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Spargero <br /> Analytical Laboratory Division <br /> Tehchbile Laboratory Division <br /> inc.Ir�c. Scientific Division <br /> Environmental Loborotones <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 Oct 7, 2002 <br /> Shaw E & I Date Received Oct 8, 2002 <br /> 1326 N Market Blvd , Date Analyzed Oct 8, 2002 <br /> Sacramento, CA 95834 Invoice# 151040CT2002 <br /> Project ID 8800391A Project Name Don Rogers <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 30 31 100% 103% 3% <br /> Toluene 30 ND 30 31 100% 103% 3% <br />' Ethylbenzene 30 ND 30 32 100% 107% 6% <br /> total-Xylenes 90 ND 94 97 104% 108% 3% <br /> mglm =mingrams per cubic meter <br /> ND=No1 Detected Compound(s)may be present at concentrations below the detection lima <br /> Oct 8, 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 ASA HAZARDOUS WASTE TESTING LABORATORY <br /> (Certification No 1614) <br /> 3050 Fite Circle Suite 112 • Sacramento California 95827 • (916) 362-8947 • FAX (916) 362-0947 <br />