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3.0 SOIL SAMPLING PROCEDURES In order to obtain a representative indication of the hydrocarbon levels within the soil pile, Groundwater Technology,Inc.will be gathering soil samples from a different locations within the stockpile. At each of the locations, 2 samples will be taken. The first sample from a depth of approximately 3 feet from below the crown of the pile and the second from a depth of approximately 2 feet above the base of the pile. Both samples from each location will be composited in the laboratory for analysis. These composited samples will be analyzed for benzene,toluene,ethylbenzene and xylene(STEX)and total petroleum hydrocarbons (TPH) as gasoline and diesel. Table 1 summarizes the proposed sample locations and analytical testing (Attachment A). Prior to each sampling event, all field equipment that may come In contact with the sample will be decontaminated. This procedure will Include a primary rinse In plain water, a wash bath in a solution of Alconox soap and water, a secondary rinse in plain water,and a final rinse in deionized water. All wash water and rinsate generated during this procedure will be stored on-site in 55-gallon drums. Each drum will be marked with its content and the initial accumulation date. Each sample will be gathered by first hand auguring down to the desired sample depth and then using a _f hand operated drive sampl,3r and brass tube to obtain the sample. When the brass tube containing the soil matrix is recovered from Vie sampler, both ends of the brass tube will be covered with aluminum fail and plastic end caps. A sample Identification tag will be placed on the tube and the sample will then be stored on ice until delivery to the laboratory. All samples will be recorded on a sample chain-of-custody form. Sample analysis will be performed by Groundwater Technology Environmental Laboratories, a State of California certified lab. After each sample is gathered, the bore hole will be screened for hydrocarbons using a photo-ionization detector or similar instrument. This information will be recorded in afield log. After all of the bore holes have been screened In this manner,the bore hole with the highest reading will agahi be sampled using the hand operated drive sampler and brass tube. This sample will be used for the hazardous waste determination. GROI NID) 'ATER 3 TECHNOLOGY.INC.