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Coca-Cola Enterprises - West <br /> job No. 90054 <br /> 1100 North Wilson Way, Stockton, California. This investigation was initiated by Mr. Steven <br /> McConnell, Director of occupational/Environmental Safety for Coca-Cola Enterprises - West, <br /> to assess the vertical and lateral extent of petroleum hydrocarbon contamination found at the <br /> site during UST removal operations. <br /> - The excavation and removal of a 10,000-gallon UST and a 1,000-gallon gasoline UST was <br /> completed on April 19, 1990• The analytical chemistry results of soil samples collected beneath <br /> the former U5Ts indicated concentrations of diesel and gasoline hydrocarbons were present in <br /> the soils from the 1,000-gallon gasoline excavation. The release was reported to Mr. Charles <br /> Hunt of the San Joaquin County Public Health Services,Environmental Health Division on April <br /> 19, 1990. <br /> The initial field assessment consisted of a soil gas survey which was conducted by USTEC in <br /> May, 1990. The survey was designed to provide initial estimates of the lateral extent of <br /> contamination and provide a basis for selecting groundwater monitoring well locations. The <br /> assessment continued in August, 1990 with the drilling and installation of six borings and three <br /> . J ; <br /> groundwater monitoring wells. An additional seven borings were drilled in September, 1990 <br /> r� and two more groundwater monitoring wells were installed. <br /> The groundwater monitoring wells were surveyed by a registered California land surveyor. <br /> Groundwater samples were collected from all groundwater monitoring wells. Soils and <br /> ere analyzed for total petroleum hydrocarbons (TPH) in accordance <br /> groundwater samples w <br /> with Environmental Protection Agency (EPA) method 8015 modified for gasoline and diesel, <br /> for the aromatic hydrocarbons,benzene,toluene,ethylbenzene,and xylenes(BTIX)in accordance <br /> with EPA method 8020, for polynuclear aromatic hydrocarbons (PNA) in accordance with EPA <br /> method 8100, and for lead in accordance with the California LUFI Manual, dated December, <br /> 1987. <br /> The scope of work conducted by USTEC during the site contamination assessment described <br /> in this report,was intended to evaluate the vertical and lateral extent of petroleum hydrocarbon <br /> contamination at the Coca-Cola site. The conclusions made in this report are based on the data <br /> e following <br /> ed._.during the.fieldwork, previous assessments, and our best judgement. Th <br /> �.✓ 18 - <br />