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Sequoia 680 Ch.�apeake Drive Redwood City, CA 94063 (650) 364-9600 FAX (650) 364-9233 <br /> 404 N. Wlget Lane Walnut Creek. CA 94598 (925) 988-9600 FAX (925) 988 -9673 <br /> 819 Striker Avenue, Suite 8 Sacramento. CA 95834 (916) 921 -9600 FAX (916 ) 921 - 0100 <br /> Analytical 1455 McDowell Blvd. North, Ste. D Petaluma, CA 94954 (707) 792- 1865 FAX (707 ) 792- 0342 <br /> Gettler-Ryan Dublin Client Project ID : Chevron #9-3232 , Stockton <br /> 6747 Sierra Court, Suite J Matrix: Solid <br /> lee <br /> Dublin, CA 94568 <br /> Attention : Greg Gurss QC Sample Group: 9031092-104 Reported : Mar 17, 19995. <br /> le <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Cadmium Chromium Nickel Lead 21nc Aroclor 1260 <br /> Method : EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 8082 <br /> Analyst: J. Kelly J. Kelly J. Kelly J. Kelly J. Kelly Star Analytical <br /> MS/MSD <br /> Batch#: 9030973 9030973 9030973 9030973 9030973 03V9286 <br /> Date Prepared : 3/12/99 3/12/99 3/12/99 3/12/99 3/12/99 3/14/99 <br /> Date Analyzed : 3/15/99 3/15/99 3/ 15/99 3/15/99 3/15/99 3/15/99 <br /> Instrument I. D.#: MV-4 MV-4 MV-4 MV-4 MV-4 - <br /> Conc. Spiked : 50 mg/kg 50 mg/kg 50 mg/kg 50 mg/kg 50 mg/kg 67 pg/kg <br /> Matrix Spike <br /> % Recovery: 98 110 124 106 132 69 <br /> Matrix Spike <br /> Duplicate <br /> Recovery: 98 110 104 100 92 82 <br /> Relative <br /> Difference: 0.0 0.0 7.4 3.7 13 17 <br /> ell <br /> el <br /> LCS Batch# : LCS031299 LCS031299 LCS031299 LGS031299 LCS031299 <br /> f <br /> Date Prepared : 3/12/99 3/12/99 3/12/99 3/12/99 3/12/99 - <br /> Date Analyzed : 3/15/99 3/15/99 3/15/99 3/15/99 3/15/99 <br /> Instrument LD.# : MV-4 MV-4 MV-4 MV-4 MV-4 - <br /> LCS <br /> Recovery: 104 108 108 98 104 - <br /> Recovery <br /> Control Limits : 80-120 80-120 80-120 80-120 80-120 50- 150 <br /> Please Note: <br /> The LCS is a control sample of known, interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL, #1271 preparation, and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> & #1894 fortified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br /> , . , the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> Janne F Interference, the LCS recoveryIs to be used to validate the batch. <br /> Julianne Fegley <br /> Project Manager <br /> 9031092.GET <28> <br />