Environmental Protection Agency
National Service Center for Environmental Publications
P.O. Box 42419
Cincinnati, OH 45242
Official Business
Penalty for Private Use
$300
EPA 625/F-00/OQ1
PRESORTED STANDARD
POSTAGE & FEES PAID
EPA
PERMIT No. G-35
Agenda and Registration Information Included
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April 4-6, 2000
Sands Reg%rr^| Casmo Hotel
pbWrtto^iiISehd, Nevada
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Objectives of Workshop
The purpose of this workshop is to provide a
forum for the exchange of scientific informa-
tion on current approaches for assessing the
characterization, monitoring, treatment and/
or remediation of impacts on aquatic ecosys-
tems including pit lakes from mining-related
contamination in the Western U.S.
The specific objectives are to provide:
Characterization and assessment of the pit
lakes problem in the U.S. and the environ-
mental risks posed from historical, current
and future perspectives
« Reviewing the state-of-the-practice in
modeling, how correctly models.predict
field conditions, and their use in regulatory
and environmental decision-making
Discussion of pit lake remediation tech-'
nologies, case studies, and an assessment
of future research needs
Impacts of mining activities on ecosystems
and possible activities for habitat restora-
tion
Who Should Attend
Engineers, scientists, regulatory personnel,
and public and private sector decision-makers
interested in the characterization, modeling,
remediation and monitoring of mining-impacted
pit lakes.
Organizing Committee
Steve Anderson, Montana Tech of The Univer-
sity of Montana, Mine Waste Technology Pro-
gram
Ed Bates. US EPA
Karl Burgher, Montana Tech of The University
of Montana, Mine Waste Technology Program
Andy Davis, Seomega
Leo Drozdoff, Nevada Division of Environmen-
tal Protection
Doug Grosse, US EPA
Mary Ann Harrington-Baker, MSE-Technology
Applications Inc., Mine Waste Technology
Program
George Huffman, US EPA
Glenn Miller, University of Nevada, Reno,
Center for Environmental Science and Engi-
neering
John McCready, US EPA
Lisa Shevenell, Nevada Bureau of Mines and
Geology
Dirk Van Zyl, University of Nevada, Reno,
Mining Life-Cycle Center
Roger Wilmoth, US EPA
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Program
Tuesday April 4, 2000 p_
7:30 AM Registration
8:15 AM Welcome Remarks
8:30 AM Session 1: Setting the Stage
Introduction to Workshop - Dirk van Zyl, Mining Life-
Cycle Center, UNR, Reno, Nevada
Pit Lakes: Past, Present and Future - Andy Davis,
Geomega, Boulder, Colorado
Water Quality Characterization of Current and
Historical Pit Lakes in Nevada - Lisa Shevenell,
Nevada Bureau of Mines and Geology, UNR, Reno,
Nevada, Katherine A. Connors, WMC Exploration,
Englewood, Colorado, Christopher D. Henry, Nevada
Bureau of Mines and Geology, UNR, Reno, Nevada
10:00 AM Break
10:30 AM Session 2: Characterization
Berkeley Pit Lake From Top to Bottom - Steve
Anderson and Karl Burgher, Mine Waste Technology
Program, Montana Tech, Butte, Montana
Determination and Characterization of Organic
Carbon in the Water and Sediment of the Berkley Pit
Lake, Buttey MbWaW- 00z/<7/^r^e^
Willett, Chemistry and Geochemistry Department,
Montana Tech, Butte, Montana
Characterization of the Lady Bryan Pit Lake, <5olden
Eagle Mine, Nevada - Daniel J. Davis, Broadbent <&
Associates, Reno, Nevada
Hydrogeochemical Characterization of the West Pit
Lake at the Manhattan Mine, Nye County, Nevada -
Mark loli. Round Mountain Gold Company, Round
Mountain, Nevada, Chris Benedict and Dennis
Jamison, HIS Geo Trans, Reno, Nevada
12:00 PM Lunch
1:30 PM Session 3: Characterization and
Geochemical Modeling
Chemistry of Particulates and Colloids in Dexter Pit
Lake, Elko Co, Nevada, USA - Lisa L. Stillings, US
Geological Survey, Reno, Nevada, Laurie 5. Balistrieri,
US Geological Survey, Seattle, Washington, Regina N.
Tempel and Maggy F. Lengke, Department of Geologi-
cal Sciences, UNR, Reno, Nevada, Lisa A. Shevenell,
Nevada Bureau of Mines and Geology, Reno, Nevada
Predicting Water Quality in Pit Lakes: A Case Study of
Dexter Pit Lake, Tuscarora, Nevada - Laurie 5.
Balistrieri, US Geological Survey, Seattle, Washington,
Regina N. Tempel, Department of Geological Sciences,
UNR, Reno, Nevada, LisaL. Stillings, US Geological
Survey, Reno, Nevada, Lisa A. Shevenell, Nevada
Bureau of Mines and Geology, Reno, Nevada, Maggy F.
Lengke, Department of Geological Sciences, UNR, Reno,
Nevada
Predicting As Concentrations in a Mine Pit Lake:
Getchell North Pit Lake - Regina Tempel, Department
of Geological Sciences, UNR, Reno, Nevada
£eochemical Model of the Arimetco Pit Lake,
Yerington, Nevada - Rondald' L. Hershey, Desert
Research Institute, Reno, Nevada, Charalambos
Papelis, Desert Research Insititue, Las Vegas, Ne-
vada, Glenn C. Miller, University of Nevada, Reno,
Nevada
3:15 PM Break
3:30 PM Session 4: Other Seochemical Issues
The Importance of the Carbon System in Pit Lake
Chemistry - Andy Davis and George Fennemore,
Geomega, Boulder, Colorado
eeocheji\icaLContrpJs,pn^^^Transuranic.ifln.d RaKe.Ear±h,,;r
Elements in Pit Lakes - George Fennemore, Julie
VanMiddlesworth and Andy Davis, Geomega, Boulder,
Colorado
Coprecipitation Reactions - Verification of Computa-
tional Methods in Seochemical Models - John J.
Mahoney, Hydrologic Consultants Inc, Lakewood,
Colorado
Assessing the Impacts of Waste-Rock Backfill on
Pit-Lake Water Quality - David Atkins and Houston
Kempton, Exponent, Boulder, Colorado
Wednesday April 5, 2000
8:30 AM Session 5: Hydrogeological Issues
Historical Overview and Evaluation of Predicitive
Methods of Pit Infilling - DavidE Hay, Vladimir
Straskraba, Scott A. Effner, TRC Hydro-Geo Consult-
ants, Littleton, Colorado
Modeled vs Observed Filling Rates at Three Histori-
cal Pit Lakes, Setchell Mine, Nevada - Lisa Shevenell,
Nevada Bureau of Mines and Geology, Reno, Nevada,'
Kevin I, Pasternak, Tetra Tech Inc, Denver, Colorado
TBA - Pit inf low/dewatering
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&EPA
Workshop Registration Form
Workshop on the Characterization, Modeling, Remediation,
<& Monitoring of Mining-Impacted Pit Lakes
Seating is Limited. Please Register Early.
There is no registration fee for this workshop.
Workshop Registration Due Date: Monday, March 13, 2000
You may also mail or fax this form to:
SAIC, attn: Lisa Enderle
1710 Goodridge Drive, T3-3-1
McLean, VA 22102
FAX: (703) 676-7945
Name
Title
Organization
JBtcget Address
City
State
Zip
Phone
E-mail
hax
For more information regarding the Workshop please call (7O3) 676-7967.
Hotel Information
The workshop will be held at:
Sands Regency Casino Hotel (Downtown Reno)
345 North Arlington Avenue
Reno, NV 89501
There are a limited number of rooms available at the rate of $50.00 plus tax.
Please call the Sands Regency Casino Hotel directly at 1-800-648-3553 and be sure to
reference the "EPA Pit Lakes Workshop" when making your reservations.
These rates will not be extended beyond March 13, 2000. After that date, reservations
will be on a space-available basis.
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