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1 - <br /> _` - -A WGERAGHTY <br /> A- V& MILLER INC. <br /> Environment and Infrastructure LN. X0'1" ll FAL IK-i LT1 i <br /> a`heidemij company <br /> October 31, 1996 <br /> NnV 51 P11 2 38 <br /> Project No. RC0309.004 <br /> Ms.Mary Meays <br /> San Joaquin County Environmental Health Division <br /> 304 East Weber Avenue,P.O.Box 388 <br /> Stockton,California 95201-388-- <br /> (209)468-0337 <br /> SUBJECT: Request for Permit Revision,Chevron Service Station#9-4275, 2905 West Benjamin <br /> Holt Drive,Stockton,California. <br /> Dear Ms.Meays: <br /> Enclosed you will find the approved well-drilling permit for the remediation wells to be <br /> installed as part of the implementation of Geraghty&Miller's Work Plan for Soil and Groundwater <br /> Remediation Services at the above-referenced site dated August 31,.1995. In addition to the six <br /> borings already approved(ten air-sparging wells and six soil-vapor,extraction [SVE] wells),.Geraghty <br /> &Miller would like to install an additional boring as shown on the enclosed revised Figure 1. The <br /> total number of SVE wells will be seven,and the total number of air-sparging wells will remain at ten <br /> (seven shallow and three deep). <br /> Four of the seven soil borings will be double-completion wells, consisting of one SVE well: <br /> and one air-sparging well. The remaining three soil borings will be completed with two air-sparging <br /> wells and one SVE well each. The revised Figure 1 shows the placement of the double- and triple- <br /> completion wells. <br /> As discussed in our telephone conversation today,the drilling subcontractor will be Western <br /> Strata Exploration (WESTEX), P.O. Box 1664, West Sacramento, CA 95691; License No. <br /> C57-552198. <br /> Please send us an updated permit approval at your earliest convenience. Should you have <br /> further questions,please contact the undersigned. <br /> Sincerely, <br /> GERAGHTY&MILLER,INC. <br /> Aaron O'Brien <br /> Xjgineer <br /> nroject Scientist/Project Manager <br /> Attachments: Revised Figure 1 Proposed Remediation Wells <br /> Attachment 1 Approved Well Permit Application <br /> cc: Brett Hunter,Chevron Products Company <br /> GM�tJCHM N .DATA•CHEVRON:CHEV N-Z•ABFNlA6f:WELLDRLG:AddOnPmtt <br /> 05 Marina Way South•Richmond, California 94804•(510) 233-3200•FAX (510) 233-3204 �.«1 <br />