County page
Pennington County
Pennington County currently shows 1 Superfund site, 190 imported facility profiles, and 68,357 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 Pennington County.
The latest loaded TRI year is 2024, with 68,357 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
Ellsworth Air Force Base
Ellsworth Air Force Base is in EPA's Superfund layer for Ellsworth Afb, SD. Live ingestion currently includes the official EPA detail links and geocoded site record.
Facilities
Worst polluters and compliance pressure
Gcc Dacotah
Violation Identified across 6 of the last 12 quarters in the imported ECHO record.
Larsson's Crooked Creek Cg-north Wel-treat Site-north/middle Well
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Larsson's Crooked Creek Cg-south Wel-treat Site-south Well
Violation Identified across 12 of the last 12 quarters in the imported ECHO record.
Rapid City Water Reclamation Facility
Violation Identified across 9 of the last 12 quarters in the imported ECHO record.
United Parcel Service - Rapid City
No Violation Identified with $5,300,000 in recorded penalties.
Moonshine Gulch Saloon
Significant noncompliance across 8 of the last 12 quarters in the imported ECHO record.
Mountain View Lodge
Violation Identified across 8 of the last 12 quarters in the imported ECHO record.
Pete Lien & Sons, Inc.
No Violation Identified across 2 of the last 12 quarters in the imported ECHO record.
Keystone, Town of (biosolids)
Significant noncompliance across 6 of the last 12 quarters in the imported ECHO record.
Horsley Specialties, Inc.
No Violation Identified across 2 of the last 12 quarters, with $4,983 in recorded penalties.
Dinosaur Museum
Violation Identified across 6 of the last 12 quarters in the imported ECHO record.
Cottonwood Grove
Inactive across 5 of the last 12 quarters in the imported ECHO record.
Silver Dollar Saloon
Violation Identified across 5 of the last 12 quarters in the imported ECHO record.
Midwest Manufacturing Dba Dakota Panel
No Violation Identified across 2 of the last 12 quarters in the imported ECHO record.
South Dakota Ellsworth Development Authority (sdeda)
Violation Identified across 4 of the last 12 quarters in the imported ECHO record.
Canyon Lake Resort
Significant noncompliance across 4 of the last 12 quarters in the imported ECHO record.
Sunnyside Mobile Home Park Ii
Significant noncompliance across 4 of the last 12 quarters in the imported ECHO record.
Ddnj, Llc
Under review with $1,811 in recorded penalties.
Ellsworth Air Force Base
No Violation Identified across 1 of the last 12 quarters in the imported ECHO record.
Box Elder
No Violation Identified across 3 of the last 12 quarters in the imported ECHO record.
| Chemical | Group | Facilities | Total pounds |
|---|---|---|---|
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | TRI-listed chemical | 1 | 30,367 lbs |
| Barium | TRI-listed chemical | 1 | 16,412 lbs |
| Lead compounds | Metals and metal compounds | 2 | 5,916 lbs |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | Metals and metal compounds | 2 | 5,891 lbs |
| Copper | TRI-listed chemical | 1 | 4,756 lbs |
| Manganese | TRI-listed chemical | 1 | 2,886 lbs |
| Formaldehyde | TRI-listed chemical | 1 | 958 lbs |
| Methanol | TRI-listed chemical | 1 | 494 lbs |
| Zinc (fume or dust) | TRI-listed chemical | 1 | 379 lbs |
| Toluene | Volatile organic compound | 1 | 138 lbs |
| Xylene (mixed isomers) | Volatile organic compound | 1 | 39 lbs |
| Mercury | TRI-listed chemical | 1 | 35 lbs |
| Mercury compounds | TRI-listed chemical | 1 | 26 lbs |
| Ethylbenzene | Volatile organic compound | 1 | 23 lbs |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | TRI-listed chemical | 1 | 14 lbs |
| Naphthalene | TRI-listed chemical | 1 | 14 lbs |
| Benzene | Volatile organic compound | 1 | 10 lbs |
| Manganese compounds | TRI-listed chemical | 1 | 0 lbs |
| Arsenic compounds | TRI-listed chemical | 1 | 0 lbs |
| Zinc compounds | TRI-listed chemical | 1 | 0 lbs |
Violation pages
State-level violation context tied to this county
-
Clean Air Act violations in South Dakota
South Dakota facilities in the imported ECHO data show air-program oversight, inspections, or noncompliance signals.
-
Clean Water Act violations in South Dakota
South Dakota facilities in the imported ECHO data show water-permit pressure, inspections, or noncompliance signals.
-
RCRA violations in South Dakota
South Dakota facilities in the imported ECHO data show hazardous-waste or RCRA oversight signals.