HomeMy WebLinkAbout09-15-16 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
September 15, 2016
9:00 A.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. AWARD A CONSTRUCTION CONTRACT TO UNDERGROUND PIPELINE SOLU-
TIONS, INC. FOR THE 36-INCH LA PRESA AIR-VACUUM VALVE RELOCATIONS
PROJECT IN AN AMOUNT NOT-TO-EXCEED $157,315 (MARTIN) [5 min]
4. AWARD A CONSTRUCTION CONTRACT TO BLASTCO, INC. FOR THE 978-1 &
850-2 RESERVOIR INTERIOR/EXTERIOR COATINGS AND UPGRADES PROJECT
IN AN AMOUNT NOT-TO-EXCEED $1,106,200 (MARTIN) [5 min]
5. APPROVE THE WATER SUPPLY ASSESSMENT AND VERIFICATION REPORT
DATED AUGUST 2016 FOR THE CITY OF CHULA VISTA UNIVERSITY INNOVA-
TION DISTRICT PROJECT, AS REQUIRED BY SENATE BILLS 610 AND 221 (CO-
BURN-BOYD) [5 mins]
6. SAN DIEGO COUNTY WATER AUTHORITY UPDATE (WATTON) [10 mins]
7. ADJOURNMENT
2
BOARD MEMBERS ATTENDING:
Tim Smith, Chair
Gary Croucher
All items appearing on this agenda, whether or not expressly listed for action, may be delib-
erated 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 September 9, 2016 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 September 9, 2016.
/s/ Susan Cruz, District Secretary
STAFF REPORT
TYPE MEETING: Regular Board
MEETING DATE: October 5, 2016
SUBMITTED BY:
Dan Martin
Engineering Manager
PROJECT: P2267-
001103
DIV. NO. 3 & 5
APPROVED BY:
Rod Posada, Chief, Engineering
German Alvarez, Assistant General Manager
Mark Watton, General Manager
SUBJECT: Award of a Construction Contract to Underground Pipeline
Solutions, Inc. for the 36-Inch La Presa Air-Vacuum Valve
Relocations Project
GENERAL MANAGER’S RECOMMENDATION:
That the Otay Water District (District) Board of Directors (Board)
award a construction contract to Underground Pipeline Solutions, Inc.
(UPSI) and to authorize the General Manager to execute an agreement
with UPSI for the 36-Inch La Presa Air-Vacuum Valve Relocations
Project in an amount not-to-exceed $157,315 (see Exhibit A for
Project locations).
COMMITTEE ACTION:
Please see Attachment A.
PURPOSE:
To obtain Board authorization for the General Manager to enter into a
construction contract with UPSI in an amount not-to-exceed $157,315
for the 36-Inch La Presa Air-Vacuum Valve Relocations Project
(Project).
ANALYSIS:
The District owns and operates the 36-inch mortar lined and coated
steel main which is located in Jamacha Boulevard and in State Route
2
94, as shown in Exhibit A. The main, which was constructed in 1986,
conveys potable water from San Diego County Water Authority Flow
Control Facility 11 to the North District.
The existing potable air-vacuum valves that support the 36-inch main
are within vaults. Five (5) of the six (6) vaults are located in the
traveled way shoulders of Jamacha Road and State Route 94. The sixth
air-vacuum valve is located within a vault at the District’s
Regulatory site. The purpose of this Project is to relocate the air-
vacuum valves to a location that is out of the traveled way and to
raise the air-vacuum appurtenances out of the existing vaults and
above the existing grade. The relocations will improve the
operability and maintainability of these air vacuum valves by:
reducing staff’s exposure to traffic and mitigating confined space
associated with the vaults by raising the air vacuum valves. The
Project will also address concerns associated with the existing air
vacuum valves located in potentially flooded vaults during a main
break.
The award of the construction contract to UPSI includes the
relocation of the six (6) air-vacuum valves, including traffic
control, excavation, and restoration of the roadway and site
improvements.
Staff prepared the contract documents in-house together with
assistance from the District’s As-Needed Engineering Consultant. The
Project was advertised for bid on July 12, 2016 using BidSync, an
online bid solicitation website. The Project was also advertised in
the Daily Transcript. BidSync provided electronic distribution of
the Bid Documents, including specifications, plans, and addendums.
Staff performed outreach to more than twenty-five (25) contractors,
notifying them of the contracting opportunity and encouraging them to
register with BidSync as included in the District’s advertisement and
in the District’s website.
A Pre-Bid Meeting was held on July 21, 2016, which was attended by
two (2) contractors. One (1) addendum was sent out to all bidders
using BidSync on July 22, 2016 to address questions asked during the
bidding period and modify the Bid-Proposal form to add an Agency
Permit Fees allowance item in response to a bidder’s question. The
allowance amount for the Agency Permit Fees item included in Addendum
No. 1 was a preset amount of $2,000.00 established by the District
and did not require the bidders to develop a bid for that item.
Bids were publicly opened on August 2, 2016, with the following
results:
3
CONTRACTOR TOTAL BID AMOUNT
1 Underground Pipeline Solutions, Inc.
Alpine, CA $155,315.00
2 Ahrens Mechanical
San Diego, CA $230,870.00
3 Piperin Corporation
Vista, CA $165,200.00
4 California Building Evaluation &
Construction, Inc.
Anaheim, CA $211,470.00
The Engineer's Estimate is $175,000.
The evaluation process included reviewing all bids submitted for
conformance to the contract documents. During the review of the
bids, it was discovered that UPSI, the apparent low bidder, did not
use the updated Bid List Bid Proposal Form included in Addendum No.
1. As a result, the bid submitted by UPSI did not include the Agency
Permit Fees allowance item established by the District in the amount
of $2,000.00. All other aspects of the bid submitted by UPSI were in
conformance with the contract documents. UPSI did acknowledge
Addendum No. 1 as part of their bid package. As noted above, the
Agency Permit Fees allowance item included in Addendum No. 1 was a
preset amount established by the District and did not require the
bidders to develop a bid for that item. When the allowance item was
added to the bid submitted by UPSI, UPSI remained the apparent low
bidder, as noted in the table below.
CONTRACTOR
TOTAL BID
AMOUNT
ADJUSTMENT FOR
AGENCY PERMIT FEES
ALLOWANCE
ADJUSTED
TOTAL BID
AMOUNT
1 Underground
Pipeline Solutions,
Inc.
Alpine, CA
$155,315.00 $2,000.00 $157,315.00
2 Ahrens Mechanical
San Diego, CA $230,870.00 Included in bid $230,870.00
3 Piperin Corporation
Vista, CA $165,200.00 Included in bid $165,200.00
4 California Building
Evaluation &
Construction, Inc.
Anaheim, CA
$211,470.00 Included in bid $211,470.00
4
Staff’s review has concluded that the missing Agency Permit Fees
allowance from UPSI’s bid is a minor bid irregularity that when added
did not change the outcome of the bid results. As such, staff has
determined that UPSI is the lowest responsive and responsible bidder.
UPSI holds a Class A Contractor’s License which expires on March 31,
2018. Staff checked the references provided with UPSI’s bid
indicating a good performance record on similar past projects. The
proposed Project Manager has experience in San Diego County on
similar projects and received good references. A background search
of the company was performed via the internet and revealed no
outstanding issues. UPSI submitted the Company Background and
Company Safety Questionnaires, as required by the Contract Documents.
Staff verified that the bid bond provided by the State National
Insurance Company, Inc. is valid. Once UPSI signs the contract, they
will furnish the performance bond and labor and materials bond.
Staff will verify both bonds prior to executing the contract.
FISCAL IMPACT: Joe Beachem, Chief Financial Officer
The total budget, as approved in the FY 2017 budget, is $735,000 for
CIP P2267. Total expenditures, plus outstanding commitments and
forecast, including this contract, is $716,497. See Attachments B
for budget details.
Based on a review of the financial budgets, the Project Manager
anticipates that the budget for CIP P2267 is sufficient to support
the Project.
Finance has determined that, under the current rate model, 100% of
the funding will be available from the Betterment Fund.
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:
None.
5
DM/RP:jf
P:\WORKING\CIP P2267 36-Inch La Presa Air-Vac Relocations\Staff
Reports\BD 10-05-16 Staff Report - Construction Contract Award to
Underground Pipeline Solutions.docx
Attachments: Attachment A – Committee Action
Attachment B – Budget Detail P2267
Exhibit A – Location Map
ATTACHMENT A
SUBJECT/PROJECT:
P2267-001103
Award of a Construction Contract to Underground Pipeline
Solutions, Inc. for the 36-Inch La Presa Air-Vacuum Valve
Relocations Project
COMMITTEE ACTION:
The Engineering, Operations, and Water Resources Committee
(Committee) reviewed this item at a meeting held on September 15,
2016. 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:
P2267-001103
Award of a Construction Contract to Underground Pipeline
Solutions, Inc. for the 36-Inch La Presa Air-Vacuum Valve
Relocations Project
8/29/2016
Budget
735,000
Planning
Total Planning - - - -
Design 001102
Consultant Contracts 2,440 2,440 - 2,440 AIRX UTILITY SURVEYORS INC
1,280 1,280 - 1,280 EVEREST ENVIRONMENTAL INC
5,879 5,879 - 5,879 RICK ENGINEERING COMPANY
Standard Salaries 53,894 53,894 - 53,894
Total Design 63,493 63,493 - 63,493
Construction
Consultant Contracts 8,760 8,760 - 8,760 DARNELL & ASSOCIATES INC
65,008 65,008 - 65,008 HDR ENGINEERING INC
Equipment Rental 55 55 - 55 TREBOR COMPANY, THE
For Ops Only - Contracted Services 2,022 2,022 - 2,022 KIRK PAVING INC
INFRASTRUCTURE EQUIPMENT & M 1,147 1,147 - 1,147 PACIFIC PIPELINE SUPPLY
Infrastructure Equipment & Supplies 10,923 10,923 - 10,923 FERGUSON WATERWORKS
1,140 1,140 - 1,140 HD SUPPLY WATERWORKS LTD
152 152 - 152 ALLIED TRENCH SHORING SERVICE
11,416 11,416 - 11,416 CONSUMERS PIPE & SUPPLY CO
748 748 - 748 I.M.P.A.C. GOVERNMENT SERVICES
2,250 2,250 - 2,250 RW LITTLE CO INC
1,461 1,461 - 1,461 C W MCGRATH INC
397 397 - 397 COUNTY OF SAN DIEGO - DPW
10,011 10,011 - 10,011 FERGUSON WATERWORKS #1082
1,157 1,157 - 1,157 UNITED RENTALS NORTHWEST INC
MOU Meals 116 116 - 116 PETTY CASH CUSTODIAN
OTHER AGENCY FEES 593 593 - 593 COUNTY OF SAN DIEGO
Professional Legal Fees 450 450 - 450 BURKE, WILLIAMS & SORENSEN LLP
Regulatory Agency Fees 1,640 1,640 - 1,640 CALTRANS
Salary Continuation Insurance 250 250 - 250 KISSINGER TRUCKING & EQUIPMENT
Service Contracts 5,200 5,200 - 5,200 HUDSON SAFE-T-LITE RENTALS
Water Loss 668 668 - 668
In-House Equipment & Inventory 30,808 30,808 - 30,808
Standard Salaries 209,281 209,281 30,000 239,281
Fixed Asset 660 660 - 660
INFRASTRUCTURE EQUIPMENT & M 34 34 - 34 COUNTY OF SAN DIEGO - DPW
Conversion Cost Type 44,344 44,344 - 44,344
157,315 - 157,315 157,315 Underground Pipeline Solutions, Inc.
- - 30,000 30,000 Contruction Management
- - 25,000 25,000 Contingency
Total Construction 568,004 410,689 242,315 653,004
Grand Total 631,497 474,182 242,315 716,497
Vendor/Comments
Otay Water District
p2267-36-Inch Main Pumpouts & Air/Vacuum Vent
Committed Expenditures
Outstanding
Commitment &
Forecast
Projected Final
Cost
OTAY WATER DISTRICT
36-INCH LA PRESA AIR-VACUUM VALVE RELOCATIONS PROJECTLOCATION MAP
EXHIBIT A
CIP P2267F
P:
W
O
R
K
I
N
G
\
P
2
2
6
7
-
3
6
-
I
n
c
h
L
a
P
r
e
s
a
A
i
r
V
a
c
R
e
o
l
c
a
t
i
o
n
s
\
G
r
a
p
h
i
c
s
\
E
x
h
i
b
i
t
s
-
F
i
g
u
r
e
s
\
E
x
h
i
b
i
t
A
!\
VICINITY MAP
NTSDIV 5
DIV 1
DIV 2
DIV 4
DIV 3
?ò
Aä%&s
?p
?ËPROJECT SITE
0 1,100550
Feet
AIR VAC #2
AIR VAC #1
JAM
A
C
H
A
B
L
V
D
SR-94 / CAMPO RD
T
R
A
C
E
R
D
AIR VAC #6
AIR VAC #3
AIR VAC #5
AIR VAC #4
JAMA
C
H
A
R
D
!\
VICINITY MAP
PROJECT SITE
NTSDIV 5
DIV 1
DIV 2
DIV 4
DIV 3
?ò
Aä%&s
?p
?Ë
F
STAFF REPORT
TYPE MEETING: Regular Board
MEETING DATE: October 5, 2016
SUBMITTED BY:
Dan Martin
Engineering Manager
PROJECT: P2534-001103
P2544-001103
DIV. NO. 3 & 5
APPROVED BY:
Rod Posada, Chief, Engineering
German Alvarez, Assistant General Manager
Mark Watton, General Manager
SUBJECT: Award of a Construction Contract to Blastco, Inc. for the
978-1 & 850-2 Reservoir Interior/ Exterior Coatings & Upgrades
Project
GENERAL MANAGER’S RECOMMENDATION:
That the Otay Water District (District) Board of Directors (Board)
award a construction contract to Blastco, Inc. (Blastco) and to
authorize the General Manager to execute a construction contract with
Blastco for the 978-1 & 850-2 Reservoir Interior/Exterior Coatings &
Upgrades Project in an amount-not-to exceed $1,106,200 (see Exhibit A
for Project location).
COMMITTEE ACTION:
Please see Attachment A.
PURPOSE:
To obtain Board authorization for the General Manager to enter into a
construction contract with Blastco for the 978-1 & 850-2 Reservoir
Interior/Exterior Coatings & Upgrades Project in an amount-not-to
exceed $1,106,200.
2
ANALYSIS:
The 978-1 Reservoir is a 0.5 million gallon (MG) steel tank
originally constructed in 1959. The tank is located on Pence Drive
in unincorporated El Cajon. It is one of two tanks in the 978
pressure zone. The 978-1 was last recoated in 2000 on the interior
and 1996 on the exterior surfaces. The 850-2 Reservoir is a 3.1 MG
steel tank originally constructed in 1973. It is one of four tanks
in the 850 pressure zone. The 850-2 was last recoated on the
interior and exterior surfaces in 1996.
The District’s corrosion consultant, HDR, Inc. (HDR) completed a
Corrosion Control Program (CCP) in 2015 that addressed the
installation, maintenance, and monitoring of corrosion protection
systems for the District’s steel reservoirs and buried metallic
piping. The CCP included a reservoir maintenance schedule that
showed the 978-1 and the 850-2 Reservoirs were due to be recoated.
In addition to replacing the coatings of the reservoirs, structural
upgrades will be added to comply with the current American Water
Works Association (AWWA) standards, and the Occupational Safety and
Health Administration standards for both Federal (OSHA) and State
(Cal-OSHA) levels.
An in-service internal and external inspection was completed by HDR,
and the recommended coating and structural upgrades, developed with
input from engineering and operations staff, are as follows: replace
the coating on the interior and exterior surfaces, replace the
existing level indicators, install new roof railings, install a new
fall prevention device on the interior and exterior ladders, modify
anode access ports, replace all anodes, replace the roof vents,
relocate the existing roof hatches, install new safety cable
lanyards, and added tank penetrations for chlorination and sampling.
These upgrades will ensure compliance with AWWA, OSHA, and Cal-OSHA
requirements as well as upgrade antiquated equipment on the tank.
The Project was advertised on August 4, 2016 on the District’s
website and several other publications including the San Diego Daily
Journal. A Pre-Bid Meeting was held on August 17, 2016, which was
attended by eight (8) contractors. Two (2) addenda were sent out to
all bidders and plan houses to address questions and clarifications
to the contract documents during the bidding period. Bids were
publicly opened on August 25, 2016, with the following results:
3
CONTRACTOR TOTAL BID AMOUNT
1
Blastco, Inc.
Downey, CA $1,106,200.00
2
Advanced Industrial Services, Inc.
Los Alamitos, CA $1,123,100.00
3
West Coast Industrial Coatings, Inc.
Laguna Hills, CA $1,394,352.01
4
Abhe & Svoboda, Inc.
Alpine, CA $1,975,156.00
The Engineer's Estimate is $ 1,224,900. West Coast Industrial
Coatings, Inc. submitted a bid amount of $1,394,352.00, however,
there was a mathematical error in the bid, and the corrected bid
amount was $1,394,352.01.
The evaluation process included reviewing all bids submitted for
conformance to the contract documents. The lowest bidder, Blastco,
submitted a responsible bid and holds a Class A Contractor’s license
which expires on August 31, 2017. Blastco also holds a current QP-1
certification from the Society for Protective Coatings, which was also
a requirement. Staff checked references, and the response from other
agencies indicated Blastco has performed excellent on similar
projects. The proposed Project Manager has experience throughout
California on similar projects and received excellent recommendations.
The District has previously worked with Blastco on the 657-1 & 657-2
Reservoir Interior and Exterior Coating project, which was completed
on time and on budget. A background search of the company was
performed on the internet and revealed no outstanding issues with this
company. Blastco submitted the Company Background and Company Safety
Questionnaires as required by the Contract Documents. Staff verified
that Blastco and their sub-contractors are registered with the
Department of Industrial Relations as required by Senate Bill SB 854.
Staff has verified that the bid bond provided by The Hanover
Insurance Company is valid. Once Blastco signs the contract, they
will furnish the performance bond and labor and materials bond.
Staff will verify both bonds prior to executing the contract.
FISCAL IMPACT: Joe Beachem, Chief Financial Officer
The total budget for CIP P2534, as approved in the FY 2017 budget, is
$715,000. Total expenditures, plus outstanding commitments and
forecast, are $670,875. See Attachment B-1 for the budget detail.
The total budget for CIP P2544, as approved in the FY 2017 budget, is
$1,070,000. Total expenditures, plus outstanding commitments and
forecast, are $1,022,208. See Attachment B-2 for the budget detail.
4
Based on a review of the financial budget, the Project Manager
anticipates that the budget is sufficient to support the Project.
The Finance Department has determined that, under the current rate
model, 100% of the funding will be available from the Replacement
Fund.
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:
None.
DM/RD:mlc
P:\WORKING\CIP P2534 & P2544 - 978-1 & 850-2 Reservoir Int-Ext Coating\Staff Reports\10-5-16, Staff
Report 978-1 & 850-2 Reservoir Coating.docx
Attachments: Attachment A – Committee Action
Attachment B-1 – Budget Detail for P2534 (978-1)
Attachment B-2 – Budget Detail for P2544 (850-2)
Exhibit A – Project Location for 978-1 & 850-2
ATTACHMENT A
SUBJECT/PROJECT:
P2534-001103
P2544-001103
Award of a Construction Contract to Blastco, Inc. for the
978-1 & 850-2 Reservoir Interior/ Exterior Coatings &
Upgrades Project
COMMITTEE ACTION:
The Engineering, Operations, and Water Resources Committee
(Committee) reviewed this item at a meeting held on
September 15, 2016. 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-1 – Budget Detail for P2534
SUBJECT/PROJECT:
P2534-001103
P2544-001103
Award of a Construction Contract to Blastco, Inc. for the
978-1 & 850-2 Reservoir Interior/ Exterior Coatings &
Upgrades Project
Date Updated: 8/23/16
Budget
715,000
Planning
Standard Salaries 5,000 2,720 2,280 5,000
Consultant Contracts 3,804 - 3,804 3,804 HDR ENGINEERING INC
Standard Materials 75 47 28 75 STANDARD MATERIALS
Equipment Charges 100 40 60 100 EQUIPMENT CHARGES
Total Planning 8,979 2,807 6,172 8,979
Design
Standard Salaries 25,000 2,812 22,188 25,000
Equipment Charges 40 8 32 40 EQUIPMENT CHARGES
Total Design 25,040 2,820 22,220 25,040
Construction
Standard Salaries 120,000 663 119,337 120,000
Construction Contract 392,720 - 392,720 392,720 BLASTCO, INC.
Service Contracts 250 - 250 250 SAN DIEGO DAILY TRANSCRIPT
Service Contracts 50,000 - 50,000 50,000 SPECIALTY INSPECTION
25,000 - 25,000 25,000 ALYSON CONSULTING-CM
750 - 750 750 CLARKSON LAB & SUPPLY
20,000 - 20,000 20,000 WATCHLIGHT CORPORATION
Professional Legal Fees 1,000 - 1,000 1,000
Equipment Charges 2,500 53 2,447 2,500 EQUIPMENT CHARGE
Project Closeout 5,000 - 5,000 5,000 CLOSEOUT
Project Contingency 19,636 - 19,636 19,636 5% CONTINGENCY
Total Construction 636,856 716 636,140 636,856
Grand Total 670,875 6,343 664,532 670,875
Vendor/Comments
Otay Water District
P2534-978-1 Reservoir Interior/Exterior Coating
Committed Expenditures
Outstanding
Commitment &
Projected Final
Cost
ATTACHMENT B-2 – Budget Detail for P2544
SUBJECT/PROJECT:
P2534-001103
P2544-001103
Award of a Construction Contract to Blastco, Inc. for the
978-1 & 850-2 Reservoir Interior/ Exterior Coatings &
Upgrades Project
Date Updated: 8/23/16
Budget
1,070,000
Planning
Standard Salaries 5,000 2,547 2,453 5,000
Consultant Contracts 3,804 - 3,804 3,804 HDR ENGINEERING INC
Total Planning 8,804 2,547 6,257 8,804
Design
Standard Salaries 20,000 3,319 16,681 20,000
Total Design 20,000 3,319 16,681 20,000
Construction
Standard Salaries 130,000 297 129,703 130,000
Construction Contract 713,480 - 713,480 713,480 BLASTCO, INC.
Service Contracts 60,000 - 60,000 60,000 SPECIALTY INSPECTION
25,000 - 25,000 25,000 ALYSON CONSULTING-CM
750 - 750 750 CLARKSON LAB & SUPPLY
20,000 - 20,000 20,000 WATCHLIGHT CORPORATION
Equipment Fees 2,500 25 2,475 2,500 EQUIPMENT FEES
Professional Legal Fees 1,000 - 1,000 1,000
Project Closeout 5,000 - 5,000 5,000 CLOSEOUT
Project Contingency 35,674 - 35,674 35,674 5% CONTINGENCY
Total Construction 993,404 322 993,082 993,404
Grand Total 1,022,208 6,188 1,016,020 1,022,208
Vendor/Comments
Otay Water District
P2544-850-2 Reservoir Interior/Exterior Coating
Committed Expenditures
Outstanding
Commitment &
Projected Final
Cost
OTAY WATER DISTRICT
978-1 & 850-2 Reservoir Interior/Exterior Coating & UpgradesLocation Map
EXHIBIT A
F
P:\WORKING\P2534 & P2544 978-1 & 850-2 Reservoirs Int-Ex Coating\Graphics\Exhibits-Figures\Location Map-Color.mxd
§¨¦8
§¨¦8
§¨¦8
ÃÅ94
ÃÅ125
ÃÅ94
ÃÅ125
ÃÅ94
0 5,0002,500
Feet
850-2 RESERVOIR
978-1RESERVOIR
CIP P2534CIP P2544
PROJECT SITE
PROJECT SITE
SR-94 / CAMPO RD
!\
VICINITY MAP
PROJECT SITENTS
DIV 5
DIV 1
DIV 2
DIV 4
DIV 3
?ò
Aä%&s
?p
?Ë
!\
PROJECT SITE
F
J A M A C H A
BLVD
J A M A C H A R D
STAFF REPORT
TYPE MEETING: Regular Board MEETING DATE: October 5, 2016
SUBMITTED BY: Lisa Coburn-Boyd
Environmental Compliance
Specialist
Bob Kennedy
Engineering Manager
CIP./G.F. NO: D0028-
090277
DIV. NO. 2
APPROVED BY:
Rod Posada, Chief, Engineering
German Alvarez, Assistant General Manager
Mark Watton, General Manager
SUBJECT: Approval of Water Supply Assessment and Verification Report
(August 2016) for the City of Chula Vista University
Innovation District Project
GENERAL MANAGER’S RECOMMENDATION:
That the Otay Water District (District) Board of Directors
(Board) approve the Water Supply Assessment and Verification
Report (WSA&V Report) dated August 2016 for the City of Chula
Vista University Innovation District Project, as required by
Senate Bills 610 and 221 (see Exhibit A for Project location).
COMMITTEE ACTION:
Please see Attachment A.
PURPOSE:
To obtain Board approval of the August 2016 WSA&V Report for the
City of Chula Vista University Innovation District Project, as
required by Senate Bill 610 and Senate Bill 221 (SB 610 and SB
221).
ANALYSIS:
The City of Chula Vista submitted a request to the District for
a WSA&V Report, pursuant to SB 610 and SB 221. SB 610 and SB
221 require that, upon the request of the City or County, a
water purveyor, such as the District, prepare a water supply
2
assessment and verification report to be included in the
California Environmental Quality Act (CEQA) environmental
documentation. SB 610 requires a city or county to evaluate
whether water supplies will be sufficient to meet the projected
water demand for certain “projects” that are otherwise subject
to the requirement of the CEQA. SB 610 provides its own
definition of “project” in Water Code Section 10912.
SB 221 requires affirmative written verification from the water
purveyor of the public water system that sufficient water
supplies are planned to be available for certain residential
subdivisions of property. The requirements of SB 610 and SB 221
are addressed by the May 2016 WSA&V Report for this Project.
The WSA&V Report was prepared by the District in consultation
with Dexter Wilson Engineering, Inc., the San Diego County Water
Authority (Water Authority), and the City of Chula Vista (City).
Prior to transmittal to the City, the WSA&V Report must be
approved by the Board of Directors. An additional explanation
of the intent of SB 610 and SB 221 is provided in Exhibit B, the
City of Chula Vista University Innovation District Project WSA&V
Report is provided as Exhibit C.
For the City of Chula Vista University Innovation District
Project, the City is the responsible land use agency that
requested the SB 610 and SB 221 water supply assessment and
verification reports from the District. The request for the
WSA&V Reports, in compliance with SB 610 and SB 221
requirements, was made by the City because the Project meets or
exceeds one or both of the following SB 610 and SB 221 criteria:
A proposed residential development of more than 500
dwelling units.
A proposed commercial office building employing more than
1,000 persons or having more than 250,000 square feet of
floor space.
A mixed-use project that includes one or more of the land
uses specified in SB 610.
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 City of Chula Vista University Innovation District Project
is located along the north side of the Otay River Valley within
3
the Otay Ranch Development. The Project is planned to include a
State University site with education buildings, student and
faculty housing, commercial, recreation, and open space areas.
The Project proposes up to 10,066,200 square feet of development
and could include up to 20,000 students, 6,000 faculty/staff
members and 8,000 commercial employees. Up to 6,000 students
and 1,200 faculty/staff members could be housed onsite.
The expected potable water demands for the City of Chula Vista
University Innovation District Project are 840,688 gpd or about
941.7 AFY. This is 11.7 AFY higher than the demand estimate in
the District’s 2008 Water Resources Master Plan November 2010
Update, which estimated 930.0 AFY for the same parcels.
Recycled water is proposed to be used within the Project and the
estimated annual average usage is projected to be 159,255 gpd or
178 AFY.
The 11.7 AFY increase is accounted for through the Accelerated
Forecasted Growth demand increment of the Water Authority’s 2015
Urban Water Management Plan (UWMP). As documented in the Water
Authority’s 2015 UWMP, the Water Authority is planning to meet
future and existing demands, which include the demand increment
associated with the accelerated forecasted growth. The Water
Authority will assist its member agencies in tracking the
environmental documents provided by the agencies that include
water supply assessments and verifications reports that utilize
the accelerated forecasted growth demand increment to
demonstrate supplies for the development. In addition, the next
update of the demand forecast for the Water Authority’s 2020
UWMP will be based on SANDAG’s most recently updated forecast,
which will include the Project. Therefore, based on the
findings from the District’s 2015 UWMP and the Water Authority’s
2015 UWMP, this Project will result in no unanticipated demands.
The request for compliance with SB 221 requirements was made by
the City because the Project will exceed the SB 221 criteria of
a proposed residential development with more than 500 dwelling
units.
Pursuant to SB 610 and SB 221, the WSA&V Report incorporates by
reference the current Urban Water Management Plans and other
water resources planning documents of the District, the Water
Authority, and the Metropolitan Water District of Southern
California (Metropolitan). The District prepared the WSA&V
Report in consultation with Dexter Wilson Engineering, Inc., the
Water Authority, and the City, which demonstrates and documents
that sufficient water supplies are planned for and are intended
4
to be made available over a 20-year planning horizon under
normal supply conditions, in single and multiple-dry years to
meet the projected demand of the City of Chula Vista University
Innovation District Project and other planned development
projects within the District.
FISCAL IMPACT: Joe Beachem, Chief Financial Officer
The District has been reimbursed $8,000 for all costs associated
with the preparation of the City of Chula Vista University
Innovation District Project WSA&V Report. The reimbursement was
accomplished via an $8,000 deposit the Project proponents placed
with the District.
STRATEGIC GOAL:
The preparation and approval of the WSA&V Report for the City of
Chula Vista University Innovation District 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:
Approval of a WSA&V Report for the City of Chula Vista
University Innovation District Project in form and content
satisfactory to the Board of Directors would allow the District
to comply with the requirements of Senate Bills 610 and 221.
LC-B/BK:jf
P:\WORKING\WO D0028 City of Chula Vista University Innovation District\Staff Report\BD 10-05-06-
16, Staff Report, City of Chula Vista University Innovation District WSA&V Report(LCB-BK).doc
Attachments: Attachment A – Committee Action
Exhibit A – Location Map
Exhibit B – Explanation of the Intent of SB 610 &
SB 221
Exhibit C – City of Chula Vista University
Innovation District Project WSA&V
Report
Exhibit D – Presentation
ATTACHMENT A
SUBJECT/PROJECT:
D0028-090277
Approval of Water Supply Assessment and Verification
Report (August 2016) for the City of Chula Vista
University Innovation District Project
COMMITTEE ACTION:
The Engineering, Operations, and Water Resources Committee
(Committee) reviewed this item at a meeting held on
September 15, 2016. 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.
1
EXHIBIT B
Background Information
The Otay Water District (District) prepared the updated August 2016 Water Supply
Assessment and Verification (WSA&V) Report for the City of Chula Vista University
Innovation District Project at the request of the City of Chula Vista (City). The City’s
WSA&V request letter dated August 31, 2016 was received by the District on August 31,
2016 so the 90-day deadline for the District to provide the Board an approved WSA&V
Report to the City ends November 29, 2016.
The City of Chula Vista University Innovation District 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 August 2016 WSA&V Report for the City of Chula Vista University Innovation
District Project has been prepared by the District in consultation with Dexter Wilson
Engineering, Inc., the Water Authority, and the City, 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 and Government Code Sections
65867.5, 66455.3, and 66473.7 referred to as SB 221. SB 610 and SB 221 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. 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
subdivision of property. The requirements of SB 610 and SB 221 are addressed in the
August 2016 WSA&V Report for the City of Chula Vista University Innovation District
Project.
The expected potable water demands for the City of Chula Vista University Innovation
District Project are 840,688 gallons per day (gpd) or about 941.7 acre-feet per year
(AFY). This is 11.7 AFY higher than the demand estimate in the District’s 2010 Water
Resources Master Plan Update.
The 11.7 AFY increase in demand is accounted for through the Accelerated Forecasted
Growth demand increment of the Water Authority’s 2015 Urban Water Management
Plan (UWMP). As documented in the Water Authority’s 2015 UWMP, the Water
Authority is planning to meet future and existing demands, which include the demand
increment associated with the accelerated forecasted growth. The Water Authority will
assist its member agencies in tracking the environmental documents provided by the
agencies that include water supply assessments and verifications reports that utilize the
2
accelerated forecasted growth demand increment to demonstrate supplies for the
development. In addition, the next update of the demand forecast for the Water
Authority’s 2020 UWMP will be based on SANDAG’s most recently updated forecast,
which will include the Project. Therefore, based on the findings from the Otay WD’s
2015 UWMP and the Water Authority’s 2015 UWMP, this Project will result in no
unanticipated demands.
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 2015 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 January 2016, approved the update of their Integrated Water Resources Plan
(IRP). The 2015 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 State Water Project (SWP) supplies which are affected by a changing
climate and the operational constraints in the ecologically struggling Sacramento-
San Joaquin Delta.
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.
3
As calculated by MWD, the Water Authority’s current preferential right is 18.27% of
MWD’s supply, while the Water Authority accounted for approximately 22% 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 City of Chula Vista University
Innovation District 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 2015 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 Approval of Water Supply Assessment and Verification
Report (August 2016) for the City of Chula Vista University Innovation District Project
WSA&V Report does not in any way guarantee water supply to the Project.
Alternatively, if the WSA&V 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.
4
At the present time, based on the information available, the District is able to clearly
describe 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 City of Chula Vista University Innovation District
Project WSA&V Report, the City of Chula Vista University Innovation District 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&V 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 City of Chula Vista
University Innovation District Project.
Some recent actions regarding water supply assessments and verification reports by
Otay Water District are as follows:
The Board approved the water supply assessment report for the Otay Ranch
Village 2 Specific Plan Amendment Project on October 2, 2013.
The Board approved the water supply assessment report for the Otay Ranch
University Villages Project on November 6, 2013.
The Board approved the water supply assessment report for the Otay Ranch
Resort Village Project on May 7, 2014.
The Board approved the water supply assessment report for the Otay Ranch
Planning Area 12 Freeway Commercial Project on April 1, 2015.
The Board approved the water supply assessment report for the Otay 250
Sunroad East Otay Mesa Business Park Specific Plan Amendment Project on
July 6, 2016.
Water supplies necessary to serve the demands of the proposed City of Chula Vista
University Innovation District 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&V 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 City of Chula Vista University
Innovation District Project. The WSA&V Report demonstrates and documents that
sufficient water supplies are planned and are intended to be available over a 20-year
5
planning horizon, under normal conditions and in single and multiple-dry years, to meet
the projected demand of the proposed City of Chula Vista University Innovation District
Project and the existing and other planned development projects within the District.
Accordingly, after approval of a WSA&V Report for the City of Chula Vista University
Innovation District Project by the District's Board of Directors, the WSA&V Report may
be used to comply with the requirements of the legislation enacted by Senate Bills 610
and 221 as follows:
Senate Bill (SB) 610 Water Supply Assessment: The District's Board of Directors
approved WSA&V Report may be incorporated into the California Environmental
Quality Act (CEQA) compliance process for the City of Chula Vista University
Innovation District Project as a water supply assessment report consistent with the
requirements of the legislation enacted by SB 610. The City of Chula Vista, as lead
agency under the CEQA for the City of Chula Vista University Innovation District
Project environmental documentation, may cite the approved WSA&V Report as
evidence that a sufficient water supply is planned and intended to be available to
serve the City of Chula Vista University Innovation District Project.
Senate Bill (SB) 221 Water Supply Verification: The District's Board of Directors
approved WSA&V Report may be incorporated into the City of Chula Vista University
Innovation District Project as a water supply verification report, consistent with the
requirements of the legislation enacted by SB 221. The City, within their process of
approving the City of Chula Vista University Innovation District Project, may cite the
approved WSA&V Report as verification of intended sufficient water supply to serve
the Project.
OTAY WATER DISTRICT
WATER SUPPLY ASSESSMENT AND
VERIFICATION REPORT
for the
City of Chula Vista
University Innovation District Project
Prepared by:
Lisa Coburn-Boyd
Environmental Compliance Specialist
and
Bob Kennedy, P.E.
Engineering Manager
Otay Water District
In consultation with
Dexter Wilson Engineering, Inc.
And
San Diego County Water Authority
August 2016
EXHIBIT C
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
Otay Water District
Water Supply Assessment and Verification Report
August 2016
University Innovation District 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 ............................................................................................. 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 2015 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 ........................................................................... 38
6.3 Otay Water District ...................................................................................... 39
6.3.1 Availability of Sufficient Supplies and Plans for Acquiring Additional
Supplies ............................................................................................. 39
6.3.1.1 Imported and Regional Supplies ........................................... 40
6.3.1.2 Recycled Water Supplies ...................................................... 43
Section 7 – Conclusion: Availability of Sufficient Supplies ................................................ 51
Source Documents ................................................................................................................... 56
Appendices
Appendix A: University Innovation District Project Vicinity Map
Appendix B: University Innovation District Project Development Plan
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
1
Otay Water District
Water Supply Assessment Report
August 2016
University Innovation District Project
Executive Summary
The Otay Water District (Otay WD) prepared this Water Supply Assessment and Verification
Report (WSA&V Report) at the request of the City of Chula Vista (City) for the University
Innovation District Project. The City is having an environmental impact report (EIR)
prepared for the development of this project.
University Innovation District Project Overview and Water Use
The University Innovation District Project is located within the jurisdictions of the Otay WD,
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 Otay WD, Water Authority, and
MWD.
The City is having an EIR prepared for development of the 383.8 acre site (University
Innovation District Project). The land use plan proposes a State university to serve
approximately 20,000 students. The project is located within the Otay Ranch General
Development Plan along the north side of the Otay River Valley.
The expected potable water demand for the University Innovation District Project is 840,688
gallons per day (gpd) or about 941.7 acre feet per year (AFY). This is 11.7 AFY higher than
the projected demands in the District’s 2008 Water Resources Master Plan updated November
2010 (WRMP Update) which estimated 930.0 AFY for the same parcels. Recycled water is
proposed to be used within the project and the estimated annual average usage is projected to
be 159,255 gpd, or 178 AFY.
The 11.7 AFY increase in demand is accounted for through the Accelerated Forecasted
Growth demand increment of the Water Authority’s 2015 UWMP. As documented in the
Water Authority’s 2015 UWMP, the Water Authority is planning to meet future and existing
demands which include the demand increment associated with the accelerated forecasted
growth. The Water Authority will assist its member agencies in tracking the environmental
documents provided by the agencies that include water supply assessments and verifications
reports that utilize the accelerated forecasted growth demand increment to demonstrate
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
2
supplies for the development. In addition, the next update of the demand forecast for the
Water Authority’s 2020 UWMP will be based on SANDAG’s most recently updated forecast,
which will include the Project. Therefore, based on the findings from the Otay WD’s 2015
UWMP and the Water Authority’s 2015 UWMP, this project will result in no unanticipated
demands.
The Water Authority’s 2015 Urban Water Management Plan (UWMP) provides for a
comprehensive planning analysis at a regional level and includes water use associated with
accelerated forecasted development as part of its municipal and industrial sector demand
projections. These housing and commercial units were identified by the San Diego
Association of Government (SANDAG) in the course of its regional housing needs
assessment, but are not yet included in existing general land use plans of local
jurisdictions. The demand associated with accelerated forecasted residential development is
intended to account for SANDAG’s land-use development currently projected to occur
between 2035 and 2050, but has the likely potential to occur on an accelerated
schedule. SANDAG estimates that this accelerated forecasted residential and commercial
development forecasted could occur within the planning horizon (2020 to 2040) of the 2015
UWMP. This land-use is not included in local jurisdictions’ general plans, so their projected
demands are incorporated at a regional level. When necessary, this additional demand
increment, termed Accelerated Forecasted Growth, can be used by member agencies to meet
the demands of development projects not identified in the general land use plans.
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 UWMP’s. 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 OTAY WD, 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 OTAY
WD, 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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
3
An important planning document utilized by MWD, the Water Authority and OTAY WD is
the Integrated Resources Plan (IRP) which describes an agency’s long term water plan.
MWD’s 2015 IRP offers an adaptive management strategy to protect the region from future
supply shortages. This adaptive management strategy has five components: achieve additional
conservation savings, develop additional local water supplies, maintain Colorado River
Aqueduct supplies, stabilize State Water Project supplies, and maximize the effectiveness of
storage and transfer. MWD’s 2015 IRP has a plan for identifying and implementing
additional resources that expand the ability for MWD to meet future changes and challenges
as necessary to ensure future reliability of supplies. The proper management of these
resources help to ensure that the southern California region, including San Diego County, will
have adequate water supplies to meet long-term future demands.
Another important planning document is the UWMP. 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 Bills 610 and 221, 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 2015 UWMP Findings state that MWD has supply capabilities that would be
sufficient to meet expected demands from 2020 through 2040. 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
2015 UWMP identifies potential reserve supplies in the supply capability analysis (Tables 2-
4, 2-5, and 2-6), which could be available to meet the unanticipated demands such as those
related to the University Innovation District 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 2015 UWMP Update contain 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
Integrated Contingency Plan, Emergency Storage Project, and Water Shortage and Drought
Response Plan are taking actions to prepare for and appropriately handle an interruption of
water supplies. The Water Shortage and Drought Response Plan, provides the Water
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
4
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.
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. Even with these ever present challenges, the Water Authority
and MWD, along with Otay WD fully intend to have sufficient, reliable supplies to serve
demands.
Otay Water District Water Supply Development Program
In evaluating the availability of sufficient water supply, the University Innovation District
Project will be required to participate in the water supply development program being
implemented by the Otay WD. This is intended to be achieved through financial participation
in several local and/or regional water supply development projects envisioned by the Otay
WD. 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, and are in response to the regional water supply issues. These new water supply
projects are not currently developed and are in various stages of the planning process.
Imported water supplies along with the development of these additional Otay WD water
supply development projects supplies are intended to increase water supplies to serve the
University Innovation District Project water supply needs and that of other similar
development projects. The Otay WD water supply development program includes but is not
limited to projects such as the Middle Sweetwater River Basin Groundwater Well project, the
Rancho del Rey Groundwater Well project, the North District Recycled Water Supply
Concept, and the Rosarito Ocean Desalination Facility 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 Otay WD.
Findings
The WSA&V Report identifies and describes the processes by which water demand
projections for the proposed University Innovation District 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 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 University Innovation District project WSA&V Report and will be
included in the future water supply planning documents of the Water Authority and MWD.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
5
This WSA&V 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 University
Innovation District project. The WSA&V 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 University Innovation District project and the existing and other
planned development projects to be served by the Otay WD.
Accordingly, after approval of a WSA&V Report for the University Innovation District
project by the Otay WD Board of Directors (Board), the WSA&V Report may be used to
comply with the requirements of the legislation enacted by Senate Bills 610 and 221 as
follows:
1. Senate Bill 610 Water Supply Assessment: The Otay WD Board approved WSA&V
Report may be incorporated into the California Environmental Quality Act (CEQA)
Environmental Impact Report (EIR) compliance process for the University Innovation
District project as 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
University Innovation District project EIR amendment may cite the approved
WSA&V Report as evidence that a sufficient water supply is planned for and is
intended to be made available to serve the University Innovation District project.
2. Senate Bill 221 Water Supply Verification: The Otay WD Board approved WSA&V
Report may be incorporated into the City’s Tentative Map approval process for the
University Innovation District project as a water supply verification report, consistent
with the requirements of the legislation enacted by SB 221. The City, within their
process of approving the University Innovation District project’s Tentative Map, may
cite the approved WSA&V Report as verification of intended sufficient water supply
to serve the University Innovation District project.
Section 1 - Purpose
The City of Chula Vista is having an environmental impact report (EIR) prepared for the
development of the 383.8 acre parcel (University Innovation District Project). The project is
located within the Otay Ranch General Development Plan along the north side of the Otay
River Valley. The City requested that the Otay WD prepare a Water Supply Assessment and
Verification (WSA&V) Report for the University Innovation District Project. The University
Innovation District Project description is provided in Section 3 of this WSA&V Report.
This WSA&V Report for the University Innovation District project has been prepared by the
Otay WD in consultation with Dexter Wilson Engineering, Inc., the Water Authority, and the
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
6
City 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 and
Business and Professions Code Section 11010 and Government Code Sections 65867.5,
66455.3, and 66473.7 referred to as SB 221. SB 610 and SB 221 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 CEQA documentation and approval process of certain proposed projects. 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. The requirements of SB 610 and SB 221 are
being addressed by this WSA&V Report.
The City also requested, since the requirements of SB 610 and SB 221 are substantially
similar, that Otay WD prepare both the water supply assessment and verification
concurrently.
This WSA&V 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 University Innovation District Project, and
reasonably foreseeable planned future water demands to be served by Otay WD. The Otay
Water District Board of Directors approved WSA&V Report is planned to be used by the City
in its evaluation of the University Innovation District Project under the CEQA approval
process procedures.
Section 2 - Findings
The City of Chula Vista is having an EIR prepared for the development of the 383.8 acre
parcel (University Innovation District Project). The Otay WD prepared this WSA&V Report
at the request of the City for the University Innovation District Project.
The University Innovation District Project is located within the jurisdictions of the Otay WD,
the Water Authority, and MWD. To obtain permanent imported water supply service, land
areas are required to be within the jurisdictions of the Otay WD, Water Authority, and MWD
to utilize imported water supply.
The expected potable water demand for the University Innovation District Project is 840,688
gallons per day (gpd) or about 941.7 acre feet per year (AFY). This is 11.7 AFY higher than
the demand estimate in the District’s WRMP Update which estimated 930.0 AFY. Recycled
water is also proposed to be used on the project and is projected to be an average of 159,255
gpd, or 178 AFY.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
7
The 11.7 AFY increase in demand is accounted for through the Accelerated Forecasted
Growth demand increment of the Water Authority’s 2015 UWMP. As documented in the
Water Authority’s 2015 UWMP, the Water Authority is planning to meet future and existing
demands which include the demand increment associated with the accelerated forecasted
growth. The Water Authority will assist its member agencies in tracking the environmental
documents provided by the agencies that include water supply assessments and verifications
reports that utilize the accelerated forecasted growth demand increment to demonstrate
supplies for the development. In addition, the next update of the demand forecast for the
Water Authority’s 2020 UWMP will be based on SANDAG’s most recently updated forecast,
which will include the Project. Therefore, based on the findings from the Otay WD’s 2015
UWMP and the Water Authority’s 2015 UWMP, this project will result in no unanticipated
demands.
The Water Authority’s 2015 UWMP Update provides for a comprehensive planning analysis
at a regional level and includes water use associated with accelerated forecasted development
as part of its municipal and industrial sector demand projections. These housing and
commercial units were identified by the SANDAG in the course of its regional housing needs
assessment, but are not yet included in existing general land use plans of local
jurisdictions. The demand associated with accelerated forecasted residential development is
intended to account for SANDAG’s land-use development currently projected to occur
between 2035 and 2050, but has the likely potential to occur on an accelerated
schedule. SANDAG estimates that this accelerated forecasted residential and commercial
development forecasted could occur within the planning horizon (2020 to 2040) of the Water
Authority’s 2015 UWMP. This land-use is not included in local jurisdictions’ general plans,
so their projected demands are incorporated at a regional level. When necessary, this
additional demand increment, termed Accelerated Forecasted Growth, can be used by member
agencies to meet the demands of development projects not identified in the general land use
plans.
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 Otay WD, 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 Otay WD, the Water Authority, and MWD
next demand forecast and supply requirements and associated planning documents would then
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
8
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 the University Innovation District 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&V 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 University
Innovation District Project. This WSA&V Report incorporates by reference the current
Urban Water Management Plans and other water resources planning documents of the Otay
WD, the Water Authority, and MWD. The Otay WD prepared this WSA&V 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 University Innovation District Project as well as existing
and other reasonably foreseeable planned development projects within the Otay WD for a 20-
year planning horizon, in normal supply years and in single dry and multiple dry years.
The Otay Water District 2015 UWMP includes 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.
Otay WD 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 20x2020 Water Conservation Plan. The Otay WD 2015 target was
172 gpcd which it met (2015 actual was 124 gpcd) and the 2020 gpcd target (80 percent of
baseline) is 153 gpcd. The Otay WD’s recent per capita water use has been declining and
current water use already meets the 2020 target as calculated using 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, Otay WD’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 Otay WD (42,720 acre-feet (ac-ft)
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
9
in 2020 to 57,582 ac-ft in 2040) per the Otay Water District 2015 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 6.64 percent higher than the normal year demands.
The Otay WD 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 University
Innovation District Project and the existing and other reasonably foreseeable planned
development projects within the Otay WD in both normal and single and multiple dry year
forecasts for a 20-year planning horizon.
Section 3 - Project Description
The University Innovation District Project is located along the north side of the Otay River
Valley within the Otay Ranch Development. Refer to Appendix A for a vicinity map of the
proposed University Innovation District Project. The project is proposed to be located on
383.8 acres within the City of Chula Vista Otay Ranch General Development Plan. Although
the proposed development is located within the municipal boundaries of the City and subject
to the City’s land use jurisdiction, the Otay WD is the potable and recycled water purveyor.
The University Innovation District Project is within the jurisdictions of the Otay WD, the
Water Authority, and MWD.
The University Innovation District Project is planned to include a State university site with
education buildings, student housing, faculty housing, commercial, recreation, and open space
areas. The project proposes up to 10,066,200 square feet of development and could include
up to 20,000 students, 6,000 faculty/staff members, and 8,000 commercial employees. Up to
6,000 students and 1,200 faculty/staff members could be housed onsite. Refer to Appendix B
for the proposed development plan of the University Innovation District project.
The City has discretionary authority on land use decisions for the University Innovation
District Project and can establish actions and/or permit approval requirements. The projected
potable water demands associated with the University Innovation District Project have
considered the anticipated City discretionary actions and/or permit approvals and are
incorporated into and used in this WSA&V Report. The water demands for the proposed
University Innovation District Project are included in the projected water demand estimates
provided in Section 5 – Historical and Projected Water Demands.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
10
Section 4 – Otay Water District
The Otay WD is a municipal water district formed in 1956 pursuant to the Municipal Water
District Act of 1911 (Water Code §§ 71000 et seq.). The Otay WD 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 Otay WD 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 Otay WD 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, Otay WD also provides sewage collection and treatment services
to a portion of its service area known as the Jamacha Basin. The Otay WD 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 Otay WD from
the City of San Diego’s South Bay Water Reclamation Plant (SBWRP).
The Otay WD jurisdictional area is generally located within the south central portion of San
Diego County and includes approximately 125 square miles. The Otay WD 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 Otay WD 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 Otay WD is the international
border with Mexico.
The planning area addressed in the 2008 Otay WD WRMP Update and the Otay WD 2015
UWMP includes both the land within the jurisdictional boundary of the Otay WD and those
areas outside of the present Otay WD boundaries considered to be in the Area of Influence of
the Otay WD. Figure 3-1 contained within the Otay WD 2015 UWMP shows the
jurisdictional boundary of the Otay WD and the Area of Influence. The planning area is
approximately 143 square miles, of which approximately 125 square miles are within the
Otay WD current boundaries and approximately 18 square miles are in the Area of Influence.
The area east of Otay WD is rural and currently not within any water purveyor jurisdiction
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
11
and potentially could be served by the Otay WD 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 Otay WD jurisdiction. Data on forecasts for land use
planning, demographics, economic projections, population, and the future rate of growth
within Otay WD 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 Otay WD
service area is expected to increase from the 2015 figure of 217,339 to an estimated 285,340
by 2040. 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.
The Otay WD 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 Otay WD 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 Otay WD 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 Otay WD service area.
Urban Water Management Plan
In accordance with the California Urban Water Management Planning Act and recent
legislation, the Otay WD Board of Directors adopted an UWMP in June 2016 and
subsequently submitted the plan to the California Department of Water Resources (DWR).
As required by law, the Otay Water District 2015 UWMP includes projected water supplies
required to meet future demands through 2040. In accordance with Water Code Section
10910 (c)(2) and Government Code Section 66473.7 (c)(3), information from the Otay WD
2015 UWMP along with supplemental information from the Otay WD WRMP Update have
been utilized to prepare this WSA Report and are incorporated herein by reference.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
12
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
four target methods – each method has numerous methodologies.
In 2015, urban retail water suppliers were 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.
Otay WD 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 20x2020 Water Conservation Plan. The Otay WD was well below
its required 2015 target of 172 gpcd, with an actual 2015 gpcd of 124. The 2020 gpcd target
which is 80 percent of baseline is 153 gpcd.
The Otay WD’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, Otay WD’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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
13
Section 5 – Historical and Projected Water Demands
The projected demands for Otay WD 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 2015 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 October 15, 2013, 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 2015 UWMP update .
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 2015 through 2040. 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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
14
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 Otay WD 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 Otay WD, 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.
In evaluating the availability of sufficient water supply, the University Innovation District
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 WD 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 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 Otay WD 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 Otay WD.
In addition, MWD’s 2015 UWMP identified potential reserve supplies in the supply
capability analysis (Tables 2-4, 2-5, and 2-6), 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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
15
Demand Methodology
The Otay WD 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 Otay WD. 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 Otay WD 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
Otay WD.
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, if available). 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 Otay WD 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 Otay WD.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
16
The historical and projected potable water demands for Otay WD are shown in Table 1.
Table 1
Historical and Projected Potable Water Fiscal Year Demands (acre-feet)
Water Use Sectors 2010 2015 2020 2025 2030 2035 2040
Single Family 17,165 16,228 17,072 19,806 20,752 20,649 23,224
Multi-Family 3,605 3,460 5,557 6,732 7,342 7,585 8,837
Commercial, Industrial
& Institutional 4,110 4,953 6,577 7,949 8,653 8,923 10,378
Landscape 3,732 4,079 4,400 4,600 4,700 4,900 5,200
AFG* - University I. D. 11.7 11.7 11.7 11.7 11.7
AFG – PA 12 46 46 46 46 46
AFG – Otay 250 836 836 836 836 836
Near-term Annexations 2,973 2,973 2,973 2,973 2,973
Other 2,563 1,578 470 470 470 470 470
Totals 31,175 30,298 37,943 43,424 45,784 46,394 51,976
Source: Otay Water District 2015 UWMP.
*Accelerated Forecasted Growth Increment
University Innovation District Project Projected Water Demand
Using the land use demand projection methodology noted above, the projected potable water
demand for the proposed University Innovation District Project is shown in Table 2. The
projected potable water demand is 840,688 gpd, or about 941.7 ac-ft/yr. This potable demand
is 11.7 AFY more than was projected for these parcels by the Otay WD WRMP. Recycled
water demand projections are provided in Table 3. The projected recycled water use for the
project is 159,255 gpd, or 178 AFY.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
17
Table 2
University Innovation District Project Projected Potable
Water Annual Average Demands
Description Gross
Acreage
Potable
Water
Factor
Net Potable
Acreage/
Capita
Unit Rate Average
Demand
T-1: Future Development 99.8 80% 79.84 1,785 gpd/ac 142,514
T-2: Campus Vista 26.4 80% 21.12 1,785 gpd/ac 37,699
T-3: Campus Commons 29.0 80% 23.20 1,785 gpd/ac 41,412
T-4: Town Center 33.6 80% 26.88 1,785 gpd/ac 47,981
T-5: Urban Core 25.3 80% 20.24 1,785 gpd/ac 36,128
T-6: District Gateway 20.0 80% 16.00 1,785 gpd/ac 28,560
SD: Lake Blocks 5.2 100% 5.20 1,785 gpd/ac 9,282
O-1: Habitat Conservation 41.1 0% 0.00 0 0
O-2: Common Space 39.5 80% 31.60 1,785 gpd/ac 56,406
O-3: Pedestrian Walk 14.5 80% 11.60 1,785 gpd/ac 20,706
ROW: Right of Way 49.3 0% 0.00 0 0
Students in Housing --- 100% 6,000 50 gpd/stdnt 300,000
Faculty in Housing --- 100% 1,200 100 gpd/fclty 120,000
Total 383.8 840,688 gpd
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
18
Table 3
University Innovation District Project Projected Recycled
Water Annual Average Demands
Description Gross
Acreage
Recycled
Water
Factor
Net Recycled
Acreage/
Capita
Unit Rate Average
Demand
T-1: Future Development 99.8 20% 20.0 2,155 gpd/ac 43,100
T-2: Campus Vista 26.4 20% 5.3 2,155 gpd/ac 11,422
T-3: Campus Commons 29.0 20% 5.8 2,155 gpd/ac 12,499
T-4: Town Center 33.6 20% 6.7 2,155 gpd/ac 14,439
T-5: Urban Core 25.3 20% 5.1 2,155 gpd/ac 10,990
T-6: District Gateway 20.0 20% 4.0 2,155 gpd/ac 8,620
SD: Lake Blocks 5.2 0% 0 2,155 gpd/ac 0
O-1: Habitat Conservation 41.1 0% 0 0 0
O-2: Common Space 39.5 20% 19.75 2,155 gpd/ac 42,561
O-3: Pedestrian Walk 14.5 20% 7.25 2,155 gpd/ac 15,624
ROW: Right of Way 49.3 0% 0 0 0
Total 383.8 159,255 gpd
5.1 Demand Management (Water Conservation)
Demand management, or water conservation is a critical part of the Otay Water District 2015
UWMP and its long-term strategy for meeting water supply needs of the Otay WD customers.
Water conservation is frequently the lowest cost resource available to any water agency. The
goals of the Otay WD 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 Otay WD 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 Otay WD
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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
19
agencies. The demands shown in Tables 1 and 2 take into account implementation of water
conservation measures within Otay WD.
As one of the first signatories to the MOU Regarding Urban Water Conservation in
California, the Otay WD 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, Otay WD also benefits from regional
programs performed on behalf of its member agencies. The BMP programs implemented by
Otay WD and regional BMP programs implemented by the Water Authority that benefit all
their member agencies are addressed in the Otay Water District 2015 UWMP. In partnership
with the Water Authority, the County of San Diego, City of San Diego, City of Chula Vista,
and developers, the Otay WD 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 Otay WD.
Additional conservation or water use efficiency measures or programs practiced by the Otay
WD include the following:
Supervisory Control and Data Acquisition System
The Otay WD 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 Otay WD.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
20
The Otay WD 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 Otay WD and for the public welfare.
Otay WD continues to promote water conservation at a variety of events, including those
involving developers in its service area. In addition, Otay WD 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.
Otay WD 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: 2,083 completed since 1994
Large Landscape Surveys: 205 completed since 1990
Cash for Water Smart Plants Landscape Retrofit Program: over 2,553,938 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: 355
distributed or rebated since 2004
Residential High Efficiency Clothes Washers: 11,364 rebates since 1994
Residential ULFT/HET Rebate Program: 22,376 rebates provided between 1991-2010,
1,425 since 2010.
Outreach Efforts to Otay WD Customers - the Otay WD promotes its conservation
programs through staffing outreach events, bill inserts, articles in the Otay WD’s
quarterly customer Pipeline newsletter, direct mailings to Otay WD customers, the
Otay WD’s webpage and through the Water Authority’s marketing efforts.
School Education Programs- the Otay WD 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 Otay WD’s own Commercial Process
Improvement Program
As a signatory to the MOU Regarding Urban Water Conservation in California, the Otay WD
is required to submit biannual reports that detail the implementation of current water
conservation practices. The Otay WD voluntarily agreed to implement the fourteen water
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
21
conservation Best Management Practices beginning in 1992. The Otay WD submits its report
to the CUWCC every two years. The Otay WD BMP Reports for 2011-2012 and 2013-2014
are included in the Otay Water District 2015 UWMP.
Section 6 - Existing and Projected Supplies
The Otay WD currently does not have an independent raw or potable water supply source.
The Otay WD 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 Otay WD 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 Otay WD with 100 percent of its potable water.
The Water Authority in turn, currently purchases the majority of its water from MWD. Due
to the Otay WD reliance on these two agencies, this WSA&V 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 Otay WD, 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 Otay WD is also discussed
below.
6.1 Metropolitan Water District of Southern California 2015 Urban
Water Management Plan
MWD has prepared its 2015 UWMP which was adopted on May 9, 2016. The 2015 UWMP
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 2015 UWMP, MWD 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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
22
2015 UWMP documents the availability of these existing supplies and additional supplies
necessary to meet future demands.
MWD’s 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 2015 update to the IRP (2015 IRP
Update) describes an adaptive management strategy to protect the region from future supply
shortages. This adaptive management strategy has five components: achieve additional
conservation savings, develop additional local water supplies, maintain Colorado River
Aqueduct supplies, stabilize State Water Project supplies, and maximize the effectiveness of
storage and transfer. MWD’s 2015 IRP Update has a plan for identifying and implementing
additional resources that expand the ability for MWD to meet future changes and challenges
as necessary to ensure future reliability of supplies. The proper management of these
resources help to ensure that the southern California region, including San Diego County, will
have adequate water supplies to meet long-term future demands.
In May 2016, MWD adopted its 2015 UWMP in accordance with state law. The resource
targets included in the preceding 2015 IRP Update serve as the foundation for the planning
assumptions used in the 2015 UWMP. MWD’s 2015 UWMP contains a water supply
reliability assessment that includes a detailed evaluation of the supplies necessary to meet
demands over a 20-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 2015 UWMP, 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 5
years (2020). The 2015 UWMP 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 2015
UWMP can be found on the internet at the following site address:
http://www.mwdh2o.com/PDF_About_Your_Water/2015_UWMP.pdf
The UWMP updates for both MWD and the Water Authority included the increase in demand
projections included in SANDAG’s Series 13 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 Otay WD nevertheless fully
intend to have sufficient, reliable supplies to serve demands.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
23
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 2015 UWMP in June 2016. The updated Water Authority 2015 UWMP
identifies a diverse mix of local and imported water supplies to meet future demands. A
copy of the updated Water Authority 2015 UWMP can be found on the internet at:
http://www.sdcwa.org/sites/default/files/files/water-
management/water_resources/2015%20UWMP%20Final%2006222016.pdf
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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
24
acre feet per year by 2021, and then remain fixed for the duration of the transfer
agreement.
Development of seawater desalination in San Diego County assists the region in
diversifying its water resources; reduces dependence on imported supplies; and provides
a new drought‐proof, locally treated water supply. The Carlsbad Desalination Project is
a fully operational seawater desalination plant and conveyance pipeline developed by
Poseidon, a private investor–owned company that develops water and wastewater
infrastructure. The Carlsbad Desalination Project, located at the Encina Power Station in
Carlsbad, began commercial operation on December 23, 2015, and can provide a highly
reliable local supply of up to 56,000 AF/YR for the region. Of the total Carlsbad
Desalination Plant production, Vallecitos Water District has a direct connection and a
contract to receive 4,083 AFY. Carlsbad MWD has agreed to a take or pay of 2,500
AFY but a direct connection has not been built.
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, an increasing amount of conserved agricultural water from
IID, and desalinated seawater from the Carlsbad desalination plant. 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. Currently, the Water Authority pays about 22 percent of MWD's total revenue, but
has preferential rights to only 18.27 percent of MWD's water supply. 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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
25
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 2015 UWMP, MWD states that MWD has supply capacities that would be
sufficient to meet expected demands from 2020 through 2040. 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 2015 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, water saved from the AAC and CC lining
projects and desalinated seawater from the Carlsbad desalination plant. Table 4 summarizes
the Water Authority’s supply sources with detailed information included in the sections to
follow. Deliveries from MWD are also included in Table 4, which is further discussed in
Section 6.1 above. The Water Authority’s member agencies provided the verifiable local
supply targets for groundwater, recycled water, potable reuse and surface water, which are
discussed in more detail in Section 5 of the Water Authority’s 2015 UWMP.
Table 4
Projected Verifiable Water Supplies – Water Authority Service Area
Normal Year (acre feet)1
Water Supply Sources 2020 2025 2030 2035 2040
Water Authority Supplies
MWD Supplies 136,002 181,840 207,413 224,863 248,565
Water Authority/IID Transfer 190,000 200,000 200,000 200,000 200,000
AAC and CC Lining Projects 80,200 80,200 80,200 80,200 80,200
Regional Seawater Desalination 50,000 50,000 50,000 50,000 50,000
Member Agency Supplies
Surface Water 51,580 51,480 51,380 51,280 51,180
Water Recycling 40,459 43,674 45,758 46,118 46,858
Seawater Desalination 6,000 6,000 6,000 6,000 6,000
Brackish GW Recovery 12,100 12,500 12,500 12,500 12,500
Groundwater 17,940 19,130 20,170 20,170 20,170
Potable Reuse 3,300 3,300 3,300 3,300 3,300
Total Projected Supplies 587,581 648,124 676,721 694,431 718,773
Source: Water Authority 2015 Urban Water Management Plan – Table 9-1.
1Normal water year demands based on 1960-2013 hydrology.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
26
Section 5.6.1 of the Water Authority’s 2015 UWMP also includes a discussion on the local
supply target for seawater desalination. Seawater desalination supplies represent a significant
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. The project became operational in late 2015 and it more than doubles the amount of
local supplies developed in the region since 1991. The desalination plant itself was fully
financed, built, and is being operated by Poseidon. The Water Authority purchases water
from the plant under a water purchase agreement. The new pipeline connecting the
desalination plant with the Water Authority’s Second Aqueduct is owned and operated by the
Water Authority, but Poseidon had the responsibility for design and construction through a
separate Design-Build Agreement. The Water Authority was 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.
The Water Authority’s existing and planned supplies from the IID transfer, canal lining, and
desalination projects are considered “drought-proof” supplies and should be available at the
yields shown in Table 4 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 2015 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 2015 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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
27
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 on July
2013, a Sacramento Superior Court judge entered a final judgment validating the QSA and
rejecting all of the remaining legal challenges. The judge affirmed all of the contested actions,
including the adequacy of the environmental documents prepared by the IID. In May 2015, the
state Court of Appeal issued a ruling that dismissed all remaining appeals.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
28
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
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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
29
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.
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,
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
30
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.
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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
31
(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
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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
32
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.
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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
33
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.
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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
34
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).
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).
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
35
6.2.1.3 Carlsbad Seawater Desalination Project
Development of seawater desalination in San Diego County has assisted 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 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
2015 UWMP. The Carlsbad Desalination Project has obtained all required permits and
environmental clearances and starting in late 2015 provides 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:
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, is 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 established the commercial and technical terms for implementation of the
desalination product pipeline improvements. These improvements consisted of an
approximate 10-mile long, 54-inch diameter conveyance pipeline connecting the Desalination
Plant to the Water Authority’s Second Aqueduct. The pipeline was generally be constructed
within improved streets in commercial and industrial areas in the cities of Carlsbad, Vista, and
San Marcos. The Water Authority owns the Project Water Pipeline Improvements and has
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
36
assumed operational control of all pipeline improvements. This system was placed into
service in late 2015.
Expected Supply
The Project provides 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 10% of the total projected regional supply and 30%
of all locally generated water in San Diego County. The project more than doubles 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
desalination product pipeline improvements. These improvements consisted of an
approximate 10-mile long, 54-inch diameter conveyance pipeline connecting the Desalination
Plant to the Water Authority’s Second Aqueduct. The pipeline was generally constructed
within improved streets in commercial and industrial areas in the cities of Carlsbad, Vista, and
San Marcos. The Water Authority owns the Project Water Pipeline Improvements and has
assumed operational control of all pipeline improvements.
The Water Authority was 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 is being 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.
Based on current electricity cost estimates, the Water Purchase Agreement sets the price of
the water from the Carlsbad Desalination Project at $2,131 to $2,367 per acre foot in 2016.
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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
37
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.
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
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:
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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
38
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
Drinking Water Permit (October 2006). The California Department of Health Services
approved the Conditional Drinking Water Permit on October 19, 2006.
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 2010 UWMP and the 2013 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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
39
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 2015 UWMP contain comparisons of
projected supply and demands through the year 2040. 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 Otay WD
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 Otay WD 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 Otay WD.
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 Otay WD.
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 Otay WD 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 Otay WD. Historic imported water deliveries from
the Water Authority to Otay WD and recycled water deliveries from the Otay WD Ralph W.
Chapman Water Reclamation Facility (RWCWRF) are shown in Table 5. Since the year 2000
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
40
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
completing construction and the operation of the transmission, storage, and pump station
systems necessary to link the SBWRP recycled water supply source to the existing Otay WD
recycled water system.
Table 5
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
2015 26,494 3,777 30,271
Source: Otay Water District operational records.
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 Otay WD 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.
Potable Water System Facilities
The Otay WD continues to pursue diversification of its water supply resources to increase
reliability and flexibility. The Otay WD also continues to plan, design, and construct potable
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
41
water system facilities to obtain these supplies and to distribute potable water to meet
customer demands. The Otay WD has successfully negotiated two water supply
diversification agreements that enhance reliability and flexibility, which are briefly described
as follows.
The Otay WD 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 Otay WD. 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 Otay WD 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 Otay WD pays the City of San Diego to expand the Otay WTP to
meet the Otay WD 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 Otay WD 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 Otay WD demand.
The Otay WD 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 Otay WD. 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 Otay WD. The Otay WD 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 Otay WD water meter capacity fee and user rate structures. The Otay WD
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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
42
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 Otay WD 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 Otay WD 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 Otay WD 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 Otay WD 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 Otay WD shared the capital cost to expand its
capacity from 8 mgd to 16 mgd.
Federal, State, and Local Permits/Approvals
The Otay WD 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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
43
6.3.1.2 Recycled Water Supplies
Wastewater collection, treatment, and disposal services provided by the Otay WD 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 Otay WD
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 Otay WD is located primarily within the eastern area of the City of Chula
Vista and on the Otay Mesa. The Otay WD 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 Otay WD projects that annual average demands for recycled water will increase to 6,500
acre-feet per year by 2040. About 1,300 acre-feet per year of supply is generated by the
RWCWRF, with the remainder planned to be supplied to Otay WD by the City of San
Diego’s SBWRP.
North District Recycled Water Concept
The Otay WD is a recognized leader in the use of recycled water for irrigation and other
commercial uses. The Otay WD continues 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
proximity of the recycled water markets in the North District to the Otay WD 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 Otay WD recycled water system and market area.
The purpose of the North District Recycled Water System Development Project, Phase I
Concept Study, was 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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
44
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. The effluent limit of
concern was total nitrogen. The RWCWRF underwent an upgrade in 2012 to enhance
nitrogen removal through the treatment process. 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.
Recycled Water System Facilities
The Otay WD has constructed recycled water storage, pumping, transmission, and distribution
facilities and will continue to construct these facilities to meet projected recycled water
market demands. The Supply Link project 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 was completed in 2007 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 Otay WD water meter capacity fee and user rate structures.
The Otay WD 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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
45
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. Effective January 1, 2016, the City of San Diego raised the cost of recycled water 116% to
$754 per acre-foot.
Federal, State, and Local Permits/Approvals
The Otay WD has in place an agreement with MWD for their recycled water sales incentive
program for supplies from the RWCWRF and the SBWRP. Also, the Otay WD 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 Otay WD 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
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
Otay WD 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 Otay
WD in conformance with Order No. 2000-203.
6.3.1.3 Potential Groundwater Supplies
The Otay Water District WRMP Update, 2015 UWMP, and the 2015 Integrated Water
Resources Plan Update all contain a description of the development of potential groundwater
supplies. Over the past several years, Otay WD 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 Otay WD has
developed capital improvement program projects to continue the quest to develop potential
groundwater resources. Local Otay WD 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 Otay WD
have been on hold 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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
46
imported water, achieve a level of independence of the regional wholesale water agencies, and
diversify the Otay WD water supply portfolio consistent with the Otay Water District 2015
IRP Update.
In recognition of the need to develop sufficient alternative water supplies, the Otay WD has
taken the appropriate next steps towards development of production groundwater well
projects.
There are three groundwater well projects that the Otay WD 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
of a pilot well project. The ultimate objective of the Otay WD 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 Otay WD customers within that basin, as measured by water meters. In
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
47
the 1994-1995 period, the quantity of water that was returned to the groundwater basin by
Otay WD 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 Otay WD 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.
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 Otay WD. 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 Otay WD 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 Otay WD 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 Otay WD proceeded with the investigation of this
potential groundwater supply opportunity.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
48
The May 2001 Geoscience Support Services, Inc. completed for the Otay WD 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 DDW 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.
The Otay WD 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 Otay
WD of its intent to sell off the groundwater well asset.
In 1997, the Otay WD 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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
49
In January 2010, citing the rising cost of imported water and the Otay WD'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.
The Otay WD 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.
6.3.1.4 Otay Water District Desalination Project
The Otay WD 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
Otay WD’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 Otay WD to import the
Desalination project product water as a new local water supply resource.
While the treatment facility for the Desalination project will not be designed or operated by
the Otay WD , it is important that the Otay WD 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 Otay WD’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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
50
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 Otay WD supply sources.
The Desalination Feasibility Study addresses product water quality that is considered
acceptable for public health and distribution.
The Otay WD, or any other potential participating agencies, will be required to get approval
from the DDW 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 DDW 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 Otay WD would participate and receive desalinated water, while
the regional alternative assumes that other regional and/or local agencies would also
participate in the Rosarito project.
On November 3, 2010, the Otay WD 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 Otay WD. The supply target is assumed to be 50 mgd
while the ultimate capacity of the plant will be 100 mgd.
The Otay WD is proceeding with negotiations among the parties.
6.3.2 Otay Water District Capital Improvement Program
The Otay WD 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 Otay WD 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
Otay WD service area are defined and described within the Otay Water District WRMP Update.
These facilities are incorporated into the annual Otay WD 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, Otay WD prepares water system requirements specifically for the proposed
development project consistent with the Otay WD 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
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
51
well as the financial responsibility of the facilities required for service. The Otay WD 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 University Innovation District Project is currently located within the jurisdictions of the
Otay WD, Water Authority, and MWD. To obtain permanent imported water supply service,
land areas are required to be within the jurisdictions of the Otay WD, 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
are captured in the 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 Otay WD, 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 Otay WD, 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 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 2015 IRP Update describes an
adaptive management strategy to protect the region from future supply shortages. This
adaptive management strategy has five components: achieve additional conservation savings,
develop additional local water supplies, maintain Colorado River Aqueduct supplies, stabilize
State Water Project supplies, and maximize the effectiveness of storage and transfer. MWD’s
2015 IRP has a plan for identifying and implementing additional resources that expand the
ability for MWD to meet future changes and challenges as necessary to ensure future
reliability of supplies. The proper management of these resources help to ensure that the
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
52
southern California region, including San Diego County, will have adequate water supplies to
meet long-term future demands.
MWD adopted its 2015 UWMP, in accordance with state law, on May 9, 2016. The resource
targets included in the preceding 2015 IRP Update serve as the foundation for the planning
assumptions used in the 2015 UWMP. MWD’s 2015 UWMP contains a water supply
reliability assessment that includes a detailed evaluation of the supplies necessary to meet
demands over a 20-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 2015 UWMP, 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 5
years (2020). The 2015 UWMP 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.
In the Findings Section of the Executive Summary (Page ES-5) of their 2015 UWMP, MWD
states that MWD has supply capacities that would be sufficient to meet expected demands
from 2020 through 2040 under the single dry-year and multiple dry-year conditions. 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 2015 UWMP identifies potential reserve supplies in the supply
capability analysis (Tables 2-4, 2-5 and 2-6), 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.”
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 2015 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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
53
The WSA&V Report identifies and describes the processes by which water demand
projections for the proposed University Innovation District 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 University Innovation District 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 University Innovation District Project
WSA&V Report and will be included in the future water supply planning documents of the
Water Authority and MWD.
This WSA&V 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 University
Innovation District 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 University Innovation District Project and the existing and
other planned development projects to be served by the Otay WD.
Table 6 presents the forecasted balance of water demands and required supplies for the Otay
WD service area under average or normal year conditions. The total actual demand for FY
2015 was 30,271 acre feet. The demand for FY 2015 is 2,999 acre feet lower than the
demand in FY 2010 of 33,270 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 6 presents the forecasted balance of water demands and supplies for the Otay WD
service area under single dry year conditions. Table 7 presents the forecasted balance of
water demands and supplies for the Otay WD service area under multiple dry year conditions
for the three year period ending in 2019. The multiple dry year conditions for periods ending
in 2025, 2030, and 2035 are provided in the Otay Water District 2015 UWMP. The projected
potable demand and supply requirements shown the Tables 6 and 7 are from the Otay WD
2015 UWMP. 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 7. The recycled water supplies are assumed to experience no reduction in a dry year.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
54
Table 6
Projected Balance of Water Demands and Supplies Normal Year Conditions (acre feet)
Description FY 2020 FY 2025 FY 2030 FY 2035 FY 2040
Demands
Otay WD Demands 47,328 54,771 57,965 59,279 65,913
Active Conservation Savings (2,111) (1,844) (1,585) (1,538) (1,587)
Accelerated Forecast Growth (AFG)
– Planning Area 12 46 46 46 46 46
AFG – Otay Sunroad EOM SPA 836 836 836 836 836
AFG University Innovation District 11.7 11.7 11.7 11.7 11.7
Passive Conservation Savings (2,497) (4,497) (5,489) (6,040) (6,744)
Total Demand 43,613.7 49,323.7 51,784.7 52,594.7 58,475.7
Supplies
Water Authority Supply 37,943.7 43,423.7 45,784.7 46,394.7 51,975.7
Recycled Water Supply 5,670 5,900 6,000 6,200 6,500
Total Supply 43,613.7 49,323.7 51,784.7 52,594.7 58,475.7
Supply Surplus/(Deficit) 0 0 0 0 0
Table 7 presents the forecasted balance of water demands and supplies for the Otay WD
service area under single dry year and multiple dry year conditions from the Otay Water
District 2015 UWMP.
Table 7
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 2017 FY 2017 FY 2018 FY 2019
Demands
Otay WD Demands 37,176 38,749 38,844 40,378 42,430
Total Demand 37,176 38,749 38,844 40,378 42,430
Supplies
Water Authority Supply 33,268 33,877 33,972 35,240 37,026
Recycled Water Supply 3,908 4,872 4,872 5,138 5,404
Total Supply 37,176 34,639 38,844 40,378 42,430
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 and Verification Report
University Innovation District Project
55
Dry year demands assumed to generate a 7% increase in demand over normal conditions for a
single dry year. For multiple dry years an 8% increase in demand over normal conditions is
projected in the first year, 14% in the second year and 21% increase is projected in the third
year in addition to new demand growth.
In evaluating the availability of sufficient water supply, the University Innovation District
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 Otay WD 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 Otay WD 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 Otay WD
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 Otay WD.
The Otay WD 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 Otay WD 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 University Innovation District Project, along with existing and other planned
development projects within the Otay WD service area.
This WSA&V 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 University Innovation District
Project as well as existing and other reasonably foreseeable planned development projects
within the Otay WD for a 20-year planning horizon, in normal and in single and multiple dry
years.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
56
Source Documents
University Innovation District Project SB 610 and SB 221 Compliance request letter received
August 31, 2016.
CH2M and Otay Water District, “Otay Water District 2015 Urban Water Management Plan
Update”, May 2016.
City of Chula Vista, “Otay Ranch General Development Plan/Sub-regional Plan, The Otay Ranch
Joint Planning Project,” October 1993 amended June 1996.
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.
Carollo and Otay Water District, 2015 Integrated Water Resources Plan Update, June 2015.
San Diego County Water Authority, “Final 2015 Urban Water Management Plan, June, 2016.
MWD Water District of Southern California, “2015 Urban Water Management Plan,” June
2016.
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.
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
57
Boyle Engineering Corporation, “Groundwater Treatment Feasibility Study Ranch del Rey
Well Site,” September 1996.
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 and Verification Report
University Innovation District Project
58
Appendix A
University Innovation District Project Vicinity Map
Otay Water District
Water Supply Assessment and Verification Report
University Innovation District Project
59
Appendix B
University Innovation District Project Development Plan
Otay Water District
Board of Directors Meeting
October 5, 2016
Water Supply Assessment & Verification Report for the
City of Chula Vista
University Innovation District Project
EXHIBIT D
BACKGROUND
Senate Bills 610 and 221 became effective on January 1, 2002.
Primary intent: Improve the link between water supply
availability and land use decisions.
SB 610 requires a Water Supply Assessment (WSA) to
be included in the CEQA documents for a project.
SB 221 requires a Water Supply Assessment & Verification (WSA&V),
also included in the CEQA documents.
Board approval required for submittal of the WSA&V Report to the
City of Chula Vista.
2
City of Chula Vista
University Innovation District
Total Potable Water Demand – 941.7 AFY
(11.7 higher than 2010 Update of 2008 WRMP)
Total Recycled Water Demand – 178 AFY
3
Project Background
383.8 acre site planned for a State
University.
Includes education buildings,
student & faculty housing,
commercial, recreation, & open
space areas.
10,066,200 sq. ft. of development.
WSA & V Report
Acknowledges the challenges for regional and local water
supply agencies in meeting demands and that a
diversified portfolio is needed to serve existing and future
needs.
The Report documents planned water supply projects and
the actions necessary to develop the supplies.
Description of how water supply is planned and available
for the project and for existing and future development
over a 20‐year planning horizon, under normal and in
single‐dry and multiple‐dry years.
4
5
Water Authority Supplies
(acre feet)
Project 2020 ‐2025 2030 ‐2040
IID Water Transfer 190,000 200,000
ACC and CC Lining 80,200 80,200
Carlsbad Desalination 56,000 56,000
Total:326,200 336,200
Diversification
of
County Water Authority Supplies
Projected Verifiable Water Supply Projects
6
Otay Water District
Projected Balance of Supply and Demand
Source: Table 6 of the City of Chula Vista University Innovation District Project WSA&V Report.
Description FY 2020 FY 2025 FY 2030 FY 2035 FY 2040
Demands
Otay WD Demands1 47,328 54,771 57,965 59,279 65,913
AFG –Planning Area 12 46 46 46 46 46
AFG –Otay 250 Sunroad SPA 836 836 836 836 836
AFG –University Innovation District 11.7 11.7 11.7 11.7 11.7
Active Conservation Savings (2,111) (1,844) (1,585) (1,538) (1,587)
Passive Conservation Savings (2,497) (4,497) (5,489) (6,040) (6,744)
Total Demands 43,613.7 49,323.7 51,784.7 52,594.7 58,475.7
Supplies
Water Authority Supply 37,943.7 43,423.7 45,784.7 46,394.7 51,975.7
Recycled Water Supply 5,670 5,900 6,000 6,200 6,500
Total Supply 43,613.7 49,323.7 51,784.7 52594.7 58,475.7
Supply Surplus/(Deficit) 0 0 0 0 0
1 Potable, recycled and near term-annexation demands.
20000
30000
40000
50000
60000
2000 2005 2010 2015 2020 2025 2030 2035 2040
Historical & Projected
Potable Water Demands
Historical Projected (2015 UWMP)
CONCLUSION
Water demand and supply forecasts are included in the
planning documents of Metropolitan Water District of
Southern California, San Diego County Water Authority,
and the Otay Water District.
Actions necessary to develop the identified water supplies
are documented.
The SB 610 & SB 221 WSA&V Report documents that
sufficient water supplies are planned for and available over
the next 20 years.
The Board has met the intent of the SB 610 and SB 221
statutes.
7
STAFF RECOMMENDATION
That the Board of Directors approve Senate Bills 610 & 221
updated Water Supply Assessment & Verification Report dated
August 2016
for the
City of Chula Vista
University Innovation District
8
QUESTIONS?
9