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EXECUTIVE SUMMARY <br /> Groundwater monitoring was performed at 8125 S El Dorado Street (J&L Market) on <br /> June 4, 2043 After the depth to the static water level was measured, the standing water <br /> was purged and water samples were collected from the three monitoring wells The <br /> samples were analyzed for Total Petroleum Hydrocarbons in the gasoline and diesel <br /> ranges, volatile aromatic hydrocarbons (BTEX benzene, toluene, ethylbenzene, and <br /> xylene), gasoline oxygenates (methyl tertiary butyl ether, etc ), and lead scavengers (1,2- <br /> dichloroethane <br /> In the two impacted wells, the laboratory reported gasoline, diesel, and BTEX at <br /> concentrations that were either slightly higher or slightly lower than in the first quarter <br /> TPH-g concentrations of 470 and 2900 parts per billion were reported in JLM-3 and <br /> JLM-5, and total BTEX concentrations of 59 and 731 parts per billion were detected in <br /> these wells Concentrations of dichloroethane (1,2-DCA), methyl-tertiary-butyl ether <br /> (MTBE), and tertiary butanol (TBA) have remained low in both wells All analytes <br /> except 1,2-DCA remained below the detection limits in the third well (JLM-4) <br /> The depth to groundwater on June 4 was approximately 27 feet, which is about 2 feet <br /> deeper than in March The piezometric surface sloped to the southeast at a gradient of <br /> 0 0062 ft/ft <br /> 1 <br />