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Spargero Analytical Laboratory Division <br /> Mobile Laboratory Dnnsion <br /> *T&hno1ogylnc Scientific Division <br /> With Automaton in Mina` <br /> EPA Method 8020 <br /> Modified Laboratory Control Spike (LCS) & <br /> Laboratory Control Spike Duplicate (LCSD) BTEX Analysis Report <br /> Attention Mr Jeffrey Rothgery Date Sampled May 29, 1997 <br /> Apex Envlrotech, Inc Date Received May 30, 1997 <br /> 7844 Madison Ave , Ste 106 Date Analyzed Jun 4, 1997 <br /> Fair Oaks, CA 95628 Invoice# 7855 <br /> Project ID ERA02 009 Project Name Moore Petroleum <br /> Client ID LCS/LCSD LAB ID 7855-LCS <br /> 7855-LCSD <br /> Matrix Water Dilution 1 1 <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 34 36 ug1l 113% 120% 6% 20 65-135 <br /> Toluene 30 ND 29 32 ugll 97% 107% 10% 20 65-135 <br /> Ethylbenzene 30 ND 28 30 ug/l 93% 100% 7% 20 65-135 <br /> m,p-Xylenes 60 ND 55 59 ugll 92% 98% 7% 20 65-135 <br /> o-Xylenes 30 ND 27 29 ugli 90% 97% 7% 20 65-135 <br /> Surrogate% Recovery of Trifluorotoluene= 99% LCS 101% LCSD <br /> ppb=parts per billion=ugfl=micrograms per liter <br /> ppm=parts per million=ug/ml=micrograms per milliliter <br /> NO=Not Detected Compound(s)may be present at concentrations below the detection lima <br /> Jun 10, 1997 <br /> R L games,Principal Chemist Date Reported <br /> SPARGER TECHNOLOGY ANALY nCAL LABORATORY INC IS CERTIFIED BY THE STATE;OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A H)—ZARDOUS WASTE TESTING LABORATORY <br /> (Certdtcadon No 1614) <br /> 8020LCSW2 <br /> 3050 Fite Circle Suite 112 - Sacramento California 95827 - (996) 362-8947 a FAX(996) 362-0947 <br />