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i <br /> City of Stockton A68101.02F <br /> July 24, 1997 Page 9 <br /> 1 <br /> TABLE 5 <br /> ::Preparation and Analytical Methods <br /> Type of Analysis Preparation Method Analytical MethodMethod Detection Limit <br /> ' Water Sample Analyses <br /> Benzene,Toluene, 50301 6022 0.5 ug/L <br /> Ethylbenzene,and Xylenes <br /> (BTEX) <br /> Total Petroleum 5030 GC/FID3 50 Ecg/L <br /> Hydrocarbons-Gasoline Range <br /> ' Constituents(TPH-G) <br /> Total Petroleum 35101 GC/FID 50 ug/L <br /> Hydrocarbons-Diesel Range <br /> ' Constituents(TPH-D) <br /> Methyl Tertiary Butyl Ether 5030 602 5 ug/L <br /> (,MTBE) <br /> ' Soil Sample Analyses <br /> Benzene,Toluene, 5030 80301 0.005 mg/kg <br /> Ethylbenzene,and Xylenes <br /> (BTEX) <br /> Total Petroleum 5030 GC/FID 1.0 mg/kg <br /> Hydrocarbons-Gasoline Range and <br /> ' Constituents(TPH-G) 13111 <br /> Total Petroleum 5030 GC/FID 10 mg/kg <br /> Hydrocarbons-Diesel Range and <br /> ' Constituents(TPH-D) 1311 <br /> Methyl Tertiary Butyl Ether 5030 8020 0.05 mg/kg <br /> (MBTE) <br /> GC/FID = Gas Chromatography/Flame Ionization Detection <br /> mg/kg milligrams per kilogram <br /> ug/L = micrograms per liter <br /> ' 1 United States Environmental Protection Agency(U.S. EPA), 1986 <br /> 2 California State Water Resources Control Board, 1988 <br /> 3 U. S. EPA, 1982 <br /> 1 <br /> Twining is a California Department of Health Services certified hazardous waste laboratory <br /> (Certificate No. 1371) for the analyses outlined herein. A description of laboratory quality <br /> ' assurance/quality control procedures used for the analyses are described in the SOPs. <br /> i <br />