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1 , <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 • FAX(415) 364-9233 <br /> �^`ac f*�"w,,.'r�i'o`cw u� ,J"3 1` .u, F.Y x Y,�:..C':fi5 ry A vtati�.,. �ba^ c �y'�s.. �o �...,,.r... ,,. 62i"ra'C�/�}' tm•� ]�Ya.:'+.2�i"�''' r.. <br /> Yhs 4n�xf.�ib'0(�'YO[v},W:^.�i✓3,JY%�b <br /> Waterwork Client Project ID W0388, Reeves ExxonV x <br /> 1710 Main Street ti <br /> Escalon, CA 95320 <br /> *Attention Lois Frantz QC Sample Group 112-3911 Reported: Jan' G 1992� <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> , Benzene Toluene benzene Xylenes <br /> ' Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst M Nipp M Nipp M Nipp M Nipp <br /> Reporting Units mg/kg mg/kg mg/kg mg/kg <br /> Date Analyzed Dec 27, 1991 Dec 27, 1991 Dec 27, 1991 Dec 27, 1991 <br /> QC Sample # GBLK122791 GBLK122791 GBLK122791 GBLK122791 <br /> Sample Conc.: N D N D N D N D <br /> Spike Corte. <br /> Added- 020 020 020 060 <br /> Conc Matrix <br /> ' Spike: 020 018 018 053 J <br /> ' Matrix Spike <br /> %Recovery. 100 90 90 88 <br /> Cone. Matrix <br /> Spike Dup.: 020 018 018 052 <br /> Matrix Spike <br /> ' Duplicate <br /> %Recovery 100 90 90 87_ <br /> ' Relative <br /> % Difference- 00 00 00 19 <br /> SEOUOIA ANALYTICAL %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> Reiat,ve%Werence Conc of M S -Conc of M S D x 100 <br /> ' JoPjecLt <br /> " L (Conc of M S t Conc of M S D) 2 <br /> Manager 1123903 WAT <8> <br />