SU0004098 - Laserfiche WebLink

Home Browse Search

1D/17/2007 14:36 FAX 2094883163 SJC_COMM_DEV ]a 007/013 1� ..e • Perform any combination of the preceding actions,or other measures,necessary to restore loss in a water supply attributed to the mining activities. These measures would be subject to the review and approval of the County before implementation,which would ensure consistency with the San Joaquin County General Plan. In any case,as a performance standard,these measures would bring groundwater levels back into the range of historical fluctuations,or functionally replace any wells the capacity of which had been impaired by the mining Project. If the adopted mitigation were shown to be ineffective in reducing impacts to a less-than-significant level,San Joaquin County would retain authority to require supplemental or additional mitigation measures to mitigate the impact. Response to Comment 4 (ltaI I`111-1 t,gluip:'Hsu` aP j�+e�' pr 5siakis^9n't600a cobklh;'o89 ��i !, Response to Comment 5 As disclosed in Chapter 2,"Project Description,"on page 2-5 of the Draft EIR,the project applicant proposes to either dry mine the site(referred to as Dry Pit Operations) and dewater the pit or may elect to wet mine the site(referred to as Wet Pit Operations), based on the actual amount of groundwater encountered. Both types of mining operations are expected to encounter groundwater at depths of approximately 75 feet AMSL. As described in the quarry excavation application(Appendix C to the Draft EIR),wet pit operations may be carried out in addition or in place of dry pit operations at the discretion of the Applicant,and for this reason,this EIR assessed the impacts of both mining methods. For the discussion in the Draft EIR of the following impacts related to surface hydrology, stormwater, and water quality from both dry and wet pit mining,,please refer to Chapter 30,"Surface Hydrology,Stormwater,and Water Quality,"on pages 3G-8 through 3G-12 of the Draft EIR.The following impacts are disclosed: • Impact WQ-L• Construction-Related Water Quality Degradation(Less than Significant) • Impact WQ-2: Drainage and Surface Water Quality Impacts during Operation and Reclamation(Less than Significant), • Impact WQ-3: Surface Water Quality Degradation from Dewatering(No Impact) • Impact WQ-4: Flooding Hazards(Less than Significant) • Impact WQ-5: Effects of Tsunami or Mudflow(Less than Significant) • Impact WQ-6: Effects of Seiche(Less than Significant with Mitigation) • Impact WQ-7: Surface Water Supply Impacts during Operation and Reclamation (No Impact) For the discussion in the Draft EIA of the following impacts related to groundwater and groundwater quality from both dry and wet pit mining,please refer to Chapter