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i <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 FAX (415)364 9233 <br /> S� {f`/d. ,.t, ,.• h ',.rl <br /> Waterwork Client Project ID #322,J 8 Terminal Tracy <br /> 1710 Main Street <br /> Escalon,CA 95320 <br /> PAttention Nora Kataoka OC Sample Groep 0103648-0103652 Reported Nov 12 1990 <br /> ^i^� �xr�+:'�.,. `'�'^�Noz'a-���<�'i F Y* � ..> b��F^S < .+ ' ' MSx"� 3'�c�+��i� Aa jt«.t:��+s'�:�•C'rr"*� �3��� ,�ftiY+.x''�"RwF+*+wY'�rzr^�'"'3�:;��\� a',r���"4a'�a <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene mo Xylenes <br /> Benzene <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst t.G LG LG LG <br /> Reporting Units no ng ng 119 <br /> Date Analyzed Nov 6, 1990 Nov 6. 19W Nov 6 1490 Nov S. 1990 <br /> OC Sample # 010-3977 010-3977 010-3977 010-3977 <br /> Sample Conc : N D 40 65 80 <br /> Spike Conc. <br /> Added: 100 t00 100 300 <br /> Corte. Matrix <br /> Spike: 130 120 it0 340 <br /> Matrix Spike <br /> %Recovery: 130 110 110 110 <br /> Conc. Matrix <br /> Spike Dup : 130 120 110 320 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery 130 110 100 110 <br /> Relative <br /> %Difference, 16 00 73 73 <br /> SEQUOIA ANALYTI AL Recovery Conc of M 5 -Conc of Sample x 100 <br /> Spike Cone Added <br /> lative%01119ience Conc of M S,-Conc of M S D x 100 <br /> al3etfl W H a c k I (Conc of M S + Conc of M S D)12 <br /> P oJect Manager <br /> 103648 WAT <2> <br />