Charles A Cravotta, III, PhD, PG
Charles "Chuck" Cravotta is a research hydrologist whose projects focus on geochemical and hydrological processes that control water quality, particularly the sources, transport, and attenuation of metals and nutrients in undisturbed and mining-impacted watersheds and aquifers. Results apply to scientific and regulatory programs for the prevention and remediation of aquatic contamination.
Biography
Education
1979 B.A. Environmental Sciences, University of Virginia
1980-82 Continuing education, George Mason University
1986 M.S. Geochemistry and Mineralogy, Pennsylvania State University
1996 Ph.D. Geochemistry and Mineralogy, Pennsylvania State University
Professional Assignments
1987-present: Research Hydrologist, USGS, Pennsylvania Water Science Center, New Cumberland, Pennsylvania
1986-1987: Geochemist, IT Corporation, Monroeville, Pennsylvania
1982-1986: Graduate Teaching and Research Assistant, Geosciences Department, Pennsylvania State University, University Park, Pennsylvania
1979-1982: Geologist, Office of Scientific Publications, Geologic Division, USGS, Reston, Virginia
1979: Geologic Technician, Virginia State Water Control Board, Alexandria, Virginia
Professional Affiliations and Certification
2018-present: Adjunct Instructor, Earth and Environmental Sciences, University of Pittsburgh
2011-2016: Associate Editor, Mine Water and the Environment Journal, International Mine Water Association
2001-2005: Adjunct Assistant Professor of Environmental Engineering, Pennsylvania State University, Harrisburg, Pennsylvania
1995-present: Registered Professional Geologist in Pennsylvania PG-002255-G
Awards and Recognition
The Society for Organic Petrology Dalaway J. Swain Award “Best Refereed Paper”, 2016
Department of Interior Partners in Conservation Award (AMDTreat Development Team), 2013
Top 50 Most-Cited Papers in "Applied Geochemistry" (2006-2011)
Department of Interior Superior Service Award, 2005
Schuylkill County Conservation Professional of the Year Award, 2003
Department of Interior Honor Award, 2000
Pennsylvania Department of Environmental Protection Award for Excellence, 1999
External Research Database
Science and Products
Dissolved metals and associated constituents in abandoned coal-mine discharges, Pennsylvania, USA. Part 2: Geochemical controls on constituent concentrations
Water-quality data for discharges from 140 abandoned mines in the Anthracite and Bituminous Coalfields of Pennsylvania reveal complex relations among the pH and dissolved solute concentrations that can be explained with geochemical equilibrium models. Observed values of pH ranged from 2.7 to 7.3 in the coal-mine discharges (CMD). Generally, flow...
Cravotta, C.A.Downflow limestone beds for treatment of net-acidic, oxic, iron-laden drainage from a flooded Anthracite Mine, Pennsylvania, USA: 1. Field evaluation
Passive-treatment systems that route acidic mine drainage (AMD) through crushed limestone and/or organic-rich substrates have been used to remove the acidity and metals from various AMD sources, with a wide range of effects. This study evaluates treatment of net-acidic, oxic, iron-laden AMD with limestone alone, and with organic-rich compost...
Cravotta, C.A.; Ward, S.J.Downflow limestone beds for treatment of net-acidic, oxic, iron-laden drainage from a flooded anthracite mine, Pennsylvania, USA: 2. Laboratory evaluation
Acidic mine drainage (AMD) containing elevated concentrations of dissolved iron and other metals can be neutralized to varying degrees by reactions with limestone in passive treatment systems. We evaluated the chemical and mineralogical characteristics and the effectiveness of calcitic and dolomitic limestone for the neutralization of net-acidic,...
Cravotta, C.A.; Ward, S.J.; Hammarstrom, J.M.Laboratory and field evaluation of a flushable oxic limestone drain for treatment of net-acidic drainage from a flooded anthracite mine, Pennsylvania, USA
This paper demonstrates the use of dissolution-rate data obtained in the laboratory to indicate the potential quality of effluent from a field-scale oxic limestone drain (OLD) treatment system for neutralization of dilute acidic mine drainage (AMD). Effluent from the Reevesdale Mine South Dip Tunnel, a large source of AMD and base flow to the...
Cravotta, C.A.Effects of Historical Coal Mining and Drainage from Abandoned Mines on Streamflow and Water Quality in Newport and Nanticoke Creeks, Luzerne County, Pennsylvania, 1999-2000
This report characterizes the effects of historical mining and abandoned mine drainage (AMD) on streamflow and water quality and evaluates potential strategies for AMD abatement in the 14-square-mile Newport Creek Basin and 7.6-square-mile Nanticoke Creek Basin. Both basins are mostly within the Northern Anthracite Coal Field and drain to the...
Chaplin, Jeffrey J.; Cravotta, Charles A.; Weitzel, Jeffrey B.; Klemow, Kenneth M.Passive aerobic treatment of net-alkaline, iron-laden drainage from a flooded underground anthracite mine, Pennsylvania, USA
This report evaluates the results of a continuous 4.5-day laboratory aeration experiment and the first year of passive, aerobic treatment of abandoned mine drainage (AMD) from a typical flooded underground anthracite mine in eastern Pennsylvania, USA. During 1991-2006, the AMD source, locally known as the Otto Discharge, had flows from 20 to 270 L...
Cravotta, C.A.Relations among pH, sulfate, and metals concentrations in anthracite and bituminous coal-mine discharges, Pennsylvania
Water-quality data for discharges from 140 abandoned mines in the Bituminous and Anthracite Coalfields of Pennsylvania illustrate relations among pH, sulfate, and dissolved metal concentrations. The pH for the 140 samples ranged from 2.7 to 7.3, with two modes at pH 2.5 to 4 (acidic) and 6 to 7 (near neutral). Generally, flow rates were smaller...
Cravotta, III, Charles A.Assessment of characteristics and remedial alternatives for abandoned mine drainage : case study at Staple Bend Tunnel unit of Allegheny Portage Railroad National Historic Site, Cambria County, Pennsylvania, 2004
This report describes field, laboratory, and computational methods that could be used to assess remedial strategies for abandoned mine drainage (AMD). During April-June, 2004, the assessment process was applied to AMD from bituminous coal deposits at a test site in the Staple Bend Tunnel Unit of Allegheny Portage Railroad National Historic Site (...
Cravotta, Charles A.Acid-rock drainage at Skytop, Centre County, Pennsylvania, 2004
Recent construction for Interstate Highway 99 (I?99) exposed pyrite and associated Zn-Pb sulfide minerals beneath a >10-m thick gossan to oxidative weathering along a 40-60-m deep roadcut through a 270-m long section of the Ordovician Bald Eagle Formation at Skytop, near State College, Centre County, Pennsylvania. Nearby Zn-Pb deposits hosted...
Hammarstrom, Jane M.; Brady, Keith; Cravotta, Charles A.Implications of ground water chemistry and flow patterns for earthquake studies
Ground water can facilitate earthquake development and respond physically and chemically to tectonism. Thus, an understanding of ground water circulation in seismically active regions is important for earthquake prediction. To investigate the roles of ground water in the development and prediction of earthquakes, geological and hydrogeological...
Guangcai, W.; Zuochen, Z.; Min, W.; Cravotta, C.A.; Chenglong, L.Net alkalinity and net acidity 1: Theoretical considerations
Net acidity and net alkalinity are widely used, poorly defined, and commonly misunderstood parameters for the characterization of mine drainage. The authors explain theoretical expressions of 3 types of alkalinity (caustic, phenolphthalein, and total) and acidity (mineral, CO2, and total). Except for rarely-invoked negative alkalinity,...
Kirby, C.S.; Cravotta, C.A.Net alkalinity and net acidity 2: Practical considerations
The pH, alkalinity, and acidity of mine drainage and associated waters can be misinterpreted because of the chemical instability of samples and possible misunderstandings of standard analytical method results. Synthetic and field samples of mine drainage having various initial pH values and concentrations of dissolved metals and alkalinity were...
Kirby, C.S.; Cravotta, C.A.