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Spargero Analytical Laboratory msion <br /> Yt N D <br /> • <br /> Technok4 !nc Mobile Laboratory Division <br /> With Automatron In Mrnd y Scientific Division <br /> EPA Method 8020 <br /> Modified Laboratory Control Spike (LCS) & <br /> Laboratory Control Spike Duplicate (LCSD) BTEX Analysis Report <br /> Attention Mr Tom Landwehr Date Sampled Apr 30, 1998 <br /> Apex Env(rotech, Inc Date Received May 1, 1998 <br /> 7844 Madison Ave Ste 106 Date Analyzed May 4, 1998 <br /> Fair Oaks, CA 95628 Invoice# 9451 MAY98 <br /> Project ID ERA02-009 Project Name Manteca Moore Petro <br /> Client ID LCSILCSD LAB ID 9451-LCS <br /> 9451-LCSD <br /> Matrix Water Dilution 1 1 <br /> I <br /> Spike Sample LCS LCSD LCS % LCSD % % RPD QC Limits <br /> wAnalyte Added Conic Result Result Units Recovery Recovery Recovery RPD %Rec <br /> Benzene 30 ND 31 33 ugll 103% 110% 6% 20 65-135 <br /> Toluene 30 ND 30 32 ugll 100% 107% 6% 20 65-135 <br /> Ethylbenzene 30 ND 29 31 ug/I 97% 103% 7% 20 65-135 <br /> m,p-Xylenes 60 ND 56 59 ugll 93% 98% 5% 20 65-135 <br /> o-Xylenes 30 ND 30 32 ug/I 100% 107% 6% 20 65-135 <br /> Surrogate % Recovery of Tnfluorotoluene 96% LCS 98% LCSD <br /> ppb=parts per billion=ugl=micrograms per liter <br /> ppm-parts per million=ug/ml=micrograms per milliliter <br /> NO Not Detected Com may he present at concentrations below the detection luny <br /> May 8, 1998 <br /> R mes, Principal Chemist 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 /> (Cerbficabon No 1514) <br /> 8020LCSW As <br /> 3050 Fite Circle Suite 112 e Sacramento, California 95827 • (996) 362-8947 9 FAX(996) 362-0947 <br />