---
schema_version: "secwatch.filing_event.v1"
accession: "0001157523-23-001824"
form_type: "8-K"
ticker: "AA"
cik: "0001675149"
company_name: "Alcoa Corp"
filed_at: "2023-12-14T23:59:59+00:00"
generated_at: "2026-06-07T12:52:00.523026+00:00"
event_type: "regulatory"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Alcoa receives WA govt approval for 2023-2027 bauxite mine plan; A$100M guarantee

## Summary
- WA Government approves Alcoa's 2023-2027 Mining and Management Program for Huntly and Willowdale bauxite mines.
- Exemption granted to continue mining if EPA decides to assess the MMP; EPA determination expected by year-end 2023.
- Alcoa provides A$100 million (approx. US$66 million) guarantee to protect drinking water supplies.
- Annual forest clearing capped at 800 hectares; rehabilitation rate to double to 1,000 hectares/year by 2027.
- Alcoa commits to modernize approvals framework and transition new mine regions to EPA assessment process.

## SEC filing metadata
- accession: 0001157523-23-001824
- form_type: 8-K
- ticker: AA
- cik: 0001675149
- company_name: Alcoa Corp
- filed_at: 2023-12-14T23:59:59+00:00
- event_type: regulatory
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1675149/000115752323001824/0001157523-23-001824-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1675149/000115752323001824/a53870790.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001157523-23-001824
- JSON: https://secwatch.observer/filing/0001157523-23-001824.json
- Plain text: https://secwatch.observer/filing/0001157523-23-001824.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.