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Project Number: SFB 175-0204.72 <br /> Consultan!Praleet Number: 16000.250044 <br /> SS ;� Contract Number: N46CWCC2a49-X <br /> {� Facility Number: 9-6115 <br /> Work Order NuEnber: C010348 <br /> Fiepert Issue Date: October 18,1990 <br /> l <br /> 3 Table 4 <br /> t=� SURROGATE COMPOUND RECOVERY <br /> ?i Naphthalene <br /> Purgeable Aromatics in Soil <br /> MC)DIFIED EPA METHOD 8020 <br /> Acceptability Limitsl: 60-130 % <br /> IExpected Result, Surrogate Result, Surrogate <br /> GTEL No. ug/L ug/L Recovery,% <br /> i Blank 200 179 90 <br /> Oi 200 169 85 <br /> Q2 200 167 84 <br /> €"' 03 200 170 85 <br /> 04 200 169 85 <br /> 06 200 165 83 <br /> MS 200 222 111 <br /> MSD 200 217 109 <br /> MS = MaIm Spike <br /> MSD = Matrix Spike Duplicate <br /> 1 = Acceptability limits are derived from the 9936 confidence interval <br /> of all samples during the previous quarter. <br /> I ` <br /> i <br /> GTCL Concord,CA Page 5 of 6 <br /> �-/ C010.348.DOC <br /> a., <br /> TEL <br /> ENYIQONMFYfAL <br /> ® lA30QAt041£5. INC. <br />