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1 <br /> . GOLDEN STATE I CAS LABORATORIES, INC. <br /> (2A/QC Report <br /> Client. EMCON Associates Date Analyzed: 08/24/93 <br /> Project- ARCO Products Company/#OG71-050 01 Service Request No LA932617 <br /> Sample Matrix Water <br /> 1 <br /> 1 Matrix Spike/Duplicate Matrix Spike Summary <br /> Total Lead <br /> EPA Method 7421 <br /> mg/L (ppm) <br /> 1 <br /> Lab Code LA2620-1 <br /> i. <br /> Percent Recovery <br /> GS/CAS Relative <br /> Spike Level Sample Spike Result Acceptance Percent <br /> Analyte MS DMS Result MS DMS MS DMS Criteria Difference <br /> 1 <br /> Total Lead 00400 00400 ND 00331 00323 83 81 75-125 2 <br /> 1 <br /> ND None Detected at or above the method reporting limit <br /> i <br /> Approved by ))4 P Ct— Date X Ld 9 <br /> 6925 CANOGA AVENUE 0 CANOGA PARK, CA 91 303 0 818 587 5550 ■ FAY 818 587 5555 <br />