Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(510)686%89 <br /> Analytical 819 St^ker Avcnue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> .oundwater Technology Client Project Ib ' Chevron #9-1918, Stockton, CA <br /> 1401 Halyard Drive, Suite 140 Matrix Soil <br /> West Sacramento, CA 95691 <br /> Attention Jason Fedota QC Sample Group 5060120-27, 130-37, 140-47 Reported Jun 6, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl <br /> Benzene Toluene Benzene Xylanes <br /> Method EPA 8020 EPA 8020 EPA 8020 I=PA 8020 <br /> Analyst C Chapman C Chapman C Chapman C Chapman <br /> Concentration <br /> Spiked 0 20 mg/kg 0 20 mg/kg 0 20 mg/kg 0 60 mg/kg <br /> LCS Batch# LCS060295 LCS060295 LCS060295 LCS060295 <br /> Date Prepared- 6/2/95 6/2/95 6/2/95 6/2/95 <br /> Date Analyzed 6/2/95 6/2/95 6/2/95 6/2/95 <br /> Instrument I D # GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> LCS % <br /> . Recovery 94 95 96 95 <br /> Control Limits 75-125 75-125 75-125 75-125 <br /> MS/MSD <br /> Batch # 5060123 5060123 5060123 5060123 <br /> Date Prepared 6/2/95 6/2/95 6/2/95 6/2/95 <br /> Date Analyzed, 6/2/95 6/2/95 6/2/95 6/2/95 <br /> Instrument I D # GCHP-1 GCHP-1 GCHP-1 GCHP i <br /> Matrix Spike <br /> %Recovery. 95 91 94 96 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 95 94 98 98 <br /> Relative % <br /> Difference 00 3 2 4 2 21 <br /> SE UOIA ANALYTICAL Please Note <br /> tThe 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 /> r (( ✓ i c.� validation of sample hatch results Due to matrix effects the QC limits for MS/MSD s are advisory only <br /> Linda C Schneider and are not used to accept or reject batch results <br /> Project Manager <br /> 5060120 GRW <5> <br /> t� <br />