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Sequoia <br />EPA 8270 <br />680 Chesapeake Drive <br />Redwood City, CA 94 <br />(415) 364.9600 <br />FAX (415) 364-9233 <br />ID <br />I. Dalvand <br />404 N. Wiget Lane <br />Walnut Creek, CA 94 <br />(510) 988-9600 <br />FAX (510) 988-9673 <br />woAnalytical <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />ueo5trategies inc. <br />3164 Gold Camp Dr., Suite 240 <br />Rancho Cordova, CA 95670 <br />Attention: Greg Gurss <br />(went Project IU: uNUC:AL, I Osco - <br />Matrix: Soil <br />QC Sample Group 7050335-0336 <br />ANALYTE 2,4-Dinitro- Penta - <br />Acenaphthene 4-Nitrophenol toluene chlorophenol Pyrene <br />Reported: May 21, 1 <br />Method: <br />EPA 8270 <br />EPA 8270 <br />EPA 8270 <br />EPA 8270 <br />EPA 8270 <br />Analyst: <br />I. Dalvand <br />1. Dalvand <br />1. Dalvand <br />I. Dalvand <br />I. Dalvand <br />Concentration <br />Spiked: <br />2500 ug/kg <br />5000 ug/kg <br />2500 ug/kg <br />5000 ug/kg <br />2500 ug/kg <br />LCS Batch#: <br />LCS051997 <br />LCS051997 <br />LCS051997 <br />LCS051997 <br />LCS051997 <br />Date Prepared: <br />05/19/97 <br />05/19/97 <br />05/19/97 <br />05/19/97 <br />05/19/97 <br />Date Analyzed: <br />05/19/97 <br />05/19/97 <br />05/19/97 <br />05/19/97 <br />05/19/97 <br />Instrument I.D.#: <br />GC/MS-1 <br />GC/MS-1 <br />GC/MS-1 <br />GC/MS-1 <br />GC/MS-1 <br />LCS % <br />Recovery: <br />92 <br />88 <br />88 <br />116 <br />108 <br />Control Limits: <br />31-137 <br />11-114 <br />28-89 <br />17-109 <br />35-142 <br />MS/MSD <br />Batch #: <br />7050421 <br />7050421 <br />7050421 <br />7050421 <br />7050421 <br />Date Prepared: <br />05/19/97 <br />05/19/97 <br />05/19/97 <br />05/19/97 <br />05/19/97 <br />Date Analyzed: <br />05/19/97 <br />05/19/97 <br />05/19/97 <br />05/19/97 <br />05/19/97 <br />Instrument I.D.#: <br />GC/MS-1 <br />GC/MS-1 <br />GC/MS-1 <br />GC/MS-1 <br />GC/MS-1 <br />Matrix Spike <br />% Recovery: <br />96 <br />74 <br />92 <br />96 <br />116 <br />Matrix Spike <br />Duplicate % <br />Recovery: <br />108 <br />84 <br />96 <br />100 <br />120 <br />Relative % <br />Difference: <br />12 <br />13 <br />4.3 <br />2.0 <br />3.4 <br />SEQUOIA ANALYTICAL <br />M. SMO <br />Edana M. Fruciano <br />Project Manager/Sacramento La <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 />)ratory Page 2 of 2 <br />-A <br />7050335.GSI <18> <br />