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Scope of Work <br /> Subsurface Site Assessment <br /> Station #171 <br /> Page 2 <br /> accordance with sections 2645 and 2658 of the State of <br /> California Underground Storage Regulations dated August <br /> 1985. <br /> SOIL ANALYSIS <br /> Soil samples shall be analyzed as follows: <br /> 1. Total petroleum hydrocarbons (TPH) by EPA Method 8015 <br /> for all samples. <br /> 2 . Benzene, toluene, total xylenes (BTX) by EPA Method 8020 <br /> for all samples over 500 PPM (TPH) and at soil-water <br /> interface. <br /> 3 . Total lead by EPA Method 7421 for all samples over 500 <br /> PPM (TPH) and at soil-water interface. <br /> 4 . Ethylene dibromide by EPA method 601 for all samples <br /> over 500 PPM (TPH) and at soil-water interface. <br /> Samples shall be analyzed using a liquid concentrator and a <br /> gas chromatograph equipped with a photoionization detector. <br /> WATER SAMPLES <br /> V4The water samples shall be analyzed for TPH according to <br /> a modified EPA Method 8020 using a gas chromatography <br /> equipped with a flame ionization detector. The samples shall <br /> be analyzed for BTX according to EPA Method 602 using a <br /> liquid sample concentrator and a gas chromatograph equipped <br /> with a photoionization detector. Minimum one water sample <br /> tested for organic lead by EPA Method 7421. <br />