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COLUMBIA ANALYTICAL SERVICES, INC. <br /> QA/QC Report <br /> Client' EMCON Service Request- 595101$ <br /> Project- 1775-212 001 1 TO## 17075 00 / 760 Lodi Date Analvzed 8/24195 <br /> Initial Calibration Verification(ICV) Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 503018020/California DHS LUFT Method <br /> Units ppb <br /> CAS <br /> Percent <br /> Recovery <br /> True Percent Acceptance <br /> Anal�te Value Result Recovery Limits <br /> Benzene 25 23 6 94 85-115 <br /> Toluene 25 226 90 85-115 <br /> Eth-*lbenzene 25 228 91 85-115 <br /> X%lenes Total 75 660 88 85-115 <br /> Gasoline 250 234 94 90-110 <br /> • <br /> ICV25AL060194 <br /> Page 9 <br />