Laserfiche WebLink
Metadata
Document management portal powered by Laserfiche WebLink 9 © 1998-2015 Laserfiche. All rights reserved.
SEQUOIA ANALYTICAL <br /> 1900 Bales Avenue • Suite LM • Concord, California 94520 <br /> (415) 686-9600 • FAX (415) 686-9689 <br /> Kapreahan Engineering, Inc Client Project ID Unocal,7303 Pacific Ave,Stockton n <br /> P O Box 996 <br /> Benicia, CA 94510 <br /> Attention Mardo Kapreallan, P E QC Sample Group 1030899-902 Reported Apr 10, 1991 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl <br /> Benzene Toluene Benzene Xylenes <br /> Method EPAS015/8020 EPAS015/8020 EPAW15/8020 EPAS015/8020 <br /> Analyst E Hamilton E Hamilton E Hamilton E Hamilton <br /> Reporting Unds mg/L mg/L mg/L mg/L <br /> Date Analyzed Apr a, 1991 Apr 8, 1991 Apr 8, 1991 Apr 8, 1991 <br /> OC Sample# 103-0487 103-M7 103-W7 108-0487 <br /> Sample Conc • N D N D N D N D <br /> • Spike Conc <br /> Added 20 20 20 60 <br /> Conc Matrix <br /> Spike 19 17 16 49 <br /> Matrix Spike <br /> % Recovery. 95 85 80 82 <br /> Conc Matrix <br /> Spike Dup.- 19 17 16 49 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery: 95 85 80 82 <br /> Relative <br /> %Difference 0 0 0 0 <br /> ISEQUOIA ANALYTICAL %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> J� Relative%Difference Conc of M S -Conc of MSD x 100 <br /> Belinda C Vega (Conc of M S + Conc of M S D) 2 <br /> Laboratory Director 1030899 KEI <4> <br />