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SpargeroAnalytical LaboratoryDivision <br /> . <br /> Mobile Laboratory Division <br /> Technoboy inc. Scientiflc Division <br /> With Automotion in Mind <br /> 8020 Modified Matrix Spike (MS) & Matrix Spike Duplicate (MSD) <br /> BTEX Analysis Report <br /> Attention: Mr. John Cummings Date Sampled: Oct 27, 1993 <br /> John P. Cummings & Associates Date Received: Oct 28, 1993 <br /> P.O. Box 2847 <br /> Fremont, CA 94536-2847 <br /> Project ID: Project Name: Hess - Stockton <br /> Client ID: MS/MSD LAB ID: ST93-11-001 MS <br /> ST93-11-001 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 28 ug/kg 100% 93% 7% <br /> Toluene 30 ppb ND 30 29 ug/kg 100% 97% 3% <br /> Ethylbenzene 30 ppb ND 29 29 ug/kg 97% 97% 0% <br /> Xylenes 30 ppb ND 30 29 ug/kg 100% 97% 3% <br /> Surrogate % Recovery of Trifluorotoluene = 100% MS 93% MSD <br /> PPb- Parte Per billion —rgft microGrama par IdloWern <br /> Ppm- parts Per million_uG/G —mlCr*Ww a par Gram <br /> ND -Not Detected. Compo ndls)may be present at conearrtradorw baiew the detection limit. <br /> Nov 1, 1993 <br /> R. L.James, Principal Chemist PATE <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 /> ICartiticadon No,16141 <br /> 3050 Fite Circle; Suite 112 • Sacramento, Ccirfomio 95827 • (946) 362-8947 • FAX(916) 362-0947 <br />