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water supply picture. She discussed stresses on species and said uncertain is the impact of the <br />water project pumps. Other threats which are non-regulatory are the deteriorating water quality <br />in the Delta, climate change, increased rainfall, increased salinity, multiple fault lines which run <br />through or near the Delta and earthquake risks. <br />Regarding legal aspects and the Wanger decision, a Federal judge ruled on a biological opinion <br />that was meant to help the endangered Smelt to survive. She explained the operation of the <br />pumps out to sea and based on the tide flows, it has created a saline estuary. When they pump <br />the water through the Delta, it is the strength of the pumps that moves the water which tends to <br />create reverse flows in two channels which become problematic for the Delta Smelt. They get <br />caught, pulled in and killed. The Wanger ruling said, based on certain ecological conditions in <br />the Delta favorable to the Smelt and because of the impacts of the pumps on the Smelt, water <br />supplies need to be cut back at various times of the year. It is about a 30% supply cut to the <br />system. For Zone 7, it would equate over time to 6,000 acre feet of water throughout their <br />planned build-out. If restrictions stay in place, by 2030, they would have a deficit of about 7-9% <br />of water supplies, with further impacts during drought years. <br />She said voluntary water conservation could help them recover supply or deal with cuts should <br />they be prolonged, there are opportunities to develop other water supplies such as recycled <br />water, they are drilling additional ground water wells to help protect the system against <br />unplanned outages of the State water project as well as some supply distribution improvements <br />to move the water from the west to the east side, and are re-evaluating local storage options. <br />They are working to resolve the issue by working with the resource agencies to come up with a <br />different way to plan habitat programs and deal with water and fish conflicts called, the <br />Operational Criteria and Planning process, which would go into effect in late 2008 after the <br />pumping cutback expires. The plan would provide regulatory coverage through 2010; long-term <br />stabilization focuses on the Bay Delta Conservation Plan which is a habitat plan at the federal <br />level and a natural communities conservation plan at the State level. <br />Ms. Namath said interim actions to help stabilize fish and water supplies include scientific <br />research on Smelt, some work to restore Smelt habitat in the north part of the Delta, and <br />opportunities to prevent the spread of invasive species to the food network of Delta fish. She <br />presented near-term water supply efforts such as dual conveyance in the Delta, and said the <br />Department of Water Resources has initiated the EIR process for the Bay Delta Conservation <br />Plan. <br />Mayor Hosterman questioned the impacts to Pleasanton and confirmed the City would have a <br />35% water allocation if the current weather pattern continued. Supplies can be carried over in <br />years the City does not use it to move it into the system, and Ms. Namath estimated that they <br />will be able to meet supply needs with surface water. She said what the ruling does for <br />Pleasanton in the near-term is it forces Zone 7 to rely on drought supplies into the future in a <br />way they had not anticipated and water conservation would need to be instituted by the <br />community through an additional 10%. There are many small ways to conserve water such as <br />checking toilet tank leaks, watering during the cool parts of the day, low flow toilets and shower <br />heads, high efficiency washing machines, and they are looking at tools to irrigate more <br />efficiently. <br />Public Works Director Wilson said the City will have on its website a water conservation guide <br />and said staff is also working with the Tri-Valley Water Retailers Group and will put out a joint <br />message to talk about conservation efforts. <br />City Council Minutes 4 March 18, 2008 <br />