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is 0 <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988.9673 <br /> �Ill� Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)92 1-0 100 <br /> .. <br /> Kleinfelder Client Project ID: 20-4054-01 <br /> 2825 East Myrtle St. Matrix. Soil/Water <br /> Stockton, CA 95205 <br /> Attention: Tony Martin QC Sample Grou 8020578-0580 Reported: Mar 12, 1998:::: <br /> IQUALITY CONTROL DATA REPORT <br /> ANALYTE 1,4-Dichloro- N-Nitroso-Di- 1,2,4-Trichloro- 4-Chloro-3- <br /> Phenol 2-Chlorophenol benzene N-propylamine benzene Meth I hen I <br /> Method: EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Analyst: E. Manuel E.Manuel E.Manuel E.Manuel E.Manuel E.Manuel <br /> Concentration <br /> Spiked: 3,300Ng/kg 3,300 Ng/kg 3,300 Ng/kg 3,300 Ng/kg 3,300Ng/kg 3,300 Ng/kg <br /> LCS Batch#: BLK022598 BLK022598 BLK022598 BLK022598 BLK022598 BLK022598 <br /> BS/BSD BS/BSD BS/BSD BS/BSD BS/BSD BS/BSD <br /> Date Prepared: 02/25/98 02/25/98 02/25/98 02/25/98 02/25/98 02/25/98 <br /> tDate Analyzed: 02/25/98 02/25/98 02/25/98 02/25/98 02/25/98 02/25/98 <br /> Instrument I.D.#: H5 H5 H5 H5 H5 H5 <br /> LCS % <br /> Recovery: 70 64 62 55 79 70 <br /> Control Limits: 26-90% 25-102% 28-104% 41-126% 38-107% 26-103% <br /> ........................................................................................................................................................................................................................................................................................... <br /> MS/MSD BLK022598 BLK022598 BLK022598 BLK022598 BLK022598 BLK022598 <br /> Batch#: BS/BSD BS/BSD BS/BSD BS/BSD BS/BSD BS/BSD <br /> Date Prepared: 02/25/98 02/25/98 02/25/98 02/25/98 02/25/98 02/25/98 <br /> Date Analyzed: 02/25/98 02/25/98 02/25/98 02/25/98 02/25/98 02/25/98 <br /> Instrument I.D.#: H5 H5 H5 H5 H5 H5 <br /> Matrix Spike <br /> % Recovery: 70 64 62 55 79 70 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 67 63 60 51 72 65 <br /> Relative% <br /> Difference: 4.0 1.4 2.0 6.3 9.2 7.6 <br /> Please Note: <br /> SEQUOIA ANALYTICA The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> 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 /> and are not used to accept or reject batch results. <br /> lnda C. Schneider <br /> Project Manager/Sacramento Laboratory Page 1 of 2 <br /> 8020578.KLF <22> <br />