EXHIBIT 15-D
ITEM: IX INFORMATIONAL
ITEMS/STAFF REPORTS
MEETING
DATE: NOVEMBER 16, 1998
P. STATUS REPORT ON PRODUCTION FROM THE SEASIDE GROUNDWATER
BASIN
SUMMARY: In response to
recent developments on former Fort Ord property that is within the City of
Seaside’s jurisdiction, Director Ely prepared a letter that documents his
concerns regarding groundwater production from the Seaside Basin (Exhibit P-1). These concerns center on the amount of
pumping from the Seaside Basin that occurred in Reporting Years (RYs) 1996 and
1997, and the potential for long-term damage to the basin. More specifically, Director Ely’s concerns
are focused on recent upgrades to the former Fort Ord golf courses, the Bayonet
and Blackhorse courses, that are currently managed by the BSL Golf Group under
contract with the City of Seaside. The
questions raised in this regard refer to the potential for increased groundwater
production from the Seaside Basin to support the observed landscaping
modifications and changes in operating procedures at the golf courses, and the
possible impacts this might have upon the Seaside Basin. The letter also notes that a new well has been
installed to support the golf course operation. Information relevant to these concerns is provided in the
discussion below.
DISCUSSION: In 1997, the
Monterey Peninsula Water Management District (District) completed a
comprehensive study update of groundwater conditions in the coastal subareas of
the Seaside Basin, as documented in the report by the District’s consultant,
Fugro West, Inc., entitled Seaside Coastal Groundwater Subareas Phase III
Update, dated September 1997. This
study developed a revised long-term or “safe” yield estimate of the coastal
subareas of 4,375 acre-feet (AF) per year, and the report documented that
recent groundwater extraction practices were exceeding this estimate. The recent increased extractions from the
coastal subareas are primarily due to production from the Paralta well, which
was put into full operation in April 1995.
From July 1995 to June 1997, the Paralta well produced an average of
1,988 AF per year in this two-year period.
This level of production can be attributed in part to
California-American Water Company’s (Cal-Am) desire to test the well and its
new ozone treatment facility capabilities, and also to the increased pressure
that has been placed on Cal-Am to maximize production from the Seaside Basin,
as per State Water Resources Control Board (SWRCB) Order 95-10. Intensive monitoring by the District during
this period has allowed for a better basis upon which to develop our current
understanding of the basin’s water resources capabilities and limitations.
A summary of production from the coastal
subareas, including that from Cal-Am wells and from the former Fort Ord golf
course well, is provided as Exhibit P-2. This table shows that total production from
the coastal subareas exceeded the long-term yield estimate in RYs 1996 and 1997
by an average of approximately 20%.
However, subsequent to the 1997 report the District, through the
Quarterly Water Supply Budget Strategy process, has been focusing on reducing
extractions to within the basin’s long-term yield estimate. As also shown in Exhibit P-2, the total production
for Reporting Year 1998 of 4,216 AF was 159 AF less than the long-term yield
estimate. In addition, District staff
have been working with Cal-Am to develop ways to optimize municipal production
to help reduce the recent observed water level declines, and to more
efficiently utilizing the basin’s resources.
Supplementary information regarding this work is provided in Exhibit P-3. Cal-Am is also considering options for
developing new wells or rehabilitating existing wells to better optimize its
ground water production from the basin.
The
production data from the former Fort Ord golf course well (Exhibit P-2), indicates that this
production has been generally about 10% or less of total coastal subarea
production. However, because the
present water supply circumstances within the District are resulting in
pressures that are pushing production in the basin towards its allowable limit
on a consistent basis, any potential for increased extractions must be closely
monitored by the District. In this
regard, the District submitted comments and concerns regarding the proposal for
a new well to serve the golf courses in a letter to the City of Seaside dated
May 28, 1998 (Exhibit P-4). Subsequently, District staff met with city
representatives to clarify and resolve these concerns, and the city
representatives have indicated that they will provide a follow up response and
documentation. Accordingly, additional
information from Seaside regarding this matter is anticipated.
The
new golf course well has been constructed and is presently being equipped for
operation. Thus far, no production has
been reported for the new well. It is
District staff’s understanding that once the new well is fully operational, it
will become the primary supply source to the golf courses, and the old well
will be used only as a back up supply in the event production problems are
encountered at the new well.
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