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1 <br /> Sparger 0' Analytical Laboratoryry Drnslon <br /> _pbIchnologyInc: Mobile Laboratory Drnslon <br /> Scientific <br /> Drnsion <br /> tom t,,or; )n Mind <br /> ' EPA Method 8020 <br /> Modified Laboratory Control Spike (LCS) & <br /> ' Laboratory Control Spike Duplicate (LCSD) BTEX Analysis Report <br /> Attention Mr Vern Bennett Date Sampled Jul 30, 1997 <br /> GHH Engineering, Inc Date Received Aug 1, 1997 <br /> 8084 Old Auburn Rd Date Analyzed Aug 12, 1997 <br /> Citrus Heights, CA 95610 Invoice# 8163 <br /> Project ID 5007J3 Project Name USA-Stockton <br /> Client ID LCS/LCSD LAB ID 8163-LCS <br /> 8163-LCSD <br /> Matrix Water Dilution 1 1 <br /> ' Spike Sample LCS LCSD LCS % LCSD % % RPD QC Limits <br /> Name Added Conc Result Result Units Recovery Recovery Recovery RPD %Rec <br /> Benzene 30 ND 32 30 ug/l 107% 100% 6% 20 65-135 <br /> ' Toluene 30 ND 37 35 ug/I 123% 117% 6% 20 65-135 <br /> Ethylbenzene 30 ND 39 37 ug/I 130% 123% 5% 20 65-135 <br /> m,p-Xylenes 60 ND 75 69 ug/I 125% 115% 8% 20 65-135 <br /> ' o-Xylenes 30 ND 41 38 ug/I 137% 127% 8% 20 65-135 <br /> ' Surrogate % Recovery of Trifluorotoluene = 105% LCS 92% LCSD <br /> ppb=pans pet billion=ugll=micrograms per Iver <br /> ' ppm=parts par million=ug/mi=micrograms per milliliter <br /> ND=Nat Detected Compoundis)maybe present at concentrations below the detection limit <br /> 1 <br /> ' - Aug 14, 1997 <br /> R L James Principal Chemist Date Reported <br /> SPARGER TECHNOLOGY ANALYTICAL LA80RATORY INC IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> (Certification Nn 16141 <br /> ' 80201csw <br /> 3050 Fire Circle Sucre 112 9 Scrcron-�entc Coi'roinla 95827 0 (916) 3.72-59417 , FAX (91c) 3c2-�. 1 <br />