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4 <br /> i . <br /> Project Number: $FB-175-0204.72 <br /> Consultant Project Number: 16000.250-044 <br /> Contract Number: N46CWCO2"5.X <br /> Facility Number: Not Given " <br /> Wark Order Number. C008790 <br /> Report issue Date: September 5,1990 <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 Limits 1: 60-130 % <br /> -- Expected Result, Surrogate Result, Surrogate <br /> GTEL No. ug/L ug/L Recovery, <br /> Water Blank 200 231 116 <br /> McOH Blank 200 189 95 <br /> �- 01 200 181 91 <br /> 02 200 211 106 <br /> € 03 200 171 86 <br /> t j MS 200 190 95 <br /> a MSD 200 173 86 <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 /> C008790.DOC <br /> r <br /> GTEL <br /> ExvlQOxeAFH tI: <br />