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1 4 Sequoia <br />ID <br />m%ff Analytical <br />tmeinremer - otucmun <br /><2825 East Myrtle St. <br />>= Stockton, CA 95205 <br />ntion: Tony Martin <br />I <br />Matrix: v�vv` SoilNVater <br />QC Sample Group: S906400 <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />Reported: Jul 13, 1999 <br />I <br />SEQUOIA ANALYTICAL <br />Please Note: <br />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 />Sandra R. Hanson <br />Project Manager/Sacramento Laboratory Page 1 of 2 <br />S906400.KLF <15> <br />ANALYTE <br />1,4-Dichloro- <br />N -Nitroso -Di- <br />1,2,4-Trichloro- <br />4 -Chloro -3 - <br />I <br />Phenol <br />2 -Chlorophenol <br />benzene <br />N-propylamine <br />benzene <br />Methylphenyl <br />Method: <br />EPA 8270 <br />EPA 8270 <br />EPA 8270 <br />EPA 8270 <br />EPA 8270 <br />EPA 8270 <br />Analyst: <br />L. Diaz <br />L. Diaz <br />L. Diaz <br />L. Diaz <br />L. Diaz <br />L. Diaz <br />Concentration <br />Spiked: <br />5,000 pg/kg <br />5,000 Mg/kg <br />3,300 Mg/kg <br />3,300 pg/kg <br />3,300 pg/kg <br />5,000 pg/kg <br />LCS Batch#: <br />BLK062599B <br />BLK062591B <br />BLK062599B <br />BLK062599B <br />BLK062199B <br />BLK062599B <br />Date Prepared: <br />06/25/99 <br />06/25/99 <br />06/25/99 <br />06/25/99 <br />06/25/99 <br />06/25/99 <br />Date Analyzed: <br />06/28/99 <br />06/28/99 <br />06/28/99 <br />06/28/99 <br />06/28/99 <br />06/28/99 <br />Instrument I.D.#: <br />GC/MS 1 <br />GUMS 1 <br />GUMS 1 <br />GUMS 1 <br />GUMS 1 <br />GC/MS 1 <br />LCS % <br />Recovery: <br />60 <br />76 <br />73 <br />85 <br />82 <br />76 <br />Control Limits: <br />26-90% <br />25-102% <br />28-104% <br />41-126% <br />38-107% <br />26-103% <br />..........<' ;.`.°..MS/MSD>< <br />:::.......................................... <br />...................... ................................................................................................................................................................................... <br />Batch #: <br />9061783 <br />9061783 <br />9061783 <br />9061783 <br />9061783 <br />9061783 <br />Date Prepared: <br />06/25/99 <br />06/25/99 <br />06/25/99 <br />06/25/99 <br />06/25/99 <br />06/25/99 <br />Date Analyzed: <br />06/29/99 <br />06/29/99 <br />06/29/99 <br />06/29/99 <br />06/29/99 <br />06/29/99 <br />Instrument I.D.#: <br />GC/MS 1 <br />GUMS 1 <br />GUMS 1 <br />GUMS 1 <br />GC/MS 1 <br />GUMS 1 <br />Matrix Spike <br />% Recovery: <br />56 <br />66 <br />61 <br />73 <br />70 <br />70 <br />Matrix Spike <br />Duplicate % <br />Recovery: <br />56 <br />66 <br />64 <br />76 <br />70 <br />72 <br />Relative % <br />Difference: <br />0.0 <br />0.0 <br />4.9 <br />4.1 <br />0.0 <br />2.8 <br />I <br />SEQUOIA ANALYTICAL <br />Please Note: <br />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 />Sandra R. Hanson <br />Project Manager/Sacramento Laboratory Page 1 of 2 <br />S906400.KLF <15> <br />