Clean Air Act stationary source · ICIS-AIR ND0000003805300163
ONEOK ROCKIES MIDSTREAM, L.L.C. - DEMICKS LAKE GAS PLANT - AQ, Watford City, ND: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 4Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 0Formal enforcement actions since January 1, 2017
ONEOK ROCKIES MIDSTREAM, L.L.C. - DEMICKS LAKE GAS PLANT - AQ, at 11242 -33RD STREET NW, Watford City in McKenzie County, North Dakota, is an operating major source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “No Violation Identified”. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.
Identity
| Facility as filed | ONEOK ROCKIES MIDSTREAM, L.L.C. - DEMICKS LAKE GAS PLANT - AQ |
|---|---|
| ICIS-AIR ID | ND0000003805300163 |
| EPA facility registry ID | 110070616691 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | No Violation Identified |
| Address | 11242 -33RD STREET NW, Watford City, ND 58847 |
| County | McKenzie County |
| In a nonattainment county | No (EPA Green Book) |
| Industry (NAICS) | Oil and gas extraction (NAICS 2111) |
| SIC code | 1321 |
| EPA region | 08 |
Cited to the EPA ICIS-AIR facility file (ECHO download).
Programs and pollutants
Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs ONEOK ROCKIES MIDSTREAM, L.L.C. - DEMICKS LAKE GAS PLANT - AQ is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.
Compliance evaluations
- 4Evaluations since January 1, 2017
- 3Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| July 2, 2025 | FCE On-Site | State | Stratospheric Ozone Protection; 40 CFR Part 63 Area Sources; New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 7, 2023 | FCE On-Site | State | Stratospheric Ozone Protection; 40 CFR Part 63 Area Sources; New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 20, 2021 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| September 18, 2019 | PCE On-Site | U.S. EPA | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Violations
- 0Violation determinations since January 1, 2017
- 0Of them high-priority
A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.
EPA’s violation history file holds no violation for ICIS-AIR ND0000003805300163 since January 1, 2017.
Enforcement and penalties
0 formal enforcement actions since January 1, 2017, 0 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.
Informal enforcement
EPA’s informal action file holds no notice or warning for ICIS-AIR ND0000003805300163 since January 1, 2017.
Stack tests
- 2Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| May 15, 2024 | Pass | State |
| July 27, 2023 | Pass | State |
Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.
Watch this source
One source, $99/month. A source: the register entry for a plant, refinery, kiln, generating station, or other fixed installation the agency tracks under the Clean Air Act. Choose “One source” and enter this source’s ICIS-AIR ID, ND0000003805300163.
Start the watch
- One source — $99/month
- One county — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110070616691 there.
Nearby on the register
- Air-emissions sources in McKenzie County
- Every source record in McKenzie County, A to Z
- Air-emissions sources in North Dakota
- Every source record in North Dakota, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.