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—may rrKl 11 :51 WALLACE—KLIHL & ASSOC. 9113-r29065 <br /> P. 02 <br /> P <br /> WALLACE- KUHL <br /> &ASSOCIATES INC- <br /> September 2, 1994 <br /> Mr. Russel Chapin, Sr. <br /> Chapin Brothers <br /> 1203 North Carlton Avenue <br /> i <br /> Stockton, California,,-95203 <br /> RE: 1766 MONTE DIABLO AVENUE <br /> Stockton, California <br /> WKA No. 3PR9418$ ` <br /> Dear Mr. Chapin, <br /> At your request, we have prepared this outline of tasks for your Request For <br /> Proposal (RFP) for a Remedial Feasibility Study (RFS) and .Final Remediation <br /> Plan (FRP) for the property. This outline is based on previous work <br /> performed at the site, including the PAR prepared by Seacor. <br /> I <br /> The vapor extraction pilot test performed by Seacor was inconclusive, <br /> probably due to the location of vapor extraction wells VI and 'V3 installed in <br /> Geotechnical Engineering {� <br /> or in the immediate vicinity of pea gravel backfill material) and/or poor well <br /> ltlgil�rer;t ;Cietllugy construction, 'Therefore, we recommend installing an additional vapor <br />! Envirun,nenliad Cum+ulii„g extraction well and a minimum of two observation wells. Existing vapor <br /> ._ w. ..._ extraction well VW2_and.ground water mgnitoring=well MW4 ma be used as <br /> Tt Remediation Services "� "' --� <br /> observation wells and possible extraction wells, A minimum of one air <br /> Consmicrion Inspection sparging well and three air sparging observation wells will be needed in order <br /> to adequately perform the air sparging feasibility test, <br /> �nt Materials Testing <br /> The RFPs should contain at a minimum the following tasks: <br /> 3i?50[nduarrial blvd. <br /> tk4 u'esracam�ttro Task 1: Prepare a Workplan and Acquire Necessary Permits <br /> CA 95691 <br /> Fan 916,372-2565 <br /> 916.371.1434 <br /> i <br /> ;I <br />