Site Documents & Maps
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Featured Documents
- Explanation of Significant Differences (ESD) Residential Lead September 2026 (pdf) (1.2 MB)
- Benedict Park Engineer Evaluation and Cost Analysis (EE/CA) August 2026 (pdf) (4.4 MB)
- Final Baseline Ecological Risk Assessment for Operable Unit 2, May 2026(pdf) (94MB)
- First Five Year Review, January 2023 (pdf) (14MB)
- Screening Level Ecological Risk Assessment for Operable Unit 2, 2024 (pdf) (16 MB)
- Baseline Ecological Risk Assessment (BERA) Work Plan for Operable Unit 2 (pdf) (117 MB)
- Commercial and Alleyways Human Health Risk Assessment OU1 (pdf) (26MB)
Community Involvement and Fact Sheets
- Residential Brochure revised March 2025 (pdf) (2.5 MB)
- Commercial Brochure revised March 2025 (pdf) (3.6 MB)
- Fact Sheet About Electric Arc Furnace Slag at Colorado Smelter (pdf) (1.5 MB)
- Colorado Smelter 2019 Community Involvement Plan update final (pdf) (3.71 MB)
Decision Documents
- Interim Record of Decision for Residential Properties in OU1, 2017 (pdf) (7.59 MB)
- Explanation of Significant Differences for Residential Properties, 2024 ESD (pdf) (1.2 MB)
Maps
Print friendly version: Colorado Smelter Site June 2023 (pdf)
Print friendly version: Colorado Smelter Site Study Area Expansion Sept. 2022 (jpg)