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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 9-6115 <br /> Work Order Number C010348 <br /> Report Issue Date October 18 1990 <br /> QA Conformance Summary <br /> Purgeable Aromatics in Soli <br /> MODIFIED EPA METHOD 8020 <br /> 10 Blanks <br /> Four of 4 target compounds were below detection limits In the reagent water blank and reagent <br /> methanol blank as shown in Tables 2a and 2b <br /> 20 Independent QC Check Sammi <br /> The control limits were met for 4 out of 4 QC check compounds as shown in Table 3 <br /> 30 yaurmgate Compound Recovenes <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)and Matnx Spike Duplicate (MSD)Accuracy and Prgclslon <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 Hnlin <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 2 of 6 <br /> C010348 DOC GTEL <br /> -FN VI R 0 N"E N rA- <br /> ® LABORATORIES INC <br />