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j <br /> Sharpe Army Depot <br /> Holding and Evaporation/Oxidation Ponds <br /> Supplement ling Pan <br /> Re erence Figure 1 <br /> 1. Sample Monitor Wells 419A and 4198 and analyze for constituents not <br /> normally sampled. Wells shall be purged prior to sampling (3-volumes <br /> minimum) . Wells shall be purged until temperature, pH, and Specific <br /> Conductivity reaches steady state. <br /> EPA Method <br /> a. EPA Priority Pollutant Metals 200.7 <br /> b. Arsenic 206.2/.3 <br /> c. Selenium 270.2/.3 <br /> d. Mercury 245.1/.3 <br /> e. Semi-volatile Organics 625 <br /> 2. Locations PA through PF - take boring at each location sampling at two <br /> six-inch intervals 0 to 0.5 ft. and 1.0 to 1 .5 ft. below the liner. Analyze <br /> samples for constituents not analyzed before. <br /> EPA Method <br /> a. Total Petroleum Hydrocarbons 418.1 <br /> b. Total Oil and Grease 9070/71 <br /> c. Total Fuel Hydrocarbons 8015 (EPA Modified) <br /> Boring location shall be at places where liner has a seam or has a crack. <br /> 3. Sample Locations PH, PJ , PM - take a boring at each location sampling <br /> three six-inch intervals 0 to 0.5 ft, 5.0 to 5.5 ft, and 10.0 to 10.5 ft. <br /> below land surface. Analyze for following constituents. <br /> EPA Method <br /> a. Halogenated Volatile Organics 8010 <br /> b. Aromatic Volatile Organics 8020 <br /> c. Total Fuel Hydrocarbon 8015 (Modified) <br /> d. Total Petroleum Hydrocarbon 418.1 <br /> e. Total Oil and Grease 9070/71 <br /> f. Semi-volatile Organics 8270 <br /> g. Arsenic 7060/61 <br /> h. Selemium 7740/41 <br /> i. Mercury 7470/71 <br /> j . Other EPA Priority Metals 6010 <br /> 4. Sample Location J , K, N - take a boring at each location sampling two <br /> six-inch intervals 0 to 0.5 ft. and 1 .0 to 1 .5 ft. below land surface. <br /> Analyze samples for constituents , <br /> _.,ion 7 �- <br /> Note: All sampling and testing methods shall be EPA approved. <br />