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MATRIX ENVIRONMENTAL LABORATORIES <br /> ' ANALYSIS: METALS LABORATORY CONTROL SPIKE SUMMARY <br /> ' CLIENT: Walsh & Associates <br /> CONTACT: J. Clayton Date Sampled: N/A <br /> ' COC No: 4071 Date Received: N/A <br /> Project No: 1888-010 Date Extracted: 8/17/93 <br /> Sample ID: N/A Date of Analysis: 8/20/93 <br /> ' Lab ID: LCS/LCSD Matrix: LEACHATE <br /> CONC CONC PERCENT <br /> ' COMPOUND SPIRED MEASURED RECOVERY RPD <br /> {PPM} LCS LCSD LCS LCSD <br /> ' CADMIUM 3 .6 3 . 28 3 .31 911% 92% 1% <br /> CHROMIUM 3 .6 3 . 30 3 . 34 92% 93$ 1% <br /> LEAD 3 .6 3 . 34 3 .31 93% 92% 1% <br /> NICKEL 3 .6 3 . 22 3 .29 89% 91% 2% <br /> ZINC 1.8 1. 47 1. 56 82% 87% 6% <br /> ' <br /> LCS= LABORATORY CONTROL SPIKE <br /> ' LCSD= LABORATORY CONTROL SPIKE DUPLICATE <br /> RPD= RELATIVE PERCENT DIFFERENCE <br /> CONC= CONCENTRATION <br /> ' 3017 KILGORE ROAD 110 • HANCPO CORDOVA CA 95742 PHCNE 19161 635 3962 • FAX (915) 635 9331 <br />