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project Number: 5FB 175 0204.72 <br /> Consultant Protect Number, 16000 250-0sa <br /> Contract Number: N46CWCO244-9-X <br /> Facility Humber: 9-8155 <br /> Work Order Number: 0010620 <br /> Report Issue Date: October 25.1990 <br /> Table 4 <br /> ' SURROGATE COMPOUND RECOVERY <br /> F7 Naphthalene <br /> Purgeable Aromatics in Soil <br /> MODIFIED EPA METHOD 8024 <br /> 1 <br /> Acceptability Umitsl: 60-130 % <br /> .a Expected Result, Surrogate Result, Surrogate <br /> r <br /> GTEL No. ug/L ug/L Reccvery, <br /> I Blank 200 204 <br /> 102 <br /> 01 240 149 75 <br /> z MS 200 1123 62 <br /> MSD 200 125 <br /> MS = Matrix Spike <br /> MSD = Matrix Spike r)upifcate <br /> Acceptability limits are derived from the 99%confidence interval <br /> U ,` of all samples during the previous quarter. <br /> t <br /> �9 <br /> 1 <br /> k'n1 <br /> - - .- --- GTEL Concord,CA- <br /> G010620. Page 6 0[7 <br /> Gee _ .._.._.- _._..._. ...------------- " — . <br /> 00C <br /> T <br /> lNVIRON NENfAI <br /> LAs07Af01"5. INC. <br />