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Proiect Number: SFB-175-0204.72 <br /> Concultant Project Number: 203-175.3291 <br /> Contract Number: N46CVYCO244-9-X <br /> Facility Number: 54)557 <br /> Work Order Number: D004128 <br /> Report Issue Date: April 10,1990 <br /> QA Conformance Summary <br /> Purgeable Hydrocarbons In Soil <br /> EPA Method B240 <br /> 1.0 Blanks <br /> One of 39 target compounds found in Reagent water blank and McOH blank as shown in <br /> Tables 2 and 2a. <br /> 2.0 Independent h Sample <br /> The control limits were met for 8 of 8 QC check compounds in the aqueous OC check <br /> sample as shown in Table 3. <br /> 3.0 Surroaate Compound Recovyg iQs <br /> Recovery limits were met for all three surrogate compounds for all samples as shown in <br /> Tables 4a,4b, and 4c. <br /> 4.0 Matrix 9pikp, (MS) n Matrix Spikp, Dul2licate (M$D) Accurary gndr <br /> . 4.1 Accuracy: <br /> Percent recovery limits were met far 10 of 10 compounds in the MS and MSD as shown in <br /> Table 5. <br /> 4.2 Precision: <br /> Relative Percent Difference (RPD) criteria were met for 5 of 5 compounds in the MS and <br /> MSD as 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 /> i <br /> GTEL Concord,CA Page 3 of 12 IGTEL <br /> D004128.DOC EN V I R o N M E NT AL <br /> LABORATORIES, INC <br />