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10/17/2007 14:37 FAX 2094683163 sic-COMM-DEV IA 010/013 <br /> 1%� w�. <br /> several decades. In c,oji_rag,_the water dgmand_for the DeSilva Gates Quarry will only be <br /> approximately 200 to 400 grin.substantially less than die pumping rates evaluar de__ in the <br /> RMC Pacific EIR.Hydrographs of wells in the area indicate that, while water levels have <br /> Guctuated somewhat over the last 45 years.there has not been a substantial dechnin ' <br /> rgyl or umula ve impact on ¢rouodwate lev_„els in lheL vi inity of the ronased r 'e <br /> Cl�9 tewe ack pf evidence(list the-aro�Qscdpry�ect will result in a sianifi=h3l act ty/ <br /> roup waters Iv ha_ter 3H,"Groundwater and Groundwateruali "addresses _.- oeleeea,p'teeC4�aw, �.rhun,, ,! <br /> this issue and provi, a mi[ �o�r Specifically,Mitigation Measure GW-3 1ed 'a"y 'e`a'r <br /> beginning on page 314-9 states the following: rWA4v Parole and <br /> ran <br /> :a••ordhn d" <br /> • nrpur�b+Nrv'er�!ib'eNdditaouiif. '�:'i <br /> ■ Limit the depth of excavation,as determined y San Joaquin County,until <br /> corrective measures ere approved by San Joaquin County and implemented by <br /> the Operator. <br /> ■ Lower a well pump for any well where groundwater levels are reduced by the <br /> mining activities. <br /> ■ Deepen any well where lowering of a well pump is infeasible to maintain well <br /> capacity. <br /> ■ Replace any well for which all preceding measures fail to mitigate loss in well <br /> capacity. <br /> ■ Provide an alternative water supply to any property where the preceding <br /> measures fail to mitigate loss in well capacity or water supply caused by the <br /> mining activities. <br /> ■ Perform any combination of the preceding actions,or other measures, <br /> necessary to restore loss in a water supply attributed to the mining activities. <br /> jn addition,see the response to. qupent 12 below. ____...... :h�•r v'rs l�tai!+wa i <br /> .. lur•1re'11't'iaq.etne�timNMiY.ame <br /> he byuiMvd4tMdeli li'.J''..'.!i,i <br /> Response to Comment 11 trx •s (;bj'ep66s; ;p;;;;;;;;;i <br /> Quality," the draft EIR. County °itrin ,�. p Imo•• <br /> The CountyGeneral Plan lie Policy 11)referenced by commenter a deka, .how•r.gess <br /> policy appears in Chapter me <br /> 3.G,"Surface Hydrology,Stormwater,and Water •� �•ta�R 'aR "II" <br /> "Localrat EIR in Chapter 3. ' <br /> 4 off the Draft ft HGroundwater and Groundwater Quality,"under <br /> , •�l�brlthelv�blia, , <br /> p groundwater quantity and quality are described beginning on page 3_H- +•neb�k r :u: ,. ;; <br /> Mitigation measures to address groundwater protection are provided in Chapter 3.H, <br /> "Groundwater and Groundwater Quality,"beginning on page 3.H-7 through 3.H-10 of <br /> the Draft EIR,which consist of: <br /> • Mitigation Measure GW-la: Monitor Groundwater Quality;implement Measures <br /> to Maintain Groundwater Levels as Necessary <br /> • Mitigation Measure GW-lb: Maintain Well Offsets <br /> • Mitigation Measure GW-3: Monitor and Report Groundwater Levels;Implement <br /> Measures to Maintain Groundwater Levels as Necessary <br />