Non-Compliance
Clean Air Act
ROCKY MOUNTAIN MIDSTREAM - MUSTANG CS
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $88,025 in total penalties since records began.
- Address
-
NENE SEC 12 T3N R65W
LA SALLE 8.4 MI. N OF, CO 80645
View on map ↗ - County
- WELD County
- Industry
- Mining, Quarrying, and Oil and Gas Extraction
- NAICS (North American Industry Classification)
- 211130
- Inspections
- 5 · last Aug 4, 2025
- Total Penalties
- $88,025 · last Oct 18, 2021
- Registry ID
- 110070235920
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
2
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | FRV | Nov 4, 2025 | — | Open |
| caa | FRV | May 25, 2023 | — | Open |
| caa | FRV | Aug 10, 2021 | — | Open |
| caa | FRV | May 24, 2020 | — | Open |
| caa | FRV | Feb 18, 2020 | — | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.
Notice of Violation
Clean Air Act
· Case 3604696535 · Jan 15, 2026
Administrative - Formal
Clean Air Act
· Case 3603548756 · Mar 9, 2023
$0
Notice of Violation
Clean Air Act
· Case 3602876736 · Oct 21, 2021
Administrative - Formal
Clean Air Act
· Case 3602997303 · Oct 18, 2021
$88,025
Notice of Violation
Clean Air Act
· Case 3602234419 · Jul 2, 2020
Other facilities in WELD County, CO
ENSIGN WELL SERVICES
LA SALLE, CO
· Mining, Quarrying, and Oil and Gas Extraction
YORK ST. IMPROVEMENTS
DACONO, CO
LAKE BLUFF FILING NO. 3
GREELEY, CO
DCP MIDSTREAM, LP - MIDPOINT C.S.
EVANS, CO
· Mining, Quarrying, and Oil and Gas Extraction
ECA CO LEAD
GREELEY, CO
BESTWAY CONCRETE CO-LONGMONT
LONGMONT, CO
· Manufacturing