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GOLDEN STATE 1 CAS LABORATORIES, INC. <br />► QAIQC Report <br /> Client- EMCON Associates Date Extracted: 11/03/93 <br /> Project: ARCO Products Company/#2076 Date Analyzed 11/03/93 <br /> Sample Matrix: Water Service Request No . LA933165 <br /> I Matrix Spike/Duplicate Matrix Spike Summary <br /> Total Lead <br /> EPA Method 7421 <br /> m9/L (ppm) <br /> I <br /> Lab Code LA3198-1 <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 />► <br /> Lead 00400 00400 0 0056 0 0376 0 0367 80 78 75-125 2 <br />► <br /> 1 <br /> Approved by R Date_ ll-�f -93 0000 <br /> I <br /> 6925 CANOGA AVENUE ■ CANOGA PARK, CA 91 303 ■ 818 587-5550 ■ FAX 818 587-5555 <br />