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Project Number SFB 175-0204 72 <br /> Consultant Project Number 1600-250-044 <br /> Contract Number N46CWCO244-9-X <br /> Facility Number 9-6155 <br /> Work Order Number C009524 <br /> Report Issue Date September 27, 1990 <br /> OA Conformance Summary <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline to Soil <br /> EPA Method 8020/8015 <br /> 10 Blank <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 /> 20 Independent OC Check Sam le <br /> The control limits were met for 4 out of 4 OC check compounds as shown In Table 3 <br /> 30 Surroclatg Compound Recoveries <br /> Percent recovery limits were met for the surrogate compound (naphthalene) for all samples <br />• as shown In Table 4 <br /> 40 Matrix S12ike MS) and Matrix ragike Duplicate (MSQ) Acguracy and Precisign <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 anaiytes In the MS and MSD as <br /> shown In Table 5 <br /> 50 Sample Handlin <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 /> I <br /> GTPL ConcordCA Page 3 of 7 <br /> coaq�-24 roc G7E L <br /> E N V I R O N N E NTA_ <br /> ® tAEoRATOUES INC <br />