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4 <br /> �v w <br /> Spargero Analytical Laboratory Division <br /> Mobile Laboratory Division <br /> TechnologyInc. Scientific Division <br /> With Automation in Mind <br /> EPA Method 8020 <br /> Modified Laboratory Control Spike (LCS) & <br /> Laboratory Control Spike Duplicate (LCSD) BTEX Analysis Report <br /> Attention: Mr. Jeff Rothgery Date Sampled: Jan 29, 1997 <br /> Apex Envirotech, Inc. Date Received: Jan 29, 1997 <br /> 7844 Madison Ave., Ste. 106 Date Analyzed: Jan 31, 1997 <br /> Fair Oaks, CA 95628 Invoice#: 7388 <br /> Project ID: ERA02.004 Project Name: Moore Petroleum. <br /> Client ID: LCS/LCSD LAB ID: 7388-LCS <br /> 7388-LCSD <br /> Matrix: Water Dilution: <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 30 27 ug/I 100% 90% 11% 20 65-135 <br /> Toluene 30 ND 27 25 ug/I 90% 83% 8% 20 65-135 <br /> Ethylbenzene 30 ND 25 25 ug/I 83% 83% 0% 20 65-135 <br /> m,p-Xylenes 60 ND 52 50 ug/I 87% 83% 4% 20 65-135 <br /> Surrogate % Recovery of Trifluorotoluene= 100% LCS 95% LCSD <br /> ppb=parts per billion=ugl1=micrograms per liter <br /> ppm=parts per million=ug/ml=micrograms per milliliter <br /> ND=Not Detected. Compound(s)may be present at concentrations below the detection limit. <br /> Feb 12, 1997 <br /> jR,L s, Prin ' Jet 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 /> (Certification No.1614) <br /> 8020LCS.XLS <br /> 3050 Fite Circle, Suite 112 • Sacramento, California 95827 9 (916) 362-8947 9 FAX(916) 362-0947 <br />