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Finding: Changes or alterations have been required in, or incorporated into, the project which avoid or substantially lessen the significant environmental effect as identified in the FEIR. These mitigation measures are listed below. Statement of Fact: This impact will be reduced by the following: Refer to impact C-6 for discussion of mitigation measures to be implemented. F. WATER RESOURCES F-1 Potentially Significant Impact: The project proposes to contain and utilize all runoff from Jahant Slough. Currently during dry and normal years, most of the runoff from Jahant Slough is trapped in Tracy Lakes and does not flow into the Mokelumne River. During wet or above average rainfall years, Tracy Lakes fill and some water is released into the Mokelumne River. Under project Conditions, which call for deepening Tracy Lakes, during wet or above average winters Tracy Lakes would trap water that would normally drain into the Mokelumne River and then into the Delta. However, during very wet years Tracy Lakes would not be able to store all of the runoff and water would be released into the Mokelumne River. Thus, during years of average and slightly above average rainfall, the water containment would impact the outflow to the Mokelumne River and the Delta. Finding: Changes or alterations have been required in, or incorporated into, the project which avoid or substantially lessen the significant environmental effect as identified in the FEIR. These mitigation measures are listed below. Statement of Fact: This impact will reduced by the following: Prior to recordation of the final map, the applicant shall obtain an appropriative water right permit for the State Division of Water Rights for the increased storage of runoff from Jahant Slough or from diversion of runoff from the Mokelumne River. This will include the completion of any studies, as required by the Division of Water Rights, including the determination of the availability of such water in Jahant Slough and the lower reaches of Mokelumne River for appropriation. F-2 Potentially Significant Impact: The prosect seeks to augment runoff either by pumping water from the Mokelumne River or by utilizing groundwater. The project would increase the demand for pumping groundwater or summer riparian diversions during dry and drought periods. If the project takes water under a riparian right, it may impact other downstream users and habitats by diverting a significant percentage of the dry season stream flow. Many of the surrounding farmers depend upon groundwater for agricultural production. If large amounts of groundwater are pumped during extended droughts, this could produce a drawn-down effect on nearby wells and impact the production of off-site wells. Finding: Changes or alterations have been required in, or incorporated into, the project which avoid or substantially lessen the significant environmental effect as identified in the FEIR. These mitigation measures are listed below. Statement of Fact: This impact will be reduced by the following: —7—