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Project Number SFB-175.0204 72 <br /> Consultant Project Number 16000-250.044 <br /> Contract Number N46CWCO244-9.X <br /> Facility Number 9-6155 <br /> Work Order Number 00098387 <br /> Report Issue Date September 20 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 /> Five of5 target compounds were belowdetectlon limas inthe reagent water blank and reagent <br /> methanol blank as shown in Tables 2a and 2b <br /> 20 IndgDendent QC Qheck Sample <br /> The control limits were met for 4 out of 4 GC check compounds as shown in Table 3 <br /> 30 SurrQaate CompoundRecoveries <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 S12ike Duplicate (M$D) Accuracy nd Precision <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 /> 5 0 Sample Han fin <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 /> 40 GTEL Concord CA Page 3 of 7 <br /> C009387 DOC GTEL <br /> EN Y I R O N M E%T A L <br /> ® 4ABORATORI'S INC <br />