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M <br /> I <br /> S <br /> Project Humber: SF3175-0204.72 <br /> I Consultant Project Number. 203.1753289 <br /> Contract Number. N46CWCO244I--9-X <br /> Facility Number. 04ON2 <br /> Workf der Number: <br /> Report Iswe tato: August 28,19W <br /> Table 4 <br /> SURROGATE COMPOUND RECOVERY <br /> Naphthalene <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline In Water <br /> EPA Method 8020/8015 <br /> Acceptability Llmhsl: 70-130 0% <br /> -s Expected Surrogate Surrogate <br /> " GTEL No. Result,ug/L Result,ug/L Recovery,% <br /> s=+ Blank 200 238 119 <br /> �t 01 200 259 130 <br /> 02 200 253 127 <br /> E031 200 216 108 <br /> 200 230 i15 <br /> f-4200 218 109 <br /> 200 179 90 If 200 192 98 <br /> a <br /> MS - Matrix Spike <br /> r� WS ` Reagent Water Spike <br /> WSD A Reagent Water Spike Duplicate <br /> 1 . Acceptability limits are derived from the 99%confidence Interval <br /> of all samples during the previous quarter. ; <br /> t� <br /> i ; <br /> i . <br /> GTEL Concord,CA Page 3 of 7 <br /> GTEL <br /> ' _ - _ IXVIRONMEXiAt - <br /> rARORATORKV INC - <br />