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iY�H -ir • <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive - Redwood City, CA 94063 <br /> JqJVAt <br /> Aff (415) 364-9600 - FAX(415) 364-9233 <br /> RESNA " ~' ` rrblient Project ID W0169 00, BJJ Tracy x <br /> 1710 Main Street Matrix Water <br /> Escalon, CA 95320 <br /> ,Attention lois Frantz QC Sample Group 3E25301 -02 Reported May 16, 1993 ` <br /> w- <br /> I <br /> I <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Diesel Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method: EPA 5015 EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: C Lee J Fontecha J Fontecha J Fontecha J Fontecha <br /> Conc. Spiked: 300 20 20 20 60 <br /> Units- ug/L fig/L us/L ug/L lig/L <br /> LCS Batch#: DBLK051093 LCW51193 LCS051193 LCS051193 LCS051193 <br /> Date Prepared: 5/10/93 5/11/93 5/11/93 5/11/93 5/11/93 <br /> Date Analyzed: 5/11/93 5/11/93 5/11/93 5/11/93 5/11/93 <br /> Instrument LD #: GCHP-5 GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> iLCS% <br /> Recovery 53 104 103 102 117 <br /> Control Limrts: 50-150 30-170 30-170 30-170 30-170 <br /> r v + }� ,5+, rxv . +x.`{+ r+1 s ` L nv. v .. . { v r n ♦ . ` . . ` ` + J + . r + ~ S +nl r{i'Il\`rte Y{v{ ru <br /> Gi ♦ . r.+n+ + `v . r + v v+ xm v+-}+x +x+ + i + + ++ + + +.. M1 . ..r v .v w{rY6v14 + r{ S~ tv'.Stv'h Sr JiuJr r+i0.F.Y <br /> MS/MSD <br /> Batch#. 3DE0902 3E43101 3E43101 3E43101 3E43101 <br /> Date Prepared 5/10/93 5/11/93 5/11/93 5/11/93 5/11/93 <br /> Date Analyzed 5/11/93 5/11/93 5/11/93 5/11/93 5/11/93 <br /> Instrument I.D.#: GCHP-5 GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Matrix Spike <br /> % Recovery: 76 110 105 105 120 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: a5 110 110 110 125 <br /> Relative% <br /> Difference: 11 00 47 47 41 <br />&EQUOIA ANALYTICAL Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> TEgtW preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> validation of sample batch results Due to matrix effects,the QC limits for MS/MSDs are advisory only <br /> Vickie and are not used to accept or reject batch results <br /> Project Manager 3E25301 WAT e3> <br />