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Sequoia <br /> UOiCi 680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> -V' Jl q 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> %aw Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)92 1-0100 <br /> ................... <br /> Kleinfelder Client Project ID. 20-4054-01 EO1 <br /> 2825 East Myrtle St. Matrix: Soil/Water <br /> Stockton, CA 95205 <br /> Attention: Ton Martin QC Sample Group 8030426-0428, 0430 Reported: Mar 26, 1998. <br /> _. _._ <br /> QUALITY 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: B.Pitamah B.Pitamah B.Pitamah B.Pitamah B.Pitamah B. Pitamah <br /> Concentration <br /> Spiked: 3,300µg/kg 3,300 Ng/kg 3,300µg/kg 3,300 Ng/kg 3,300 Ng/kg 3,300 Ng/kg <br /> ( LCS Batch#: SB0316BS SBO316BS SB0316BS SB0316BS SB0316BS SB0316BS <br /> Date Prepared: 03/16/98 03/16/98 03/16/98 03/16/98 03/16/98 03/16/98 <br /> Date Analyzed: 03/17/98 03/17/98 03/17/98 03/17/98 03/17/98 03/17/98 <br /> Instrument I.D.#: H5 H5 H5 H5 H5 H5 <br /> LCS % <br /> Recovery: 75 79 72 76 83 80 <br /> Control Limits: 26-90% 25-102% 28-104% 41-126% 38-107% 26-103% <br /> sx- <br /> XXX XX <br /> MS/MSD <br /> Batch#: 9803844-01 9803844-01 9803844-01 9803844-01 9803844-01 9803844-01 <br /> Date Prepared: 03/16/98 03/16/98 03/16/98 03/16/98 03/16/98 03/16/98 <br /> iDate Analyzed: 03/17/98 03/17/98 03/17/98 03/17/98 03/17/98 03/17/98 <br /> Instrument I.D.#: H5 H5 H5 H5 H5 H5 <br /> Matrix Spike <br /> % Recovery: 72 69 73 80 88 87 <br /> Matrix Spike <br /> Duplicate <br /> Recovery: 72 68 73 71 83 78 <br /> Relative <br /> Difference: 1.3 1.8 0.80 12 s.o 11 <br /> Please Note: <br /> SEQUOIA ANALYT CAL 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 /> Linda C. Schneider <br /> Project Manager/Sacramento Laboratory Page 1 of 2 <br /> 8030426.KLF <25> <br />