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Project Number: SFB-175-0204.72 <br /> Consultant Project Number: 203-175-3289 j <br /> Contract Number: N46CWCO244-9-x <br /> Facility Number: 9-0342 <br /> Work Order Number: D002237 <br /> Report issue Date: February 20, 1990 <br /> I <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 OC Check Sample <br /> The control limits were met for 4 out of 4 QC check compounds as shown in Table 3. <br /> 3.0 surrogate Compound Recoveries ` <br /> Percent recovery limits were met for the surrogate compound (naphthalene) for all samples as <br /> shown in Table 4. I <br /> t <br /> 4.0 Matrix Spike (MS) and Matrix Spike Duplicate (MSD) 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 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 Sa le Handling <br /> 5.1 sample handling and holding time criteria were met for all samples. b <br /> 5.2 There were no exceptional conditions requiring dilution of samples. <br /> f <br /> i <br /> I <br /> I <br /> . I <br /> I <br /> - I <br /> GTEL Concord, CA Page 3 of 7 <br /> D002237.DOC <br /> GTEL } <br /> LW ENV IRONMEN T A L <br /> LABORATORIES, INC. 1 <br /> _ I <br />