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Califomia Department of Toxic Substances Control HML No.: 960778 <br /> Hazardous Materials Laboratory To: 960800 <br /> Inorganic Section <br /> Quality Assurance Summary <br /> Liquid Samples <br /> Elements I CrVI <br /> Initial Refence Standard Found 0.19 <br /> Calibration CaCrO4 mg/L Known 0.20 <br /> Verification Lot No.: % Recovery 95.0 <br /> Exp. Date: Rea ent Blank <0.05 <br /> Continuing Check Standard Found 0.75 <br /> Calibration CaCrO4 mg/L Known 0.75 <br /> Verification Lot No.: % Recove 100 <br /> Exp. Date: Method Blank , <0.05 <br /> Duplicate HML No.: 960788 Spike Result A 92.0 <br /> Spike Spike Result B 92.6 <br /> Results Matrix: LIQUID Uns ike Result 27.40 <br /> Spike Added: 66.7 <br /> % Recovery A 96.9 <br /> % Recovery B 97.8 <br /> RPD 0.92 <br /> Soil & Sludge Samples: <br /> Elements CrVI <br /> Initial Refence Standard Found 0.195 <br /> Calibration EM SCIENCE mg/L Known 0.20 <br /> Verification Lot No.: 35135 % Recovery 97.5 <br /> Exp. Date: 9/1/97 Reagent Blank <0.05 <br /> Continuing Check Standard Found 0.712 <br /> Calibration mg/L Known 0.7 <br /> Verification % Recovery102 <br /> Method Blank <0.05 <br /> Duplicate HML No.: 960795 Spike Result A 4.72 <br /> Spike Spike Result B 4.80 <br /> Results Matrix: SLUDGE Uns ike Result 0.00 <br /> Spike Added: 5.00 <br /> % Recovery A 94.4 <br /> % Recovery B 96.0 <br /> RPD 1.68 <br /> Ssignatures: <br /> Z6ida R. Ilejay ij U r <br /> Chemist Supervisor <br /> Date Date <br />