Program
All Presentations (pdf)

Monday
8:15 Brent Means
10:10 James J. Gusek
12:40 Jonathan M. Dietz
2:15 Kimberly R. Weaver
4:00 Brent Means

Tuesday
8:45 Robert Kleinmann
9:15 Brent Means
9:30 James J. Gusek
10:00 Glenn C. Miller
10:30 Linda Ann Figueroa
12:40 Art Rose
1:10 Charles A. Cravotta III
1:40 Danielle M C Huminicki
2:50 Bernard Aube
3:20 Timothy K. Tsukamoto
3:50 Bradley R. Shultz
4:20 Kimberly R. Weaver

Wednesday
8:00 Linda Ann Figueroa
8:30 John Senko
9:00 Song Jin
10:10 Jonathan M. Dietz
10:40 Daryle H. Fish
12:40 John Chermak
1:10 Griff Wyatt
1:40 Dan Mueller
2:50 Sean C. Muller
3:20 Jack Adams
3:50 Roger Bason
3:50 Mark B. Carew

Thursday
8:00 Rep. John E. Peterson
8:30 Scott Sibley
9:00 Charles A. Cravotta III
9:30 Michael R. Silsbee
10:30 Lykourgos Iordanidis
11:00 Mark Conedera
11:30 Barry Scheetz
1:25 William Benusa
1:55 Mike Sawayda
2:25 Susan J. Tewalt
3:25 Robert S. Hedin
3:55 Chad J. Penn
4:25 Ron Neufeld

North Potato Creek In-Pit Water Treatment Plant at the Copper Basin Mining Site

Author(s)

Griff Wyatt, P.E.
Barge Waggoner Sumner & Cannon, Inc.
211 Commerce Street, Suite 600
Nashville, TN 37201
615-252-4356
egwyatt@bwsc.net

Franklin Miller, P.E.
Glenn Springs Holdings, Inc.
2480 Fortune Drive, Suite 300
Lexington, KY 40509
859-543-2154
Franklin_miller@oxy.com

John Chermak, Ph.D.
Virginia Tech University
4044 Derring Hall, Department of Geosciences
Blacksburg, VA 24061
540-231-1785
jchermak@vt.edu

Abstract

To protect the Ocoee River from acidity and metals loadings from historical copper mining activities, OXY USA is conducting removal actions to alleviate contaminant discharges from North Potato Creek (NPC). One such action is construction of an innovative in-pit lime treatment facility at the South Mine Pit (SMP) designed to treat variable NPC flows ranging from dry weather flows of 9 cfs to a 10-yr, 24-hr storm of 972 cfs for 15% of the cost of a conventional lime treatment plant. The treatment facility utilizes high dissolved solids water from the lower portion of the stratified SMP as seed water to enhance flocculation of iron precipitates and the large surface area of the SMP as a settling basin. The in-pit lime treatment facility operates in the following manner. A portion of the flow is pumped from NPC to a rapid mix tank (RMT) where lime slurry, air, and high dissolved solids water from the pit are added. The RMT discharge flows back into NPC where it mixes with the remainder of the NPC water and ultimately discharges into the 20 acre SMP. The SMP provides an effective settling basin for the precipitated solids from the NPC flow. The in-pit plant operations began in January 2005 and early results show that reductions in dissolved metals loading of 650 lbs per day to the Ocoee River are being achieved.

Presentation

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