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GeoAnalytical Laboratories, Inc. <br />2300 Maryann Dr. Turlock, CA 95380 Phone (209) 669-0100 Fax(209)668-9516 <br />entail: lab.geo@att.net <br />Report # V9I0224 Project: 25327 Jones Road, Escalon CA 95320 <br />San Joaquin County Environmental Health <br />600 East Main Street PO# PA# 197375 <br />Stockton, CA 95202 <br />Volatile Organic Chemistry - Quality Control <br />GeoAnalytical Laboratories, Inc. <br />Date: 09/09/09 <br />Date Recd: 09/02/09 <br />Reporting Spike Source %REC RPD <br />lAnalyte Result Limit Units Level Result %ggC Limits RPD Limit Notes <br />Batch V002445 - EPA 5030B <br />Prepared & Analyzed: 09/02/09 <br />Blank(Vti02445-BLKI) <br />0.293 <br />a2500 <br />Gasoline <br />ND <br />0.05 mg/L <br />2.500 <br />89 <br />80-120 <br />Surrogate: a.a.a-Trrfluorotoluene <br />0.0231 <br />" <br />0.01500 <br />92 <br />70-115 <br />LCS (V002445 -BSI) <br />2.6 1.0 mg/kg <br />2.500 0.3 <br />91 <br />64-143 <br />Gasoline <br />0.20 <br />0.05 mg/L <br />0.2500 <br />80 <br />80-120 <br />Surrogate: aa,a-Trrfluorotoluene <br />0.0288 <br />0.02500 <br />115 <br />70-115 <br />Matrix Spike_ (VO02445-MSI) <br />Source: V9110221-01 <br />Gasoline <br />0.22 <br />0.05 mgfL <br />0.2500 ND <br />87 <br />64-143 <br />Surrogate: a,a,a-Triuorotoluene <br />0.0312 <br />0.02500 <br />115 <br />70-125 <br />Matrix Spike Dup (V002445-MSDI) <br />Source: V910221-01 <br />Gasoline <br />0.22 <br />0.05 mg/L <br />0.2500 ND <br />90 <br />64-143 3 22 <br />Surrogate: a. a. a-Triuorotoluene <br />0.0250 <br />0.02500 <br />l00 <br />70-125 <br />Batch V002518 - EPA 5030 <br />Prepared <br />& Analyzed: 09/09/09 <br />Blank (V 2518-BLK1) <br />Gasoline <br />Surrogate: a,a,a-Trrfluorotoluene <br />LCS (VO02518-BSI) <br />Gasolinc <br />Surrogate: a.a,a-Trrfluorotoluene <br />Matrix Spike (V002518 -MSI) <br />Gasoline <br />Surrogate: a, a. a-Trrfluorotoluene <br />ND 1.0 mg/kg <br />0.293 <br />a2500 <br />//7 <br />66-117 <br />2.2 1.0 mg/kg <br />2.500 <br />89 <br />80-120 <br />0.319 <br />a2500 <br />131 <br />66-117 <br />Source: V91022 <br />2.6 1.0 mg/kg <br />2.500 0.3 <br />91 <br />64-143 <br />x265 <br />x2500 <br />106 <br />66-117 <br />Certification # 2585 <br />