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Project Number SF&175-0204 72 <br /> Consultant Project Number 16000-242-044 <br /> Contract Number N46CWCO244-9-X <br /> Facility Number 9-6155 <br /> Work Order Number C009120 <br /> Repart Issue Date September 11, 1990 <br /> Table 4 <br /> SURROGATE COMPOUND RECOVERY <br /> Naphthalene <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline In Sod <br /> EPA Method 8020/8015 <br /> Acceptability Ljmdsl 60 -130 % <br /> Expected Result, Surrogate Result, Surrogate <br /> GTEL No ug/L ug/L Recovery, % <br /> Water Blank 200 219 110 <br /> McOH Blank i 200 179 90 <br /> 01 200 163 82 <br /> 02 200 169 85 <br /> 03 200 169 84 <br /> MS 200 166 83 <br /> MSD 200 167 84 <br /> MS = Matrix Spike <br /> MSD = Matrix Spike Duplicate <br /> 1 = Acceptability limits are derived from the 99% confidence interval <br /> of all samples during the previous quarter <br /> GTEL Concord CA Page 6 of 7 <br /> C009120 DOC <br /> GTEL <br /> R <br /> ® LASORATORIES SNC <br />