Laserfiche WebLink
(D— Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> t900 Hates Avenue,Suite L Concord CA 94520 (510) 686 9600 FAX(510) 686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br />*�� ,� ,,.,, . n :.X <br /> r�West, Inc Client Prole&10 Shell, 111 El y©orado, Stockton, CA <br /> 1050 Melody Lane, Ste 160 Matrix Air <br /> Roseville, CA 95678 <br /> Attention Sudhakar Talanki QC Sample Goup 4120988-989 Reported Jan 4, 1995 <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 C Lee C Lee C Lee C Lee <br /> Concentration <br /> Spiked 2 0 mg/m3 2 0 mg/m3 2 0 mg/m3 6 0 mg/m3 <br /> LCS Batch# LCS123094 LC8123094 LCS123094 LCS123094 <br /> Date Prepared 12/30/94 12/30/94 12/30/94 12/30/94 <br /> Date Analyzed" 12/30/94 12/30/94 12/30/94 12/30/94 <br /> Instrument I D # GCHP 2 GCHP-2 GCHP-2 GCHP-2 <br /> LCS <br /> Recovery* 79 80 80 81 <br /> Control Limits. 75-125 75-125 75-125 75-125 <br /> MS/MSD <br /> Batch#' BLK123094 BLK123094 BLK123094 BLK123094 <br /> Date Prepared 12/30/94 12/30/94 12/30/94 12/30/94 <br /> Date Analyzed* 12/30/94 12/30/94 12/30/94 12/30/94 <br /> instrument I D ,#E GCHP-2 GCHP-2 GCHP-2 GCHP 2 <br /> Matrix Spike <br /> % Recovery- 79 80 80 81 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery. 79 Bo 80 81 <br /> Relative % <br /> Difference: 00 00 00 00 <br /> SEQUOIA ANALYTICAL Please Note <br /> The LCS is a control sample of known,interferent free matnx that is 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 matnx effects,the QC limits for MS/MSG's are advisory only <br /> Linda C Schneider and are not used to accept or reject batch results <br /> Project Manager <br /> 4120988 FUG 42> <br />