Laserfiche WebLink
SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 • FAX (415) 364-9233 <br /> k <br /> Blaine Tech Services, Inc Client Project ID Shell, 141 N EI Dorado <br /> 985 Timothy Drive Matrix Water <br /> San Jose, CA 95133 <br /> Attention Jim Keller OC Sample Group 3EC3301-09 Reported Jun 4, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method: EPA 8024 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: M Nipp M Nipp M Nipp M Nipp <br /> Conc. Spiked: 10 10 10 30 <br /> Units: ug/L ug/L N8/L ug/L <br /> LCS Batch#: BLK060293 BLK060293 BLK060293 BLK060293 <br /> Date Prepared: N/A N/A N/A N/A <br /> Date Analyzed: 6/2/93 6/2/93 6/2/93 6/2/93 <br /> Instrument I D #: GCHP-3 GCHP-3 GCHP-3 GCHP-3 <br /> 40 LCS % <br /> Recovery: 85 85 83 87 <br /> Control urnits: 80-120 80-120 80-120 80.120 <br /> MS/MSD <br /> Batch# 3EB7602 3ES7602 3EB7602 3EH7602 <br /> Date Prepared. N/A N/A N/A N/A <br /> Date Analyzed: 6/2/93 6/2/93 6/2/93 6/2/93 <br /> Instrument I D.#- GCHP-3 GCHP-3 GCHP-3 GCHP-3 <br /> Matrix Spike <br /> % Recovery- 83 82 81 80 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 96 95 96 97 <br /> Relative% <br /> Difference- 15 15 17 19 <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 /> V ! preparation and analytical methods employed for the samples The LCS%recovsry 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 /> Agd-are not used to accept or reject batch results <br /> ar , <br /> x Pr an er 3EC3301 BLA <4> <br />