Laserfiche WebLink
a <br /> a <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> Ki)- 404 NWiget 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 /> EMCON Client Project ID ARCO 548, Stockton, CA <br /> 1433 N Market Blvd Matrix Sod <br /> Sacramento, CA 95834 <br /> Attention Mark Capps QC Sample Group 8020225-4233 Reported Feb 12, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl <br /> Benzene Toluene Benzene Xylenes <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst 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 <br /> LCS Batch# LCS021298 LCS021298 LCS021298 LCS021298 <br /> Date Prepared 02/12/98 02/12/98 02/12/98 02/12/98 <br /> Date Analyzed 02/12/98 02/12/98 02/12/98 02/12/98 <br /> Instrument I D # GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> LCS <br /> Recovery 99 101 101 100 <br /> Control Limits 70-130% 70-130% 70130% 70-130% <br /> MS/MSD <br /> Batch # 8020230 8020230 8020230 8020230 <br /> Date Prepared 02/12/98 02/12/98 02/12/98 02/12/98 <br /> Date Analyzed 02/12/98 02/12/98 02/12/98 02/12/98 <br /> Instrument I D # GCHP 1 GCHP 1 GCHP 1 GCHP 1 <br /> Matrix Spike <br /> % Recovery 78 80 81 82 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery 82 84 84 85 <br /> Relative <br /> Difference so 49 36 36 <br /> UOIA ANALYTICAL ,� Please Note <br /> The LCS 1s 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/MSD's are advisory only <br /> Ronald W Bobel and are not used to accept or resect batch results <br /> Project Manager/Sacramento Laboratory <br /> 8020225 EMC <7> <br />