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N <br /> Advanced <br /> GeoEnvlronmental, Inc. =0- <br /> ( D <br /> 18 September 2002 C Lr <br /> -AGE-NC Project No. 99-0645 <br /> SEP 2 o zooz <br /> Ms. Margaret Lagorio r !V'1R.0RMENT HEALTH <br /> San Joaquin County Environmental Health Department PERNMITISEHViCES <br /> 304 E. Weber Avenue, Third floor <br /> Stockton, California 95202 <br /> Subject: Work Plan Addendum - Site Assessment and Feasibility.Analysis <br /> Former MEL BOKIDES PETROLEUM - LINDEN <br /> 8203 East Highway 26, Stockton, California <br /> Dear Ms. Lagorio: <br /> At the request ofMr.Nick Bokides of Mel Bokides Petroleum(MBP),Advanced GeoEnvironmental, <br /> Inc. (AGE) has prepared the following addendum to the site assessment and soil vapor extraction <br /> feasibility work plan, dated 12 August 2002, for 8203 East Highway 26, Stockton, California; the <br /> addendum addresses work-plan concerns expressed by the San Joaquin County Environmental Health <br /> Department (EHD) in a letter dated 05 September 2002. <br /> The original work plan detailed the design of a soil vapor extraction (SVE) feasibility pilot test and <br /> additional site assessment for the petroleum hydrocarbon-impact to soil at the site. However, as part <br /> of MBP's site redevelopment into an active card-lock gasoline station, a new underground storage <br /> tank(UST)was to be installed in the area of the former USTs location,therefore,the proposed vapor <br /> extraction well locations within the new UST area need to be relocated outside of the new UST <br /> location. In addition, as stated in the subsequent AGE-prepared Replacement of Well MW-1, dated <br /> 15 August 2002,ground water monitoring well MW-1 will be relocated, from inside the former UST <br /> excavation to a location down-gradient of the former UST excavation. <br /> The following procedures will be amended- <br /> • The shallow and deep SVE wells located within the proposed UST area in the original work <br /> plan will be relocated to an area directly east of the new UST area. In addition,the proposed <br /> shallow and deep SVE wells located north of well MW-2, as well as existing well MW-1,will <br /> be relocated east of the proposed UST area (Figure 2). The new location for well MW-1 <br /> precludes the necessity of the easternmost soil boring proposed in the original work plan. <br /> 837 Shaw Road,Stockton, California 95215 <br /> Telephone(209) 467-1006 FAX(209)467-1118 <br />