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Spargero Analytical Laboratory DpAsion <br /> Mobile Laboratory Dnnsion <br /> TechnologyInc Scientific Division <br /> With Automation in Mind <br /> 8020 Modified Matrix Spike (MS) & Matrix Spike Duplicate (MSD) <br /> BTEX Analysis Report <br /> Attention Mr Bob Marty Date Sampled Oct 18, 1993 <br />' Geological Audit Date Received Oct 18, 1993 <br /> 1803 W March Lane, Ste A <br /> Stockton, CA 95207 <br />' Project 1D Protect Name Mid-Cal Leagmg ll <br /> t Client ID MS/MSD LAB ID ST93-10-020 MS <br /> ST93-10-020 MSD <br /> Matrix Water 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 31 31 ug/L 103°% 103% 0% <br /> Toluene 30 ppb ND 31 31 ug/L 103% 103% 0% <br /> Ethylbenzene 30 ppb ND 31 31 ug/L 103% 103% 0% <br />' Xylenes 30 ppb ND 31 30 ug/L 103% 100% 3% <br />' Surrogate % Recovery of Trifluorotoluene = 100% MS 100% MSD <br />' ppb —parts per billion— up/L —micrograms per liter <br /> ppm=parts per million ug/ml = micrograms per milliliter <br /> ND =Not Detected Compoundlal may be present at concentrations below the detection limit <br />' Oct 20, 1993 <br /> R L James, Principal Chemist Date <br />' SPAR13ER TECHNOLOGY ANALYTICAL LABORATORY INC IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> iCertdication No 16141 <br /> 3050 Fite Circle Suite 112 e Sacramento California 95827 9 (996) 362-8947 • FAX (996) 362-0947 <br />