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Sequoia 0 Chesapeake Drive Redwood City,CA 940630415) 364-9600 FAX(415) 364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 119 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> ... ........ <br /> ................ <br /> ............... <br /> SKleinfelder Client Protect Ib.' 20-3978-01 8prec klesi <br /> 2825 East Myrtle St. Matrix: Soil <br /> Stockton, CA 95205 <br /> Attention: Tony Martin QC Sample Group: 7010355-62 Reported: Jan 27, 199711, <br /> 0 ..... .... <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Heptachlor Aldrin Dieldrin 2.4-D 2,4,5-TP 2,4,5-T <br /> Method: EPA 8080 EPA 8080 EPA 8080 EPA 8150 EPA 8150 EPA 8150 <br /> Analyst: L.Bettencourt L.Bettencourt L. Bettencourt D.Nelson D.Nelson D.Nelson <br /> Concentration <br /> Spiked: 2.5 ug/kg 2.5 ug/kg 5.0 ug/kg 170 ug/kg 170 ug/kg 170 ug/kg <br /> LCS Batch#: LGS01 1797 LCS011797 LCS011797 LCS011797 LCS011797 LCS011797 <br /> Date Prepared: 01/17/97 01/17/97 01/17/97 01/17/97 01/17/97 01/17/97 <br /> Date Analyzed: 01/21/97 01/21/97 01/21/97 01/18/97 01/18/97 01/18/97 <br /> Instrument I.D.#: GCHP4B GCHP-4B GCHP-4B PE-05 PE-05 PE-05 <br /> LCS % <br /> Recovery: IM 76 68 94 76 94 <br /> Control Limits: 40-140 40-140 40-140 30-140 30-140 30-140 <br /> K., <br /> lv <br /> MS/MSD <br /> Batch#: 7010437 7010437 7010437 9701879-05 9701879-05 9701879-05 <br /> Date Prepared: 01/17/97 01/17/97 01/17/97 01/17/97 01/17/97 01/17/97 <br /> Date Analyzed: 01/21/97 01/21/97 01/21/97 01/18/97 01/18/97 01/18/97 <br /> Instrument I.D.#: GCHP-4B GCHP-4B GCHP-4B PE-05 PE-05 PE-05 <br /> Matrix Spike <br /> %Recovery: 120 100 74 129 118 147 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 92 76 56 124 106 124 <br /> Relative% <br /> Difference: 26 27 28 4.7 10 17 <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 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/MSD's are advisory only <br /> epw� M- and are not used to accept or reject batch results. <br /> Edana M. Beischner <br /> Project Manager/Sacramento Laboratory 7010362.KLF <5> <br />