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Project Number SFB-175-0204 72 <br /> Consultant ProIect Number 16000.250-044 <br /> Contract Number N46CWCO244-9-X <br /> Facility Number 9-6155 <br /> Work Order Number 0010176 <br /> Report Issue tate October 10, 1990 <br /> QA Conformance Summary <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline In Soil <br /> EPA Method 8020/8015 <br /> 10 Blank <br /> Frve of 5 target compounds were below detection limits inthe reagent water blank and reagent <br /> methanol blank as shown In Tables 2a and 2b <br /> 20 Independent OC Check Samole <br /> The control limits were met for 4 out of 4 QC check compounds as shown In Table 3 <br /> 30 Surrogate Compound Recoveries <br /> Percent recovery limits were met for the surrogate compound (naphthalene) for all samples <br /> as shown In Table 4 <br /> 40 Matrix Spike (MS) n Matrix Sl2ike Duplicate (M D Agguracy andPrecisi n <br /> 41 Percent recovery limits were met for 4 of 4 compounds In the MS and MSD as shown In Table <br /> 5 <br /> 42 Relative percent difference (RPD) criteria was met for 4 of 4 analytes In the MS and MSD as <br /> shown In Table 5 <br /> 50 Sample Handling <br /> 51 Sample handling and holding time criteria were met for all samples <br /> 52 There were no exceptional conditions requiring dilution of samples <br /> GTEL Concord CA Page 3 of 7 <br /> 0010176 DOC GTEL <br /> E,N VI RONM ENTAL <br /> ® LABORATORIES INC <br />