Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood Gty, CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Stnker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Roy F Weston Client Project Ib SJCHSA <br /> 2300 Clayton Rd , Suite 1580 Matrix Water <br /> Concord, CA 94520-2148 <br /> Attention David Marks QC Sample Group 5071388-1396 Reported Aug 10, 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 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br />' LCS Batch#. LCS080795 LCS080795 LCS080795 LCS080795 <br /> Date Prepared 8/7/95 8/7/95 8/7/95 8/7/95 <br />' Date Analyzed 8/7/95 8/7/95 8/7/95 8/7/95 <br /> Instrument I D # GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br />' LCS <br /> Recovery ss 98 ss 99 <br /> Control Limits 75-125 75-125 75-125 75-125 <br /> MS/MSD <br /> Batch # 5071368 5071368 5071368 5071368 <br /> Date Prepared 8/7/95 8/7/95 8/7/95 8/7/95 <br />' Date Analyzed* 8/7/95 8/7/95 8/7/95 8/7/95 <br /> Instrument I D # GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br />' Matrix Spike <br /> % Recovery 102 102 104 102 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 99 97 101 100 <br /> Relative % <br /> Difference 3G 50 29 20 <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 /> /1 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 OC limits for MS/MSDs are advisory only <br /> Linda C Schneider and are not used to accept or refect batch results <br /> Project Manager <br /> 5071388 ROY <3> <br />