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} <br /> f <br /> Shaw Environmental& Infrastructure, Inc. <br /> �, ti �jM1 �r•-�.i i � <br /> ICE 1326 North Market Boulevard <br /> 0 DEC ' �� 5 a Sacramento, California 95834 t <br /> 916.928-3300 <br /> FAX 916-565.4356 } <br /> T h 7be Shaw Group Inc.- <br /> November <br />{ November 25, 2003 <br /> Project No.: 880-040.1A/010700004 <br /> M ` z\ <br /> Ms. Vicki McCartney _4 <br /> San Joaquin County Public Health Services G , 0 <br /> Environmental Health Division �, �► <br /> 304 East Weber Avenue <br /> Stockton, California 95202 <br /> Re: Fourth Quarter 2003 Groundwater Monitoring Report I <br /> Parkinson's Hammer I-5 Arco r <br /> j 3250 West Hammer Lane ' <br /> Stockton, California x <br /> Dear Ms. McCartney: <br /> On behalf of Mr. Jim Parkinson, Shaw Environmental, Inc. (Shaw) presents the results of <br /> the fourth quarter 2003 groundwater monitoring event for Parkinson's Hammer 1-5 Arco. <br /> i <br /> SITE BACKGROUND <br /> The4 it i <br /> s e s located on West Hammer Lane east of Interstate 5 in Stockton,a , California. The <br /> site is 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 gasoline <br /> underground storage tanks (USTs) and associated product lines and dispensers. Diesel fuel <br /> has never been dispensed at the site. <br /> On January 7, 2000, the station began product line upgrades. After the removal of dispenser <br /> plumbing, soil impacted by petroleum hydrocarbons was discovered below the western ' <br /> _ dispenser islands. Soil samples were collected from beneath the dispensers and along the <br /> product lines at a depth of approximately 3.5 feet below ground surface (bgs). <br /> i Remedial activities conducted on January 26, 2000, included removal of approximately <br /> 262 tons of impacted soil in the area below dispenser and product lines. Excavation areas <br /> N asacDP120031Prj188018800401 A.3ae.doc <br /> 7 <br />