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Spargerto Analytical Laboratory DrOsion <br /> Mobile Laboratory Division <br /> Tetr h�1 �oto y Inc Scientific Dnrislon <br /> ltitlf I Ili�fc7mattcx� rn Mui y <br /> c <br /> 8020 Modified Matrix Spike (MS) & Matrix Spike Duplicate (MSD) <br /> DTEX Analysis Report <br /> �ttention Mr Rick Walls Date Sampled Jan 31, 1996 <br /> Geocon Environmental Date Received Feb 1, 1996 <br /> 3235 Sunrise Blvd , Ste 6 Date Analyzed Feb 8, 1996 <br /> ' Rancho Cordova, CA 95742 Invoice# 6231 <br /> Protect ID S8100-06-11B Project Name Stockton Yard <br /> Ilient ID MS/MSD (Batch) LAB ID ST96-02-098A,6246 <br />�atnx 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 25 24 uglkg 83% 80% 4% <br /> Toluene 30 ppb ND 24 26 uglkg 80% 87% 8% <br /> fl,lbenzene 30 ppb ND 24 27 ug/kg 80% 90% 12% <br /> Xylenes 30 ppb ND 24 28 ug/kg 80% 93% 15% <br /> lurrogate % Recovery of Trifluorotoltlene = 84% MS 82% MSD <br /> l0b <br /> =pens her billion=ugMg=micrograms per kilogram <br /> m=pans per million=uglg=mitrograms per gram <br /> =Not Detected Compound(s)may be present at concentrations below the detection limit <br /> Feb 9, 1996 <br /> L .lames, 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 /> (Certdlcatlon No 1614) <br /> 305101,fe Oic.le Suite 112 o Sactorr7ento Colifornla 95827 o (916) 362-8947 o FAX (996) 362-0947 <br />