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' 14 <br /> 4.3.1 Soil <br /> Selected soil samples were analyzed for total petroleum hydrocarbons as gasoline <br /> (TPH-g) using Environmental Protection Agency (EPA) modified Method 8015 and benzene, <br /> toluene, ethylbenzene, total xylenes (BTEX) and methyl tert-butyl ether (MTBE) using EPA <br /> Method 8020 In addition, samples with reported concentrations of MTBE were reanalyzed at <br /> a fixed-site laboratory for MTBE, Di-isopropyl ether, ether tertiary butyl ether, t-Amyl methyl <br /> ' ether, and tertiary butanol using EPA Method 8260 <br /> ' 4.3.2 Water <br /> Selected water samples were analyzed for TPH-g, BTEX and MTBE In addition, <br /> samples with reported concentrations of MTBE by Method 8020 were reanalyzed at a fixed- <br /> site laboratory for MTBE, Di-isopropyl ether, ether tertiary butyl ether, t-Amyl methyl ether, <br /> and tertiary butanol using EPA Method 8260 <br /> In addition, selected water samples were analyzed for indicators of biological activity <br /> ' These additional analyses included <br /> ' Analyte Laboratory,Method <br /> ' Total Iron EPA Method 200 7 <br /> Total Iron (Filtered) EPA Method 200 7 <br /> Nitrogen SCAQMD Method 25 1 <br /> I <br /> ' Methane SCAQMD Method 25 1 <br /> Carbon Monoxide SCAQMD Method 25 1 <br /> ' Carbon Dioxide SCAQMD Method 25 1 <br /> Total Alkalinity(as CaCO3) SM 2320B <br /> ' Total Hardness EPA Method 130 2 <br /> Nitrogen, Ammonia EPA Method 350 2 <br /> 1 <br />