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a��le Analysis Me .hods <br /> Soil samples will be analyzed by the following methods: <br /> • Twenty-six metals by EPA Method 6010 <br /> • Arsenic by EPA Method 7060 <br /> • Mercury by EPA Method 7471 <br /> • Selenium by EPA Method 747 <br /> • Chromium+6 by EPA Method 7197 <br /> GROUND-WATER SAMPLING ANALYSIS PROCEDURES <br /> Sample collection procedures for ground water include equipment <br /> cleaning, water-level and well total depth measurements, well purging, <br /> sampling, and sample preservation and shipment. <br /> Eui=nt Cleaning <br /> Prior to beginning the sampling event, all equipment that will be <br /> placed in the well or come in contact with ground water is disassem- <br /> bled and cleaned thoroughly with detergent or trisodium phosphate <br /> water and then steam cleaned with deionized water. Any parts that may <br /> absorb organics, such as plastic pump valves or bladders, are cleaned <br /> as described below. The inside surfaces of pump tubing are cleaned by <br /> heating the tubing in the presence of a carrier gas flow. <br /> Sample bottles, bottle caps, and septa for use in sampling for vola- <br /> tile organics will be thoroughly washed with detergent, rinsed eaten- <br /> lively with tap water, and then rinsed again with high-purity deion- <br /> ized water. After washing and rinsing, sample bottles and bottle caps <br /> will be dried overnight at a temperature of 150•C. Sample bottles, <br /> bottle caps, and septa will be protected from all forms of solvent <br /> contact between the time of drying and actual usage at the site. When <br /> plastic bottles and caps are used, they will be constructed of linear <br /> PJ9 9390313.00D - <br />