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^I 4 <br /> Spargero Analytical Laboratdry Dnnsion <br /> Mobile Laboratory Division <br /> Scientific Dnnsion <br /> With Automation in Mind <br /> EPA Method 8020 <br /> Modified Matrix Spike (MS) & Matrix Spike Duplicate (MSD) <br /> BTEX Analysis Report <br /> Attention Mr Tom Landwehr Date Sampled Apr 30, 1998 <br /> Apex Envirotech, 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 MS/MSD (Batch) LAB ID 9450-001 MS <br /> 9450-001 MSD <br /> Matrix Water Dilution 1 1 <br /> Spike Sample MS MSD MS % MSD % % RPD QC Limits <br /> Analyte Added Cone Result Result Units Recovery Recovery Recovery RPD %Rec <br /> • Benzene 30 21 33 35 ugll 103% 110% 6% 20 65-135 <br /> Toluene 30 05 30 32 ug1l 98% 105% 6% 20 65-135 <br /> Ethylbenzene 30 ND 28 30 ugll 93% 100% 7% 20 65-135 <br /> m,p-Xylenes 60 0 4 53 57 ugll 88% 94% 7% 20 65-135 <br /> o-Xylenes 30 03 28 30 ugll 92% 99% 7% 20 65-135 <br /> Surrogate % Recovery of Tnfiuorotoluene 100% MS 100% MSD <br /> ppb=parts per billion=u9A=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 /> May 8, 1998 <br /> R s,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 /> (Certification No 1614) <br /> 8020MSW As <br /> 3050 Fite Circle Suite 112 • Sacramento, California 95827 • (916) 362-8947 + FAX(916) 362-0947 <br />