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U <br /> Hf1M1CK�If�IYfA <br /> Mr. Charles Leubner <br /> 25 March 1991 <br /> 1 Page 3 <br /> Ten samples were also collected along the length of the remote fill line and two samples <br /> along the length of the piping of the 10,000-gallon diesel tank. These samples were <br /> collected.at approximately 20-foot intervals along the length of the remote fill line and <br /> piping. <br /> One sample was collected for analyses from the 500-gallon gasoline tank. This sample was <br /> collected from the approximate center of the excavation, at a depth of approximately two <br /> feet into the native soil beneath the former location of the tank bottom. <br /> LABORATORY ANALYSIS <br /> The analytical program for the soil samples consisted of the following analyses, as specified <br /> by Letitia Resch of the San Joaquin County Public Health Services, Environmental Health <br /> Division included: <br /> 10,000-Gallon Diesel Tank and Remote Fill Line: <br /> Analysis Method <br /> I <br /> Total Petroleum Hydrocarbons as Diesel GC-FID with soxhlet sample <br /> s preparation <br /> LBenzene, Toluene, Ethylbenzene and EPA Method 8020 <br /> Xylenes <br /> 1 <br /> 500-Gallon Gasoline Tank: <br /> Analysis Method <br /> Total Petroleum Hydrocarbons as Gasoline GC-FID with purge and trap sample <br /> preparation <br /> Benzene, Toluene, Ethylbenzene and E P A M e t h o d 8 0 2 0 <br /> Xylenes <br /> Ethylene dibromide (EDB) DOHS-AB 1803 <br /> Lead . Waste Extraction Test (WET) <br /> At the same time that a sample was collected for laboratory analysis, a sample was <br /> collected from the backhoe bucket to monitor for the presence of organic vapors. The <br /> results of laboratory analyses and field monitoring for the presence of organic vapors is <br /> shown in Table 1. <br />