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Protect Number: SF&175-0204.72 <br /> Consultant Project Number: 203-175-3291 <br /> Contract Number: N46CWCO244-9-X <br /> Facility Number: 9-0557 <br /> Work',Order Number: D004126 <br /> Report Issue Date: April 11, 1990 <br /> QA Conformance Summary <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline in Soil <br /> EPA Method 8020/8015 <br /> 1.0 Blanks <br /> Five of 5 target compounds were below detection I imus in the reagent water blank and reagent <br /> methanol blank as shown in Tables 2a and 2b. <br /> 2.0 LndQpendent QC Check S mmple_ <br /> The control limits were met for 4 out of 4 QC check compounds as shown in Table 3. <br /> 3.0 $surrogate Compound RecQveries <br /> . Percent recovery limits were met for the surrogate compound (naphthalene) for 13 of 17 <br /> samples as shown in Table 4. <br /> 4.0 M trix Spike (MS) and Matrix Spike D li t M D Accuracy n Precision <br /> 4.1 Percent recovery limits were met for 4 of 4 compounds in the MS and MSD as shown in Table <br /> 5. <br /> 4.2 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 Handling <br /> 5.1 Sample handling and holding time criteria were met for all samples. <br /> 5.2 There were exceptional conditions requiring dilution of samples. <br /> GTEL Concord,CA Page 3 of 7 <br /> • D004126.DOG <br /> GTEL R <br /> LABORATORIES. INC <br />