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r r r r r r r r r r i i r r r r r r r 2.Executive Summary TABLE 2-1 (CONTINUED) SUMMARY OF IMPACTS AND MITIGATION MEASURES Environmental Impact Mitigation Measures Level of Significance (Level of Significance Prior to Mitigation) After Mitigation water flows from the reach of Hospital Creek downstream mining both sides with a 100-foot setback from the Creek under Mining Plan Option 2. of the proposed mining operations leading to depletion of centerline of the creek to the top of the mining slope. Implementing Mitigation Measure flows to downstream receiving water bodies,reduction of 4.6.6 would ensure that significant surface water available for localized infiltration,or impacts related to Mining Plan elimination of adequate water flow for aquatic and Option 2 would not occur,However, riparian habitats.This would be a significant impact.(S) if Mitigation Measure 4.8.6 is not implemented and Mining Plan Option 2 is identified as the preferred approach to mining adjacent to Hospital Creek,then the impacts to hydrology,as described above,would remain significant. 4.8.7 Mining operation would alter the natural,preferential flow No mitigation is required. pathways of surface water resulting in areas of localized onsite flooding.This is a less-than-significant impact.(LS) Biological Resources 4.9.1 Project activities could potentially result in direct and 4.9.1 The project applicant shall ensure that any loss of waters Less than Significant indirect impacts to"waters of the U.S.".This is a of the U.S.shall be compensated for by the preservation potentially significant impact.(PS) or creation of similar habitat at a ratio no less than 1:1, prior to construction.This preservation and/or creation of wetlands may occur either on-site,at an off-site location, or at an ACOE approved mitigation bank.To ensure mitigation of habitat similar to that impacted by Mining Plan Option 2,if this mitigation occurs off-site and not at a mitigation bank,the mitigation shall be located on alluvial fans or terraces in either western San Joaquin or Stanislaus Counties.Permits secured for the project may require higher ratios. 4.9.2 Project activities could result in adverse impacts to 4.9.2a Conditions on the project site currently provide habitat for Less than Significant special status-species covered under the SJMSCP.This San Joaquin kit fox.Site conditions will change over the is a potentially significant impact.(PS) 26-to 60-year life of the project;therefore,the following mitigation measures shall be implemented prior to implementation of any Phase of mining. RMC Pacific vernalis Ouany Mining and Reclamation Protect 2-17 ESA/Project No.2(I(13015 Draft Environmental Impact Report May 2006