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Sequoia680 Criesapeake Dnve Redwood City CA 94963 (415) 364 9600 FAX(415) 364 9233 N et Lane Walnui C eek CA 94598 <br /> 404 Wi <br /> g (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 /> Kieinfeider ' Client project Ifs 20-1129-30 <br /> 2825 East Myrtle St Matrix Water <br /> Stockton, CA 95205 <br /> Attention Roman Racca OC Sample Group 7050605-06 Reporter! Jun 3, 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-propylamine benzene Methylphenyl <br /> Method EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Analyst I Dalvand I Dalvand I Dalvand I Dalvand I Dalvand I Dalvand <br /> Concentration <br /> Spiked 200 ug/L 20oug/L 100pg/L 100ug/L 100 ug/L 200{x9/L <br /> LCS Batch# LCS052397 LC8052397 LCS052397 LCS052397 LCS052397 LCS052397 <br /> Date Prepared' 05/23/97 05/23/97 05/23/97 05/23/97 05/23/97 05/23/97 <br /> ' Date Analyzed 05/26/97 05/26/97 05/26/97 05/26/97 05/26/97 05/26/97 <br /> Instrument I.D.#. GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 <br /> LCS% <br /> Recovery 105 90 82 100 88 85 <br /> Control Limits. 12-110 27-123 36-97 41-116 39-98 23-97 <br /> MS/MSD <br /> Batch#;'' BS052397 BS052397 BS052397 BS052397 BS052397 BS052397 <br /> Date Prepared 05/23/97 05/23/97 05/23/97 05/23/97 05/23/97 05/23/97 <br /> Date Analyzed. 05/26/97 05/26/97 05/26/97 05/26/97 05/26/97 05/26/97 <br /> Instrument I D.# GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 GC/MS-1 <br /> Matrix Spike <br /> % Recovery 105 110 98 98 98 90 <br /> Matrix Spike <br /> ' Duplicate% <br /> Recovery 105 110 100 92 100 95 <br /> Relative% <br /> Difference 0 0 00 20 6 3 20 54 <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 /> M !'CZIaC.fP�� validation of sample batch results Due to matrix effects,the CC limits for MS/MSDs are advisory only <br /> and are not used to accept or reject batch results <br /> Edana M Fruclana <br /> Project Manager/Sacramento Laboratory Page 1 of 2 <br /> 7050605 KLF <10> <br />