EPA Air · by county
Air-emissions sources in Clark County, South Dakota
- 3Facilities
Every stationary source in Clark County, South Dakota that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
Every source’s record in Clark County
Each of the 3 operating major, synthetic minor and minor sources in Clark County, South Dakota has a record page: every source in Clark County, A to Z.
By emissions classification in Clark County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
Inspections in Clark County, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2026 inspections 3
- 2025 inspections 3
- 2024 inspections 3
- 2023 inspections 3
- 2022 inspections 3
- 2021 inspections 3
- 2019 inspections 3
- 2018 inspections 3
Inspections in Clark County, year by year
Other counties in South Dakota
Every county in the state with at least three sources on file.
- Beadle County 12
- Brookings County 12
- Brown County 14
- Clay County 7
- Codington County 12
- Custer County 4
- Davison County 11
- Deuel County 3
- Edmunds County 5
- Grant County 5
- Hamlin County 3
- Harding County 5
- Hughes County 5
- Hutchinson County 3
- Jerauld County 3
- Lawrence County 4
- Lincoln County 11
- McCook County 6
- Minnehaha County 61
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| NORTHERN BORDER PIPELINE COMPANY - CLARK COMPRESSOR | Major source | No |
| NORTHWESTERN ENERGY PUBLIC SERVICE CORPORATION - CLARK | Major source | No |
| WILLOW LAKE COMPRESSOR STATION | Major source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register for Clark county, SD. It lists 3 facilities in Clark county, all of which are major sources.