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.05/04/89 11:27 FAX 818 587 5555 CAS/CANOGA PARK Z018 <br /> COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: ARCO Products Company Service Request: L9901978 <br /> Project: WA#24406.0016020-Manteca Date Collected- NA <br /> LCS Matrix: Soil Date Received: NA <br /> Date Extracted: NA <br /> Date Analyzed: 513199 <br /> Laboratory Control Sample Summary <br /> BTEX and TPH as Gasoline <br /> Sample Name: Lab Control Sample Units: jnVKg(ppm) <br /> Lab Code: 1,990503-LCS Basis: Wet <br /> Test Notes: <br /> CAS <br /> Percent <br /> Recovery <br /> Prep Analysis True Percent Acceptance Result <br /> Analyte Method Method Value Result Recovery Limits Notes <br /> 8tnzcnc EI'A 5030 9021B 0.0400 0.0434 108 39-150 <br /> Toluene CPA 5030 9021R 0.0400 0.0436 109 46-148 <br /> r;thylbmzcnc EPA 5030 3021B 0.0400 0.0444 111 32-160 <br /> TPH as Gasoline EPA 5030 8015M 2.00 2.15 108 70-140 <br /> Approved By: Date: ',W f <br /> LCS1020597P <br /> 01978V014 A6i-LCs(2)'111?v Ma8 e Np <br />