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6Spargero Analytical Laboratory Division <br /> TienhnologyInc Mobile Laboratory Dn+ision <br /> IW Scientific Division <br /> ' Wrth Automation in Mnc 1 <br /> ' 8020 Modified Matrix Spike (MS) & Matrix Spike Duplicate (MSD) <br /> DTEX Analysis Report <br /> 'Attention Mr Rick Walls Date Sampled Jan 30, 1996 <br /> Geocon Environmental Date Received Jan 31, 1996 <br /> ' 3235 Sunrise Blvd , Ste 6 Date Analyzed Feb 2, 1996 <br /> Rancho Cordova, CA 95742 Invoice# 6228 <br /> ' Project ID S8100-06-11B Project Name Stockton Yard <br /> Client ID MS/MSD LAB ID ST96-01-1955MS <br /> ST96-01-1955MSD <br /> ' Matrix Soil Dilution <br /> ' Conc Sample MS MSD M5 % MSD % % RPD <br /> Name Spike Added Result Result Result Units Recovery Recovery Recovery <br /> Benzene 30 ppb ND 29 24 ug/kg 97% 80% 19% <br /> Toluene 30 ppb ND 31 26 ug/kg 103% 87% 18% <br />' Ethyibenzene 30 ppb ND 30 27 ug/kg 100% 90% 11% <br /> Xylenes 30 ppb ND 31 27 ug/kg 103% 90% 14% <br /> 1 <br /> Surrogate % Recovery of Trifkuorotoluene = 93% MS 85% MSD <br />'ppb=parts per billion=ug/kg=micrograms per kilogram <br /> ppm=parts per million=uglg=micrograms per gram <br /> ND=Not Detected Compound(s)may be present at concentralions below the detection limit <br /> Feb 6, 1996 <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 />' {Ceddicauan No 1614) <br />' 3050 Fite Circle Suite 112 © Sacramento California 95827 - (996) 362-8947 - FAX (916) 362-09-47 <br />