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Srgero Analytical Laboratory Division <br /> TechnologyInc. Mobile Laboratory Division <br /> Scientific Division <br /> nin Mind <br /> 8020 Modified Matrix Spike (MS) & Matrix Spike Duplicate (MSD) <br /> BTEX Analysis Report <br /> Attention: Mr. Richard Nickerson Date Sampled: Jul 16, 1993 <br /> Ramos Environmental Eng. Date Received: Jul 19, 1993 <br /> 1515 S. River Road <br /> W. Sacramento, CA 95691 <br /> Project ID: Project Name: Newark Sierra <br /> 808 Church St., Stockton <br /> Client ID: MS/MSD LAB ID: ST93-07-021 MS <br /> ST93-07 021 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 30 30 ug/kg 100% 100% 0% <br /> Toluene 30 ppb ND 30 29 ug/kg 100% 97% 3% <br /> Ethylbenzene 30 ppb ND 30 29 ug/kg 100% 97% 3% <br /> Xylenes 30 ppb ND 30 29 ug/kg 100% 97% 3% <br /> Surrogate % Recovery of Trifluorotoluene = 100% MS 100% MSD <br /> ppb = parts per billion uglkg = micrograms per kilogram <br /> ppm— pens per million = uglgmicrograms per gram <br /> NO = Not Detected. Compound el may be present at concentrations below tM detection limit. <br /> Jul 21, 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.161,0 <br /> 3050 Fite Circle, Suite 112 • Sacramento, California 95827 • (916) 362-8947 • FAX (916) 362-0947 <br />