Laserfiche WebLink
Sequoia 680 Chesapeake Dnve Redwood Cay CA 94063 {415) 364 9600 FAX(415) 364 9233 <br /> 1 404 N Weget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(51o)98s 9673 <br /> Analytical 819 Sinker Avenue Suitt 8 Sacramento CA 95834 (916) 921 96W FAX(916)921 0100 <br /> Brown & Caldwell Client Project ID Arco 02133, Stockton, CA <br /> 9616 Micron Ave Suite 600 Matrix Water <br /> Sacramento, CA 95827 <br /> Attention Steve Misner QC Sample Group 7030653-72 Reported Apr 1, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl 7 <br /> - <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 10 mg/L 10 mg/L 10 mg/L 30 mg/L <br /> LCS Batch# LCS032497 LCS032497 LCS032497 LCS032497 <br /> Date Prepared 03/24/97 03/24/97 03/24/97 03/24/97 <br /> Date Analyzed 03/24/97 03/24/97 03/24/97 03/24/97 <br /> Instrument I D # GCHP 7 GCHP 7 GCHP 7 GCHP-7 <br /> • LCS <br /> Recovery 88 90 92 92 <br /> Control Limits 60 140 60-140 60-140 60-140 <br /> MS/MSD <br /> Batch # 7030659 7030659 7030659 7030659 <br /> Date Prepared 03/24/97 03/24/97 03/24/97 03/24/97 <br /> Date Analyzed 03/24/97 03/24/97 03/24/97 03/24/97 <br /> Instrument 1 D # GCHP 7 GCHP 7 GCHP 7 GCHP 7 <br /> Matrix Spike <br /> % Recovery 84 as 89 90 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery as 92 92 94 <br /> Relative % <br /> Diff erence 46 44 33 43 <br /> SEQUOIA ANALYTICAL Please Note <br /> The LCS is a control sample of known interferent free matrix that is analyzed using the same reagents <br /> *MAI M ;:�?�O 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 limns for MS/MSDs are advisory only <br /> Edana M Fruciano and are not used to accept or reject batch results <br /> Project Manager/Sacramento Laboratory 7030653 SRS <7> <br /> A <br />