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Project Number SFE-175-0204 72 <br /> Consultant Project Number 16000-250-044 <br /> Contract Number N46CWCO244-9-X <br /> Facility Number 9-6155 <br /> Work Order Number 0009164 <br /> Report issue Date September 13, 1990 <br /> Table 4 <br /> SURROGATE COMPOUND RECOVERY <br /> Naphthalene <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline in Sall <br /> EPA Method 8020/6015 <br /> Acceptability Ljmltsl 60- 130 % <br /> Expected Result, Surrogate Result, Surrogate <br /> GTEL No ug/L ug/L Recovery, % <br /> Water Blank 200 176 88 <br /> McOH Blank 200 161 81 <br /> 01 200 172 1 86 <br /> 02 200 182 91 <br />. 03 200 193 96 <br /> MS 200 175 87 <br /> MSD 200 165 83 <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 o"of 7 <br /> C009164 DOC GTE <br /> L <br /> f N v I R O N 0;N T A L <br /> ® ;A509ATORIES INC <br />