Laserfiche WebLink
Sequoia Chesapeake Drive Redwood City,CA, 13 (650)364-9600 FAX(650)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0 100 <br /> Analytical 1455 McDowell Blvd. North,Ste. D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos,CA 94070-411 1 (650)232-9600 FAX(650)232-9612 <br /> EMCON /'Pmnacfe Client Project 1D: ARCO 2186, Stockton, CA - <br /> 3939 Cambridge Rd., Ste. 220 Matrix: Soil <br /> Cameron Park, CA 95682 <br /> Attention Mark Capps QC Sample Group: S906308 Reported: Jun 18, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> YTE Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: J.Minkel J.Minkel J. Minkel J.Minkel <br /> Concentration <br /> Spiked: 0.80 mg/kg Q.80 mg/kg 0.80 mg/kg 2.4 mg/kg <br /> LCS Batch#: 5LCS061899 5LCS061899 5LCS061899 5LCS061899 <br /> Date Prepared: 06/18/99 06/18/99 06/18/99 06/18/99 <br /> Date Analyzed: 06/18/99 06/18/99 06/18/99 66/18/99 <br /> Instrument I.D.#: HP-5 HP-5 HP-5 HP-5 <br /> LCS % <br /> Recovery: 90 89 89 92 <br /> Control Limits: 50-150% 50-150% 50-150% 50-150% <br /> MS/MSD <br /> Batch #: 9061340 9061340 9061340 9061340 <br /> Date Prepared: 06/18/99 06/18/99 06/18/99 06/18/99 <br /> Date Analyzed: 06/18/99 06/18/99 06/18/99 06/18/99 <br /> Instrument I.D.#: HP-5 HP-5 HP-5 HP-5 <br /> Matrix Spike <br /> % Recovery: 103 104 105 108 <br /> Matrix Spike <br /> Duplicate <br /> Recovery: 96 98 99 100 <br /> Relative % <br /> Difference: 6.3 6.2 6.1 8.0 <br /> SEQUOIA ANALYTICAL 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/MSD's are advisory only <br /> Ronald W. Bobeland are not used to accept or reject batch results. <br /> Project Manager/Sacramento Labors or <br /> S906308.PCP <2> <br />