An Impoundment is defined as any dam, or other engineered structure, intended to confine a body of water (fresh, alkaline, or acidic), mine tailings or refining residue, or any other solid or liquid waste material.
Alcoa's size limit criteria for impoundment public disclosures are:
- Greater than 3 hectares (ha) in area, or
- Height (dike, max liquid, cap, etc.) at least ~2 meters above low point of surrounding grade,
- In-ground impoundments (mine pit, pond, etc.) and solid waste landfills not included.
Map of Alcoa Impoundments
Active, Inactive, and Closed (Transformation) Sites
Legend
Bauxite Residue
🟦 Alcoa Owned and Operated
🔵 Alcoa Minority Owner
🔷 Alcoa Interest - not Owned
Mine Tailings
⬛ Alcoa Owned and Operated
⚫ Alcoa Minority Owner
Fly Ash
⬜ Alcoa Owned and Operated
Location Details
A. Europe
- San Ciprian, Galicia, Spain | 🟦 Alcoa Owned and Operated | Bauxite Residue
B. North America
- Warrick, IN, United States | ⬜ Alcoa Owned and Operated | Fly Ash
- Bauxite, AR, United States | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Listerhill, AL, United States | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Point Comfort, TX, United States | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Sherwin Copano, TX, United States | 🔷 Alcoa Interest - not Owned | Bauxite Residue
C. Asia
- Ma'aden, Saudi Arabia | 🔵 Alcoa Minority Owner | Bauxite Residue
D. Africa
- CBG | ⚫ Alcoa Minority Owner (Technical Oversight Only) | Mine Tailings
E. South America
- Suriname | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Juruti, Brazil | ⬛ Alcoa Owned and Operated | Mine Tailings
- Sao Luis, Brazil | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Pocos de Caldas, Brazil | 🟦 Alcoa Owned and Operated | Bauxite Residue
F. Australia
- Kwinana, Australia | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Pinjarra, Australia | 🟦 Alcoa Owned and Operated | Bauxite Residue
- Hedges, Australia | ⬛ Alcoa Owned and Operated | Mine Tailings
- Wagerup, Australia | 🟦 Alcoa Owned and Operated | Bauxite Residue