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j SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 FAX(415) 364-9233 <br /> ' •Yn~rJ }}'fi-5!'^h S� �J2wa�Ji,.w �,.{��<y .� Fv.. ••^+ {fin vL r}nytin ti;ftsv+.wt w�nxf n\� �$nk.G� �..S..rJ� �..L���uv4r l4 Sy}r4rdtiro}'<X$v$ 'n r +vi=vN 9 .WQrri]�[7.4.:'*+rte <br /> v`3. v.�«.'�r'S,d.Y :Fc.kwr mac.♦ r ark <br /> jVl ierwork }Client Project ID xW0475, Weber Point <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> ' Attention Tina Le Page A!r r, v r v �QC Sample Group 2040283-4 n M1 v Reported Apr 8, 1992 <br /> vn rY�C.y}Wrvr�id�A vrv�w}vim w'V nr h4wr i� i Sr }S �.b4�r tiA.i v !r r. �[r4i. ^�itirn$4iv 'yr S Si-."ix�v <br /> �xaw 2...a...,..wrx,•s.w. t,.�+wk>iLY <br /> QUALITY CONTROL DATA REPORT <br /> ' ANALYTE Ethyl- <br /> Benzene Toluene benzene Xylenes <br /> ' Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst M Nipp M Nipp M Nipp M Nipp <br /> Reporting Units erg/L jig/L pg/L Ng/L <br /> ' Date Analyzed Apr 3, 1992 Apr 3, 1992 Apr 3, 1992 Apr 3, 1992 <br /> OC Sample# GBLK040392 GBLK040392 GBLK040392 GBLK040392 <br /> ' Sample Conc. N D N D N D N D <br /> Spike Conc. <br /> Added: 10 10 10 30 <br /> Conc. Matrizs <br /> Spike: 11 11 11 33 <br /> ' Matrix Spike <br /> % Recovery: 110 110 110 110 <br /> Conc. Matrix <br /> Spike Dup . 10 10 10 30 <br /> ' Matrix Spike <br /> Duplicate <br /> % Recovery 100 100 100 100 <br /> 1 <br /> Relative <br /> ' % Difference: 95 95 95 95 <br /> SEQUOIA ANALYTI AL %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> v�V/}I//�t Relative%Difference Conc of M S -Conc of M S D u 100 <br /> r1 Lee a (Conc of M S + Conc of M S D) 2 <br /> rolect Manager 2040283 WAT <5> <br /> 1 <br />