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l< SEQUOIA ANALYTICAL <br /> 680 Chesaaeake Drive • Redwood City, CA 94063 <br /> ' (415) 364-9600 FAX(415) 364-9233 <br /> +k"c"'�'�` r��.lff fr/l/lJfl r o+1.4^77'• 'i 7''w� ••9`> r�7'^? +94.`i r+ r <br /> /.r r.,cti r r+.,w.Cnw.rsa ?'a•" ^ G, `� `/ _.}A` ,.,,,,..,,.:.r '!J!y"i icitrYir/l a`�viii'.wrr?of „y <br /> Blaine Tech Services, knc Client Project iD Shell,+6131 Pacific Avenue + <br /> 965 Timothy Drive Matra Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller CC Sample Group 4BA1502-04 Reported Feb 24, 1994 <br /> 4 rS rr r F + <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD <br /> Batch#- G489SM7 G41396607 G4B966O7 G48-96W7 <br /> Date Prepared: N/A N/A N/A N/A <br /> Date Analyzed 2/19/94 2/19/94 2/19/94 2/19/94 <br /> Instrument LD #: GCHP-03 GCHP-03 GCHP-03 GCHP-03 <br /> Conc. Spiked: 10ug/L 10Ng/L 10ftg/L 30pg/L <br /> Matrix Spike <br /> % Recovery- 130 130 130 127 <br /> Matruc Spike <br /> Duplicate% <br /> Recovery- 120 120 120 120 <br /> Relative% <br /> Difference- so 80 80 57 <br /> LCS Batch#: GBLK021994 GBLK021994 GBLK021994 GBLK021994 <br /> I <br /> Date Prepared: - - - - <br /> Date Analyzed: 2/19/94 2/19/94 2/19/94 2/19/94 <br /> Instrument I.D.#- GCHP-03 GCHP-03 GCHP-03 GCHP-03 <br /> LCS% <br /> Recovery- 120 120 120 12n <br /> % ecovery <br /> Control Llmrts: 71-133 72-128 72-130 71-120 <br /> Please Note <br /> The LCS is a control sample of known,interferent free matnx that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br />*W <br /> r fortified with known quantities of speatic compounds and subjected to the entire analytical procedure If <br /> the recovery of analytes from the matrix spike does not fall within specified control limns due to matrix <br /> interference the LCS recovery is to be used to validate the batch <br /> Suzanne Chin <br /> Project Manager 4BA1501 BLA <3;p- <br />