Laserfiche WebLink
SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> iff (510) 686-9600 FAX (510) 686-9689 <br /> . Kaprealian Engineering, Inc Client Project ID Unocal, 2835 Navy Drive, Stockton <br /> P O Box 996 <br /> Benicia, CA 94510 <br /> Attention Mardo Kaprealian, P E QC Sample Group 2040920-922 Reported Apr 24, 1992 <br /> QUALITY CONTROL DATA REPORT <br /> SURROGATE <br /> Method EPA8015 <br /> Analyst A T/S L <br /> Reporting Units mg/Kg <br /> Date Analyzed Apr 23, 1992 <br /> Sample# Blank <br /> Surrogate <br /> % Recovery 115 <br /> I <br /> SEQUOIA ANALYTICAL %Recovery Cone of M S -Cone of Sample x 100 <br /> Spike Cone Added <br /> C7 Relative Difference Cone of M S Conc of M S D x 100 <br /> Scott A Chieffo (Cone of M s + Cone of MST)-/2 <br /> Project Manager 2040920 is I <5> <br />