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t COLUMBIA O UMBiA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> Client- EMCON Service Request- K9505156 <br /> Project ARCO#760/EMCON Project No 1775-212 001 Date Collected. NA <br /> LCS Matrix Water Date Recer%ed: NA <br /> Date Extracted: 8/29195 <br /> Date Analyzed: 8/29-30/95 <br /> Laboratory Control Sample Summary <br /> Total and Nonpolar Oil and Grease <br /> Standard Method SM 5520B&F <br /> Units mg/L(ppm) <br /> CAS <br /> Percent <br /> Recovery <br /> True Percent Acceptance <br /> Analvte Value Result Recon ery Limits <br /> Oil and Grease 50 47 64-119 <br /> Lcs11ozwa <br /> Page 14 <br />