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Sequoia 680 Chesapeake Drive Redwood City,CA 940 (415) 364-9600 FAX(415) 364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> TAW <br /> I....... ................. .................. RXM <br /> 0 M: ?< <br /> kleinfelder it.e M <br /> .Client 2WMI/18146/8preckles <br /> �1 2825 East Myrtle St. Matrix: Soil <br /> Stockton, CA 95205 <br /> Tony Martin OC Sample Group 7010355-62 Reported: Jan 27, 1997,.1, <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 ylphen yl <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: 3300 ug/kg 3300 ug/kg 3300 ug/kg 3300 ug/kg 3300 ug/kg 3300 ug/kg <br /> LCS Batch#: LCS01 1597 LCS011597 LCS01 1597 LCS01 1597 LCS01 1597 LCS01 1597 <br /> Date Prepared: 01/15/97 01/15/97 01/15/97 01/15/97 01/15/97 01/15/97 <br /> Date Analyzed: 01/20/97 01/20/97 01/20/97 01/20/97 01/20/97 01/20/97 <br /> Instrument I.D.#: F4 F4 F4 F4 F4 F4 <br /> LCS % <br /> Recovery: 79 78 53 82 64 76 <br /> Control Limits: 26-90 25-102 28-104 41-126 38-107 26-103 <br /> ........... <br /> K <br /> IM <br /> MS/MSD <br /> Batch #: 9701679-02 9701679-02 9701679-02 9701679-02 9701679-02 9701679-02 <br /> Date Prepared: 01/15/97 01/15/97 01/15/97 01/15/97 01/15/97 01/15/97 <br /> Date Analyzed: 01/21/97 01/21/97 01/21/97 01/21/97 01/21/97 01/21/97 <br /> Instrument I.D.#: F4 F4 F4 F4 F4 F4 <br /> Matrix Spike <br /> % Recovery: 65 58 23 56 41 55 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 71 67 36 63 53 57 <br /> Relative% <br /> Difference: 8.5 14 44 12 25 4.9 <br /> Please Note: <br /> SEQUOIA 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 /> XPM M W166WVZ— validation of sample batch results. Due to matrix effects,the OC limits for MS/MSD's are advisory only <br /> and are not used to accept or reject batch results. — <br /> Edana M. Belschner <br /> Project Manager/Sacramento Laboratory Page 1 of 2 7010362.KLF <6> <br /> Gft <br />