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Shaw Environmental, Inc. <br /> 1326 North Market Boulevard <br /> Sacramento, CA 95834-1912 <br /> 916.928.3300 <br /> Fax: 916.565.4356 <br /> Fax(Billers Only): 916.928.0415 <br /> ShaW'Shaw Environmental, Inc. <br /> May 23, 2003 <br /> Project No.: 880:040.i A.0110 <br /> Ms. Vicki McCartney <br /> San Joaquin County Public Health Services N j <br /> Environmental Health Division 1 <br /> 304 East Weber Avenue <br /> Stockton, California 95202 <br /> Re: Work Plan for Additional Groundwater Assessment <br /> Parkinson's Hammer I-5 Arco <br /> 3250 West Hammer Lane <br /> Stockton, California <br /> Dear Ms. McCartney: <br /> On behalf of Mr. Jim Parkinson, Shaw Environmental, Inc. (Shaw) has prepared this _ <br /> work plan to perform additional groundwater assessment at Parkinson's Hammer j <br /> Interstate 5 (I-5) Arco in Stockton, California (Figure 1). The objective of this <br /> I <br /> investigation is to further define the lateral and vertical extent of dissolved petroleum <br /> hydrocarbons and methyl tert-butyl ether (MtBE) in groundwater. This work was <br /> requested by San Joaquin County Environmental Health Department (SJCEHD) in a <br /> letter dated April 2, 2003. The proposed scope of work includes: obtaining the required <br /> boring and encroachment permits: advancing four cone penetrometer test(CPT) borings <br /> up to 90 feet below ground surface (bgs); collecting and submitting discrete groundwater <br /> samples for analysis; and preparing a report presenting the findings of the investigation. <br /> The scope of work described in this ,work.. plan is intended to comply with the <br /> California Code of Regulations Title 23, Division 3, Chapter 16, Underground Tank <br /> Regulations, and-SJCEHD guidelines. <br /> i <br /> SITE BACKGROUND <br /> The site is located on West Hammer Lane east of I-5 in Stockton, California. The site is <br /> a privately owned Arco-branded service station that has retailed gasoline fuel for <br /> approximately 14 years. The site currently includes three 12,000-gallon capacity <br /> A Shaw Group Company <br /> N:\sacDP\2003\Prj\880\8800401A.3ac.doc <br />