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Sequoia <br />680 CheDrive Redwood City. CA 94063 <br />650) 364-9600 FAX (650) 364-9233 <br />EPA 7471 <br />404 N. Wiget Lane Walnut Creek. CA 94598 <br />(9Z5)988-9600 FAX (925) 988-9673 <br />Conc. Spiked: <br />819 Striker Avenue, Suite 8 Sacramento, CA 95834 <br />(916) 921-9600 FAX (916) 921-0100 <br />Analytical <br />1455 McDowell Blvd. North. Ste. D Petaluma. CA 94954 <br />(707) 792-1865 FAX(707)79Z-0342 <br />GetEler-Ryan - Dublin <br />Cliientf'roject 'ID: Chevron #9-3232, Stockton <br />6747 Sierra Court, Suite J <br />Matrix: Solid <br />Dublin, CA 94568 <br />Attention: Greg Gurss <br />QC Sample Group: 9031116-129 <br />Reported: Mar 16, 1999 <br />!� � • '• iii � •` <br />ANALYTE <br />Mercury <br />Method: <br />EPA 7471 <br />Analyst: <br />T. Le <br />MS/MSD <br />Batch#: 9031125 <br />Date Prepared: <br />3/15/99 <br />Date Analyzed: <br />3/15/99 <br />Instrument I.D.#: <br />My -1 <br />Conc. Spiked: <br />0.10 mg/kg <br />LCS Batch#: LCS031599 <br />Date Prepared: 3/15/99 <br />Date Analyzed: 3/15/99 <br />Instrument I.D.#: My -1 <br />LCS % <br />Recovery: 120 <br />Recovery <br />- <br />Control Limits: 75-125 <br />SEQUOIA ANALYTICAL, #1271 <br />ulianne Fegley <br />Project Manager <br />'lease Note: <br />The LCS is a control sample of known, interferent free matrix that is analyzed using the same reagents, <br />weparation, and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br />ortified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br />he recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br />nterference, the LCS recovery is to be used to validate the batch. <br />9031116.GET <37> <br />