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COLUMBIA ANALYTICAL SERVICES, INC. <br /> QA/QC Report <br /> Client EMCON Associates Service Request- 5950192 <br /> Project ARCO Facllm No 760/EMCON Project No 1-"5-2I2 01 Date Analyzed 2/22, 2123/95 <br /> Initial Calibration Verification(ICV) Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 503018020/Califorrua DHS LUFF Method <br /> Units ppb <br /> CAS <br /> Percent <br /> Recovery <br /> True Percent Acceptance <br /> Analvte Value Result Recovery Limits <br /> Benzene 25 25 6 102 85-115 <br /> Toluene 25 248 99 85-115 <br /> Ethylben-rcne 25 24 9 100 85-115 <br /> Xylenes Total 75 73 7 98 85-115 <br /> Gasoline 250 247 99 90-110 <br /> Approved By ff'gu— Date _ 311 /g r___ <br /> IC V25AL'06M94 <br /> Page 6 <br /> 1971 Pinnwnnrl Avannn • r,-- I..... r io - nrA-14 . T-t-..4- <br /> -- <br />