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Project Number SFB-175-0204 72 <br /> Consultant Project Number 18000.250-044 <br /> Contract Number N46CWCO244-9-X <br />. Facility Number 9-6155 <br /> Work Order Number C010620 <br /> Report Issue Date October 26, 1990 <br /> OA Conformance Summary <br /> Purgeable Aromatics In Soil <br /> MODIFIED EPA METHOD 8020 <br /> 10 Blanks <br /> Four of 4 target compoundswere below detection limits in the reagent water blank and reagent <br /> methanol blank as shown in Tables 2a and 2b <br /> 20 lndeogndent.QC CherUAM-210 <br /> The control limits were met for 4 out of 4 OC check compounds as shown In Table 3 <br /> 30 Surro 3atem n R v n <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 Matrix Spike Duplicate MSD Accuracy and 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 /> 50 �am le 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 /> COIC620 DOC G 7 E L <br /> E N,k R O N M E I A L <br /> ® LABORATO"S 'MC <br />