ADMINISTRATIVE COMMITTEE |
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3. |
CONSIDER expenditure of Budgeted,
REIMBURSIBLE Funds for WATER PROJECT 2 Aquifer Storage and Recovery (ASR) Well CONSTRUCTION |
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Meeting Date: |
May 14, 2012 |
Budgeted: |
Yes |
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From: |
David J. Stoldt, |
Program/ |
Water Supply |
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General Manager |
Line Item No.: |
1-2-1 B |
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Prepared By: |
Joe Oliver |
Cost Estimate: |
$2,206,600 ( |
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General Counsel Review: NA |
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Committee Recommendation: The Administrative Committee reviewed this
item on May 14, 2012 and recommended _______________. |
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CEQA Compliance: N/A |
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SUMMARY: The Board will consider authorization to enter
into a contract with the successful bidder for construction of the ASR-4 well
at the Water Project 2 site located at Seaside Middle School in Seaside. This work is part of the planned expansion of
the Seaside Basin ASR Project that the Monterey Peninsula Water Management
District (MPWMD or District) and California American Water (Cal-Am) are
cooperatively pursuing to augment the water supply for the Monterey Peninsula
community.
The planned work entails the
drilling of a pilot borehole, installation of well casing, screen and gravel
pack, development and testing of the well, provision of a pump, motor, flow
control valve and temporary discharge piping.
A bid notice for the drilling and construction of the new ASR-4 well by
a licensed C-57 drilling contractor was first advertised on April 26 and the
bid period is currently scheduled to close on May 16. By easement restriction, the well
construction must occur during the summer school break period to avoid
disruption of school activities. Due to
the tight timing of the needed approvals for this project, the results from the
bid opening for the well drilling and construction work are not yet available. Accordingly, the authorization requested is
based on the estimated cost, as described below.
MPWMD began Water Project 2
planning work in 2008, and completed the first phase of development with the
installation of dedicated monitor wells at the Middle School site in 2009. Since then, MPWMD and Cal-Am have been
working jointly to obtain Carmel River water rights for diversions to storage
at the site, and for land-use approval (site easement was granted to Cal-
Am in 2010). The first of the two
planned ASR wells was constructed in 2010 and appurtenant facilities were
installed in 2011. Injection testing was
initiated at the first site well (ASR-3) in 2012. Also in 2012, the District completed the
necessary California Environmental Quality Act (CEQA) documentation (Phase 1
ASR Project EIR addendum) to for the permanent Water Project 2 site.
The Board’s authorization of this
item is with the understanding that the District and Cal-Am will secure a cost
reimbursement agreement for this item prior to project initiation.
RECOMMENDATION:
Upon receipt of bids from qualified C-57 licensed drilling contractors, District
staff recommends that the General Manager be authorized to enter into a
contract with the lowest responsive and responsible bidder for construction of
the Water Project 2 ASR-4 well at the Seaside Middle School site. This authorization will include: (a) mobilization, sound wall, drilling, well
construction, testing, (b) ASR well pump and motor, (c) ASR well flow control
valve, and (d) provision of temporary discharge piping. The total estimated cost for this phase of
the project is $2,206,600. This amount
includes a 20% contingency for unanticipated cost variations.
District staff will proceed with executing
a contract for this work under this item if the well construction bid is within
20% of the estimated cost. The Board’s
authorization of this item is with the understanding that the cost for this
item will be reimbursed by Cal-Am through reimbursement agreement with the District.
BACKGROUND:
In August 2008, the District began discussions with the Monterey
Peninsula Unified School District (MPUSD) for potential use of an unused
portion of the Seaside Middle School property for potential expansion of the
Seaside Basin ASR program (i.e., Phase 2 or Water Project 2). In October 2009, the District drilled an
exploratory borehole and constructed a dedicated monitor well array at the site. This work confirmed that the site would be
suitable for drilling a full-scale ASR test well. The next step in development of this project was
to construct and test a full-scale ASR Test well at the site, which was
completed in 2010. This first well at
the site is now known as ASR-3. This
nomenclature is to minimize confusion and/or mislabeling of data associated
with the ASR-1 and 2 existing wells at the nearby Water Project 1 (Santa
Margarita) site that is located approximately 1,000 feet to the southeast of
the Middle School site. The current
timing for ASR-4 well construction is one year ahead of the previous planned
schedule. This accelerated schedule
comports with the recent California Public Utilities Commission (CPUC)
administrative law judge’s proposed decision that includes authorization for
Cal-Am to assign funding for the Water Project 2 ASR expansion in a memo
account. If the ASR-4 well is not
installed this summer, the next opportunity will be during the school’s 2013
summer break, which would complicate other facility construction work planned
for this same period.
Assuming successful completion
and testing of the ASR-4 well, it is planned to continue with development of
this site into a permanent ASR facility, similar to the existing Water Project
1 site. This will entail completion of
the necessary engineering designs, environmental review, permitting and
construction of permanent facilities, including: (a) a backflush percolation system, (b) underground
utility pipelines, (c) electrical control building, and (d) paved access,
fencing and landscaping. The current
schedule calls for completion of the permanent facilities at the Middle School
ASR site in December 2013. There will be
no water treatment facilities at the Middle School ASR site; all water from
this site will be treated prior to distribution into the Cal-Am system at the
offsite Water Project 1 (Santa Margarita) ASR Facility building.
IMPACT TO STAFF/RESOURCES:
A significant staff effort has been expended in planning, coordinating,
analyzing and overseeing work on the District’s ASR testing program in the
EXHIBITS
None
U:\staff\Board_Committees\Admin\2012\20120514\03\item3.docx