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HARBOR BLVD. MIXED USE TRANSIT CORRIDOR PLAN FINAL FIR <br />CITY OF SANTA ANA <br />5. Environmental Analysis <br />UTILITIES AND SERVICE SYSTEMS <br />MWD sells surplus water — when available — to member agencies, who reduce groundwater production in <br />exchange for the surplus water. Thus, groundwater is left in local storage for future use. <br />Imported Water <br />The City of Santa Ana is a member agency of MWD. Imported water provided to Santa Ana is treated at <br />MWD's Robert Diemer Filtration Plant north of Yorba Linda. The City participates in MWD's Conjunctive <br />Use Program, which uses allows for the storage of surplus imported MWD water in the Basin to maintain <br />reliability during dry, drought, and emergency conditions. <br />Imported WaterRedrabiht7 <br />MWD's State Water Project (SWP) supplies have been impacted in recent years by restrictions on SWP <br />operations pursuant to biological opinions of the U.S. Fish and Wildlife Service and National Marine Fishery <br />Service in 2008 and 2009, respectively. In dry, below normal conditions, MWD has increased the supplies <br />received from the California Aqueduct by developing flexible Central Valley /SWP storage and transfer <br />programs. The goal of the storage /transfer programs is to develop additional dry year supplies that can be <br />conveyed through the available Banks pumping capacity to maximize deliveries through the California <br />Aqueduct during dry hydrologic conditions and regulatory restrictions. <br />In June 2007, MWD's Board approved a Delta Action Plan that provides a framework for staff to pursue <br />actions with other agencies and stakeholders to build a sustainable Delta and reduce conflicts between water <br />supply conveyance and the environment. The Delta action plan aims to prioritize immediate short -term <br />actions to stabilize the Delta while an ultimate solution is selected, and mid -term steps to maintain the Bay <br />Delta while the long -term solution is implemented. The City projects that imported water available to the City <br />will increase slightly from 18,050 acre -feet per year (afy) in 2015 to 19,038 afy in 2035. <br />Projected City Water Demand <br />Existing and forecast water demands available to the City are shown below in Table 5.14 -1. In Santa Ana, <br />water demand equals supply, due to the fact that unaccounted -for system losses are aggregated with <br />distribution deliveries and because of the presence of a large groundwater basin, it is not necessary for the <br />City to maintain any large aboveground storage reserves for consumptive uses. As shown in Table 5.141, the <br />current demand is estimated to be 46,800 ACY for the year 2010, increasing to a demand of 50,400 ACY in <br />the year 2035. The City's demand is currently met through a combination of 62 percent local groundwater, 38 <br />percent imported water, and less than 1 percent recycled water. This assumes a 7.7 percent growth rate within <br />the next 25 years, which equates to an annual growth of 0.30 percent per year. <br />Table 5.14 -1 Existinq and Forecast Water Supplies <br />Soumz: Malcolm Pirnle 2011 <br />Page 5.14 -2 PlaceWorkr <br />2010 <br />1 2015 <br />1 2020 <br />1 2025 <br />1 2030 <br />1 2035 <br />Groundwater <br />28,894 <br />29,450 <br />29,822 <br />30,256 <br />30,628 <br />31,062 <br />Imported Water <br />17,710 <br />18,050 <br />18,278 <br />18,544 <br />18,772 <br />19,038 <br />Recycled Water <br />196 <br />300 <br />300 <br />300 <br />300 <br />300 <br />Total Demands <br />46,800 <br />47,800 <br />48,400 <br />49,100 <br />49,700 <br />50,400 <br />Soumz: Malcolm Pirnle 2011 <br />Page 5.14 -2 PlaceWorkr <br />