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Page 2 of 4 <br /> Spargero <br /> Analytical Laboratory Division <br /> Techroboyinc. Mobile Laboratory Division <br /> Scientific Division <br /> Environmental Laboratories <br /> EPA Method 8020 <br /> Modified Laboratory Control Spike (LCS) & <br /> Laboratory Control Spike Duplicate (LCSD) BTEX Analysis Report <br /> Attention Kathleen Waldo Date Sampled Jun 12, 2002 <br /> Shaw E&I Date Received Jun 14, 2002 <br /> 1326 N Market Blvd Date Analyzed Jun 14, 2002 <br /> Sacramento, CA 95834 Invoice# 14836JUN02 <br /> Project ID 880-040 1A Project Name Park)nsons Arco <br /> Client ID LCS/LCSD LAB ID QC - BATCH <br /> Matrix Air Volume 5 ml <br /> units = mg/m3 <br /> Spike Sample LCS LCSD LCS % LCSD % % RPD <br /> Name Added Conc Result Result Recovery Recovery Recovery <br /> Benzene 30 ND 27 25 90% 83% 8% <br /> Toluene 30 ND 27 25 90% 83% 8% <br /> Ethylbenzene 30 ND 29 26 97% 87% 11% <br /> total-Xylenes 90 ND 83 77 92% 86% 8% <br /> m9lm3 W milligrams per cubic meter <br /> NO=Not Detected Compound(s)may be present at concentrations below the detection limit , <br /> 1 <br /> 1 <br /> Jun 14, 2002 <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 HAZAROOUS WASTE TESTING LABORATORY <br /> (Certs cal on No 1614) <br /> 3050 Fite Circle, Suite 112 • Sacramento, Cahtomia 95827 • (916) 362-8947 • FAX (916) 362-0947 <br />