County page
Sweet Grass County
Sweet Grass County currently shows 0 Superfund sites, 12 imported facility profiles, and 373,576 lbs in loaded TRI releases.
Overview
What this county page is saying
This live county page is generated from the ingested EPA datasets. It merges ECHO facility compliance rows, TRI release totals, and any Superfund sites attached to Sweet Grass County.
The latest loaded TRI year is 2024, with 373,576 lbs in county-level on-site releases tied to the imported facility set.
Focus points
Design and product notes
County pages combine facility compliance history with chemical release totals.
TRI chemistry shows what is being reported, while ECHO shows who keeps drawing enforcement attention.
Superfund records add legacy cleanup context even when live contaminant detail is still sparse.
Superfund layer
Cleanup sites in this county
Facilities
Worst polluters and compliance pressure
Stillwater Mining Co East Boulder Mine
Violation Identified across 10 of the last 12 quarters in the imported ECHO record.
Big Timber
Significant noncompliance across 7 of the last 12 quarters in the imported ECHO record.
Spring Creek Campground
Significant noncompliance across 5 of the last 12 quarters in the imported ECHO record.
Greycliff Rest Area Eastbound-treatment Plant
Significant noncompliance across 5 of the last 12 quarters in the imported ECHO record.
C Sharps Arms Co Inc
No Violation Identified across 3 of the last 12 quarters in the imported ECHO record.
Big Timber Koa
Violation Identified across 3 of the last 12 quarters in the imported ECHO record.
Mdt Greycliff Rest Area
Violation Identified across 2 of the last 12 quarters in the imported ECHO record.
Camp On the Boulder
No Violation Identified across 2 of the last 12 quarters in the imported ECHO record.
Greycliff Rest Area Westbound-treatment Plant
No Violation Identified across 2 of the last 12 quarters in the imported ECHO record.
Town Pump Big Timber Super 8-tp For Well 1 2
No Violation Identified across 2 of the last 12 quarters in the imported ECHO record.
Boulder River Foundry
Under review. Last recorded ECHO inspection: 2025-02-27.
Shiloh Sharps
Under review. Last recorded ECHO inspection: 2025-02-27.
| Chemical | Group | Facilities | Total pounds |
|---|---|---|---|
| Nickel compounds | Metals and metal compounds | 1 | 209,279 lbs |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | Metals and metal compounds | 1 | 69,740 lbs |
| Methanol | TRI-listed chemical | 1 | 54,906 lbs |
| Copper compounds | TRI-listed chemical | 1 | 37,012 lbs |
| Propylene | TRI-listed chemical | 1 | 2,136 lbs |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | TRI-listed chemical | 1 | 493 lbs |
| Lead compounds | Metals and metal compounds | 1 | 9 lbs |
| Styrene | Volatile organic compound | 1 | 0 lbs |
Violation pages
State-level violation context tied to this county
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Clean Air Act violations in Montana
Montana facilities in the imported ECHO data show air-program oversight, inspections, or noncompliance signals.
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Clean Water Act violations in Montana
Montana facilities in the imported ECHO data show water-permit pressure, inspections, or noncompliance signals.
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RCRA violations in Montana
Montana facilities in the imported ECHO data show hazardous-waste or RCRA oversight signals.