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Sparger Analytical Laboratory Dmsion <br /> Mobile Laboratory Division <br /> Technology Inc Scientific Division <br /> ' With Automation in M1nd <br /> ' 8020 Modified Laboratory Control Spike (LCS) & <br /> Laboratory Control Spike Duplicate (LCSD) BTEX 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 /> iProject ID S8100-06-11B project Name Stockton Yard <br /> Client ID LCSILCSD LAB ID ST96-02-002LCS <br /> ' ST96-02-002LCSD <br /> Matrix Sod Dilution <br /> Conc. Sample LCS LCSD LCS % LCSD % % 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 29 30 ug/kg 97% 100% 3% <br /> Ethylbenzene 30 ppb ND 29 28 ug/kg 97% 93% 4% <br /> Xylenes 30 ppb ND 31 29 ug/kg 103% 97% 7% <br /> ' Surrogate % Recovery of Trlfluorotoluene = 102% LCS 97% LCSD <br /> ppb=parts per billion=ug/kg=micrograms per kilogram <br /> ppm=parte per million=uglg=micrograms per gram <br /> ' ND=Not Detected Compound(s)maybe present at concentrations below the detechon limit <br /> 1 <br /> Feb 6, 1996 <br /> R L James, Principal Chemist Date Reported <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 /> ' (Certrlicatton No 1614) <br /> ' utrSr ' ?2 ® Sacramento Colifornio 95827 . (996) 362-8947 . FAX (996) 362-0947 <br /> 10,51? Fite Orelp <br />