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Spargero Analytical Laboratory Di,Msion <br /> Mobile Laboratory Division <br /> Technobgy Inc. Scientific DpAslon <br /> With Automation in Mind <br /> 5020 Modified Laboratory Control Spike (LCS) & <br /> Laboratory Control Spike Duplicate (LCSD) BTEX Analysis Report <br /> Attention Mr Tom Landwehr Date Sampled Apr 6, 1994 <br /> Apex Envirotech, Inc Date Received Apr 7, 1994 <br /> 7844 Madison Avenue Suite 106 <br /> Fair Oaks, CA 95628 <br /> Project ID ERA02 006 Project Name Moore Petroleum Exxon <br /> Client ID LCS/LCSD LAB ID ST94-04-012 LCS <br /> ST94-04-012 LCSD <br /> Matrix Water Dilution <br /> Conc Sample LCS LCSD LCS % LCSD % % RPD <br /> Name Spike Added Result Result Result Units Recovery Recovery Recovery <br /> Benzene 30 ppb ND 29 30 ug/L 97% 100% 3% <br /> Toluene 30 ppb ND 29 30 ug/L 97% 100% 3% <br /> Ethylbenzene 30 ppb ND 30 30 ug/L 100% 100% 0% <br /> Xylenes 30 ppb ND 29 30 ug/L 97% 100% 3% <br /> Surrogate % Recovery of Trifluorotoluene = 97% LCS 107% LCSD <br /> Ppb=parts per odlion=ug1L=micrograms per Liter <br /> ppm=parts per and hon=uglmL=micrograms per milliliter <br /> NO=Not Detected Compound(s)may be present at concentrations below the detection limit <br /> Apr 18, 1994 <br /> R L James Principal Chemist Date Reported <br /> SPARGER TECHNOLOGY ANALYTICAL LABORATORY INC IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> IDEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS'NASTE TESTING LABORATORY <br /> (Certification No 76141 <br /> 3050 Fite Circle Suite 112 • Sacramento Col,fornio 95827 • (916) 362-8947 • FAX (916) 362-0947 <br />