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Evaluation of Contamination January 3, 1989 <br /> Former Texaco Service Station, Manteca, California AGS 38053-1 <br /> a"w <br /> gallon tank, located north of the abandoned station building, was <br /> used to store waste oil. <br /> on February 11, 1988, Jim Thorpe ail, Inc. , removed the five <br /> underground storage tanks from the site. Canonie Environmental <br /> '{ Services Corporation was onsite to collect soil samples from <br /> beneath each tank. According to Canonie Environmental Services' <br /> Laboratory Report No. 85-052-3580, samples were collected from <br /> " approximate depths of 11 feet below the ground surface beneath <br /> the product tanks and 7 feet below the ground surface beneath the <br /> waste-oil tank. Results of laboratory analyses performed by <br /> �:s .,,• Canonie Environmental Services indicated that there is <br /> contamination in the soil approximately 11 feet below the ground <br /> surface at concentrations of total petroleum hydrocarbons (`1'FH) <br /> ranging from 5.1 to 100 parts per million (ppm) . <br /> In an effort to remove the contamination, the tank cavity was <br /> 4" further excavated, and Canonie Environmental Services collected a <br /> soil sample from approximately 18 meet below grade and a ground- <br /> water sample from approximately 20 feet below grade within the <br /> excavation. Laboratory analytical results of the soil sample <br /> presented in Canonie Laboratory Report No. 85-052-3776 revealed <br /> -------------------------- --total_volatile-h hydrocarbons-at__580 <br /> - - <br /> Y AAm and-total lead at 29.5 <br /> 3 <br /> A AMI Geos Stems <br /> pig � <br />