Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane walnut Credo.CA 94598 (925)988-9600 FAX(925)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 /> 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> Blaine Tech Services Client Project ID Chevron 9-20331990217-P1 <br /> 1680 Rogers Avenue <br /> San Jose, CA 96112 <br /> Attention Christine Lillie QC Sample Group 9902842-02-04 Reported Mar 5, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Matrix Liquid <br /> Method EPA 8020 <br /> Analyst TLP <br /> ANALYTE Benzene Toluene Ethylbenzene Xylenes <br /> QC Batch # GCO22599BTEX03A <br /> Sample No GW9902A26-02 <br /> Date Prepared 2125199 2125199 2125!99 2125199 <br /> Date Analyzed 2125199 2125/99 2125199 2125199 <br /> Instrument I D # GCHP03 GCHP03 GCHP03 GCHP03 <br /> Sample Cone uglL N D N D N D N D <br /> Cone Spiked u911- 10 10 10 30 <br /> Matrix Spike, ug/L 8 4 8 5 8 5 25 <br /> % Recovery 84 85 85 85 <br /> Matrix <br /> Spike Duplicate uglL 8 7 8 8 8 8 27 <br /> % Recovery 87 88 88 88 <br /> Relative % Difference 3 5 3 5 3 5 3 5 <br /> RPD Control Limits 0-25 025 0-25 0-25 <br /> LCS Batch# GCO22599STEX03A <br /> Date Prepared 2125199 2125199 2125199 2126199 <br /> Date Analyzed 2125199 2125199 2125199 2125/99 <br /> Instrument I D # GCHP03 GCHP03 GCHP03 GCHP03 <br /> Cone Spiked ug/L 10 10 10 30 <br /> LCS Recovery, ug/L 9 3 9 4 9 6 28 <br /> LCS % Recovery 93 94 96 95 <br /> Percent Recovery Control Limits <br /> MSIMSD 60140 60 140 60 140 60140 <br /> LCS 70130 70 130 70 130 70130 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> Please Note <br /> The LCS is a control sample of known interferent free matrix that is analyzed using the same reagents <br /> UOIA ANAL L 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 /> 44E( <br /> �rthe recovery of analytes from the matrix spike does not fall within specified control limns due to matrix <br /> l Y interference the LCS recovery is to be used to validate the batch <br /> Mei Mel Shen <br /> Project Manag <br />