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Scope of Work <br /> Subsurface Site Assessm it <br /> Station #171 <br /> Page 2 <br />' accordance with se:tions 2645 and 2658 of the State of <br /> California Underground Storage Regulations dated August <br /> 1 1985 . <br /> i <br /> SOIL ANALYSIS <br />' Soil samples shall ie analyzed as follows: <br /> 1 . Total petroletil hydrocarbons (TPH) by EPA Method 8015 <br />' for all sample- <br /> 2 . <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 Ft soil-water interface. <br /> 4 . Ethylene dibrc,Tide by EPA method 601 for all samples <br /> over 500 PPM (7-PH) 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 /> Ii WATER SAMPLES <br /> IThe water samp es shall be analyzed for TPH according to <br /> a modified EPA Method 8020 using a gas chromatography <br /> equipped with a flaAe ionization detector. The samples shall <br /> be analyzed for B'IX according to EPA Method 602 using a <br /> liquid sample concentrator and a gas chromatograph equipped <br /> Iwith a photoionlzation detector. Minimum one water sample <br /> tested for organic lead by EPA Method 7421. <br /> I <br />