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pe/p2 '00 WED 15 38 FAX 19259469968 ERNWEST WC 4hO02 <br /> Ennrommental <br /> *� Reso�xcea <br /> Jr <br /> Management <br /> 1777 Botelhe Dn.ve <br /> 0 Suite 260 <br /> WaInuk Creek,CA 94596 <br /> (925)9464DM <br /> (975)9469966 Mix) <br /> 9 February 2000 <br /> Mr Marty Hartzell <br /> California Regional Water Quality Control Board <br /> Central Valley legion <br /> 343 loutier Road,Suite A ERM. <br /> Sacramento,CA 95827-MI5 <br /> Subject- Supplemental Information <br /> 1325 and 1515 West Weber Avenue <br /> Stockton,California <br /> Dear Mr Hartzell, <br /> On he-half of Catellus Development Corporation(Catellus),ERM subrruts <br /> the enclosed technical memoranda for the subject properties in response <br /> • to your 21 December 1999 request for additional informatwn to support <br /> your evaluation of the Request for Site Closure Concurrence (San Joaquin <br /> County Public Health Services Environmental Health Division, <br /> December 1999) <br /> Specifically,thesis memoranda address <br /> 1 The potential presence of ground water wells within a 2,000-foot <br /> radius of the site, <br /> 2 An estimate of the volume of contamination remaining in the ground <br /> water, <br /> 3. An estimate of the length of time it will take residual ground water <br /> concentrations to achieve water quality standards, and <br /> 4. A health risk assessment for site soils and ground water <br /> Additional requested information regarding the July 1999 gmund water <br /> sampling procedures was previously provided via facsimle. Please feel <br /> i <br />