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Page 2 of 4 <br /> Spargero Analytical Laboratory Division <br /> Techridbayinc. Mobile Laboratory Division <br /> Scientific Division <br /> Environmental Laboratones <br /> EPA Method 8020 <br /> Modified Laboratory Control Spike (LCS) & <br /> Laboratory Control Spike Duplicate (LCSD) BTEX Analysis Report <br /> Attention David Herzog Date Sampled Nov 4, 2002 <br /> Shaw E & l Date Received Nov 5, 2002 <br /> 1326 N Market Blvd Date Analyzed Nov 6, 2002 <br /> Sacramento, CA 95834 Invoice# 15175NOV2002 <br /> Project ID 880039 1A Project Name Don Rogers <br /> Client iD LCS/LCSD LAB ID QC - BATCH <br /> Matrix Air Volume 5 ml <br /> units = mg/m" <br /> Spike Sample LCS LCSD LCS % LCSD % % RPD <br /> Name Added Col Result Result Recovery_ Recovery Recovery <br /> Benzene 30 ND 32 30 107% 100% 6% <br /> Toluene 30 ND 27 24 90% 80% 12% <br /> IEthylbenzene 30 ND 30 28 100% 93% 7% <br /> total-Xylenes 90 ND 92 84 102% 93% 9% <br /> mglm'=milligrams per cubic meter <br /> ND=Not Detected Cempound(r)may he present at concentrations below the detection limit <br /> Nov 6, 2002 <br />' R L .fames 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 /> (Certificauon No 1614) <br /> 3050 Fite Circle, Suite 112 • Sacramento, California 95827 • (916) 362-8947 • FAX (916) 362-0947 <br />