Facility Profile

STILLWATER MINING CO EAST BOULDER MINE
STILLWATER MINING CO
Facility Summary
517 W 1ST AVE, BIG TIMBER, MT, 59011 (SWEET GRASS)
In 2022, this facility made toxic releases of:
- Concern to the air
- Onsite air release of Clean Air Act chemicals
- Onsite release Persistent bioaccumulative toxic substance (PBTs)
- Onsite release of known carcinogens
This facility reported the following greenhouse gas releases for 2022:
18-month enforcement and compliance history summary for this facility:
Facility: No Violation Identified
Clean Air Act:
Clean Water Act: No Violation Identified
Resource Conservation and Recovery Act : No Violation Identified
Total Penalties: $0
Last Penalty: 08/13/2015
2022 Toxic Substance Releases
Substance Total
(lbs)
Air
(lbs)
Water
(lbs)
Land
(lbs)
UnInj
(lbs)
Offsite
(lbs)
MERCURY COMPOUNDS
CASRN: N495
152,500.00 73.00 0.00 152,427.00 0.00 0.00
Substance Total Air Water Land UnInj Offsite
METHYL ALCOHOL
CASRN: 67-56-1
51,660.00 106.00 0.00 51,554.00 0.00 0.00
This substance is a developmental or reproductive toxin. (Source: California Proposition 65)
This substance is an endocrine disruptor. (Source: TEDX (The Endocrine Disruption eXchange))
This substance is a clean air act chemical. (Source: U.S. EPA Toxics Release Inventory (TRI))
Substance Total Air Water Land UnInj Offsite
CHROMIUM COMPOUNDS
CASRN: N090
47,955.00 4.00 0.00 47,951.00 0.00 0.00
This substance is a clean air act chemical. (Source: U.S. EPA Toxics Release Inventory (TRI))
Substance Total Air Water Land UnInj Offsite
COPPER COMPOUNDS
CASRN: N100
30,540.00 26.00 0.00 30,514.00 0.00 0.00
Substance Total Air Water Land UnInj Offsite
PROPYLENE
CASRN: 115-07-1
2,075.00 2,075.00 0.00 0.00 0.00 0.00
This substance is an endocrine disruptor. (Source: TEDX (The Endocrine Disruption eXchange))
Substance Total Air Water Land UnInj Offsite
NITRATE COMPOUNDS (WATER DISSOCIABLE)
CASRN: N511
751.00 0.00 0.00 751.00 0.00 0.00
Substance Total Air Water Land UnInj Offsite
MERCURY COMPOUNDS
CASRN: N458
44.50 1.90 0.00 42.60 0.00 0.00
This is a persistent bioaccumulative toxic substance (PBTs). (Source: U.S. EPA Toxics Release Inventory (TRI))
This substance is a clean air act chemical. (Source: U.S. EPA Toxics Release Inventory (TRI))
Substance Total Air Water Land UnInj Offsite
LEAD COMPOUNDS
CASRN: N420
19.90 0.30 0.00 19.60 0.00 0.00
Substance Total Air Water Land UnInj Offsite
STYRENE
CASRN: 100-42-5
0.00 0.00 0.00 0.00 0.00 0.00
Substance Total Air Water Land UnInj Offsite