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. . <br /> MR <br /> Project Number. SF&175-0204.72 <br /> Consultant ProfacI Number, 15000.250-044 <br /> Contract Number N46CWCd244-9-% <br /> Facility Number: 9-6155 <br /> Work order Number: 0008737 <br /> Fteporl Issue Date: August31,1990 <br /> Table 4 <br /> SURROGATE COMPOUND RECOVERY <br /> Naphthalene <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline in Soil <br /> EPA Method 8020/8015 <br /> Acceptability Umitsl: 60-130 % <br /> Expected Result, Surrogate Result, Surrogate <br /> GTEL No. ug/L ug/L Recovery,% <br /> Water Blank 200 166 83 <br /> McOH Blank 200 211 106 <br /> 01 200 245 123 <br /> 02 200 255 128 <br /> 03 200 250 125 <br /> MS 200 189 94 <br /> MSD <br /> -200 199 99 <br /> y ' <br /> j M5 = Matrix Spike <br /> MSD = Matrix Spike Duplicate <br /> I = Acceptability limits are derived from the 99%confidence interval <br /> of all samples during the previous quarter. <br /> t <br /> G i_L Concord,CA Page 5 of 7 <br /> C008737.DCG <br /> h <br /> r F N V I CFO"MENIAL <br /> '-ALOYAtOa,Fs.INC- - <br />