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  • Formaat: 224 pages
  • Ilmumisaeg: 16-Mar-2023
  • Kirjastus: National Academies Press
  • Keel: eng
  • ISBN-13: 9780309691246

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Virginia was one of the first major gold-producing states in the U.S., but it has seen only limited and intermittent gold mining activity in the last 70 years. Recent increase in gold prices and other factors have brought renewed attention to mining gold at both new and historical sites in Virginia. This report provides an evaluation of the gold deposits in Virginia, the probable modern mining techniques that could be used at such deposits, and whether existing regulations in the Commonwealth are sufficient to protect air and water quality and human health from potential impacts of gold mining activities.



The report concludes that the regulatory framework of Virginia appears to have been designed for operations like crushed stone quarrying and sand and gravel operations, not gold mining. Thus, the current regulatory framework is not adequate to address the potential impacts of commercial gold mining and lacks an adequate financial assurance system, which poses a fiscal and environmental risk to the Commonwealth. Additionally, Virginia lacks opportunities for the public to be engaged in permitting processes and a modern system for review of environmental impacts from potential gold mining projects.

Table of Contents



Front Matter Summary 1 Introduction 2 Geology and Geochemistry of Gold Occurrences in Virginia 3 Modern Gold Mining Operations 4 Potential Impacts to Health and the Environment 5 Virginia's Regulatory Framework References Glossary Appendix A: Committee Member and Staff Biographical Sketches Appendix B: Disclosure of Unavoidable Conflicts of Interest Appendix C: Metal Distribution and Potential for Mobilization Appendix D: Valzinco Samples from Puddle Appendix E: Comparison to Other Deposits
Summary 1(8)
1 Introduction
9(14)
Gold Mining in Virginia
10(5)
Characteristics of Virginia Relevant to Gold Mining Impacts
15(5)
Study Task and Approach
20(2)
Report Roadmap
22(1)
2 Geology And Geochemistry Of Gold Occurrences In Virginia
23(24)
Geology of Virginia
23(2)
Where Does Gold Occur in Virginia?
25(6)
Characterization of Gold Occurrences in Virginia
31(11)
Comparable Deposits Around the World
42(3)
Summary of Findings
45(2)
3 Modern Gold Mining Operations
47(44)
Exploration, Evaluation, and Development
47(4)
Mining Methods
51(6)
Gold Processing Methods
57(17)
Waste Material
74(5)
Water Management
79(2)
Reclamation, Closure, and Monitoring
81(7)
Mining Methods at Comparable Deposits
88(2)
Summary of Findings
90(1)
4 Potential Impacts To Health And The Environment
91(24)
Broad Discussion of Impacts
91(2)
Acid Rock Drainage
93(1)
Metals and Metalloids
94(7)
Cyanide
101(2)
Nitrogen
103(1)
Tailings Storage Facilities Failure and Tailings Release
104(1)
Water Table Depression
105(3)
Air Emissions
108(1)
Cumulative Health Impacts from Combined Exposures
109(2)
Conclusions and Recommendation
111(4)
5 Virginia's Regulatory Framework
115(76)
Federal Environmental Reviews
115(4)
State Environmental Reviews
119(1)
Implications of Federal Regulations for Gold Mining
119(10)
Virginia's Mineral Mining Laws, Regulations and Guidance
129(35)
Conclusions and Recommendation
164(5)
References
169(18)
Glossary
187(4)
APPENDIXES
A Committee Member And Staff Biographical Sketches
191(6)
B Disclosure Of Unavoidable Conflicts Of Interest
197(2)
C Metal Distribution And Potential For Mobilization
199(4)
D Valzinco Samples From Puddle
203(2)
E Comparison To Other Deposits
205