Laserfiche WebLink
' ,d0 Chesapeake Drive Redwood City CA 94063 .,50) 364 9600 FAX(650)364 9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Pacific rznvironmental Group Client Project ID 920-122 1A/Chevron 9-9840, Stockton, CA <br /> 11315 Sunrise Gold Circle, Ste M Matrix Soil <br /> Rancho Cordova, CA 95742 <br /> Attention Tim Anenson OC Sample Group 8030464-0465 Reported Mar 26, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes; MTBE <br />' Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8260 <br /> Analyst C Lee C Lee C Lee C Lee K Pocan <br /> Concentration <br />' Spiked 0 20 mg/kg 0 20 mg/kg 0 20 mg/kg 0 60 mg/kg 2,500 fig/kg <br /> LCS Batch# LCS032098 LCS032098 LCS032098 LCS032098 LCS032098 <br /> Date Prepared 03/20/98 03/20/98 03/20/98 03/20/98 03/20/98 <br /> Date Analyzed 03/20/98 03/20/98 03/20/98 03/20/98 03/20/98 <br /> Instrument I D # GCHP-1 GCHP-1 GCHP-1 GCHP 1 MS-F1 <br /> LCS % <br /> Recovery 120 105 100 98 99 <br /> Control Limits 70-130% 70-130% 70-130% 70-130% 70130% <br />' MS/MSD <br /> Batch# 8030828 8030828 8030828 8030828 BS032098 <br /> Date Prepared 03/20/98 03/20/98 03/20/98 03/20/98 03/20/98 <br /> Date Analyzed 03/20/98 03/20/98 03/20/98 03/20/98 03/20/98 <br /> Instrument I D # GCHP-1 GCHP-1 GCHP-1 GCHP-1 MS-F1 <br /> Matrix Spike <br /> % Recovery 112 98 96 95 99 <br />' Matrix Spike <br /> Duplicate% <br /> Recovery 110 99 96 94 93 <br />' Relative % <br /> Difference 1 8 1 0 00 10 62 <br /> /SEQUOANALYTICAL 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 LCS%recovery data is used for <br /> validation of sample batch results Due to matrix effects the QC limits for MS/MSO s are advisory only <br /> chneider and are not used to accept or reject batch results <br /> nager/Sacramento Labors ory <br /> 8030464 PES <4> <br />