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p1 4 Sequoia <br />1w Analytic] <br />KleinTemer - JLOCKton <br />2825 East Myrtle St. <br />Stockton, CA 95205 <br />Attention: Tony Martin <br />v <br />11 <br />Matrix: Soil/Water <br />QC Sample Group: S906400 <br />toluene <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9610 <br />FAX (916) 921-0100 <br />Reported: Jul 13, 1999 <br />Tin <br />EPA 8270 <br />f <br />Acenaphthene <br />EPA 8270 <br />Method: <br />EPA 8270 <br />L. Diaz <br />Analyst: <br />L. Diaz <br />J. Kelly <br />Concentration <br />3,300 pg/kg <br />5,000 pg/kg <br />Spiked: <br />3,300 pg/kg <br />BLK062599B <br />LCS Batch#: <br />BLK062599B <br />BLK062599B <br />Date Prepared: <br />06/25/99 <br />11-114% <br />Date Analyzed: <br />06/28/99 <br />35-142% <br />Instrument I.D.#: <br />GC/MS 1 <br />v <br />11 <br />Matrix: Soil/Water <br />QC Sample Group: S906400 <br />toluene <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9610 <br />FAX (916) 921-0100 <br />Reported: Jul 13, 1999 <br />Tin <br />EPA 8270 <br />EPA 8270 <br />EPA 8270 <br />EPA 8270 <br />EPA 6010 <br />L. Diaz <br />L. Diaz <br />L. Diaz <br />L. Diaz <br />J. Kelly <br />5,000 pg/kg <br />3,300 pg/kg <br />5,000 pg/kg <br />3,300 pg/kg <br />50 mg/kg <br />BLK062599B <br />BLK062599B <br />BLK062599B <br />BLK062599B <br />LCS062999A <br />Tin <br />EPA 200.7 <br />J. Kelly <br />1.0 mg/L <br />LCS062999A <br />06/25/99 06/25/99 06/25/99 06/25/99 06/29/99 06/29/99 <br />06/28/99 06/28/99 06/28/99 06/28/99 07/11/99 07/11/99 <br />GUMS 1 GUMS 1 GUMS 1 GC/MS 1 MV -3 MV -3 <br />SEQUOIA ANALYTICAL 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 />Sandra R. Hanson and are not used to accept or reject batch results. <br />Project Manager/Sacramento Labor, o age 2 of 2 <br />S906400.KLF <16> <br />0 <br />LCS % <br />Recovery: <br />73 <br />80 <br />76 <br />84 <br />79 <br />102 <br />100 <br />Control Limits: <br />31-137% <br />11-114% <br />28-89%u <br />17-109% <br />35-142% <br />80-120% <br />80-120% <br />MS/MSD <br />Batch #: <br />9061783 <br />9061783 <br />9061783 <br />9061783 <br />9061783 <br />9060210 <br />9062013 <br />Date Prepared: <br />06/25/99 <br />06/25/99 <br />06/25/99 <br />06/25/99 <br />06/25/99 <br />06/29/99 <br />06/29/99 <br />Date Analyzed: <br />06/29/99 <br />06/28/99 <br />06/28/99 <br />06/28/99 <br />06/28/99 <br />07/11/99 <br />07/11/99 <br />Instrument I.D.#: <br />GC/MS 1 <br />GC/MS 1 <br />GC/MS 1 <br />GUMS 1 <br />GC/MS 1 <br />MV -3 <br />MV -3 <br />Matrix Spike <br />% Recovery: <br />67 <br />76 <br />70 <br />80 <br />76 <br />87 <br />97 <br />Matrix Spike <br />Duplicate % <br />Recovery: <br />70 <br />80 <br />73 <br />80 <br />73 <br />89 <br />95 <br />Relative % <br />Difference: <br />4.4 <br />5.1 <br />4.3 <br />0.0 <br />4.1 <br />2.0 <br />2.1 <br />SEQUOIA ANALYTICAL 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 />Sandra R. Hanson and are not used to accept or reject batch results. <br />Project Manager/Sacramento Labor, o age 2 of 2 <br />S906400.KLF <16> <br />0 <br />