Facility profile
Stillwater Mining Co East Boulder Mine
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.
Noncompliance quarters
10
Counted from the imported ECHO record over the last 12 quarters.
Penalties
$0
Recorded enforcement amount carried into the facility page.
Last inspection
2022-08-03
Displayed as plain language instead of hidden in agency exports.
Trend
Watch
Reported on-site releases are higher in 2024 than in 2022.
| Year | Air | Water | Land | Total |
|---|---|---|---|---|
| 2022 | 2,286 lbs | 0 lbs | 283,259 lbs | 285,545 lbs |
| 2023 | 2,315 lbs | 0 lbs | 407,143 lbs | 409,458 lbs |
| 2024 | 2,334 lbs | 0 lbs | 371,242 lbs | 373,576 lbs |
Chemical breakdown
What this facility is reporting
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Nickel compounds
Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.
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Chromium compounds (except for chromite ore mined in the Transvaal Region)
Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.
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Methanol
Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.
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Copper compounds
Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.
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Propylene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.
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Lead compounds
Latest 2024 TRI data shows land as the largest reported pathway for this chemical at the facility.
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Styrene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
Enforcement layer
Why the ECHO-style detail matters
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.