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Sequoia 080 Chesapeake Drive Redwood City,CA 94063415) 364-9600 FAX(415) 364-9233 <br /> 404 N.WiBct Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988.9673 <br /> 819 Striker Avenue,Suite 8 Sacnmento,CA 95834 (916) 921-9600 FAX(916)921.0100 <br /> frlll� Analytical <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 1,4-Dichloro- N-Nitroso-Di- 1,2,4-Trichloro- 4-Chloro-3- <br /> Phenol 2-Chlorophenol benzene N-propylamilne benzene Meth hen <br /> Method: EPA2270 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: 200pg/L 200 pg/L 200 pg/L 200pg/L 200 pg/L 200 pg/L <br /> LCS Batch#: LCS091597 LCS091597 LCS091597 LCS091597 LCS091597 LCS091597 <br /> Date Prepared: 09/15/97 09/15/97 09/15/97 09/15/97 09/15/97 09/15/97 <br /> Date Analyzed: 09/16/97 09/16/97 09/16/97 09/16/97 09/16/97 09/16/97 <br /> Instrument I.D.#: F4 F4 F4 F4 F4 F4 <br /> LCS % <br /> Recovery: 35 70 66 83 75 64 <br /> Control Limits: 12-110 27-123 36-97 41-116 39-98 23-97 <br /> ��a ? x:'..n.�n xew rc.r�, mea• vzwb... '6. hsc,.`.L`.�•.�:rC' �'!ttC>H.<0...� - <br /> .�. ' `?1:�a'e?e� MEW <br /> MS/MSD <br /> Batch#: BS091597 BS091597 BS091597 BS091597 BS091597 BS091597 <br /> Date Prepared: 09/15/97 09/15/97 09/15/97 09/15/97 09/15/97 09/15/97 <br /> Date Analyzed: 09/16/97 09/16/97 09/16/97 09/16/97 09/16/97 09/16/97 <br /> Instrument I.D.#: F4 F4 F4 F4 F4 F4 <br /> Matrix Spike <br /> %Recovery: 35 70 66 83 75 64 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 47 e0 70 87 78 74 <br /> Relative% <br /> Difference: 28 14 5.9 4.7 4.6 14 <br /> Please Note: <br /> SEQU IA ANALYTICAL 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 /> yder <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 acce t or reject batch results. <br /> Inda C. Schn <br /> Project Manager/Sacramento Laboratory Page i of 2 <br /> 7090550.KLF <20> <br /> IR <br />