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Shaw Environmental, Inc <br /> �1,D1326 North Market Boulevard <br /> Sacramento, CA 95834-1912 <br /> a C T 2 0 2003 916 928 3300 <br /> Fax 916 565 4356 <br /> ENVIRONMENT HEAEfIyx (Bcllers only) 916 928 0415 <br /> h 'Shaw Environmental, Inc. r <br /> 1 October 15, 2003 0� <br /> Prod ect No 880-040 l A/01070Q 0{y� `yE d'114— <br /> Ms Vicki McCartney <br /> San Joaquin County Public Health Services �G4l <br /> Environmental Health Division ` <br /> 304 East Weber Avenue <br /> Stockton, California 95202 <br /> Re Third Quarter 2003 Groundwater Monitoring Report <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) presents the results of <br /> the third quarter 2003 groundwater monitoring event for Parkinson's Hammer I-5 Arco <br />' SITE BACKGROUND <br /> The site is located on West Hammer Lane east of Interstate 5 in Stockton, 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 /> 1 <br /> On January 7, 2000, the station began product line upgrades After the removal of dispenser <br /> 1 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 /> 1 product lines at a depth of approximately 3 5 feet below ground surface (bgs) <br /> 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 /> were selected based on the January 7, 2000, sampling results Excavation was restricted <br />' N IsacDP120031Prj188018800401A Sad doc A Shaw Group Company <br />