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superior precision Analytical,. Inc. <br /> 825 Arnold Drive, Suite ] 14 - Martinez, California 94553 )510) 229-1512 / fax {510) 229-1526 <br /> C E R T I F I C A T E O F A N A L Y S I S <br /> LABORATORY NO. : 88475 DATE RECEIVED: 04/30/93 <br /> CLIENT: TOUCHSTONE DEVELOPMENTS DATE REPORTED: 05/07/93 <br /> CLIENT JOB NO. : 5490-2 DATE SAMPLED: 04/30/93 <br /> ANALYSIS FOR SOLUBLE CADMIUM, CHROMIUM, LEAD, & NICKLE <br /> BY CALIF. ADMIN. CODE TITLE 22 <br /> AND EPA METHOD SW-846 6010 <br /> LAB Concentration (mg/L) <br /> -##-- Sample-Identification Cadmium- -Chromium ------ ---------'-Nickle <br /> 5 ND <br /> 6 ND <br /> 7 ND <br /> 8 ND ND -- ND <br /> Comments : <br /> STLC Extraction performed using dioniaed water, not STLC extraction <br /> fluid. <br /> (!Method <br /> - m) <br /> Detection Limit- of Cadmium in Extract : 0 . 5mg/L <br /> od Detection Limit of Lead in Extract : 0 . 5mg/L <br /> od Detection Limit of Chromium in Extract : 0 . 5 mg/L <br /> od Detection Limit of Nickle in Extract : 1- mg/L <br /> QAQC Summary: MS/MSD Recovery Range: 1011-106% <br /> Duplicate RPD < lis <br /> Richard Srna, Ph.D. <br /> Laboratory Manage <br /> Certified Laboratories <br />