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WATER DEMAND COMMITTEE
MEETING |
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ITEM: |
DISCUSSION ITEMS |
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6. |
REVIEW ESTIMATED COSTS
ASSOCIATED WITH PROPOSED EXPANSION OF FRACTURED ROCK STUDY TO INCLUDE ENTIRE
DISTRICT |
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Meeting
Date: |
July 21,
2010 |
Budgeted: |
N/A |
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From: |
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Program/ |
N/A |
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General Manager |
Line Item
No.: |
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Prepared
By: |
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Cost
Estimate: |
$30,100 |
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General
Counsel Review: Counsel has not
reviewed this staff note. |
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Committee
Recommendation: N/A—This is a progress
report only. |
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CEQA Compliance: N/A |
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SUMMARY: As
directed at the June 18, 2010 Water Demand Committee (WDC) meeting, District
staff will provide an initial estimate of the costs associated with expanding
the pilot study of wells in fractured rock formations to the entire
District. On June 18, staff presented
its findings, conclusions and recommendations based on a pilot study of
wells in the Carmel Woods, Carmel Views and Aguajito areas. The presentation relied on an extensive data
mining effort, primarily using a consultant, who used District, County and
State of
As shown in Exhibit 6-A, expanding this
effort to other fractured rock areas within the District, using the same
consultant and methods, would cost an estimated $26,500 for 530 hours. The nine major tasks would take about six
months to complete. A cost of $50 per
hour is used for budgeting purposes.
Roughly 650 wells are known to exist in the expanded study area, which
includes the Carmel Valley Upland and Miscellaneous areas. The study area does not include the Carmel
Valley Alluvial Aquifer or
The consultant cost estimate does not include instrumentation of selected monitor wells. Assuming six wells are found to be adequate for monitoring, another $3,600 would be needed for six automatic data loggers at $600 each. Thus, the total initial cost estimate is $30,100.
Given that procedures from the pilot study are already established, only 40 hours are expected for staff oversight and administration. Another 40 hours would be needed to download information from the data loggers.
The adopted Fiscal Year 2010-2011 budget includes a line item for $10,000 for fractured rock analysis (item 2-8-7). Thus, if an expanded study is approved by the Board, a mid-year budget adjustment will be needed to account for the estimated $20,100 overage. Actual costs could change based on a more definitive costs assessment at that time.
BACKGROUND: At its January 28, 2010 meeting, the MPWMD
Board of Directors did not approve Urgency Ordinance No. 143 that would have
temporarily suspended receipt and processing of Pre-Applications and
Applications for a MPWMD Water Distribution System (WDS) permit that is
supplied by a well drilled in “fractured rock.”
The Board referred additional research and discussion back to the Water
Demand, Rules and Regulations Review, and Technical Advisory Committees. Ordinance No. 143 information is available
at:
http://www.mpwmd.dst.ca.us/asd/board/boardpacket/2010/20100128/20/item20.htm
A detailed
presentation on the pilot study and update on other activities by MPWMD and
Monterey County regarding fractured rock wells was provided at the June 18,
2010 WDC meeting. Agenda materials and
minutes are found at:
http://www.mpwmd.dst.ca.us/asd/board/committees/waterdemandcommittee/2010/wdcagenda2010.htm
A presentation on
the pilot study and status update on fractured rock is planned for the
Technical Advisory Committee at its August 3, 2010 meeting.
EXHIBIT
6-A Cost estimate for Hutnak Hydrologic
Consultant Services
U:\staff\word\committees\waterdemand\2010\20100721\06\item6.doc