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I r <br /> Project Number: SFB-175-0204.72 <br /> Consultant Project Number: 203-175-3289 <br /> Contract Number: W46CWCO244-9-X <br /> Facility Number: 9-0342 <br /> Work Order Number: 0001760 <br /> Report Issue Date: February 8, 1990 <br /> I. <br /> S 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 Limitsl: 60 - 130 % <br /> Expected Result, Surrogate Result, Surrogate Recov- <br /> GTEL No. ug/L ug/L ery, % <br /> ¢ water Blank 200 174 87 <br /> McOH Blank 200 158 79 <br /> 01 200 192 96 <br /> 02 200 168 84 <br /> 03 200 180 90 <br /> MS 200 236 118 <br /> MSD 200 164 92 <br /> I <br /> MS = Matrix Spike <br /> MSD = Matrix Spike Duplicate <br /> f 1 = Acceptability limits are derived from the 99% confidence interval <br /> of all samples during the previous quarter. <br /> d <br /> i <br /> i <br /> Lt <br /> I <br /> � !1 <br /> F: <br /> �t <br /> ` I <br /> ,:GTEL Concord, CA Page 6 of 7 <br /> D001760.000 <br /> GTEL <br /> ENVIRON MENTAL <br /> IMI LABORATORIES, INC. <br />. `4 <br />