Laserfiche WebLink
41) Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 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 Environmental Group Client Project ID 920-119 1A/Chevron 9-6171, Stockton CA <br /> 11315 Sunrise Gold Circle, Ste M Matrix Soil <br /> Rancho Cordova, CA 95742 <br /> Attention Tim Anenson QC Sample Grou 8010310-0314 Reported Jan 26, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl <br /> Benzene Toluene Benzene X lenes Diesel <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 DHS LUFT <br /> Analyst C Lee C Lee C Lee C Lee C Lee <br /> Concentration <br /> Spiked 0 20 mg/kg 0 20 mg/kg 0 20 mg/kg 0 60 mg/kg 12 5 mg/kg <br /> LCS Batch# LCS011698 LCS011698 LCS011698 LCS011698 LCS011598 <br /> Date Prepared 01/16/98 01/16/98 01/16/98 01/16/98 01/15/98 <br /> Date Analyzed 01/16/98 01/16/98 01/16/98 01/16/98 01/15/98 <br /> Instrument I D # GCHP 1 GCHP 1 GCHP-1 GCHP 1 GCHP 3B <br /> is LCS % <br /> Recovery so 78 80 81 93 <br /> Control Limits 70-130 70 130 70 130 70 130 60 140 <br /> MS/MSD <br /> Batch # 8010310 8010310 8010310 8010310 8010314 <br /> Date Prepared 01/16/98 01/16/98 01/16/98 01/16/98 01/15/98 <br /> Date Analyzed 01/16/98 01/16/96 01/16/98 01/16/98 01/19/98 <br /> Instrument I D # GCHP 1 GCHP-1 GCHP-1 GCHP-1 GCHP 38 <br /> Matrix Spike <br /> % Recovery 84 82 86 87 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery 87 86 91 91 <br /> Relative % <br /> Difference 35 4 8 5 6 4 5 <br />�SEQLIPJA ANALYTICA Please Nate <br /> / The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents <br /> G/'�J`'/j�L preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> ��! LCS validation of sample batch results Due to matrix effects,the QC limits for MS/MSD's are advisory only <br /> in <br /> C Schneider and are not used to accept or refect batch results *Matrix Interference <br /> Project Manager/Sacramento Laboratory <br /> 8010310 PES <25> <br />