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Project Number: SFB-17540204.72 <br /> Consultant Project Number: 203-17515-W,�fj <br /> Contract Number: N46CWCO2441X <br /> Facility Number: 94)557 <br /> Work Order Number: D005261 <br /> Report Issue Date: May 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 limits in the reagent water blank and reagent <br /> methanol blank as shown in Tables 2a and 2b. <br /> 2.0 Independent QQ Qheck Sample <br /> The control limits were met for 4 out of 4 QC check compounds as shown in Table 3. <br /> . 3.0 .5urrogate QgmD!21jndRecoveries <br /> Percent recovery limits were met for the surrogate compound (naphthalene) for all samples <br /> as shown in Table 4. <br /> 4.0 Matrix S12ike (M—ShandM trix Spike DuplioteM D)-Accuracy and 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 no exceptional conditions requiring dilution of samples. <br /> GTEL Concord,CA Page 2 of 6 <br /> D005261.DOC <br /> IG TL <br /> E N V 1 R O N E N T A L <br /> LASORA10RIES. iNC. <br />