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' • ` Sequoia 0680 Chesapeake Drive Redwood City,CA 94063415) 364-9600 FAX(415) 364-9233 <br /> 404 N.Wiget lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988.9673 <br /> frrll7 Analytical 819 Striker Avenue,Suite 8 Sacamento,CA 95834 (916) 921.9600 FAX(916)921-0100 <br /> Kleinfelder Client Project ID`. 20-3978-01.W35 /Spreckels <br /> 2825 East Myrtle St. Matrix: Soil/Water <br /> Stockton, CA 95205 <br /> Attention: Tony Martin QC Sample Group 7090549-0559 Reported: Sep 18, 1997.., <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes MTBE MTBE <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8260 EPA 8260 <br /> Analyst: S. Phillips S.Phillips S.Phillips S.Phillips L.Zhu L Zhu <br /> Concentration <br /> Spiked: 10 ug/L 10 ug/L 10 ug/L 30 ug/L 2,500 Ng/kg 50Yg/L <br /> LCS Batch#: LCS091197 LCS091197 LCS091197 LCS091197 LCS091197 LCS091597 <br /> Date Prepared: 09/11/97 09/11/97 09/11/97 09/11/97 09/11/97 09/15/97 <br /> Date Analyzed: 09/11/97 09/11/97 09/11/97 09/11/97 09/12/97 09/15/97 <br /> Instrument I.D.#: GCHP-7 GCHP-7 GCHP-7 GCHP-7 F3 H6 <br /> LCS % <br /> Recovery: 107 100 98 97 96 8o <br /> Control Limits: 70-130 70-130 70.130 70-130 70-130 70-130 <br /> T< <br /> <n n„""T'w�4"nxJ::" t..a:r..2:ti'^eao)"xa'bacy�:" '; <br /> a-..>,,,; <br /> MS/MSD <br /> Batch#: 7090444 7090444 7090444 7090444 9709050812 970863008 <br /> Date Prepared: 09/11/97 09/11/97 09/11/97 09/11/97 09/11/97 09/11/97 <br /> Date Analyzed: 09/11/97 09/11/97 09/11/97 09/11/97 09/12/97 09/11/97 <br /> Instrument I.D.#: GCHP-7 GCHP-7 GCHP-7 GCHP-7 F3 H6 <br /> Matrix Spike <br /> %Recovery: 106 99 99 99 84 92 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 108 96 94 92 96 94 <br /> Relative% <br /> Difference: 1.9 3.1 5.2 7.3 12 1.9 <br /> yqEQUIA ANALYTICAL ENote:control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> /,L and analytical methods employed for the samples. The LCS%recovery data is used for <br /> f sample batch results. Due to matrix effects,the OC limits for MS/MSG's are advisory only <br /> Sch elder used to accept or reject batch results. <br /> Manager/Sacramento Labo <br /> 7090550.KLF <16> <br /> rtx�' <br />