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FILE SECOR <br /> • iJ11� !llrrlirrlltll IN11�1��r11r11('!� <br /> 3 1nu iry S 2001 <br /> Pi oik-(_1 077 4 1280 i 10 <br /> M" i o11 Dunk- in <br /> ►u 10,R]uln ( 0(111t\ I'uhliL I Icallh �c1 vt�c, <br /> I n\ 11(1111t1en1 0 11�_ dill 1�1�a`Icin <br /> 10i4 1 1\1 \VChLI \�LnuC I 1111 1 1001 <br /> '�'Iockloil C.a111o1n11 `}i?(i_' <br /> Re \\'ori. Pian for Additional Site Assessment <br /> ARCO Station #4932 <br /> IG East Ha1d1ng Way <br /> Stockton California <br /> Site Code 1136 <br /> I <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 I and 2) Site assessment <br /> activities will include the following work: 1) installation of five offsite groundwater <br /> monitoring wells, 2)the drilling of two soil borings; 3) the performance of a 500-foot <br /> radius door-to-door well search, and 4) the performance of a conduit study The <br /> purpose of the proposed work is to assess the lateral and vertical extent of petroleum <br /> hydrocarbons in groundwater and soil beneath the site <br /> This work plan has been prepared in response to San Joaquin County Environmental <br /> Health Division (SJCEHD) letter dated November 21,2000(Attachment A). Please <br /> note that this work plan does not propose the installation of deeply screened monitoring <br /> wells as requested by the SJCDEH in their above referenced letter. SECOR requests <br /> that the vertical assessment consisting of soil borings and depth discrete samples be <br /> conducted prior to the installation of deeply screened groundwater monitoring wells to <br /> verify the necessity of deeply screened wells and to allow for the design of appropriately <br /> constructed well(s)based on the results of the discrete sampling This work plan also <br /> includes a brief discussion of site background, proposed scope of work, and schedule <br /> SITE BACKGROUND <br /> The site is located at the intersection of Center Street and Harding Way in Stockton, <br /> iCalifornia, and is an operating AM/PM mini-mart and ARCO service station The site <br /> is located in mixed residential and commercial area of Stockton Facilities at the site <br />