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Sequoia 680 Chesapeake Dnvc Redwood City CA 94063 (415) 364 9600 FAX(415)364 9133 <br /> Analytical 1900 Bales Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> RESNA Industries Client Project 1D 38009 10/Pere Station #2 <br /> 3164 Gold Camp Dr, Suite 200 Matra Water <br /> Rancho Cordova, CA 95670 <br /> Attention Claudio Avila OC Sample Group 4061241-1245 Reported Jul 14, 1994 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Etllyl- <br /> Benzene Toluene Benzene Xylenes Diesel <br /> EPA <br /> Method. FPA 8020 EPA 8020 EPA 8020 EPA 8020 8015 Mod <br /> Analyst: Chlaravallote Chlaravallotl Ghiaravallotl Chiaravallotl Chiaravalloti <br /> Concentration <br /> Spiked: 10 ug/L 10 ug/L 10 ug/L 30 ug/L 300 ug/L <br /> LCS Batch#' LCS070594 LCS070594 LCS070594 LCS070594 BLK070194 <br /> Date Prepared 7/5/94 7/5/94 7/5/94 7/5/94 7/1/94 <br /> Date Analyzed: 7/5/94 7/5/94 7/5/94 7/5/94 7/11/94 <br /> Instrument I D # HP-2 HP-2 HP-2 HP-2 HP38 <br /> LCS % <br /> . Recovery: 105 102 103 103 83 <br /> Control Llmds: 75-125 75-125 75-125 75-125 60-130 <br /> r r r » + +4 + ♦v v + + +Jn.vt v ti y}sx .+Y+v+'rV At v�h"r ;4'y`'moi <br /> v r r ni.,.r ryn•wv ,.w + .+?}v w }nr4..4 r r x n S ri + v+.t kr } •++- + l+++3�ut 4vin•-+'+'x.4 <br /> MS/MSD <br /> Batch#. 4061243 4061243 4061243 4061243 BLK070194 <br /> Date Prepared' 7/5/94 7/5/94 7/5/94 7/5/94 7/1/94 <br /> Date Analyzed: 7/5/94 7/5/94 7/5/94 7/5/94 7/11/94 <br /> Instrument I.D #. HP-2 HP-2 HP-2 HP-2 HP38 <br /> Matrix Spike <br /> % Recovery: 100 100 100 100 83 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery. 110 110 100 103 83 <br /> Relative% <br /> Difference: 9S 9 5 00 30 00 <br /> SEQUOIA ANALYTICAL Please Note <br /> i The LCS 1s a control sample of known,interferent free matrix that 1s analyzed using the same reagents, <br /> 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/HBO's are advisory only <br /> Linda C Schneider and are not used to accept or reject batch results <br /> Project Manager <br /> 4061241 RES <3n <br />