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' Shaw Environmental & Infrastructure, Inc <br /> ED4005 PartChicago Highway <br /> RDECEN Concord, CA 94520-1120 <br /> 925 288 9898 <br /> SEP F, Z��� Fax 925 288 0888 <br />' <br /> ShaW The Shaw Group Inc'M ENV1ROWUNT HULTH <br /> v <br />' August 31, 2005 <br /> Project No 880040 1 A 02010000 .`' <br /> Ms Vicki McCartney ' <br /> San Joaquin County Public Health Services <br /> Environmental Health Di-vision <br /> 304 East Weber Avenue <br />' Stockton, California 95202 <br /> Re Third Quarter 2005 Groundwater Monitoring Report, Parkinson's Hammer <br />' I-5 Arco, 3250 West Hammer Lane Stockton, California <br /> Dear Ms McCartney <br /> On behalf of Parkinson's Hammer 1-5 Arco, Shaw Environmental, Inc (Shaw) presents <br /> pthe results of the Third Quarter 2005 groundwater monitoring event for the above <br /> ) referenced property (the site) <br />' SITE BACKGROUND <br /> The site is Iocated at 3250 West Hammer Lane, in Stockton, San Joaquin County, <br /> California The site is a privately owned Arco-branded service station that has retailed <br /> gasoline fuel for approximately 15 years It contains three 12,000-gallon capacity <br /> gasoline underground storage tanks (USTs) and associated product lines and dispensers <br />' Diesel fuel has never been dispensed at the site <br />' In January 2000, the station began product line upgrades and encountered petroleum <br /> hydrocarbon-impacted soil below the western furl dispenser islands <br />' Remedial activities in January 2000 included removal of approximately 262 tons of <br /> impacted soil from beneath and near the dispenser and product lines Excavation was <br /> restneted laterally by concrete canopy footings and asphalt surfacing and the depth of <br /> excavation was limited to 10 feet <br /> 66 <br /> 1 <br /> 1 C\Documents-ind 5etungs\ApadonicblDesktoplARCO\3Q05 doc <br />