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· Will the wells be used to meet maximum day demands or salt management purposes? <br /> · New wells without treatment will worsen delivered water quality. <br /> · Past commitments regarding groundwater pumping are just now being implemented. <br /> · A need for contractual commitments before additional wells are operational. <br /> <br />Mr. Cusenza also stated Pleasanton believes that the Well Master Plan EIR certification should <br />be delayed until commitments or agreements are in place concerning the projects. There should <br />be a commitment to work on changes to policies and operations in short term that would improve <br />delivered water quality by maximizing surface water deliveries, and minimizing groundwater <br />use. There should also be a commitment to review policies, operations, and timing for water <br />quality improvement projects and to reach an agreement on contractual language. <br /> <br />Chair Hosterman thanked both Mr. Requa and Mr. Cusenza for their presentations. She asked if <br />there were any questions. <br /> <br />DSRSD Director Hansen asked how water quality improvements today are affected by facilities <br />hardware as opposed to how the hardware is operated? District Engineer Requa responded that <br />the Zone has surface and groundwater plants and because of existing capacity limitations they <br />must operate both in the summer. With more treatment capacity, less pumping will be required. <br />However, he did note that wells are pumped not only for supply reasons but also for salt <br />management reasons. <br /> <br />Zone 7 Director Quigley asked Mr. Requa if the tools to be used at the plants to improve surface <br />water quality are different fi.om those used to treat groundwater? Mr. Requa answered yes it <br /> <br />Zone 7 Director Marchand acknowledged that hardness is a problem with groundwater but noted <br />that as you increase the amount of surface water delivery there will be significantly more <br />expense and a different technology, ozone, must be used to solve the odor problems. Until the <br />Altamont plant comes on line and the ozone is in place, as you increase the surface treatment, <br />you will potentially increase the number of the taste and odor complaints. He noted that taste <br />and odor complaints do not come from well water but rather from the surface water. Also, <br />surface water is softer water but has a greater chance for taste and odor. On the other hand, well <br />water does not have the taste and odor problems but is always hard. When you take care of one <br />problem, you can increase the problem in another area. <br /> <br /> DSRSD Director Hansen asked if the Zone operates their system to equalize delivered water <br /> quality throughout the Valley? Mr. Myers answered yes; the ideal is to minimize the <br /> groundwater which is used as a last resort. <br /> <br /> Pleasanton Councilmember Sullivan asked Mr. Cusenza if the Zone's short term plan to address <br /> the water quality issues of taste, odor and hardness are compatible with the Zone's adopted long- <br /> term plans to build new facilities and, if so, how will those facilities be operated and the water <br /> distributed? Mr. Cusenza responded that a commitment is needed by the Zone to operationally <br /> do everything they can from a surface water standpoint to evenly deliver the water to the Valley. <br /> He noted that in the short term we need to understand Zone 7's hydraulics - if the Zone does not <br /> have the treatment capacity, you cannot get the surface water across the Valley. Also, if you <br /> <br /> <br />