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Executive Summary <br /> TABLE 2-1 (CONTINUED) <br /> SUMMARY OF IMPACTS AND MITIGATION MEASURES <br /> Environmental Impact Mitigation Measures Level of Significance <br /> (Level of Significance Prior to Mitigation) After Mitigation <br /> The EPRP shall be provided to all employees and a copy shall be <br /> provided to local fire and rescue departments as well as to the facility <br /> file at the County of San Joaquin Community Development <br /> Department. The applicant shall update and redistribute when <br /> information changes or revisions are necessary. <br /> Hydrology And Water Quality <br /> 4.8.1 Groundwater seepage that enters the mine excavation 4.8.1a Excavation/Groundwater Separation.The project applicant,shall,at Less than Significant <br /> and inundates the active and reclaimed mining phases no time,extend the depth of excavation below the depth of the water <br /> would cause groundwater losses due to evaporation, table and shall maintain a vertical separation between the water table <br /> threaten groundwater quality,and disrupt mining and and the active mining surface. Determination of the water table depth <br /> future reuse operations.This would be a potentially shall be based on historic regional groundwater levels for the <br /> significant impact. (PS) unconfined aquifer. The vertical separation shall be determined <br /> appropriate by a California-certified hydrogeologist or civil engineer <br /> but shall not be less than five feet. <br /> 4.8.1b Groundwater Elevation Monitoring Schedule.The applicant shall <br /> monitor groundwater to ensure that the vertical separation between <br /> the nearest groundwater surface and the lowest point of the active <br /> excavation and reclaimed phases is maintained as required by the <br /> Califomia-certified hydrogeologist and at no less than five feet. The <br /> groundwater levels shall be monitored on-site prior to and during all <br /> phases of excavation,prior to the initiation of excavation for each <br /> phase,and in the reclaimed phases. Groundwater shall be <br /> continually monitored in the active mining area on a bimonthly basis, <br /> within a week following each large rainstorm from October through <br /> April,and monthly during the remainder of the year. Reclaimed <br /> phases shall be monitored once monthly. Monitoring technique shall <br /> be based on recommendations and approval by a California-certified <br /> hydrogeologist. <br /> Cemex Vamalis Quart Mining and Redanetlon Project ES-13 ESA 1203015 <br /> Final Environmental Impact Report June 2008 <br />