Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> s <br /> SECOR Client Project ID ARCO 2133, Stockton, CA <br /> 3050 Fite Circle, Ste 204 Matrix Water <br /> Sacramento, CA 95827 <br /> Attention Rusty Benkosky QC Sample Group 8030992-1011 Reported Apr 7, 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# LCS033198 LCS033198 LCS033198 LCS033198 <br /> Date Prepared 03/31/98 03/31/98 03/31/98 03/31/98 <br /> Date Analyzed 03/31/98 03/31/98 03/31/98 03/31/98 <br /> Instrument I D # GCHP-2 GCHP-2 GCHP-2 GCHP 2 <br /> LCS % <br /> Recovery 90 90 91 90 <br /> Control Limits 70 130% 70-130% 70-130% 70-130% <br /> MS/MSD <br /> Batch # 8031143 8031143 8031143 8031143 <br /> Date Prepared 03/31/98 03/31/98 03/31/98 03/31/98 <br /> Date Analyzed 03/31/98 03/31/98 03/31/98 03/31/98 <br /> Instrument I D # GGHP-2 GCHP 2 GCHP 2 GCHP-2 <br /> Matrix Spike <br /> % Recovery 90 89 93 90 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery 92 91 93 90 <br /> Relative % <br /> Difference 22 22 00 00 <br /> SEQU iA ANALYTIC Please Note <br /> ink The LCS is a control sample of known,interferent free matrix 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 matrix effects,the QC limits for MS/MSCs are advisory only <br /> 7ir C Schneider and are not used to accept or refect batch results <br /> ct Manager/Sacramento Labora ary <br /> 8030992 SES ¢14> <br />