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f _ <br /> i <br /> Advanced <br /> GeoEnvlronmental , Inc ® Ell" <br /> . - <br /> 1 <br /> 27 October 2008 <br /> AGE-NC Project No. 97-0301 nn ISE <br /> ECE <br /> Ms. Vicki McCartney OCT 2 9 2008 <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, 3`d Floor ENVIRONMENT HEALTH <br /> Stockton, CA 95202 PERMIT/SERVICES <br /> Subject: Additional Assessment and SVE Feasibility Testing Work Plan (June 2008) <br /> PACIFIC PRIDE - SOUTH EL DORADO STREET <br /> 3147 South El Dorado Street, Stockton, California <br /> Dear Ms. McCartney: <br /> In accordance with a San Joaquin County Environmental Health Department (SJCEHD) directive <br /> letter (dated 18 March 2008), Advanced GeoEnvironmental, Inc. (AGE) previously prepared the <br /> above-referenced work plan for the installation of three (3) soil vapor extraction (SVE) wells, <br /> performance of an SVE feasibility test and installation of one off-site ground water monitoring well . <br /> Thereafter, by letter dated 25 July 2008, the SJCEHD approved the installation of the SVE wells <br /> and SVE feasibility test but did not approve the location of the proposed ground water monitoring <br /> well for various perceived safety reasons . <br /> AGE has the following comments based on the 25 July 2008 SJCEHD letter: <br /> 1 . EHD continent: The workplan was submitted in response to EHD 's letter dated <br /> Marcy 18, 2008, directing additional investigation to address to the lateral extent of <br /> the dissolved petroleum hydrocarbon plum down gradient of the monitoring wells <br /> �ay�� yEt Myy9 and MW-10. - <br /> GE response: After further review by AGE, the 18 March 2008 letter only states <br /> 4 P) "to submit a-workplanthatwill-addresstke-lateral exteEztoftlre dissolvedpetroleun — <br /> I � � hydrocarbon plume southeast ofMW-9A in the shallow zone (35-45 feet bsg) ". The <br /> EHD issued no directive for additional investigation down gradient of MW- 10 . <br /> Therefore, the June 2008 work plan was prepared by AGE to only address the ground <br /> water impact southeast of MW-9 and not down gradient of MW- 10 . <br /> 2 , EHD comment: For safety reasons, the EHD does not believe a monitoring well <br /> should be installed in the turn lane. <br /> AGE response : We disagree with the EHD assessment that this location would not <br /> 837 Shaw Road , Stockton, California 95215 <br /> Telephone (209) 467 - 1006 Fax (209) 467-1118 <br />