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.a <br /> 0 <br /> SECOR <br /> International Incorporated <br /> i <br /> November 30, 2000 <br /> Project 077 43029 310 <br /> Ms Lon Duncan SID <br /> San Joaquin County Public Health Services <br /> Environmental Health Division se' se '�Q <br /> 304 East Weber Avenue, Third Floor ��C Q, t�EP`-0 <br /> Stockton, California 95202 ONMEN� AGES <br /> ENQ�RN11�IS�� <br /> Re Work Plan for Additional Site Assessment <br /> ARCO Station #595 <br /> 6100 North Highway 99 <br /> Stockton, California <br /> Dear Ms Duncan <br /> This letter, prepared by SECOR International Incorporated (SECOR) on behalf of <br /> Atlantic Richfield Company (ARCO), presents a work plan for additional site <br /> assessment activities at the site referenced above (Figures 1 and 2) Site assessment <br /> activities will include the installation of three offsite groundwater monitoring wells, the <br /> drilling of two soil borings, and the performance of a 500-foot radius door-to-door well <br /> search The purpose of the proposed work is to assess the lateral and vertical extent of <br /> petroleum hydrocarbons in soil and groundwater beneath the site and to determine the <br /> location of potential sensitive receptors This work plan has been prepared in response <br /> to San Joaquin County Environmental Health Division (SJCEHD) letter dated October <br /> 26, 2000 (Attachment A) Please note that this work plan does not propose the <br /> installation of deeply screened monitoring wells as requested by the SJCDEH in their <br /> above referenced letter SECOR requests that the vertical assessment consisting of soil <br /> borings and depth discrete samples be conducted prior to the installation of deeply <br /> screened groundwater monitoring wells <br /> This work plan includes a brief discussion of site background, proposed scope of work, <br /> and schedule <br /> SITE BACKGROUND <br /> The site is located at 6100 North Highway 99 in Stockton, California, and is an <br /> operating AMIPM mini-mart and ARCO service station The site is bordered by <br /> orchards to north, east, and south, and Highway 99 to the west The site currently <br /> contains three 12,000-gallon gasoline USTs and associated product lines and dispensers <br /> 3017 Kalgore Road, Suite 100, Rancho Cordova, CA 95670 916 861 0400 916 861 0430 Fax www secor com <br />