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STATE OF CALIFORNIA GEORGE DEUKMEJIAN,Governor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD— <br /> CENTRAL 'VALLEY REGION <br /> 3443 R�OUTIER ROAD <br /> SACRAMENTO,CA 95827-3098 <br /> ' ,:.'_,, !tip � .� .��♦..a' 1 <br /> 7 December 1989 DEC 1 1 1909 <br /> ENV!R0IN;Ike:cN T AL �-:E L.'!11 <br /> PERM!T/SERVICES <br /> Mr. Carlo Marianne <br /> Stockton Scavenger Association <br /> 1240 Navy Drive <br /> Stockton, CA 95206 <br /> STOCKTON SCAVENGER ASSOCIATION 1240 NAVY DRIVE, STOCKTON - WORK PLAN FOR <br /> ADDITIONAL GROUND WATER INVESTIGATION <br /> We have reviewed the 28 November 1989 work plan for additional ground water <br /> investigation prepared by Norcal Solid Waste Systems, Inc. , for this site. <br /> The work plan proposes several phases of investigation to include a Hydro- <br /> Punch investigation, monitoring well installation and sampling, aquifer <br /> testing and report preparation. <br /> We agree with the concept of a phased investigation for this site. However, <br /> because the source of the high levels of benzene contamination has not yet <br /> been identified, we request that an interim report be prepared as soon as the <br /> analytical results for the first round of sampling the new monitoring wells <br /> are available. The analytical results for the second round of sampling may be <br /> submitted in an addendum report which should include conclusions and any <br /> recommendations for additional investigation. The proposal did not include a <br /> proposed timetable for completing this investigation. However, we believe the <br /> investigation could be completed, and a Problem Assessment Report submitted by <br /> 2 March 1989. <br /> Please proceed with the investigation and submit the results of Phase I (the <br /> Hydro-Punch investigation) with proposed monitoring well locations by <br /> 31 January 1990. <br /> If you have any questions, please call me at (916) 361-5731 . <br /> THOMAS D. PELTIER <br /> Engineering Geologist <br /> TDP//tdp <br /> cc: ✓Ms. Laurie Cotulla, San Joaquin County Department of Public Health <br /> Services, Stockton <br /> Mr. Michael Caprio, Norcal Solid Waste Systems, Inc. , San Francisco <br />