepts
outlined above. It is anticipated that the cost for the entire scope of work, will be on the order
of $2,000,000, which includes a contingency and may take up to one and a half years to
complete.
The primary desired outcome of the Middle Sweetwater River Basin Groundwater Well Pilot
Project is for the engineering consultant to determine and make recommendations if it is
financially prudent and physically feasible to develop a Phase I groundwater well production
system within the Middle Sweetwater River Basin capable of producing a sustainable yield of
up to 1,500 ac-ft/yr of potable water for the OWD. If it is deemed that a Middle Sweetwater
River Basin Groundwater Well Production Project is viable then the consultant will develop
and provide a groundwater well production project implementation plan and related scope of
work.
Otay Mesa Lot 7 Groundwater Well
In early 2001 the OWD was approached by a landowner representative about possible interest
in purchasing an existing well or alternatively, acquiring groundwater supplied from the well
located on Otay Mesa. The landowner, National Enterprises, Inc., reportedly stated that the
well could produce 3,200 acre-feet per year with little or no treatment required prior to
introducing the water into the OWD potable water system or alternatively, the recycled water
system. In March 2001 authorization to proceed with testing of the Otay Mesa Lot 7
Groundwater Well was obtained and the OWD proceeded with the investigation of this
potential groundwater supply opportunity.
The May 2001 Geoscience Support Services, Inc. completed for the OWD the preparation of
a report entitled, “Otay Mesa Lot 7 Well Investigation,” to assess the Otay Mesa Lot 7 Well.
The scope of work included a geohydrologic evaluation of the well, analyses of the water
quality samples, management and review of the well video log, and documentation of well
pump testing. The primary findings, as documented in the report, formed the basis of the
following recommendations:
• For the existing well to be use as a potable water supply resource, a sanitary seal must
be installed in accordance with the CDPH guidelines.
• Drawdown in the well must be limited to avoid the possibility of collapsing the casing.
• Recover from drawdown from pumping is slow and extraction would need to be
terminated for up to 2 days to allow for groundwater level recovery.
• The well water would need to be treated and/or blended with potable water prior to
introduction into the potable water distribution system.
The existing Otay Mesa Lot 7 Well, based upon the above findings, was determined not to be
a reliable municipal supply of potable water and that better water quality and quantity perhaps
could be discovered deeper or at an alternative location within the San Diego Formation.
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The OWD may still continue to pursue the Otay Mesa groundwater well opportunity with due
consideration of the recommendations of the existing report. Based on the recommendations
of the investigation report, a groundwater well production facility at Otay Mesa Lot 7 could
realistically extract approximately 300 acre-feet per year.
Rancho del Rey Groundwater Well
In 1991, the McMillin Development Company drilled the Rancho del Rey Groundwater Well
to augment grading water supplies for their Rancho del Rey development projects. Although
the well was considered a “good producer,” little was known regarding its water quality and
sustainable yield because the water was used solely for earthwork (i.e. dust control and soil
compaction). The well was drilled to 865 feet, with a finished depth of 830 feet and produced
approximately 400 acre-feet per year of low quality water for four years until its use was
discontinued in April 1995 when the well was no longer needed. McMillin notified the OWD
of its intent to sell off the groundwater well asset.
In 1997, the OWD purchased an existing 7-inch well and the surrounding property on Rancho
del Rey Parkway from the McMillin Company with the intent to develop it as a source of
potable water. Treatment was required to remove salts and boron, among other constituents,
using reverse osmosis membranes and ion exchange.
In 2000, having received proposals for the design and construction of a reverse osmosis
treatment facility that far exceeded the allocated budget, the Board of Directors instructed
staff to suspend the project until such time as it became economically viable.
In January 2010, citing the rising cost of imported water and the OWD's interest in securing
its own water source for long-term supply reliability, the Board authorized Phase 1 for drilling
and development of the Rancho del Rey Well.
On March 3, 2010, the Board adopted the Mitigated Negative Declaration for this project and
a Notice of Determination was filed with the County of San Diego on March 5, 2010. In
September 2010, a new 12-inch production well was drilled to a depth of 900 feet through the
groundwater formation and into fractured bedrock. Testing showed the long-term yield of the
new well to be 450 gpm, higher than previous studies had estimated. Separation Processes,
Inc. (SPI), a highly qualified membrane treatment firm, was hired to conduct a detailed
economic feasibility study to confirm that the annualized unit cost of the new water source
was economically competitive with other sources. The economic study estimated the unit
cost of water to be $1, 500 to $2,000 per acre-feet for an alternative that utilizes a seawater
membrane for treating both salts and boron. When compared with the current imported
treated water rate from the Water Authority, and with the knowledge that this rate will
continually increase as MWD and the Water Authority raise their rates, the Rancho del Rey
Well project appears to be economically viable.
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The OWD is continuing to pursue the Rancho del Rey groundwater well opportunity with due
consideration of the recommendations of the existing reports and plans to develop a
groundwater well production facility to extract approximately 500 acre-feet per year. For
water planning purposes, production of groundwater from the Rancho del Rey well is
considered “additional planned” for local supplies. During preparation of this 2010 UWMP,
the OWD has contracted for design services for the wellhead treatment facilities.
6.3.1.4 Otay Water District Desalination Project
The OWD is currently investigating the feasibility of purchasing desalinated water from a
seawater reverse osmosis plant that is planned to be located in Rosarito, Mexico, known as the
Otay Mesa Desalinated Water Conveyance System (Desalination) project. The treatment
facility is intended to be designed, constructed, and operated in Mexico by a third party. The
OWD’s draft Desalination Feasibility Study, prepared in 2008, discusses the likely issues to
be considered in terms of water treatment and monitoring, potential conveyance options
within the United States from the international border to potential delivery points, and
environmental, institutional, and permitting considerations for the OWD to import the
Desalination project product water as a new local water supply resource.
While the treatment facility for the Desalination project will likely not be designed or
operated by the OWD as the lead agency, it is important that the OWD maintain involvement
with the planning, design, and construction of the facility to ensure that the implemented
processes provide a product water of acceptable quality for distribution and use within the
OWD’s system as well as in other regional agencies’ systems that may use the product water,
i.e. City of San Diego, the Water Authority, etc. A seawater reverse osmosis treatment plant
removes constituents of concern from the seawater, producing a water quality that far exceeds
established United States and California drinking water regulations for most parameters,
however, a two-pass treatment system may be required to meet acceptable concentrations of
boron and chlorides, similar to the levels seen within the existing OWD supply sources. The
Desalination Feasibility Study addresses product water quality that is considered acceptable
for public health and distribution.
The OWD, or any other potential participating agencies, will be required to get approval from
the CDPH in order to use the desalinated seawater as a water source. Several alternative
approaches are identified for getting this approval. These alternatives vary in their cost and
their likelihood of meeting CDPH approval.
The Rosarito Desalination Facility Conveyance and Disinfection System Project report
addresses two supply targets for the desalinated water (i.e. local and regional). The local
alternative assumes that only OWD would participate and receive desalinated water, while the
regional alternative assumes that other regional and/or local agencies would also participated
in the Rosarito project.
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On November 3, 2010, the OWD authorized the General Manager to enter into an agreement
with AECOM for the engineering design, environmental documentation, and the permitting
for the construction of the conveyance pipeline, pump station, and disinfection facility to be
constructed within the OWD. The supply target is assumed to be 50 mgd while the ultimate
capacity of the plant will be 100 mgd.
The OWD is proceeding with negotiations among the parties to establish water supply
resource acquisition terms through development of a Principles of Understanding document.
6.3.2 Otay Water District Capital Improvement Program
The OWD plans, designs, constructs, and operates water system facilities to acquire sufficient
supplies and to meet projected ultimate demands placed upon the potable and recycled water
systems. In addition, the OWD forecasts needs and plans for water supply requirements to meet
projected demands at ultimate build out. The necessary water facilities and water supply projects
are implemented and constructed when development activities proceed and require service to
achieve timely and adequate cost effective water service.
New water facilities that are required to accommodate the forecasted growth within the entire
OWD service area are defined and described within the Otay Water District WRMP Update.
These facilities are incorporated into the annual OWD Six Year Capital Improvement Program
(CIP) for implementation when required to support development activities. As major
development plans are formulated and proceed through the land use jurisdictional agency
approval processes, OWD prepares water system requirements specifically for the proposed
development project consistent with the Otay Water District WRMP Update. These
requirements document, define, and describe all the potable water and recycled water system
facilities to be constructed to provide an acceptable and adequate level of service to the proposed
land uses, as well as the financial responsibility of the facilities required for service. The OWD
funds the facilities identified as CIP projects. Established water meter capacity fees and user
rates are collected to fund the CIP project facilities. The developer funds all other required water
system facilities to provide water service to their project.
Section 7 – Conclusion: Availability of Sufficient Supplies
The Otay Plaza Project is currently located within the jurisdictions of the OWD, Water
Authority, and MWD. To obtain permanent imported water supply service, land areas are
required to be within the jurisdictions of the OWD, Water Authority, and MWD to utilize
imported water supply.
The Water Authority and MWD have an established process that ensures supplies are being
planned to meet future growth. Any annexations and revisions to established land use plans
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are captured in the San Diego Association of Governments (SANDAG) updated forecasts for
land use planning, demographics, and economic projections. SANDAG serves as the
regional, intergovernmental planning agency that develops and provides forecast information.
The Water Authority and MWD update their demand forecasts and supply needs based on the
most recent SANDAG forecast approximately every five years to coincide with preparation of
their urban water management plans. Prior to the next forecast update, local jurisdictions with
land use authority may require water supply assessment and/or verification reports for
proposed land developments that are not within the OWD, Water Authority, or MWD
jurisdictions (i.e. pending or proposed annexations) or that have revised land use plans with
either lower or higher development intensities than reflected in the existing growth forecasts.
Proposed land areas with pending or proposed annexations, or revised land use plans,
typically result in creating higher demand and supply requirements than previously
anticipated. The OWD, Water Authority, and MWD next demand forecast and supply
requirements and associated planning documents would then capture any increase or decrease
in demands and required supplies as a result of annexations or revised land use planning
decisions.
MWD’s Integrated Resources Plan (IRP) identifies a mix of resources (imported and local)
that, when implemented, will provide 100 percent reliability for full-service demands through
the attainment of regional targets set for conservation, local supplies, State Water Project
supplies, Colorado River supplies, groundwater banking, and water transfers. The 2010
update to the IRP includes a planning buffer supply intended to mitigate against the risks
associated with implementation of local and imported supply programs and for the risk that
future demands could be higher than projected. The planning buffer identifies an additional
increment of water that could potentially be developed when needed and if other supplies are
not fully implemented as planned. As part of implementation of the planning buffer, MWD
periodically evaluates supply development, supply conditions, and projected demands to
ensure that the region is not under or over developing supplies. Managed properly, the
planning buffer will help ensure that the southern California region, including San Diego
County, will have adequate water supplies to meet long-term future demands.
In Section ES-5 of their 2010 RUWMP, MWD states that MWD has supply capacities that
would be sufficient to meet expected demands from 2015 through 2035. MWD has plans for
supply implementation and continued development of a diversified resource mix including
programs in the Colorado River Aqueduct, State Water Project, Central Valley Transfers,
local resource projects, and in-region storage that enables the region to meet its water supply
needs. MWD’s 2010 RUWMP identifies potential reserve supplies in the supply capability
analysis (Tables 2-9, 2-10, and 2-11), which could be available to meet the unanticipated
demands.
The County Water Authority Act, Section 5 subdivision 11, states that the Water Authority
“as far as practicable, shall provide each of its member agencies with adequate supplies of
water to meet their expanding and increasing needs.”
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As part of preparation of a written water supply assessment report, an agency’s shortage
contingency analysis should be considered in determining sufficiency of supply. Section 11
of the Water Authority’s 2010 Updated UWMP contains a detailed shortage contingency
analysis that addresses a regional catastrophic shortage situation and drought management.
The analysis demonstrates that the Water Authority and its member agencies, through the
Emergency Response Plan, Emergency Storage Project, Carlsbad Desalination Project, and
Drought Management Plan (DMP) are taking actions to prepare for and appropriately handle
an interruption of water supplies. The DMP, adopted in May 2006, provides the Water
Authority and its member agencies with a series of potential actions to take when faced with a
shortage of imported water supplies from MWD due to prolonged drought or other supply
shortfall conditions. The actions will help the region avoid or minimize the impacts of
shortages and ensure an equitable allocation of supplies.
The WSA Report identifies and describes the processes by which water demand projections
for the proposed Otay Plaza Project will be fully included in the water demand and supply
forecasts of the Urban Water Management Plans and other water resources planning
documents of the Water Authority and MWD. Water supplies necessary to serve the demands
of the proposed Otay Plaza Project, along with existing and other projected future users, as
well as the actions necessary and status to develop these supplies, have been identified in the
Otay Plaza Project WSA Report and will be included in the future water supply planning
documents of the Water Authority and MWD.
This WSA Report includes, among other information, an identification of existing water
supply entitlements, water rights, water service contracts, water supply projects, or
agreements relevant to the identified water supply needs for the proposed Otay Plaza Project.
This WSA Report assesses, demonstrates, and documents that sufficient water supplies are
planned for and are intended to be available over a 20-year planning horizon, under normal
conditions and in single and multiple dry years to meet the projected demand of the proposed
Otay Plaza Project and the existing and other planned development projects to be served by
the OWD.
Table 7 presents the forecasted balance of water demands and required supplies for the OWD
service area under average or normal year conditions. The total actual demand for FY 2010
was 33,270 acre feet. The demand for FY 2010 is 5,635 acre feet lower than the demand in
FY 2005 of 38,905 acre feet. The drop in demand is a result of the unit price of water, the
conservation efforts of users as a result of the prolonged drought, and the economy.
Table 8 presents the forecasted balance of water demands and supplies for the OWD service
area under single dry year conditions. Table 8 presents the forecasted balance of water
demands and supplies for the OWD service area under multiple dry year conditions for the
three year period ending in 2018. The multiple dry year conditions for periods ending in
2023, 2028, and 2033 are provided in the Otay Water District 2010 UWMP. The projected
potable demand and supply requirements shown the Tables 7 and 8 are from the Otay Water
District 2010 UWMP adjusted to reflect the additional 75.6 acre-feet per year of potable water
Otay Water District
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Otay Plaza Project
56
demand for the Otay Plaza Project. Hot, dry weather may generate urban water demands that
are about 6.4 percent greater than normal. This percentage was utilized to generate the dry
year demands shown in Table 8. The recycled water supplies are assumed to experience no
reduction in a dry year.
Table 7
Projected Balance of Water Demands and Supplies Normal Year Conditions (acre feet)
Description FY 2015 FY 2020 FY 2025 FY 2030 FY 2035
Demands
OWD Demands 44,883 53,768 63,811 70,669 77,171
Additional Conservation Target 0 (7,447) (13,996) (17,895) (20,557)
Total Demand 44,883 46,321 49,815 52,774 56,614
Supplies
Water Authority Supply 40,483 41,321 44,015 45,974 48,614
Recycled Water Supply 4,400 5,000 5,800 6,800 8,000
Total Supply 44,883 46,321 49,815 52,774 56,614
Supply Surplus/(Deficit) 0 0 0 0 0
Table 8 presents the forecasted balance of water demands and supplies for the OWD service
area under single dry year and multiple dry year conditions as from the Otay Water District
2010 UWMP.
Table 8
Projected Balance of Water Demands and Supplies
Single Dry and Multiple Dry Year Conditions (acre feet)
Normal
Year
Single
Dry Year Multiple Dry Years
FY 2011 FY 2012 FY 2013 FY 2014 FY 2015
Demands
OWD Demands 37,176 41,566 43,614 46,385 50,291
Total Demand 37,176 41,566 43,614 46,385 50,291
Supplies
Water Authority Supply 33,268 37,535 39,460 42,108 45,891
Recycled Water Supply 3,908 4,031 4,154 4,277 4,400
Total Supply 37,176 41,566 43,614 46,385 50,291
Supply Surplus/(Deficit) 0 0 0 0 0
District Demand totals with SBX7-7 conservation target achievement plus single dry year increase as shown.
The Water Authority could implement its DMP. In this instances, the Water Authority may have to allocate supply
shortages based on it equitable allocation methodology in its DMP.
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Dry year demands assumed to generate a 6.4% increase in demand over normal conditions for
each year in addition to new demand growth.
Table 8 also presents the forecasted balance of water demands and supplies for the OWD
service area under multiple dry year conditions for the three year period ending in 2015.
In evaluating the availability of sufficient water supply, the Otay Plaza Project development
proponents will be required to participate in the development of alternative water supply
project(s). This can be achieved through payment of the New Water Supply Fee adopted by
the OWD Board in May 2010. These water supply projects are in addition to those identified
as sustainable supplies in the current Water Authority and MWD UWMP, IRP, Master Plans,
and other planning documents. These new water supply projects are in response to the
regional water supply issues related to climatological, environmental, legal, and other
challenges that impact water source supply conditions, such as the court rulings regarding the
Sacramento-San Joaquin Delta and the current ongoing western states drought conditions.
These new additional water supply projects are not currently developed and are in various
stages of the planning process. The OWD water supply development program includes but is
not limited to projects such as the Middle Sweetwater River Basin Groundwater Well project,
the North District Recycled Water Supply Concept, the OWD Desalination project, and the
Rancho del Rey Groundwater Well project. The Water Authority and MWD’s next forecasts
and supply planning documents would capture any increase in water supplies resulting from
any new water resources developed by the OWD.
The OWD acknowledges the ever-present challenge of balancing water supply with demand
and the inherent need to possess a flexible and adaptable water supply implementation
strategy that can be relied upon during normal and dry weather conditions. The responsible
regional water supply agencies have and will continue to adapt their resource plans and
strategies to meet climate, environmental, and legal challenges so that they may continue to
provide water supplies to their service areas. The regional water suppliers along with OWD
fully intend to maintain sufficient reliable supplies through the 20-year planning horizon
under normal, single, and multiple dry year conditions to meet projected demand of the Otay
Project, along with existing and other planned development projects within the OWD service
area.
This WSA Report assesses, demonstrates, and documents that sufficient water supplies are
planned for and are intended to be acquired, as well as the actions necessary and status to
develop these supplies, to meet projected water demands of the Otay Plaza Project as well as
existing and other reasonably foreseeable planned development projects within the OWD for
a 20-year planning horizon, in normal and in single and multiple dry years.
Otay Water District
Water Supply Assessment Report
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58
Source Documents
Sunroad Otay Partners, LP, E-mail Request to Initiate the Preparation of a Water Supply
Assessment for the Otay Plaza. Compliance request letter received January 7, 2013.
City of Chula Vista, “Otay Ranch General Development Plan/Sub-regional Plan, The Otay Ranch
Joint Planning Project,” October 1993 amended June 1996.
County of San Diego, “East Otay Mesa Specific Plan Area,” adopted July 27, 1994.
Otay Water District, “2008 Water Resources Master Plan Update,” dated November 2010.
Atkins and Otay Water District, “Otay Water District 2010 Urban Water Management Plan,”
June 2011.
Camp Dresser & McKee, Inc., “Otay Water District Integrated Water Resources Plan,” March
2007
San Diego County Water Authority, “Urban Water Management Plan 2010 Update,” May
2011.
MWD Water District of Southern California, “Regional Urban Water Management Plan,”
November 2010.
Camp Dresser & McKee, Inc., “Rosarito Desalination Facility Conveyance and Disinfection
System Project,” June 21, 2010.
PBS&J, “Draft Otay Water District North District Recycled Water System Development
Project, Phase I Concept Study,” December 2008.
NBS Lowry, “Middle Sweetwater River System Study Water Resources Audit,” June 1991.
Michael R. Welch, “Middle Sweetwater River System Study Alternatives Evaluation,” May
1993.
Michael R. Welch, “Middle Sweetwater River Basin Conjunctive Use Alternatives,”
September 1994.
Geoscience Support Services, Inc., “Otay Mesa Lot 7 Well Investigation,” May 2001.
Boyle Engineering Corporation, “Groundwater Treatment Feasibility Study Ranch del Rey
Well Site,” September 1996.
Otay Water District
Water Supply Assessment Report
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59
Agreement for the Purchase of Treated Water from the Otay Water Treatment Plant between
the City of San Diego and the Otay Water District.
Agreement between the San Diego County Water Authority and Otay Water District regarding
Implementation of the East County Regional Treated Water Improvement Program.
Agreement between the San Diego County Water Authority and Otay Water District for
Design, Construction, Operation, and Maintenance of the Otay 14 Flow Control Facility
Modification.
Agreement between the Otay Water District and the City of San Diego for Purchase of
Reclaimed Water from the South Bay Water Reclamation Plant.
Otay Water District
Water Supply Assessment Report
Otay Plaza
60
Appendix A
Otay Plaza Project Vicinity Map
Otay Water District
Water Supply Assessment Report
Otay Plaza
61
Appendix B
Otay Plaza Project Development Plan
Otay Water District Board of Directors Meeting
March 6, 2013
Water Supply
Assessment Reports
for the Sunroad
Otay Tech Centre and
Otay Plaza Projects
SB 610 Compliance
OTAY TECH CENTRE
OTAY PLAZA
Background
Senate Bills 610 and 221 became effective on January 1,
2002, with the primary intent to improve the link between
water supply availability and land use decisions.
SB 610 Water Supply Assessment (WSA): Requires water purveyor to prepare a Water Supply Assessment report for inclusion in agency CEQA
documentation.
SB 221 Water Supply Verification: Does not apply to the Sunroad Projects which are
Industrial/Commercial subdivisions.
The Otay Tech Centre Project and Otay Plaza Water
Supply Assessment Reports: Board approval required for submittal of the WSAs to
the City of San Diego and County of San Diego.
2
Otay Tech Centre Project
3
253.1 Acre site
52 Commercial/Industrial Lots
Lots size varies ~ 1.8 – 5.3 Acres
Water Demand
178.7 AFY Potable
23 AFY Recycled
Otay Plaza Project
3
51.9 Acre site
20 Commercial/Industrial Lots
Water Demand
101.9 AFY Potable
11.9 AFY Recycled
Water Supply Assessment Reports for the
Sunroad
Otay Tech Centre and Otay Plaza Projects
Potable Water
Demands
2010 WRMP
Estimated Potable
Water Demands
Recycled Water
Demands
GPD AFY AFY GPD AFY
Otay Tech Centre 159,510 178.7 304.3 20,580 23
Otay Plaza 90,939 101.9 53 10,581 11.9
Total 250,449 280.6 357.3 31,161 34.9
Water Supply Assessment Reports
The regional and local water supply agencies
acknowledge the challenges and fully intend to
develop sufficient, reliable supplies to meet
demands.
Water suppliers recognize additional water
supplies are necessary and portfolios need to be
reassessed and redistributed with intent to serve
existing and future needs.
4
Water Supply Assessment Reports
The Reports documents the planned water supply
projects and the actions necessary to develop the
supplies.
Water supply for the Projects and for existing and
future developments within the District for a 20-
year planning horizon, under normal and in single
and multiple dry years, are planned for and are
intended to be made available.
5
Otay Water District
Planned Local Water Supply Projects
Rancho Del Rey Groundwater Well (500 AFY)
Rosarito Ocean Desalination Project (20,000-50,000 AFY)
Otay Mesa Lot 7 Groundwater Well (300 AFY)
Otay Mesa Recycled Water Supply Link Project (800 AFY)
6
7
Normal
Year
Single
Dry Year Multiple Dry Years
FY 2011 FY 2012 FY 2013 FY 2014 FY 2015
Demands
Otay Water District Demands 37,176 41,566 43,614 46,385 50,291
Total Demand 37,176 41,566 43,614 46,385 50,291
Supplies
Water Authority Supply 33,268 37,535 39,460 42,108 45,891
Recycled Water Supply 3,908 4,031 4,154 4,277 4,400
Total Supply 37,176 41,566 43,614 46,385 50,291
Supply Surplus/(Deficit) 0 0 0 0 0
Table 8 of Otay Tech Centre WSA Report and Otay Plaza WSA Report based on data from Table
30 on page 41 of OWD 2010 UWMP
District Demand totals with SBX7-7 conservation target achievement with single dry
year and multiple dry year increase as shown. The Water Authority could implement its
DMP. In these instances, the Water Authority may have to allocate supply shortages based on
the equitable allocation methodology in its DMP.
Otay Water District
Projected Balance of Supply and Demand
Conclusion
Water demand and supply forecasts are
included in the planning documents of MWD,
Water Authority, and the Otay Water District.
Actions necessary to develop the identified
water supplies are documented.
The Otay Tech Centre Project and Otay Plaza
Project SB 610 WSA demonstrates and
documents that sufficient water supplies are
planned for and are intended to be available
over the next 20 years.
8
It is believed that the Board has met the
intent of SB 610 statute in that:
1)Land use agencies and water
suppliers have demonstrated strong
linkage.
2)The Otay Tech Centre Project and
Otay Plaza Project Water Supply
Assessment clearly documents the
current water supply situation.
Conclusion continued
9
Staff Recommendation
That the Board of Directors approve the
Senate Bill 610 Water Supply Assessment
Report dated January 2013 for the Otay Tech
Centre Project.
That the Board of Directors approve the
Senate Bill 610 Water Supply Assessment
Report dated January 2013 for the Otay Plaza
Project.
10
Questions ?
Water Supply
Assessment Reports
for the Sunroad
Otay Tech Centre and
Otay Plaza Projects
SB 610 Compliance
OTAY TECH CENTRE
OTAY PLAZA
STAFF REPORT
TYPE MEETING: Regular Board
MEETING DATE: March 6, 2013
SUBMITTED BY:
Dan Martin
Engineering Manager
PROJECT: Various DIV. NO. ALL
APPROVED BY:
Rod Posada, Chief of Engineering
German Alvarez, Asst. General Manager
Mark Watton, General Manager
SUBJECT: Informational Item – Second Quarter Fiscal Year 2013 Capital
Improvement Program Report
GENERAL MANAGER’S RECOMMENDATION:
That the Otay Water District (District) Board of Directors (Board)
accept the Second Quarter Fiscal Year 2013 Capital Improvement
Program (CIP) Report for review and receives a summary via PowerPoint
presentation (see Attachment C).
COMMITTEE ACTION:
Please see Attachment A.
PURPOSE:
To update the Board about the status of all CIP project expenditures
and to highlight significant issues, progress, and milestones on
major projects.
ANALYSIS:
To keep up with growth and to meet our ratepayers' expectations to
adequately deliver safe, reliable, cost-effective, and quality water,
each year the District staff prepares a Six-Year CIP Plan that
identifies the District’s infrastructure needs. The CIP is comprised
of four categories consisting of backbone capital facilities,
replacement/renewal projects, developer's reimbursement projects, and
capital purchases.
AGENDA ITEM 6
The Second Quarter Fiscal Year 2013 update is intended to provide a
detailed analysis of progress in completing these projects within the
allotted time and budget of $18 million. Expenditures through the
Second Quarter totaled approximately $5.8 million. Approximately 32%
of the Fiscal Year 2013 expenditure budget was spent (see Attachment
B).
FISCAL IMPACT: Joe Beachem, Chief Financial Officer
No fiscal impact as this is an informational item only.
STRATEGIC GOAL:
The Capital Improvement Program supports the District’s Mission
statement, “To provide high value water and wastewater services to
the customers of the Otay Water District, in a professional,
effective, and efficient manner” and the General Manager’s Vision, “A
District that is at the forefront in innovations to provide water
services at affordable rates, with a reputation for outstanding
customer service.”
LEGAL IMPACT:
None.
DM/RP:jf
P:\CIP\CIP Quarterly Reports\2013\Q1\Staff Report\BD 03-06-13, Staff Report, Second Quarter FY 2013 CIP Report, (DM-RP).docx
Attachments: Attachment A – Committee Action
Attachment B - Fiscal Year 2013 Second Quarter CIP
Expense Report
Attachment C – Presentation
ATTACHMENT A
SUBJECT/PROJECT:
Various
Informational Item – Second Quarter Fiscal Year 2013
Capital Improvement Program Report
COMMITTEE ACTION:
The Engineering, Operations, and Water Resources Committee (Committee)
reviewed this item at a Committee Meeting held on February 21, 2013.
The Committee supported staff’s recommendation.
NOTE:
The “Committee Action” is written in anticipation of the Committee
moving the item forward for Board approval. This report will be sent
to the Board as a Committee approved item, or modified to reflect any
discussion or changes as directed from the Committee prior to
presentation to the full Board.
ATTACHMENT B
FISCAL YEAR 20132nd QUARTER REPORT
(Expendituresthrough12/30/2012)
($ InThousands)
CIPNo.
p2009
p2083
p2190
p2267
p2370
p2403
p2434
P2451
p2466
p2486
p2502
p2503
p2511
p2514
p2527
p2528
p2536
p2537
r2048
r2058
r2077
r2087
r2091
r2094
r2107
S2039
Description
CAPITAL FACILITYPROJECTS
PL-36-Inch,SDCWA OtayFCF No.14toRegulatorySite
PS-870-2Pump StationReplacement(28,000GPM)
PL-10-Inch,1485Zone,JamulHighlands
36-InchMainPumpoutsandAir/VacuumVentilationInstallations
LaPresaSystemImprovements
PL-12-Inch,624Zone,HeritageRoad-Olympic/OtayValley
RanchoDelReyGroundwaterWellDevelopment
OtayMesa DesalinationConveyanceand DisinfectionSystem
RegionalTrainingFacility
AssetManagementPlanConditionAssessmentand DataAcquisition
803-1 Pump StationModifications
850-2Pump StationModifications
NorthDistrict-SouthDistrictInterconnectionSystem
PL-30-Inch,980Zone,HunteParkway-ProctorValley/UseArea
1200-1PumpStationFacilityCover
30-InchPotableWaterPipelineManifoldat624 Reservoirs
HMBP-EmergencyStand-ByGeneratorSecondaryContainment
OperationsYardPropertyAcquisitionImprovements
RecPL-OtayMesa DistributionPipelinesandConversions
RecPL-16-Inch,860Zone,AirwayRoad-OtayMesa/Alta
RecPL-24-Inch,860Zone,AltaRoad-AltaGate/Airway
RecPL-24-Inch,927Zone,WuesteRoad-Olympic/OtayWTP
RecPS -927-1PumpStationUpgrade(10,000GPM)andSystem
Enhancements
PotableIrrigationMeterstoRecycledWaterConversions
RWCWRF ScreeningCompactorandChlorineInjectorsEnclosure
HiddenMountainLiftStationEnclosure
Project
Manager
Ripperger
Marchioro
Ripperger
Vasquez
Martin
Martin
Marchioro
Kennedy
Coburn-Boyd
Stevens
Marchioro
Marchioro
Marchioro
Martin
Stalker
Marchioro
Acuna
Martin
Martin
Martin
Martin
Cameron
Martin
Martin
Stalker
Stalker
FISCALYEAR-TO-DATE,12/31/12
FY2013
Budget
$900
50
5
195
500
1,000
14
200
50
50
1,000
1,150
30
300
60
250
15
5
950
5
65
10
115
29
Expenses
$222
in
127
124
4
15
35
15
115
1,028
2
34
6
68
5
672
7
79
13
5
_
Balance
$678
50
5
(32)
373
876
10
185
15
35
885
122
30
298
26
244
(53)
278
(2)
(14)
(3)
110
29
Expenseto
Budget%
25%
0%
0%
0%
118%
0%
25%
12%
29%
8%
70%
30%
12%
89%
0%
1%
57%
2%
100%
71%
140%
122%
130%
4%
0%
LIFE-TO-DATE,12/31/12
Budget
$21,600
12,581
228
435
1,430
925
8,700
30,000
300
1,350
625
525
3,550
1,550
30
1,300
60
300
2,200
3,500
4,500
7,000
1,880
3,100
115
29
Expenses
$20,997
581
3
234
1,427
3,532
1,186
276
750
606
485
1,591
1,256
2
34
6
468
1,339
2,675
1,031
1,858
1,519
5
Balance
$603
12,000
225
201
3
925
5,168
28,814
24
600
19
40
1,959
294
30
1,298
26
294
1,732
2,161
1,825
5,969
22
1,581
110
29
Expenseto
Budget%
97%
5%
1%
54%
100%
0%
41%
4%
92%
56%
97%
92%
45%
81%
0%
0%
57%
2%
21%
38%
59%
15%
99%
49%
4%
0%
Comments
Theprojectiscompleteandaccepted.Itwillbe
deletedthiscomingfiscalyear.
DrojectonholdpendingtheOtayMesa
DesalinationConveyance andDisinfection
System(CIPP2451)project.
No budgetforFY 13.
No expendituresplannedinQ2 FY2013.
Projectsubstantiallycomplete.Planned
expendituresforFY12carriedovertoFY13.
No budgetforFY 13.
On target.
TheprojectisonholdpendingNSCAgua
acquiringrightstopurchaseadjacentproperty,
constructingfirstphaseofpilotplant,and
acquiringrightsfromCFE foraccesstointake
andoutletstructures.Plantorestartthe3rd
quarterofFY 13.
The FY 13budgetwillbeusedforcoordination
withtheFireDistricttocompletetheproject.
Forecastontarget.
Ontarget;however,pendingin-houseSCADA
workwillbecompletedthirdandfourthquartersof
FY2013.
See P2502.
Progressslowedduetocommunityoppositionto
theCorralCanyonRoadalignmentandfollowup
meetingswithCountySupervisorGregCoxand
CWA.
Projectunderconstruction;anticipatecompletion
inMarch2013.
We aregettingupdatedquotestoseeifthereare
sufficientfundsbudgetedforthiscover.Ifnot,
we willrevaluatethecosteffectivenessofthis
project.
Projectonholdpending NorthDistrict-South
DistrictInterconnectionSystem(CIPP2511)
Project.
One remainingonlistforthe1004-2 Reservoir
site.
Projectindesign.
PlannedexpendituresforFY 12carriedoverto
FY13.Design is90%complete.
Projectonhold.
Portionsofprojectbuiltbydeveloper.
PlannedexpendituresforFY 12carriedoverto
FY13.Projectonhold.
PlannedexpendituresforFY 12carriedoverto
FY 13.Projectsubstantiallycomplete.
Conversionratefasterthananticipatedfor
FY 13.Thismulti-yearprojectisunderbudget.
$70,000willbespentthisfiscalyear.Duetoa
longleadtimetoget thescreeningcompactorunit
manufactured,theinstallationandSCADA
programmingforthesystemwillneedtobe
deferreduntilnextyearduringtheupcoming
budgetcycle.
Enclosureisintheprocessoffbeingordered.
Thesefundswillbespentthisfiscalyear.
=:\Forms\D-Construction\CIPQuarterlyReports\CIPQtrReports\FY2013\Q2\FY132ndqtrexp_130125-FINAL.xlsx
FISCALYEAR 20132ndQUARTER REPORT
(Expendituresthrough12/30/2012)
($InThousands)
CIPNo.
S2040
S2041
S2042
p2366
P2382
p2440
P2453
p2458
P2477
p2484
p2485
P2491
P2493
P2494
J)2495
p2496
P2504
Description
CalavoSewerBasinImprovements
RanchoSan DiegoSewerBasinImprovements
SewerVehicleCapitalPurchases
TotalCapitalFacilityProjects
REPLACEMENT/RENEWALPROJECTS
APCD EngineReplacementsandRetrofits
SafetyandSecurityImprovements
I-905UtilityRelocations
SR-11 UtilityRelocations
AMR Manual MeterReplacement
Res-624-1ReservoirCoverReplacement
LargeWaterMeterTestingandReplacementProgram
SCADA CommunicationSystemandSoftwareReplacement
850-3ReservoirExteriorCoating
624-2ReservoirInterior/ExteriorCoating
MultipleSpeciesConservationPlan
SanMiguelHabitatManagement/MitigationArea
OtayLakesRoadUtilityRelocations
RegulatorySiteAccessRoadandPipelineRelocation
Project
Manager
Marchioro
Marchioro
Rahders
Total:
Rahders
Dobrawa
Marchioro
Martin
Holly
Marchioro
Holly
Stalker
Cameron
Cameron
Coburn-Boyd
Coburn-Boyd
Martin
Cameron
FISCALYEAR-TO-DATE,12/31/12
FY2013
Budget
275
40
325
7,588
120
300
5
200
1,400
690
150
629
150
8
93
120
50
50
Expenses
68
13
2,884
231
89
85
82
103
114
20
66
2
7
39
3
93
Balance
207
27
325
4,704
(111)
211
5
115
1,318
587
36
609
84
6
86
81
47
(43)
Expenseto
Budget%
25%
33%
0%
38%
193%
30%
0%
43%
6%
15%
76%
3%
44%
25%
8%
33%
6%
186%
LIFE-TO-DATE,12/31/12
Budget
1,250
1,750
325
111,138
3,488
3,397
1,600
2,250
9,400
800
835
1,846
350
1,850
930
1,900
275
600
Expenses
68
13
41,942
2,439
1,828
1,579
121
8,624
176
376
759
326
6
789
810
204
256
Balance
1,182
1,737
325
69,196
1,049
1,569
21
2,129
776
624
459
1,087
24
1,844
141
1,090
71
344
Expenseto
Budget%
5%
1%
0%
38%
70%
54%
99%
5%
92%
22%
45%
41%
93%
0%
85%
43%
74%
43%
Comments
Effortto prioritizesewerrehabilitationprojects
District-widefordesignistakinglongerthan
expected.
Ontarget.
Theactualpurchasewillnottakeplacein
FY 13,butinsteadinFY 14.P.O.wasapproved
byGM inJanuary2013.
$31,798.10 CP#11 FY 12,Replacementdump
truckwaspurchasedinFY12,however,thecab
andchassisweredeliveredandpaidforin
FY 12,butfabricationandinstallationofthedump
bodywasnotcompleteduntilFY 13 sofinal
paymentof$58,224.47wasdeferreduntil
completed.
$54,036.63CP#'s3&4FY12,newgensetsfor
1090-1p/sandthewarehousewerebudgeted
andorderedinFY12,butnotdelivereduntilFY
13.
$36,664.58,APCD permittingandannualrenewal
fees.
$1,384.61,CP#2 FY12Newgensetfor944-1p/s
Gensetwas deliveredandpaidforinFY 12,but
budgetedstartupfee'swerenotincurreduntilFY
13duetopermittingissueswithAPCD.Further
encumbrancesexpectedduetoAPCD retrofitting
complianceofonroadvehicles.Expect$60,000.
$86KplannedtobespentthroughQ3 &Q4
FY13.$125KtobepushedtoFY 14.
StaffanticipatesthatCaltranswillissueaS33K
credittoOtay;however,projectonholdpending
Caltrans' receipt offinalaccountingnumbersfrom
theCityofSan Diego'ssewercontractor.
Projectindesign.
Projectisaheadofscheduleand onbudget.
Ontarget;however,constructionpostponedto
coincidewithlowFY 13winterdemands.
Projectinprogress.Projectexpected tospend
85%ofbudgetforFY13.
$125,000willbespentthisfiscalyearduetolow
staffinganddecidingtocontractoutSCADA
implementationandwirelessradioinstallations.
Theremaining$475,000willbemovedtonext
yearduring theupcomingbudgetcycle.
Projectcompleted.UpdatingReservoirAs-builts.
Expendituresanticipatedinfourthquarter.
Approximately$69,000oftheFY13budgetwill
notbespentbecauseworkontheJPAplanis
beingstopped.
Projectontrack;thisFYbudgetwillbespent.
Projectonhold.CityofChulaVistadriven.
Projectisprogressingfasterthaninitially
anticipated.
P:\Forms\D-Construction\CIPQuarterlyReports\CIPQtrReports\FY2013\Q2\FY132ndqtrexp_130125-FINAL.xlsx Page2of4
FISCALYEAR 20132nd QUARTER REPORT
(Expendituresthrough12/30/2012)
($InThousands)
CIPNo.
p2507
p2508
p2513
p2515
p2518
P2519
P2520
P2521
P2529
p2530
p2531
p2532
p2533
p2534
P2535
r2096
r2099
S2012
S2019
S2020
S2022
S2023
S2024
S2026
S2027
S2028
S2033
p2282
p2285
p2286
Description
EastPalomarStreetUtilityRelocation
PipelineCathodicProtectionReplacementProgram
EastOrangeAvenue BridgeCrossing
870-1 ReservoirPaving
803-3ReservoirInterior/ExteriorCoating
832-2ReservoirInterior/ExteriorCoating
MotorolaMobileRadioUpgrade
Large MeterVaultUpgradeProgram
711-2ReservoirInterior&ExteriorCoating
711-1 ReservoirInterior&ExteriorCoating
944-1ReservoirInterior&ExteriorCoating
944-2ReservoirInterior&ExteriorCoating
1200-1ReservoirInterior&ExteriorCoating
978-1ReservoirInterior&ExteriorCoating
458-2ReservoirInteriorCoating
RWCWRF -Upgradesand Modifications
RecycledSystemAirandVacuumValueRetrofit
SanDiegoCountySanitationDistrictOutfalland RSD Outfall
Replacement
Avocado Boulevard8-InchSewerMainImprovement
CalavoDrive8-InchSewerMainReplacement
HiddenMesaDrive8-InchSewerMainRehabilitation
CalavoDriveSewerMainUtilityRelocation
Campo Road SewerMainReplacement
ChallengeBoulevard8-InchSewerMainReplacement
RanchoSanDiegoPump StationRehabilitation
ExplorerWay 8-InchSewerMainReplacement
SewerSystemVariousLocationsRehabilitation
TotalReplacement/RenewalProjects
CAPITALPURCHASE PROJECTS
VehicleCapitalPurchases
OfficeEquipmentandFurnitureCapitalPurchases
FieldEquipmentCapitalPurchases
Project
Manager
Cameron
Martin
Cameron
Cameron
Cameron
Cameron
Martinez
Holly
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Martin
Holly
Kennedy
Martin
Martin
Martin
Martin
Cameron
Martin
Kennedy
Marchioro
Marchioro
Total:
Rahders
Dobrawa
Rahders
FISCALYEAR-TO-DATE,12731/12
FY2013
Budget
150
80
840
100
700
725
50
150
5
60
233
100
1375
210
50
60
50
155
300
1
200
9,559
49
_
115
Expenses
68
115
5
28
21
3
47
75
113
334
392
37
63
234
17
1
69
2556
104
125
Balance
82
80
725
95
672
704
47
103
5
(15)
120
100
1041
(182)
13
(3)
50
(79)
283
131
7,003
(55)
(10)
Expenseto
Budget%
45%
0%
14%
5%
4%
3%
6%
31%
0%
0%
0%
0%
0%
0%
0%
125%
48%
0%
24%
187%
74%
105%
0%
181%
6%
100%
35%
27%
0%
LIFE-TO-DATE,12/31/12
Budget
900
150
1,200
550
750
775
100
600
600
725
175
725
325
225
300
4,995
700
3550
2,275
600
180
80
5,500
280
2800
125
800
59,506
5,021
571
1758
Expenses
246
3
270
8
28
21
9
142
_
4,973
421
761
1,547
476
180
79
3
277
28
10
91
27,866
2,853
504
1129
Balance
654
147
930
542
722
754
91
458
600
725
175
725
325
225
300
22
279
2,789
728
124
-
1
5,497
3
2,772
115
709
31,640
2,168
67
629
Expenseto
Budget%
27%
2%
23%
1%
4%
3%
9%
24%
0%
0%
0%
0%
0%
0%
0%
100%
60%
21%
68%
79%
100%
99%
0%
99%
1%
8%
11%
47%
57%
88%
64%
Comments
Caltransdrivenproject.Constructiontobeginin
Summer2013.
Projectindesign.
ConstructionbeganJanuary2013.
EnvironmentalStudiestobegininFebruary2013.
ConstructiontobeginMid-February2013.
ConstructiontobeginMid-February2013.
Allmobilevehicleradiosscheduledtobe
upgradedbytheendofFY13.
3rojectinprogress.
NobudgetinFY 13.
NobudgetinFY 13.
NobudgetinFY13.
NobudgetinFY13.
NobudgetinFY13.
NobudgetinFY 13.
Expendituresanticipatedinfourthquarterof
FY13.
Projectsubstantiallycomplete.Planned
expendituresforFY12carriedovertoFY 13.
Projectsubstantiallycompleted.
Theinvoicewillcome inlateintheFiscalYear.
Projectunderconstruction.
Projectunderconstruction.Plannedexpenditures
forFY12carriedovertoFY 13.
Projectunderconstruction.
Projectunderconstruction.Plannedexpenditures
forFY12carriedovertoFY 13.
Projectonhold.WaitingforWasteWater
ManagementPlan.
Projectunderconstruction.Plannedexpenditures
forFY 12carriedovertoFY 13.
Countyhasnotcompletedthepreliminarydesign
reportandtheagreementneededbeforethe
DistrictcanreimbursetheCounty.
Ontarget.
SeeS2040.
$104,386.45,CP#8FY12,wasbudgetedforand
orderedinFY12,butwasnotdelivereduntil
8/2012.
$23,000.00,CP#6FY13,purchasedeferredfor
FY13.Nofurtheractivityprojectedthis fiscal
year.
No budgetinFY 13.
$4,900.00WeldingfortrailerCP#14,FY 12.
Weldingwas budgetedforFY12,butworkwas
notcompleteduntilFY 13.
$43,628.27unbudgetedemergencyrepair.Used
topayfortherepair ofeffluentpump andmotor
#4atthetreatmentplant.
$18,465.79encumberedagainstthisaccountfor
thepurchaseofonetruckmountedcrane.No
furtheractivityprojectedthisfiscalyear.
P:\Forms\D-Construction\CIPQuarterlyReporteACIPQtrReports\FY2013\Q2\FY132ndqtrexp_130125-FINAL.xlsx
FISCALYEAR2013 2ndQUARTER REPORT
(Expendituresthrough 12/30/2012)
($ InThousands)
CIPNo.
p2443
P2461
p2469
P2470
P2104
P2107
p2325
r2028
r2042
r2047
r2082
r2083
r2084
r2085
Description
WirelessCommunicationsSystem
RecordsManagementSystemUpgrade2
InformationTechnologyNetworkand Hardware
FinancialSystemEnhancements
Total CapitalPurchaseProjects
DEVELOPER REIMBURSEMENT PROJECTS
PL-12-Inch,711Zone,LaMediaRoad-Birch/RockMountain
PL-12-Inch 711Zone,RockMountainRoad-LaMedia/SR125
PL-10-inchto12-inchOversize,1296Zone,PB Road-RollingHills
HydroPS/PB Bndy
RecPL-8-Inch,680Zone,HeritageRoad-SantaVictoria/OtayValley
RecPL-8-Inch,927Zone,RockMountainRoad-SR-125/EastLake
RecPL-12-Inch,680Zone,LaMediaRoad -Birch/RockMountain
RecPL-24-Inch,680Zone,OlympicParkway-Village2/Heritage
RecPL-20-Inch 680Zone HeritageRoad-Village2/Olympic
RecPL-20-Inch,680Zone,Village2-Heritage/LaMedia
RecPL-20-Inch,680Zone,LaMedia-State/Olympic
TotalDeveloperReimbursementProjects
GRAND TOTAL
Project
Manager
Stevens
Stevens
Stevens
Stevens
Total:
Martin
Martin
Martin
Martin
Martin
Martin
Martin
Martin
Martin
Martin
Total:
FISCALYEAR-TO-DATE,12/31/12
FY2013
Budget
200
90
120
220
794
49
_
_
4
53
$17,994
Expenses
21
8
86
344
_
_
-
$5,784
Balance
200
69
112
134
450
49
4
_
53
$12,210
Expense to
Budget %
0%
23%
7%
39%
43%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
32%
LIFE-TO-DATE,12/31/12
Budget
1,492
475
2,173
2,732
14,222
833
722
50
600
140
450
1,747
400
971
600
6,513
$191,379
Expenses
1,104
369
1,384
1,560
8,903
1
1
$78,712
Balance
388
106
789
1,172
5,319
833
722
50
600
140
450
1,747
400
970
600
6,512
$112,667
Expenseto
Budget%
74%
78%
64%
57%
63%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
41%
Comments
ExpenditurestotakeplaceinQ3andQ4of
FY13.
Expendituresontarget.
Forecastontarget.
Reductionincontractorexpensesreduces
forecastfrom$220Kto$175KforFY13.
No budgetinFY 13.
NobudgetinFY 13.
Expendituresanticipatedinthirdquarterasa
resultofreimbursementagreement.
NobudgetinFY 13.
NobudgetinFY 13.
NobudgetinFY 13.
NobudgetinFY 13.
Expendituresanticipatedinthirdquarter.
NobudgetinFY13.
NobudgetinFY13.
struction\CIPQuarterlyReports\CIPQtrReports\FY2013\Q2\FY132ndqtrexp_130125-FINAL.xlsx Page4of4 2/11/2013
Otay Water District
Capital Improvement Program
Fiscal Year 2013
Second Quarter
(through December 31, 2012)
Calavo Gardens Sewer Rehabilitation
Attachment C
12/14/12
Background
The approved CIP Budget for Fiscal Year 2013 consists of
70 projects that total $18 million. These projects are
broken down into four categories.
1.Capital Facilities $ 7.6 million
2.Replacement/Renewal $ 9.6 million
3.Capital Purchases $ .8 million
4.Developer Reimbursement $ 0.0 million
Overall expenditures through the Second Quarter Fiscal
Year 2013 totaled $5.8 million, which is 32% of the Fiscal
Year budget.
2
Fiscal Year 2013
Second Quarter Update
($1,000)
CIP
CAT Description FY 2013
Budget
FY 2013
Expenditures
%
FY 2013
Budget
Spent
Total Life-to-
Date Budget
Total
Life-to-Date
Expenditures
%
Life-to-
Date
Budget
Spent
1 Capital
Facilities $7,588 $2,884 38% $111,138 $41,942 38%
2 Replacement/
Renewal $9,559 $2,556 27% $59,506 $27,866 47%
3 Capital
Purchases $794 $344 43% $14,222 $8,903 63%
4 Developer
Reimbursement $53 $0 0% $6,513 $1 0%
Total:
$17,994 $5,784 32% $191,379 $78,712 41%
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Fiscal Year 2013
Second Quarter
CIP Budget Forecast vs. Expenditures
4
$17,994,000
$-
$2,000,000
$4,000,000
$6,000,000
$8,000,000
$10,000,000
$12,000,000
$14,000,000
$16,000,000
$18,000,000
$20,000,000
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
FISCAL YEAR PERIOD IN MONTHS
Budget Forecast
Total Expenditures
District Map of Major CIP Projects
5 5
5
CIP Projects in Construction
Reservoir 624-1 Floating Cover Replacement (P2477)
Install New Reinforced Polypropylene Geomembrane Floating Reservoir Cover
$0.8M Budget
Start: November 2012
Estimated Completion: April 2013
Draining 624-1 Reservoir for Construction
6
CIP Projects in Construction
Calavo Gardens Sewer Rehabilitation (S2019, S2020, S2022, S2026)
Replacement of 4,500 Linear Feet of Sewer
Manhole Rehabilitation/Replacement
Capacity Upgrades
New Flow Control and Diversion Vault for Calavo Lift Station
$3.35M Budget
Start: February 2012
Estimated Completion: May 2013
Above: Installing sewer pipe across Avocado Blvd
Left: Excavating Sewer Trench Adjacent to Calavo Lift Station
7
12/21/12
12/10/12
CIP Projects in Construction
8
Hunte Parkway 30-Inch Potable
Pipeline (P2514)
Installation of 2,250 LF of
Polyurethane Coated Steel
Pipe
$1.55M Budget
Start: April 2012
Estimated Completion: March
2013
Above: Installing 30-Inch Polyurethane Coated Steel Pipeline
Left: Backfilling Operations
10/18/12
10/16/12
CIP Projects in Construction
Phase I of 944-1R Recycled Water Pump Station Improvements (R2091)
Installation of New Pump
New Instrumentation
New Suction Header Piping
Three (3) New Pressure Reducing Stations
$1.88M Budget
Start: June 2011
Substantially Complete: 8/3/12
New Pump No. 3 and Suction Header
Piping at 944 Pump Station
9
07/02/12
10
Construction Contract Status
CIP NO. PROJECT TITLE CONTRACTOR BASE BID
AMOUNT
CONTRACT
AMOUNT W/
ALLOWANCES
NET CHANGE
ORDERS LTD*
% CHANGE
ORDERS W/
ALLOWANCE
CREDIT**
PROJECT
TOTAL %
R2091
944-1R Recycled
Pump Station
Upgrade & System
Enhancements
Sepulveda $1,099,423 $1,162,423 $0 0.0% -1.2%
R2096 RWCWRF
Upgrades Newest $3,349,000 $3,499,000 $72,807 2.2% 0.5%
P2370 La Presa System
Improvements TC Construction $938,995 $978,995 $82,548 8.8% 8.4%
S2019/S20
20/S2022/S
2026
Calavo Gardens
Sewer
Rehabilitation
Garcia Juarez
Construction $2,232,275 $2,316,275 $62,960 2.8% 0.4%
P2491 850-3 Reservoir
Coating
Advanced
Industrial Services $273,300 $293,300 $400 0.1% 0.1%
P2514
30-Inch Potable
Pipeline in Hunte
Parkway
Sepulveda $1,172,257 $1,212,257 $0 0.0% -2.1%
P2477
Reservoir 624-1
Cover
Replacement
Layfield $457,050 $497,050 $0 0.0% -8.0%
TOTALS: $9,522,300 $9,959,300 $218,715 2.3% 0.3%
*NET CHANGE ORDERS DO NOT INCLUDE ALLOWANCE ITEM CREDITS. IT'S A TRUE CHANGE ORDER
PERCENTAGE FOR THE PROJECT
**THIS CHANGE ORDER RATE INCLUDES THE CREDIT FOR UNUSED ALLOWANCES
Consultant Contract Status
11
Consultant Contract Status
12
Consultant Contract Status
13
QUESTIONS?
14