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Shaw Environmental 8. Infrastructure, Inc <br /> 1326 North Market Boulevard <br /> Sacramento, California 95834 <br /> D <br /> LS� � <br /> YE <br /> n9169283300 <br /> FAX 916 565 4356 <br /> S�11��1 The Shaw Group Inc' NOV 0 gg4 <br /> E WRONMENT <br /> PERM1T/SERVICESTH November 8, 2004 �` 4 <br /> Project No 880-040 1A.02010000 <br /> Ms Vicki McCartney U �Al <br /> eSan Joaquin County Public Health Services <br /> Environmental Health Division <br />' 304 East Weber Avenue <br /> Stockton, California 95202 <br />' Re Fourth Quarter 2004 Groundwater Monitoring Report, Parkinson's Hammer <br /> 1-5 Arco, 3250 West Hammer Lane Stockton, California <br /> Dear Ms McCartney <br /> On behalf of Parkinson's Hammer I-5 Arco, Shaw Environmental, Inc (Shaw) presents <br /> the results of the fourth quarter 2004 groundwater monitoring event for the above <br /> referenced site <br />' SITE BACKGROUND <br /> The site is located at 3250 West Hammer Lane, east of Interstate 5 in Stockton, <br />' California The site is a privately owned Arco-branded service station that has retailed <br /> gasoline fuel for approximately 14 years The site currently includes three 12,000-gallon <br /> capacity gasoline underground storage tanks (USTs) and associated product lines and <br /> dispensers Diesel fuel has never been dispensed at the site <br /> On January 7, 2000, the station began product line upgrades After the removal of <br /> dispenser plumbing, soil impacted by petroleum hydrocarbons was discovered below the <br />' western dispenser islands Soil samples were collected from beneath the dispensers and <br /> along the 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 <br /> E <br /> 1 N 1sacDP120041Prj188018800401 A 4ae doc <br />