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I <br /> v t. <br /> IMAM ran <br /> Page -22- <br /> Parameter Preparation Yield <br /> EPA Add 0.4 mL of spike solution <br /> p 20 ug/L <br /> Method 501 <br /> (containing 100 vg/L of of each <br /> (Trihalomethanes) Chloroform, Bromodichloromethane, <br /> Dibromochloramethane and <br /> Bromoform) into 20 mL of sample, <br /> extract into 2 mL of iso-actane <br /> EPA <br /> Method 602/8020 Add 5.0 uL of spike solution 2.5 u L <br /> (benzene, (containing 2.5 mg/L of (or g/ <br /> toluene, and benzene, toluene, p-xylene, <br /> Xylene) 2.5 ug/kg) <br /> a-xylene, m-xylene, and <br /> ethyl benzene) to 5.0 mL of <br /> sample (or 5.0 g of solid) <br /> EPA Add 1.0 mL of spike solution <br /> Method 608/8080 50 each <br /> • (containing D.50 ugh of o. each <br /> r, (chlorinated 4,4'-DDA, 4,4'-DDT, <br /> pesticides Endosulfan II, <br /> and ' <br /> Endosulfan Sulfate, Endrin, <br /> polychlorinated Lindane, alpha-BHC, <br /> biphenyls) beta-BHC, Heptachlor, Aldrin, <br /> Heptachlor epoyide, p,p'-DDE, <br /> Dieldrin, o,p-DDD, o,p'-DDT, <br /> p,P'-DDD, p,p'-DDT) <br /> to 600 mL of sample (or 10 g of <br /> solid <br /> `-' )g extract into 10 mL of <br /> hexane. <br /> rPA Add 1.0 mL of spike <br /> Method 615/8150 50 ug/L <br /> solution (containing) <br /> (chlorinated 150 ug/L of 2.4-D and <br /> phenoxy 2,4,5-TP) to 300 mL of <br /> herbicides) sample (or 50 g of solid), <br /> extract into 3.0 mL of <br /> toluene. <br /> Dibromochloropropane Add 0.5 mL of 170 ug/L 8.5 v /L <br /> (DBCP) to 850 mL of sample, extract g <br /> into 10 mL of hexane. <br /> Ethylenedibromide Add 5 uL of 0.0013 mg/L to 0.0013 u L <br /> (EDB) 5 mL of sample (or 5 g of solid) g/ <br /> Polychlorinated Add 1.0 mL of 2.5 mg/L 0.25 m /L <br /> Biphenyls to 600 mL of sample, g <br /> (PCBs) (or 10 g of solid), extract <br /> into 10 mL of hexane. <br /> ` Tetrachloroethene Add 0,5 mL of 175 ug/L <br /> (PCE) to 850 mL of sample, 8.8 ug/L <br /> extract into 10 mL of hexane <br /> RECEIVED NAR i 3 1920 <br />