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ITEM: |
CONSENT CALENDAR |
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5. |
RECEIVE AND FILE DISTRICT-WIDE ANNUAL WATER DISTRIBUTION SYSTEM PRODUCTION SUMMARY REPORT FOR WATER YEAR 2011 |
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Meeting Date: |
April 16, 2012 |
Budgeted: |
N/A |
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From: |
David Stoldt, |
Program/ |
Hydrologic Monitoring |
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General Manager |
Line Item No.: N/A |
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Prepared By: |
Thomas Lindberg |
Cost Estimate: |
N/A |
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General Counsel Approval: N/A |
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Committee Recommendation: N/A |
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CEQA Compliance: N/A |
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SUMMARY: Staff has prepared the draft Water Production Summary Report for Water Distribution Systems (WDSs) within the Monterey Peninsula Water Management District (District) for Water Year (WY) 2011. WY 2011 covers the 12-month period from October 1, 2010 through September 30, 2011. Preliminary computations indicate that 13,162 acre-feet (AF) of water were produced by the 117 recognized WDSs in the District during WY 2011. In general, recognized WDSs refer to systems that either: (a) have received a WDS permit, or (b) have been confirmed as a pre-existing system prior to District rules that expanded WDS permitting requirements. The California American Water (Cal-Am) main system, which is the largest WDS in the District, accounted for 11,862 AF, or approximately 90% of the total production reported by WDSs in WY 2011.
RECOMMENDATION: This report is for informational purposes only. The Board should review the draft summary report and provide staff with any comments or questions. Staff will complete and file the final report, incorporating any late revisions, if this item is approved with the Consent Calendar.
BACKGROUND: All owners and operators of WDSs within the District are required to annually submit water production information to the District. In 1980, District Ordinance No. 1 defined a WDS as works within the District used for the collection, storage, transmission, or distribution of water from the source of supply to the connection of a system providing water service to any connection including all water-gathering facilities and water-measuring devices. Therefore, all wells within the District are considered to be WDSs. However, until the adoption of Ordinance No. 96 in 2001, only multiple-parcel WDSs were required to obtain a permit from the District. Other refinements to the Rules and Regulations governing WDSs were added with the adoption of Ordinance No. 105 in 2002; Ordinance No. 106 in 2003; Ordinance No. 118 in 2005; and Ordinance No. 122 in 2006.
Three new single-parcel WDSs (i.e., the Burleigh, Quail Meadows Drive and Regan WDSs) were established in WY 2011. All of the potable water produced by the Sand City Desalination Plant was provided to the Cal-Am main system, and therefore, that amount (275.7 AF) is accounted for as Cal-Am main system production. 51.0 AF produced by the District’s ASR-1 well was also provided to Cal-Am and accounted for in Cal-Am’s main system production. It is also noted that in WY 2005, the Cañada Woods Alluvial, Cañada Woods Upland and Monterra Ranch WDSs were merged into the Cañada Woods Water Company WDS, although they are reported separately here to facilitate comparisons from one year to another.
Each WDS must report the amount of water produced and where required, the amount of water delivered, in addition to the number of existing and new connections served during the reporting period. The information for WY 2011 is summarized in Exhibit 5-A. The WDSs shown are grouped by source area. This information is also incorporated into the District-Wide Water Production Summary Report, presented as Item 6 of the Consent Calendar of this packet. For comparative purposes, the Annual WDS Production Summary Report for WY 2010 is provided as Exhibit 5-B. Note that the version of the Annual WDS Production Summary Report for WY 2010 presented here has been revised since it was originally presented to the Board on April 18, 2011, based on information received since that time.
Production figures for three WDSs -- Bishop, Ryan Ranch, and Hidden Hills Units -- are reported separately from the Cal-Am main system, although Cal-Am owns and operates each of these satellite units. The Ryan Ranch Unit was acquired and annexed into the Cal-Am system in November 1989. The Hidden Hills Unit, which formerly reported as the Carmel Valley Mutual Water Company, was acquired and annexed into the Cal-Am system in March 1993. The Bishop Unit, which has been operated by Cal-Am since September 1996, was acquired and annexed into the Cal-Am system in July 1999. Although water production and delivery values for the Bishop, Hidden Hills and Ryan Ranch Units are reported separately from the values for Cal-Am’s main system in this report, they are included in Cal-Am’s total production in the District-wide Production Summary Report (Exhibit 5-A) as “Cal-Am Wells Outside the Water Resources System”. In WY 2011, 84.95 AF of water were produced from wells in the former Water West WDS, which was acquired and annexed into the Cal-Am service area in 1989 and integrated into Cal-Am’s main system in 1993. Water delivered to the former Water West WDS is incorporated into Cal-Am's main system delivery total in this report and in Exhibit 5-A of the District-wide Production Summary Report. The former Rancho Fiesta WDS is also included as part of the Cal-Am main system, because all water delivered to customers within the former service area of this system was produced from sources that serve Cal-Am’s main system and the Rancho Fiesta production wells have been inactive for more than 10 years. For WY 2010 and WY 2011, all deliveries and connections to Rancho Fiesta customers were incorporated into totals for the Cal-Am main system.
The production shown in Exhibit 5-A for Monterra Ranch includes water produced from wells that was sent to the system’s reverse osmosis (RO) desalination plant and un-treated water that was produced for non-potable purposes. For WY 2011, the reported percentage of unaccounted water for Monterra Ranch represents a comparison of the amount of RO plant and brine production (45.73 + 9.98 AF) minus metered consumption and brine production (34.54 + 9.98 AF) divided by RO plant and brine production (45.73 + 9.98 AF). This percentage does not include the amount of non-potable water produced by wells that was not sent to the plant (24.38 AF).
District-wide - Total WDS production within the District for WY 2011 was 13,162 AF. Of this total, the Cal-Am main system (i.e., not including the Bishop, Hidden Hills and Ryan Ranch Units) accounted for 90% of the water produced by WDSs within the District. The other 116 systems (i.e., including the Bishop, Hidden Hills and Ryan Ranch Units) accounted for the remaining ten percent of production. Total WDS production for WY 2011 is 57 AF (<1%) less than the production reported for WY 2010. During WY 2011, Cal-Am’s main system production decreased by 142 AF (1%), while reported non Cal-Am WDS production increased by 75 AF (6%), relative to production in WY 2010.
Monterey Peninsula Water Resources System (MPWRS) - Total WDS production from the MPWRS, which includes the Carmel River and its tributaries, the Carmel Valley alluvial aquifer, the Seaside Groundwater Basin was 12,248 AF in WY 2011. Total WDS production within the MPWRS decreased by 144 AF (1%) in WY 2011 compared to production in WY 2010. More specifically, production for Cal-Am’s main system in WY 2011 was 142 AF (1%) less than production in WY 2010, and combined production from 21 other active systems within the MPWRS increased by 2 AF (<1%), relative to production reported for WY 2010.
The comparisons above do not include production from Cal-Am’s satellite systems (Bishop, Hidden Hills and Ryan Ranch Units) that derive their source of supply from the Laguna Seca Subarea (LSS) of the Seaside Groundwater Basin, which was outside the MPWRS as defined prior to WY 2008. The LSS was added to the MPWRS with the adoption of Ordinance No. 135 on September 22, 2008. Because the LSS was added to the MPWRS late in WY 2008, another set of comparisons is presented below that includes production from the LSS. When the LSS is included in calculating production from the MPWRS, the comparisons of WY 2011 to WY 2010 are as follows. Total WDS production within the MPWRS (including LSS) decreased by 188 AF (1%) in WY 2011 compared to production in WY 2010. In WY 2011, production by Cal-Am from within the MPWRS (including LSS) decreased by 190 AF (1%) and the combined production from 22 other active systems within the MPWRS (including LSS) decreased by one AF (<1%), relative to production reported for WY 2010.
5-A Water Production Summary Report for Water Distribution Systems for Water Year 2011
5-B Water Production Summary Report for Water Distribution Systems for Water Year 2010
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