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W11 L <br />Weck Laboratories, Inc. <br />Environmental and Analytical Services - Since 1964 <br />Client: Union Pacific Rail Road <br />- Sto kton <br />QC Report Date: <br />Thursday, April 20, 2000 <br />Project Name: <br />4/14/00 <br />Auble metals on stic (WET) by ICP -MS <br />Project #: <br />QUALITY CONTROL REPORT <br />Amt. <br />01 RPD <br />Sample <br />QC <br />Added/ <br />True <br />for Low High <br />%R or 9 <br />QC Lab# <br />TestGroup <br />Para eter <br />Result <br />Result <br />Units <br />Value <br />RPD MSD Limit Limit <br />Method Blank <br />6020_stic <br />Solub a cobalt on WET extract (STLC) <br />0.00 <br />mg/L <br />Method Blank <br />6020_stic <br />Solub e copper on WET extract (STLC) <br />0.00 <br />mg/L <br />Method Blank <br />6020_stic <br />Solub e lead on WET extract (STLC) <br />0.00 <br />mg/L <br />Method Blank <br />6020_stic <br />Solub e molybdenum on WET extract (STLC) <br />0.00 <br />mg/L <br />Method Blank <br />6020_stic <br />Solub nickel on WET extract (STLC) <br />0.00 <br />mg/L <br />Method Blank <br />6020_stic <br />Solubl selenium on WET extract (STLC) <br />0.00 <br />mg/L <br />Method Blank <br />6020_stic <br />Solubl silver on WET extract (STLC) <br />0.00 <br />mg/L <br />Method Blank <br />6020_stic <br />Solubl thallium on WET extract (STLC) <br />0.00 <br />mg/L <br />Method Blank <br />6020 stic <br />Solubl total chromium on WET ext.-STLC <br />0.00 <br />mg/L <br />Method Blank <br />6020_stic <br />Solubl zinc on WET extract (STLC) <br />0.00 <br />mg/L <br />Method Blank <br />6020_stic <br />Solute vanadium on WET extract (STLC) <br />0.00 <br />mg/L <br />QCS <br />6020_stic <br />Solubl antimony on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />96 <br />QCS <br />6020_stic <br />Solubl arsenic on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />94 <br />QCS <br />6020_stic <br />Solubl barium on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />98 <br />QCS <br />6020_stic <br />Solubl beryllium on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />96 <br />QCS <br />6020_stic <br />Solubl cadmium on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />102 <br />QCS <br />6020_stic <br />Solubl cobalt on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />96 <br />QCS <br />6020_stic <br />Solubl copper on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />96 <br />QCS <br />6020_stic <br />Solubl lead on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />100 <br />QCS <br />6020_stic <br />Solubl molybdenum on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />98 <br />QCS <br />6020_stic <br />Solubl nickel on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />92 <br />QCS <br />6020_stic <br />Solubl selenium on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />94 <br />QCS <br />6020_stic <br />Soluble silver on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />98 <br />QCS <br />6020_stic <br />Soluble thallium on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />102 <br />QCS <br />6020_stic <br />Soluble total chromium on WET ext.-STLC <br />0.05 <br />mg/L <br />0.05 <br />98 <br />QCS <br />6020_stic <br />Soluble zinc on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />94 <br />QCS <br />6020_stic <br />Solule anadium on WET extract (STLC) <br />0.05 <br />mg/L <br />0.05 <br />96 <br />Worksheet #: <br />WS13316 <br />WS13316 <br />WS13316 <br />WS13316 <br />Note: <br />ND = Not Detected <br />BL = Blank <br />Lab#: <br />A002447-001 <br />A002448-001 <br />A002570-001 <br />A002577-001 <br />3st Name Analyzed Date <br />Auble metals on stic (WET) by ICP -MS <br />4/14/00 <br />)luble metals on stic (WET) by ICP -MS <br />4/14/00 <br />Auble metals on stic (WET) by ICP -MS <br />4/14/00 <br />Auble metals on stic (WET) by ICP -MS <br />4/14/00 <br />MS = Matrix Spike MSD = Matrix Spike Duplicate SURR = Surrogate <br />DUP = Duplicate RPD = Relative Percent Deviation LCS = Laboratory Control Standard <br />Page 11 of 15 <br />14859 East Clark Avenue, City f Industry, California 91745-1396 (626) 336-2139 FAX (626) 336-2634 <br />www.wecklabs.com <br />