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SparAnalyticaler Laboratory Division <br /> Mobile Laboratory Division <br /> • Technoicgyinc Scientiflc Division <br /> With Automotion in Mind <br /> 8020 Modified Matrix Spike (MS) & Matrix Spike Duplicate (MSD) <br /> _ BTEX Analysis Report <br /> Attention Mr Bob Marty Date Sampled Jan 14, 1994 <br /> Geological Audit Services, Inc Date Received Jan 17, 1994 <br /> 1803 West March Lane, Suite A <br /> Stockton, CA 95207 <br /> Project ID Project Name Mid-Cal Leasing Il <br /> Client ID MS/MSD LAB ID ST94-01-031 MS <br /> ST94-01-031 MSD <br /> Matrix Water Dilution <br /> Conc Sample MS MSD MS % MSD % % RPD <br /> Name Spike Added Result Result Result Units Recovery Recovery Recovery <br /> . Benzene 30 ppb ND 35 31 ug/L 117% 103% 12% <br /> Toluene 30 ppb ND 36 31 ug/L 120% 103% 15% <br /> Ethylbenzene 30 ppb ND 35 31 ug/L 117% 103% 12% <br /> Xylenes 30 ppb ND 34 32 ug/L 113% 107% 6% <br /> Surrogate % Recovery of Trifluorotoluene = 97% MS 97% MSD <br /> ppb = parts per billion = uglL = micrograms per liter <br /> ppm= parts per million ug/ml = micrograms per milliliter <br /> NO = Not Detected Compoundisl may be present at concentrations below the detection Omit <br /> Feb 2, 1994 <br /> R L James Principal Chemist Date <br /> SPARGER TECHNOLOGY ANALYTICAL LABORATORY INC IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> 0' DEPARTMENT Or H£A47H SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> lCertdication No 1614) <br /> 3050 Fite Circle Suite 112 0 Sacramento California 95827 o (996) 362-8947 c FAX(996) 362-0947 <br />