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T <br />Weck Laboratories, Inc. <br />Environmental and Analytical Services - <br />Report Date: Thursday, April 20, 2000 <br />Received Date: Tuesday, April 04, 2000 <br />Log By: to <br />Log Time: 13:50 <br />Client: Union Pacific Rail Road - Stockton Phone: (209) 942-5358 <br />833 East 8th Street FAX: (209) 942-5276 <br />Stockton, CA 95206 <br />Attn.: Jim Gorley <br />Project:I P.O. #: Audit 706110 <br />Turnaround Time: Normal <br />Lab#: A002448-001 <br />Sampled By: Jack Dishman <br />Parameter <br />CERTIFICATE OF ANALYSIS <br />Sample ID: STKN Sludge <br />D <br />ate: 3/31/00 <br />Oil and Grease, non -polar <br />Total Releasable Hydrogen Sulfide <br />Prep. Method: EPA 3050 <br />Silver <br />Arsenic <br />Barium <br />Beryllium <br />Cadmium <br />Cobalt <br />Chromium, total <br />Copper <br />Molybdenum <br />Nickel <br />Lead <br />Antimony <br />Selenium <br />Thallium <br />Vanadium <br />Zinc <br />Prep. Method: CA T22 -WET <br />Soluble antimony on WET extract (STLC) <br />Soluble arsenic on WET extract (STLC) <br />Soluble barium on WET extract (STLC) <br />Soluble beryllium on WET extract (STLC) <br />Soluble cadmium on WET extract (STLC) <br />Soluble total chromium on WET ext.-STLC <br />Soluble copper on WET extract (STLC) <br />Soluble cobalt on WET extract (STLC) <br />Soluble lead on WET extract (STLC) <br />Soluble molybdenum on WET extract (STL <br />Soluble nickel on WET extract (STLC) <br />Soluble selenium on WET extract (STLC) <br />Result <br />Matrix: Sludge <br />Time: 13:32 <br />Dilution <br />Units Factor RL Method Analyzed Worksheet # <br />7900 mg/L 1000 5000 EPA 1664 4/3/00 sl WS13212 <br />4.00 mg/L 1 2.00 SW846 s7.3.4 4/19/00 tc WS13473 <br />ND <br />mg/kg <br />1 <br />0.10 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />ND <br />mg/kg <br />1 <br />0.50 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />4.4 <br />mg/kg <br />1 <br />1.0 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />ND <br />mg/kg <br />1 <br />0.10 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />ND <br />mg/kg <br />1 <br />0.10 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />ND <br />mg/kg <br />1 <br />0.20 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />0.71 <br />mg/kg <br />1 <br />0.50 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />6.3 <br />mg/kg <br />1 <br />0.50 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />0.53 <br />mg/kg <br />1 <br />0.20 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />ND <br />mg/kg <br />1 <br />0.50 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />1.8 <br />mg/kg <br />1 <br />0.50 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />ND <br />mg/kg <br />1 <br />0.20 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />ND <br />mg/kg <br />1 <br />0.50 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />ND <br />mg,'kg <br />1 <br />0.50 <br />EPR.- <br />4;- at <br />Y^JS131:59 <br />ND <br />mg/kg <br />1 <br />5.0 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />17 <br />mg/kg <br />1 <br />5.0 <br />EPA 6020 <br />4/5/00 at <br />WS13159 <br />ND <br />mg/L <br />1 <br />0.20 <br />EPA 6020 <br />4/14/00 at <br />WS13316 <br />ND <br />mg/L <br />1 <br />0.05 <br />EPA 6020 <br />4/14/00 at <br />WS13316 <br />0.81 <br />mg/L <br />1 <br />0.05 <br />EPA 6020 <br />4/14/00 at <br />WS13316 <br />ND <br />mg/L <br />1 <br />0.05 <br />EPA 6020 <br />4/14/00 at <br />WS13316 <br />ND <br />mg/L <br />1 <br />0.02 <br />EPA 6020 <br />4/14/00 at <br />WS13316 <br />0.12 <br />mg/L <br />1 <br />0.10 <br />EPA 6020 <br />4/14/00 at <br />WS13316 <br />0.66 <br />mg/L <br />1 <br />0.20 <br />EPA 6020 <br />4/14/00 at <br />WS13316 <br />ND <br />mg/L <br />1 <br />0.05 <br />EPA 6020 <br />4/14/00 at <br />WS13316 <br />0.48 <br />mg/L <br />1 <br />0.30 <br />EPA 6020 <br />4/14/00 at <br />WS13316 <br />ND <br />mg/L <br />1 <br />0.10 <br />EPA 6020 <br />4/14/00 at <br />WS13316 <br />ND <br />mg/L <br />1 <br />0.05 <br />EPA 6020 <br />4/14/00 at <br />WS13316 <br />ND <br />mg/L <br />1 <br />0.20 <br />EPA 6020 <br />4/14/00 at <br />WS13316 <br />Lab#: A002448 <br />14859 East Clark Avenue, City of Industry, California 91745-1396 <br />www.wecklabs.com <br />(626) 336-2139 FAX (626) 336-2634 <br />Page 1 of 2 <br />