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B� Brown and Caldweli -, <br /> Consultants <br /> f-i'EALT!! <br /> 723SStreet <br /> Sacramento f <br /> California 95814-7092 93 AUG _3 PP, 3: f 7 <br /> (916)444-0123 U <br /> FAX(916)444-8437 <br /> July 30, 1993 <br /> Ms. Laurie Cotulla <br /> San Joaquin County <br /> Public Health Services <br /> Environmental Health Division <br /> Post Office Box 2009 <br /> Stockton, California 95201 017-7525-01/1 <br /> Subject: Follow-up to Brown and Caldwell's May 14, 1993, Work Plan <br /> ARCO Station 2133, Site Code 1020 <br /> Dear Ms. Cotulla: <br /> During a June 3, 1993, telephone conversation between me and Ms. Mary Meays of your <br /> staff, a number of items were discussed regarding Brown and Caldwell's (BC) May 14, 1993, <br /> work plan. The work plan was prepared for the installation of soil vapor extraction and air <br /> sparging wells for ARCO Station 2133 located at 2908 Benjamin Holt Drive, Stockton, <br /> California. <br /> Item 1 was the installation of one groundwater monitoring well on the northwest corner of the <br /> site which was not proposed in the work plan. Figure 1 of this letter is a revised site map <br /> showing the proposed location of this well. The groundwater monitoring well will be installed <br /> according to the methods described in the "Groundwater Monitoring Wells" section in the <br /> May 14, 1993, work plan. <br /> Item 2 was a discussion of our progress on obtaining access to install a groundwater <br /> monitoring well on CalTrans property between the ARCO Station and the northbound freeway <br /> offramp. I explained that CalTrans was not willing to grant access for safety reasons. <br /> Ms. Meays requested that BC obtain a letter from CalTrans documenting their refusal to allow <br /> access to their property so ARCO could formally appeal the County's request to install a <br /> monitoring well in that location. After reviewing this documentation, the County will request <br /> that ARCO install this well on the western edge of the ARCO site, south of monitoring well <br /> E-12 instead of on the CalTrans property. Beginning June 7, 1993, BC made several <br /> unsuccessful efforts to contact Mr. John Galliano of CalTrans to request this letter. On <br /> July 1, 1993, Mr. Galliano was contacted and agreed to prepare a letter denying access. <br /> 7525N CORRESPJ525-021-2 <br />