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Sequoia 680 Che eake Drive Redwood City, CA 94063 650) 364-9600 FAX (650) 364-9233 <br />4D 404 N. Wiget Lane Walnut Creek, CA 9459E (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 <br />1455 McDowell Blvd. North, Ste. D Petaluma, CA 94954 (707) 792-1865 FAX (707) 792-0342 <br />::.;;::: . .......................::.: <br />Gettler-Ryan Dublin Client ProjectID: Chevron #9-3232, Stockton <br />6747 Sierra Court, Suite J Matrix: Solid <br />Dublin, CA 94568 <br />Attention: Greg Gurss OC Sample Group: 9031116-129 Reported: Mar 16, 19! <br />FOIFET"HEW-4111 H-06�ael W <br />ANALYTE <br />Acenaphthene <br />4-Nitrophenol <br />2,4-Dinitro- <br />Pentachloro- <br />Pyrene <br />Batch#: <br />BLK031299 <br />BLK031299 <br />toluene <br />phenol <br />BLK031299 <br />Prep. Method: <br />EPA 3550 <br />EPA 3550 <br />EPA 3550 <br />EPA 3550 <br />EPA 3550 <br />Method: <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 />MS/MSD <br />Batch#: <br />BLK031299 <br />BLK031299 <br />BLK031299 <br />BLK031299 <br />BLK031299 <br />Date Prepared: <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />Date Analyzed: <br />3/15/99 <br />3/15/99 <br />3/15/99 <br />3/15/99 <br />3/15/99 <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 />Conc. Spiked: <br />3300 Ng/kg <br />5000 Ng/kg <br />3300 Ng/kg <br />5000µg/kg <br />3300 Ng/kg <br />Matrix Spike <br />% Recovery: <br />79 <br />64 <br />76 <br />76 <br />79 <br />Matrix Spike <br />Duplicate % <br />Recovery: <br />82 <br />66 <br />76 <br />78 <br />91 <br />Relative % <br />Difference: <br />3.8 <br />3.1 <br />0.0 <br />2.6 <br />14 <br />RPD Limit: <br />0-40 <br />0-40 <br />0-40 <br />0-40 <br />0-40 <br />LCS Batch#: <br />_ <br />Date Prepared: <br />- <br />Date Analyzed: <br />- <br />Instrument I.D.#: <br />LCS % <br />Recovery: <br />% ecovery <br />Control Limits: 31-137 11-114 28-89 17-109 35-142 <br />SEQUOIA ANALYTICAL, #1271 <br />ulianne Fegley <br />Project Manager <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 matrix spike is an aliquot of sample <br />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 />interference, the LCS recove Is to be used to validate the batch. <br />Page 2 of 2 <br />9031116.GET <35> <br />