EXHIBIT 1-A
MPWMD
Capital Improvement Plan
DRAFT
(as of 3-27-12)
|
FY2012-13 |
FY2013-14 |
After 2014 |
Water Supply:
Aquifer Storage and Recovery Phase 1 Completion1 |
$885,165 |
$435,314 |
$295,348 |
Water Supply: Groundwater Replenishment2 |
1,036,550 |
1,469,200 |
50 - 70,000,000 |
Water Supply: Studies in Support of Combined Desal, GWR, and ASR Operations |
150,000 |
250,000 |
250,000 |
Water Supply: ASR Expansion Study – Part 1(Scoping locations) |
150,000 |
|
0 |
Water Supply: ASR Expansion Study – Part 2 (Easements & Test Wells) |
|
500,000 |
n.a. |
Water Supply: Feasibility studies – Other Projects |
200,000 |
200,000 |
n.a. |
Water Supply: Repayment of Advances for ASR1 |
427,056 |
427,056 |
427,056 |
Mitigation Program: Capital3 |
109,873 |
50,000 |
n.a. |
TOTAL CIP |
$2,958,644 |
$3,331,570 |
n.a. |
Notes:
(1) 3-22-12 update per J. Oliver; Capital costs only – staff and overhead captured in operating budget.
(2) 50% of FY 2013 and 2014 costs from Monterey Regional Water Pollution Control Agency GWR Project Planning Costs – Funding 1-2012, plus an additional $375,000 for environmental work.
(3) February 13, 2012 Comparison of Mitigation Program Costs Spreadsheet; Sum of program area “capital costs” plus Program Support “capital asset purchases.”
Description of Significant Capital
Projects
Aquifer Storage and Recovery
In
Phase 1 of Aquifer Storage and Recovery (District Water Project #1) excess
winter flow from the Carmel River is treated, transported and injected into the
Seaside Basin via special wells. This water is then taken in the dry season for
customer use. Santa Margarita Wells #1 and #2 are complete. Construction on a
facilities building is complete, with permanent power installation underway.
MPWMD continues coordination with Cal Am regarding system operations and
capacity, pipeline easement and ownership/operations. 1,117 AF were injected in Water Year 2011,
for a total injection of 4,346 AF since 1998.
Expected average yield is 920 AFY.
District
Water Project #2 is an expansion or phase 2 of ASR and includes two planned
wells at Seaside Middle School. Well #1
is drilled, with production testing complete. Installation of a permanent pump
and motor, along with temporary electrical control, is in progress.
Construction on Well #2 is planned for 2012-13. Expected average yield is 1,000 AFY.
MPWMD
and Cal Am continue to coordinate on needed infrastructure to enable operation
of Water Projects #1 and #2 at full capacity, as well as plans for future ASR
expansion phases. A third phase, the
fifth and sixth wells, are envisioned as a component of the regional
desalination project
Groundwater Replenishment
Modeled after the successful “Water Factory 21”
project in Orange County, and its larger and more advanced replacement project,
the Groundwater Replenishment project sponsored by the Monterey Regional Water
Pollution Control Agency would inject highly purified water from its treatment
plant into the Seaside Basin. After meeting time and distance standards, this
water could later be recovered for use.
MPWMD has pledged to fund 50% of pay-as-you-go capital
costs beginning in FY 2013, and to enter into a MOU with MRWPCA regarding the
bond financing, water purchase, and potable water resale. It is expected that the District will issue
bonds secured by wholesale water purchases by Cal-Am, backstopped by the
District’s secure User Fee revenue stream.
Expected average yield is expected to be 3,300 AFY.
Studies in Support of Combined Desal,
GWR, and ASR Operations
Examination of how the basin will be
"operated" if four primary sources of water are both injected and
extracted: (a) natural inflow, (b) Carmel River water under ASR, (c) desal
water in order to balance steady plant operations against variable demand, and
(d) advanced treated wastewater under Groundwater Replenishment. There are several key issues which will
require study and will lead to operations strategy:
Groundwater Flow Modeling - related simply to
how will water move between injection and extraction sites, and will it
actually move? That is, what is the
difference between basin-wide accounting and more localized well-based
accounting? For example, must examine
the potential of over-drafting down-gradient extraction or production wells, if
replenishment water does not reach that location at the same pace, especially
with respect to seawater intrusion.
Further discussion about injection into which aquifer and
matching/balancing extraction capacity from the same strata;
Geochemical Mixing Modeling - Four water sources
are introduced to a single reservoir.
New mixing modeling will be needed, and water quality issues examined.
Hydraulic Modeling – Examination of injection
into different aquifer strata (Paso Robles or Santa Margarita) and balancing
the extraction capacity of wells in the same aquifer. Does Cal-Am have sufficient well capacity for
extraction of all the new supply expected to come from the Seaside Basin? Is the Cal Am infrastructure in place to
extract, pump, move, and transmit water into their system? Does Phase 3 ASR provide sufficient capacity
to balance desal operations?
Permit Strategy - For all wells capable of both
injection and extraction, how can the permits be conformed to all read
similarly for similar sources and to allow for injection of both desal water
and Carmel River water? Should the Groundwater
Replenishment wells also be permitted for injection of desal water and Carmel
River water, especially for dilution if needed?
Should ASR wells also become permitted for standard production (like
Peralta, Plumas, etc)? How is water
accounting done for the groundwater basin as a whole, yet still account for
localized effects?
ASR Expansion Study
The
District expects to determine additional locations for ASR wells in the Seaside
Basin, the Tullarcitos aquifer in Carmel Valley, and other locations. This study will provide guidance for the
reallocation of the District’s remaining water right 20808-B. Part 1 of the study will identify possible
sites for ASR facilities. Part 2 would
involve possible test wells and site acquisition. Such sites would be “banked” until additional
ASR capacity is needed.
OTHER PROJECTS
Desalination
Desalination is treating seawater or brackish water to
remove impurities and salts in order to produce drinking water and concentrated
effluent. Seawater Reverse Osmosis desalination uses membrane filters for
coastal projects. The District has
offered to provide technical analysis, CEQA leadership, ownership, and or
low-cost public finance, for various desal alternatives. If a Cal-Am facility is the eventual project,
the District will endeavor to lend its status to reduce costs through low
interest State loans and access to the public finance markets. Even if a large “regional” project moves
forward, MPWMD engineers continue to explore desalination feasibility at an
abandoned treatment plant on U.S. Navy property at Del Monte Beach as a future
water supply.
Los Padres Dam Improvements
The District’s Water Project #5 explores the
possibility of expanding capacity of the Los Padres Reservoir via dredging
and/or a small increase in spillway elevation. The increase in spillway
elevation could perhaps be achieved by a rubber dam. However, the proposed project cannot move
forward until issues are resolved about future decommissioning, ownership, fish
passage, spillway improvements, among others.
Hence, the District no longer views this project as a near-term
solution. MPWMD continues conversations
with Cal Am and fishery agencies regarding the value of water release from the
Los Padres Reservoir in order to improve river habitat and increase aquifer
storage, especially in the dry summer months. Expected
average yield increase of 850 AFY through dredging, or up to 1,500 AFY if
additional capacity is created (e.g. a rubber dam).
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