Laserfiche WebLink
SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 a FAX (415) 364-9233 <br /> Blaine Tech Services, Inc Client Project ID Shell, 141 N El Dorado, Stockton <br /> 985 Timothy Drive Matrix Water <br /> San Jose, CA 95133 <br /> Attention Jim Keller OC Sample Group 3HE8101-10 Reported Sep 7, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xyienes <br /> Method' EPA 8020 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 u9/L N9/L u9/L <br /> LCS Batch# SLK090193 SLK090193 BLK090193 BLK090193 <br /> Date Prepared - - - - <br /> Date Analyzed 9/1/93 9/1/93 9/1/93 9/1/93 <br /> Instrument I D # GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> LCS % <br /> Recovery 100 100 100 103 <br /> Control Limits 80-120 80-120 80-120 80-120 <br /> MS/MSD <br /> Batch # 3HE3402 3HE3402 3HE3402 3HE3402 <br /> Date Prepared - - - <br /> Date Analyzed 9/1/93 9/1/93 9/1/93 9/1/93 <br /> Instrument I.D.# GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Matrix Spike <br /> %Recovery 97 97 98 97 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery- 110 100 110 107 <br /> Relative % <br /> Difference: 13 30 12 98 <br /> SEWPIA 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 /> j validation of sample batch results Due to matrix effects the CC limits for MS/MSD s are advisory only <br /> J sed to accept or reject batch results <br /> Peggy/A P <br /> Project n er 3HE8101 BLA <4> <br />