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Sequoia 08o Chesapeake Drive Redwood City,CA 94063*15) 364-9600 FAX(415)364.9233 <br /> ■_ J 404 N.Wieet Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> \r Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)92 1-0100 <br /> Kleinfelder Client Projec[ 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, 19974 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 2,4-Dinitro- Penta- <br /> Acenaphthene 4-Nitrophenol toluene chlorophenol Pyrene <br /> Method: EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Analyst: B.Pitamah B.Pitamah B.Pitamah B.Pitamah B.Pitamah <br /> Concentration <br /> Spiked: 3,300 Ng/kg 3,300pg/kg 3,300 pg/kg 3,300yg/kg 3,300yg/kg <br /> LCS Batch#: LCS091297 LCS091297 LCS091297 LCS091297 LCS091297 <br /> Date Prepared: 09/12/97 09/12/97 09/12/97 09/12/97 09/12/97 <br /> Date Analyzed: 09/13/97 09/13/97 09/13/97 09/13/97 09/13/97 <br /> Instrument I.D.#: F4 F4 F4 F4 F4 <br /> LCS % <br /> Recovery: 55 37 52 46 49 <br /> Control Limits: 31-137 11-114 28-89 17-109 35-142 <br /> MS/MSD <br /> Batch #: 9709537-04 9709537-04 9709537-04 9709537-04 9709537-04 <br /> Date Prepared: 09/12/97 09/12/97 09/12/97 09/12/97 09/12/97 <br /> Date Analyzed: 09/13/97 09/13/97 09/13/97 09/13/97 09/13/97 <br /> Instrument I.D.#: F4 F4 F4 F4 F4 <br /> Matrix Spike <br /> % Recovery: 57 45 55 52 56 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 58 35 54 38 53 <br /> Relative% <br /> Difference: 1.6 24 0.80 31 8.1 <br /> SEQ OIA ANALYTICAL Please Note: <br /> / The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> /Urn <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 CC limits for MS/MSD's are advisory only <br /> C. Schneider and are not used to accept or reject batch results. <br /> ct Manager/Sacramento boratory Page 2 of 2 <br /> 7090550.KLF <19> <br />