Laserfiche WebLink
SEQUOIA ANALYTICAL <br /> ' 680 Chesapeake Drive • Redwood City, CA 94063 <br /> a (415) 364-9600 • FAX(415) 364-9233 <br /> Blame Tech Services, Inc Client Project ID Shell, 6131 Pacific Ave, Stockton <br /> 985 Timothy Drive Matrix Water <br /> San Jose, CA 95133 <br /> Attention Jim Keller CC Sample Group 3KE5401-06 Reported Dec 6, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method EPA 8020 EPA 8020 EPA W20 EPA 8020 <br /> Analyst._ A Miraftab A Miraftab A Miraftab A Miraftab <br /> MS/MSD <br /> Batch#, 3KF4101 3KF4101 3KF4101 3KF4101 <br /> Date Prepared - - <br /> Date Analyzes , 12/1/93 12/1/93 12/1/93 12/1/93 <br /> Instrument I D.# GCHP-3 GCHP-3 GCHP-3 GCHP-3 <br /> Conc. Spiked: 10pg/L 10ug/L 10Yg/L 30,ug/L <br /> Matrix Spike <br /> % Recovery 100 100 100 107 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 110 110 110 107 <br /> Relative% <br /> Difference 95 95 95 00 <br /> LCS Batch# - - - <br /> Date Prepared: <br /> Date Analyzed <br /> Instrument I D # - <br /> LCS % <br /> Rprrivarv- - - <br /> ___-_ y <br /> % ecovery <br /> Control Limits 55-145 47-149 47-155 56-140 <br /> Please Note <br /> The LCS is a control sample of known interferent free matrix that is analyzed using the same reagents <br />�SE 00W ANALYTICAL preparation and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> { fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <br /> ' the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> � f/. interference the LCS recovery is to be used to validate the batch <br /> eggy A Penner <br /> Project Manager 3KE5401 BLA <4> <br />