Laserfiche WebLink
ID Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Sulte 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> A&V1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> j 5 <br /> ettler-Ryan=6Ubliri y ' y Client Protect ID `Unoc440187, Stockton <br /> 6747 Sierra Court, Suite J Matrix Solid <br /> Dublin, CA 94568 <br /> Attention Haig Kevork QC Sample Group 904-0009 Reported Apr 7, 1999 , <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes Lead <br /> Benzene <br /> Method- EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 6010 <br /> Analyst C Westwater C Westwater C Westwater C Westwater J Kelly <br /> MS/MSD <br /> Batch# 9040280 9040280 9040280 9040280 9040096 <br /> Dale Prepared 4/6/99 4/6/99 4/6/99 4/6/99 4/2/99 <br /> Date Analyzed. 4/6/99 4/6/99 4/6/99 4/6/99 4/5/99 <br /> Instrument I D.#. HP-4 HP-4 HP-4 HP-4 MV-4 <br /> Conc Spiked 0 80 mg/kg 0 80 mg/kg 0 80 mg/kg 2 4 mg/kg 50 mg/kg <br /> Matrix Spike <br /> % Recovery 93 79 85 92 86 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 90 78 81 92 86 <br /> Relative% <br /> Difference 27 16 45 0 0 00 <br /> LCS Batch# 4LCSO40699 4LCSO40699 4LCSO40699 4LCSO40699 LC8040299 <br /> Date Prepared 4/6/99 4/6/99 4/6/99 4/6/99 4/2/99 <br /> Date Analyzed 4/6/99 4/6/99 4/6/99 4/6/99 4/5/99 <br /> Instrument I.D.#. HP-4 HP-4 HP-4 HP-4 MV-4 <br /> LCS % <br /> Recovery. 98 83 86 96 100 <br /> Recovery <br /> Control Limits 50-150 50-150 50-150 50-150 80.120 <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 recove Is to be used to validate the batch <br /> lianne Fegley <br /> Project Manager <br /> 9040009 G ET <3> <br />