Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 4D- 404 N Wigct Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Stinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> EMCON Client Project ID ARCO 2168, Stockton, CA <br /> 1433 N Market Blvd Matrix Water <br /> Sacramento, CA 95834 <br /> Attention Dave Foley QC Sample Group 8020194-0200 Reported Feb 19, 1998 <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 L Bettencourt L Bettencourt L Bettencourt L Bettencourt <br /> Concentration <br /> Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> LCS Batch# LCS021898 LCS021898 LCS021898 LCS021898 <br /> Date Prepared. 02/18/98 02/18/98 02/18/98 02/18/98 <br /> Date Analyzed 02/18/98 02/18/98 02/18/98 02/18/98 <br /> Instrument I D # GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> LCS % <br /> Recovery 98 98 97 97 <br /> Control Limits 70130% 70-130% 70-130% 70-130% <br /> MS/MSD <br /> Batch#• 8020221 8020221 8020221 8020221 <br /> Date Prepared 02/18/98 02/18/98 02/18/98 02/18/98 <br /> Date Analyzed 02/18/98 02/18/98 02/18/98 02/18/98 <br /> Instrument I D # GCHP 2 GCHP-2 GCHP 2 GCHP-2 <br /> Matrix Spike <br /> % Recovery 100 100 99 100 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 100 100 100 100 <br /> Relative% <br /> Difference 0 0 00 10 00 <br /> SF IA ANALYTICAL Please Note <br /> �� / The LCS is a control sample of known interferent free matrix that is analyzed using the same reagents <br /> �-✓ prepafation 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/MSD s are advisory only <br /> Ronald W Bobel and are not used to accept or reject batch results *Matrix interference <br /> Project Manager/Sacramento Laboratory <br /> 8020194 EMG <6> <br />