County page
Sully County
Sully County currently shows 0 Superfund sites, 7 imported facility profiles, and 23,178 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 Sully County.
The latest loaded TRI year is 2024, with 23,178 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
Ringneck Energy
Violation Identified across 3 of the last 12 quarters in the imported ECHO record.
Agar, Town of
No Violation Identified. Last recorded ECHO inspection: 2024-04-09.
Lamb Chevrolet & Implement Inc.
No Violation Identified. Last recorded ECHO inspection: 2025-03-21.
Onida Utility Improvements
No Violation Identified. Last recorded ECHO inspection: 2025-06-26.
Onida, City of (wtp)
No Violation Identified. Last recorded ECHO inspection: 2025-07-14.
Sully Buttes Substation Grading
Under review. Last recorded ECHO inspection: 2023-08-02.
Sutton Bay Golf, Llc.
Under review. Last recorded ECHO inspection: 2022-08-10.
| Chemical | Group | Facilities | Total pounds |
|---|---|---|---|
| Acetaldehyde | TRI-listed chemical | 1 | 9,936 lbs |
| n-Hexane | TRI-listed chemical | 1 | 4,676 lbs |
| Acrolein | TRI-listed chemical | 1 | 4,660 lbs |
| Methanol | TRI-listed chemical | 1 | 2,009 lbs |
| Formaldehyde | TRI-listed chemical | 1 | 1,404 lbs |
| Toluene | Volatile organic compound | 1 | 128 lbs |
| Benzene | Volatile organic compound | 1 | 125 lbs |
| Xylene (mixed isomers) | Volatile organic compound | 1 | 121 lbs |
| Ethylbenzene | Volatile organic compound | 1 | 121 lbs |
| Ammonia | TRI-listed chemical | 1 | 0 lbs |
| Nitric acid | TRI-listed chemical | 1 | 0 lbs |
Violation pages
State-level violation context tied to this county
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Clean Air Act violations in South Dakota
South Dakota facilities in the imported ECHO data show air-program oversight, inspections, or noncompliance signals.
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Clean Water Act violations in South Dakota
South Dakota facilities in the imported ECHO data show water-permit pressure, inspections, or noncompliance signals.
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RCRA violations in South Dakota
South Dakota facilities in the imported ECHO data show hazardous-waste or RCRA oversight signals.