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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)79Z-0342 <br /> er=Ayan'- I5`ublin Client P-roje6t--- <br /> lb l)naca[ SS#0187, Stockton <br /> s <br /> {6747 Sierra Court, Suite J Matrix Liquid <br /> Dublin, CA 94568 <br /> ?`Attention Deanna Harding OC Sample Group 9020651-668 <br /> v Reported Feb 16, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Calcium Copper Iron Magnesium Mangasene Sodium Zinc <br /> Method: EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 <br /> Analyst. J Kelly J Kelly J Kelly J Kelly J Kelly J Kelly J Kelly <br /> MS/MSD <br /> Batch#: 9020652 9020652 9020652 9020652 9020652 9020652 9020652 <br /> Date Prepared- 2/8/99 2/8/99 2/8/99 2/8/99 2/8/99 2/8/99 2/8/99 <br /> Date Analyzed. 2/12/99 2/12/99 2/12/99 2/12/99 2/12/99 2/12/99 2/12/99 <br /> Instrument LD # MV-4 MV-4 MV-4 MV-4 MV-4 MV-4 MV-4 <br /> Conc Spiked 1 0 mg/L 1 0 mg/L 1 0 mg/L 10 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> Matrix Spike <br /> % Recovery * 98 90 <br /> Sa 108 <br /> . Matrix Spike <br /> Duplicate % <br /> Recovery * 98 80 10 <br /> 108 <br /> Relative % <br /> Difference: 95 00 4 9 95 91 11 00 <br /> LCS Batch# LCS0208998 LCS020899B LC8020899B LCS020899B LCS020899B LCS0208998 LCS020899B <br /> Date Prepared 2/8/99 2/8/99 2/8/99 2/8/919 2/8/99 2/8/99 2/8/99 <br /> Date Analyzed 2/12/99 2/12/99 2/12/99 2/12/99 2/12/99 2/12/99 2/12/99 <br /> Instrument I D # MV-4 MV-4 MV-4 MV-4 MV-4 MV-4 MV-4 <br /> LCS % <br /> Recovery 97 97 100 100 100 100 100 <br /> ecovery <br /> Control Limits 80-120 80-120 80-120 80-120 80-120 80-120 80-120 <br /> Please Note <br /> The LCS is a control sample of known,Interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL, #1271 preparation,and analytical methods employed for the samples The matrix spike Is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> Interference,the LCS recoveVL Is to be used to validate the batch <br /> Jullanne Fegley Ta ue un eteable due to matrix me erence an or concentrat on n same a <br /> Project Manager <br /> 9020651 GET <28> <br />