Laserfiche WebLink
A <br /> Sequoia 680 Chesapeake 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 (9Z5) 988 -9673 <br /> _ Analytical 819 Striker Avenue, Suite 8 Sacramento, CA 95834 (916 ) 921-9600 FAX (916) 921 - 0100 <br /> 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 /> Dublin, CA 94568 <br /> Attention: Greg Gurss QC Sample Group: 9031116-129 Reported : Mar 16 , 1999`;;' <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Acenaphthene 4-Nitrophenol 2,4-Dinitro- Pentachloro- Pyrene <br /> toluene phenol <br /> Prep. Method : EPA 3550 EPA 3550 EPA 3550 EPA 3550 EPA 3550 <br /> Method : EPA 8270 EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Analyst: L. Diaz L. Diaz L. Diaz L. Diaz L. Diaz <br /> MS/MSD <br /> Batch#: BLK031299 BLK031299 BLK031299 BLK031299 BLK031299 <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 .#: GC/MS 1 GC/MS 1 GC/MS 1 GC/MSI GC/MS 1 <br /> Conc, Spiked : 3300 pg/kg 5000 pg/kg 3300 pg/kg 5000 pg/kg 3300pg/kg <br /> Matrix Spike <br /> % Recovery: 79 64 76 76 79 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery: 82 66 76 78 91 <br /> Relative % <br /> Difference: 3.8 3.1 0.0 2.6 14 <br /> RPD Limit: 0-40 0-40 0-40 0-40 0-40 <br /> LCS Batch#: <br /> Date Prepared : <br /> Date Analyzed : <br /> Instrument I . D . # : <br /> LCS <br /> Recovery : - <br /> ecovery <br /> Control Limits : 31 -137 11 - 114 28-89 17-109 35-142 <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 /> • 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 recoveryIs to be used to validate the batch. <br /> ullanne Fegley <br /> Project Manager Page 2 of 2 <br /> 9031116.GET < 35 > <br />