Laserfiche WebLink
j SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue Suite LM - Concord, California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> *ap—realian Engineering, Inc Y. Client Project ID Unocal, 5806 Pacific Ave, Stockton <br /> 2401 Stanwell Drive, Suite 400 <br /> Concord, CA 94520 <br /> Attention Mardo Kaprealian, P E QC Sample Group 2100027-30 Reported Oct 12, 1992 <br /> QUALITY CONTROL DATA REPORT <br /> SURROGATE <br /> Method EPA 8010 EPA 8010 EPA 8010 EPA 8010 EPA 8010 <br /> Analyst K Ndl K Nill K Nidi K Noll K Ndl <br /> Reporting Units pg/L u9/L N9/L u9/L p9/L <br /> Date Analyzed Oct 2, 1992 Oct 2, 1992 Oct 2, 1992 Oct 2, 1992 Oct 2, 1992 <br /> Sample# 210-0027 210-0028 210-0029 210-0030 Matrix Blank <br /> Surrogate#1 <br /> % Recovery. 110 97 101 107 130 <br /> Surrogate#2 <br /> % Recovery. 126 100 100 109 122 <br /> I <br /> IDEQUOIA ANALYTICAL %Recovery Conc of M S -Cone of Sample x 100 <br /> Spike Conc Added <br /> Relative%Difference Conc of M S -Cone of M S D x 100 <br />,�.�/Scott A Chleffo (Cont of M S + Conc of M S D)/2 <br /> j Project Manager 2100027 KEi <8> <br />