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CanonteEnvironmental <br />135 <br />Canonie Environmental Services Corp. <br />1710 Main Street <br />Escalon, California 95320 <br />Phone: 209-838-3507 <br />Phone: 800-926-0806 <br />Fax: 209-838-3509 <br />April 17, 1995 <br />94-326-003 <br />Ms. Mary Meays <br />San Joaquin County Public Health Services <br />Environmental Health Division <br />P.O. Box 338 <br />Stockton, CA 95201-0388 <br />Subject: Gardner Property, 26056 Thornton Road, Thornton, California, Site Code 1864 <br />Ms. Meays: <br />Enclosed are analytical results of a excavation purge water sample collected at the above <br />referenced site. The water sample was collected on March 30, 1995 from a portable tank <br />which contained groundwater pumped from the excavation pit during February 1995, field <br />activities. Prior to sample collection, the stored water in the tank was circulated with a pump <br />to ensure representative sampling. <br />The sample was immediately placed on ice and transported to Argon Laboratories, a State <br />certified Hazardous Waste Laboratory (Certification No. 1873). the sample was analyzed for <br />the presence of benzene, toluene, ethylbenzene, xylenes (BTEX), and total petroleum <br />hydrocarbons as gasoline (TPHg) by EPA methods 8020 and modified 8015 respectively. No <br />petroleum hydrocarbons were detected above method detection limits for the sample. <br />Laboratory data sheets and chain of custody documentation is attached. <br />Due to the absence of contaminants in the water stored in the portable tank, Canonie/Smith <br />Environmental Technologies Corporation (Canonie) proposes to discharge the stored purge <br />water to the ground surface within the boundaries of the site. A pump equipped with a <br />discharge hose will be used to disperse the water to the ground surface. <br />150059\1:41795.doc