“Environmental Geochemistry of Metals: Investigation and Remediation” is a three-day course offered by the National Ground Water Association (NGWA) that will be co-instructed by DBS&A hydrogeologist, Christopher Wolf, P.G., and Department of Energy Oversight Bureau, New Mexico Environment Department’s Patrick Longmire, Ph.D., on March 21-23, 2016, in Dallas, Texas.
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More information on the course is below and on NGWA's website.
This three-day short course provides practical information needed to effectively evaluate intrinsic remediation and chemical manipulation of sites contaminated with metals, nonmetals, and radionuclides, which may be found in the soil and groundwater at many mining, industrial, and utility sites in the United States and elsewhere.
Remediation by natural attenuation, also known as intrinsic remediation, is a viable approach for reducing the risk associated with metal/inorganic solute plumes in groundwater. Chemical manipulation of aquifer material and groundwater is also being implemented at some sites to immobilize contaminants including arsenic, barium, chromium, lead, technetium, and uranium. Regulatory agencies support risk-based approaches to remediation including intrinsic and applied remediation methods for metal/inorganic contaminants.
As part of the remediation design process, appropriate site characterization must be conducted to evaluate contaminant fate and transport as well as the impact of applied remediation methods on the natural system. This includes assessment of the geochemistry of contaminants of concern and quantification of geochemical properties of aquifer material. Important geochemical interactions that influence fate and transport of contaminants include aqueous speciation of native groundwater and dissolved contaminants; distribution and abundance of reactive minerals including hydrous ferric oxide, clay minerals, and carbonate minerals; adsorption reactions; mineral equilibrium; and radioactive decay. An effective sampling program that supports intrinsic remediation and chemical manipulation must be based on a thorough understanding of site hydrogeochemistry and hydrology.
Chemicals of concern discussed in this short course include aluminum, antimony, arsenic, barium, beryllium, boron, cadmium, chromium, cobalt, copper, iron, lead, manganese, mercury, molybdenum, nickel, nitrogen, perchlorate, selenium, silver, thallium, uranium, vanadium, and zinc. Intrinsic remediation of several radionuclides is also covered.
The short course consists of in-depth discussions on metals/inorganic geochemistry and investigation methods, geochemical aspects of intrinsic remediation of inorganic chemicals and radionuclides, and chemical manipulation of aquifer material and groundwater. Emphasis is placed on hydrogeochemical processes and field implementation procedures for quantifying and assessing intrinsic remediation and chemical manipulation of metal/inorganic contaminants.
Data collection and analyses, assessment of hydrogeochemical processes, quantification of contaminant mobility, and understanding regulatory considerations involved in implementing intrinsic remediation and chemical manipulation as viable restoration/remediation options are also presented. Case histories are presented throughout the short course. Class exercises focusing on geochemical processes, intrinsic remediation, and chemical manipulation are included each day of the short course.
- In this course, you will learn about:
- Improved sampling/analysis plans for metals/inorganics characterization
- Occurrence and distribution of metals in soil and groundwater environments
- Development of conceptual site geochemical models for metals
- Geochemical processes affecting fate and transport of metals in the subsurface
- Remediation alternatives for metal contaminants.
Who should attend?
- Project managers
- Sampling team members
- Remediation designers
- Acid mine drainage investigators