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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94M <br /> (415) 364-9600 • FAX(415) 364-9233 <br /> ------------ <br /> \ 'a tea. : \W w. <br /> Waterwork Client Project ID #376 <br /> 1710 Main Street <br /> E�e��o <br /> iCA 95320 s <br /> ina LePa,e CC Sample Group: 108430&10 Reported: Aug 27. 1991 rt <br /> OUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene benzene X eves J <br /> Method: EPA 8024 EPA 8020 FPA 8024 EPA 8420 <br /> AnalySt: L LmMMIan L LmIdnman L LmkhW= L Lalldrtman <br /> Reporting Units- Pg/t Pg/t Malt Ma/L <br /> Date Analyzed: Aug 23, 1991 Aug 23, 1991 Aug 23, 1991 Aug 23, 1991 <br /> CC Sample#. GBUCX=91 GBLK082391 GBLK082391 GBLK0=91 <br /> Sample Conc.: N D. N.D. N.D N D <br /> pike Conc. <br /> Added: 10 10 10 30 <br /> Conc. Matrix <br /> Spike: 11 11 10 32 <br /> Matrix Spike <br /> %Recovery: 110 110 100 110 <br /> Conc. Matrix <br /> Spike Dup.: 11 11 10 32 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery: 110 110 100 110 <br /> Relative <br /> %Difference: 0 0 0 0 0 0 00 <br /> OUPIA ANALYTICAL %Pacovery, Conc of M S -Conc of Sample x 100{ <br /> Spike Cane.Added <br /> faeladve 7i Werence Conc of M.S.-Conc of M S.a X100 <br /> EI beth W 1-IaCid Conc.of M S. + Conc of M S D 2 <br /> P 0ject Manager 1084308 WAT <2> <br />