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SpargeroAnalytical Laboratory Dryislon <br /> Technok)gylnc Mobile Laboratory Drnsion <br /> Scientific Dmslon <br /> With Automation in Mind <br /> 8020 Modified Matrix Spike (MS) & Matrix Spike Duplicate (MSD) <br /> BTEX Analysis Report <br />' Attention Mr Bob Marty Date Sampled Oct 6, 1993 <br /> Geological Audit Date Received Oct 8, 1993 <br /> 1803 W March Lane, Suite A <br /> Stockton, CA 95207 <br /> Project ID Project Name Mid-Cal II <br />' Client ID MS/MSD LAB ID ST93-10-015 MS <br /> ST93-10-015 MSD <br />' Matrix Soil 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 28 28 ug/kg 93% 93% 0% <br />' Toluene 30 ppb ND 29 29 ug/kg 97% 97% 0% <br /> E=thylbenzene 30 ppb ND 29 29 ug/kg 97% 97% 0% <br />' Xylenes 30 ppb NO 29 29 ug/kg 97% 97% 0% <br />' Surrogate % Recovery of Trifluorotoluene = 93% MS 97% MSD <br />' ppb = parts per billion = ug/kg —micrograms per kllogrem <br /> ppm- parts per million= uglq - micrograms per gram <br /> NO = Not Detected Compound(s)may be present at concentrations below the detection limit <br /> Oct 15, 1993 <br /> R L James Principal Chemist DATE <br />' SPARGER TECHNOLOGY ANALYTICAL LABORATORY INC IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> (Certification No 1614) <br /> I <br /> 3050 Fite Circle Suite 112 * Sacramento California 95827 • (916) 362-8947 * FAX (916) 362-0947 <br />