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American hnvirotlnienta< wetworw <br /> PAGE 4 <br /> QUALITY CONTROL DATA <br /> MATRIX: WATER AEN JOB NO: 9406184 <br /> CLIENT PROJ. ID: 2482 DATES) ANALYZED: 06/20-21/94 <br /> MATRIX SPIKE RECOVERY SUMMARY <br /> QC Limits <br /> Spike Average <br /> Inst./ Sample Added Percent % Rec. RPD <br /> Compound Method Spiked (mg/L) Recovery RPD Limit Limit <br /> Ag, Silver ICP/6010 9406203-01 0.25 97 1 78-111 9 <br /> As , Arsenic 4000/7060 9406184-01 0.04 106 3 59-149 13 <br /> Ba, Barium ICP/6010 9406203-01 2.0 98 1 83-108 5 <br /> Be, Beryllium ICP/6010 9406203-01 0.05 93 2 64-104 7 <br /> Cd, Cadmium ICP/6010 9406203-01 ' 0.25 97 1 64-128 15 <br /> Co, Cobalt ICP/6010 9406203-01 0.5 98 1 74-121 6 <br /> Cr, Chromium ICP/6010 9406203-01 0.2 102 <1 75-114 7 <br /> Cu, Copper ICP/6010 9406203-01 0.25 96 1 81-114 5 <br /> Hg, Mercury Hg/7470 9406184-01 2.0 ug/L 101 1 80-120 15 <br /> Mo, Molybdenum ICP/6010 9406203-01 0.2 105 <1 76-119 7 <br /> Ni , Nickel ICP/6010 9406203-01 0.5 100 1 77-113 5 <br /> Pb. Lead ICP/6010 9406203-01 0.5 96 1 80-115 7 <br /> Sb, Antimony ICP/6010 9406203-01 0.5 103 <1 79-116 8 <br /> Se, Selenium 4000/7740 9406184-01 0.08 22 1 0-147 20 <br /> Tl , Thallium ICP/6010 9406203-01 0.5 93 1 67-116 7 <br /> V, Vanadium ICP/6010 9406203-01 0.5 99 1 77-114 6 <br /> Zn, Zinc ICP/6010 9406203-01 0.5 98 1 68-116 7 <br />