Non-Compliance
Clean Water Act
RCRA
NORTHERN CHEYENNE UTILITY COMMISSION WASTEWATER TREATMENT PLANT
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $1,500 in total penalties since records began.
- Address
-
100 RIDGEWALKER DR
LAME DEER, MT 59043
View on map ↗ - County
- ROSEBUD County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221320
- Inspections
- 2 · last Jul 12, 2023
- Total Penalties
- $1,500 · last Nov 8, 2021
- Registry ID
- 110004010748
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.
12
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
0
Hazardous Waste (RCRA)
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 |
|---|---|---|---|---|
| cwa | Schedule Event unachieved and not reported | Sep 1, 2021 | Dec 1, 2021 | Resolved |
| cwa | Schedule Event unachieved and not reported | Mar 1, 2021 | Nov 8, 2021 | Resolved |
| cwa | Schedule Event unachieved and not reported | Sep 1, 2020 | Nov 8, 2021 | Resolved |
| cwa | Schedule Event unachieved and not reported | Mar 1, 2020 | Nov 8, 2021 | Resolved |
| cwa | Schedule Event unachieved and not reported | Sep 1, 2019 | Nov 8, 2021 | Resolved |
| cwa | Schedule Event unachieved and not reported | Mar 1, 2019 | Nov 8, 2021 | Resolved |
| cwa | Permit Violations - Discharge Without a Valid Permit | Feb 28, 2016 | Nov 8, 2021 | Resolved |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| E. coli | DMR, Limited - Numeric Violation | 26,130.00 MPN/100mL | 406.00 | +6,336% | Dec 2025 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 0.90 mg/L | 5.00 | +82% | Dec 2025 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 3.10 mg/L | 6.50 | +52% | Dec 2025 | Open |
| E. coli | DMR, Limited - Numeric Violation | 26,130.00 MPN/100mL | 126.00 | +20,638% | Dec 2025 | Open |
| Oil and grease visual | DMR, Limited - Numeric Violation | 1.00 pass=0;fail=1 | 0.00 | +2,147,483,650% | Dec 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 12.60 mg/L | 2.31 | +445% | Dec 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 12.60 mg/L | 1.17 | +977% | Dec 2025 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Overdue | 0.70 mg/L | 5.00 | +86% | Nov 2025 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 1.70 mg/L | 6.50 | +74% | Nov 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 11.90 mg/L | 1.17 | +917% | Nov 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 11.90 mg/L | 2.31 | +415% | Nov 2025 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 0.70 mg/L | 5.00 | +86% | Nov 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Overdue | 11.90 mg/L | 1.17 | +917% | Nov 2025 | Resolved |
| Oil and grease visual | DMR, Limited - Numeric Violation | 1.00 pass=0;fail=1 | 0.00 | +2,147,483,650% | Nov 2025 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Overdue | 1.70 mg/L | 6.50 | +74% | Nov 2025 | Open |
| Oil and grease visual | DMR, Monitor Only - Overdue | 1.00 pass=0;fail=1 | 0.00 | +2,147,483,650% | Nov 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Overdue | 11.90 mg/L | 2.31 | +415% | Nov 2025 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 0.70 mg/L | 6.50 | +89% | Oct 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 9.60 mg/L | 1.17 | +721% | Oct 2025 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Overdue | 0.70 mg/L | 6.50 | +89% | Oct 2025 | Open |
| E. coli | DMR, Limited - Numeric Violation | 5,172.00 MPN/100mL | 126.00 | +4,005% | Oct 2025 | Open |
| E. coli | DMR, Limited - Overdue | 5,172.00 MPN/100mL | 406.00 | +1,174% | Oct 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 9.60 mg/L | 2.31 | +316% | Oct 2025 | Open |
| Oil and grease visual | DMR, Monitor Only - Overdue | 1.00 pass=0;fail=1 | 0.00 | +2,147,483,650% | Oct 2025 | Resolved |
| Oil and grease visual | DMR, Limited - Numeric Violation | 1.00 pass=0;fail=1 | 0.00 | +2,147,483,650% | Oct 2025 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Overdue | 0.10 mg/L | 5.00 | +98% | Oct 2025 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 0.10 mg/L | 5.00 | +98% | Oct 2025 | Open |
| E. coli | DMR, Limited - Numeric Violation | 5,172.00 MPN/100mL | 406.00 | +1,174% | Oct 2025 | Open |
| E. coli | DMR, Limited - Overdue | 5,172.00 MPN/100mL | 126.00 | +4,005% | Oct 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Overdue | 9.60 mg/L | 2.31 | +316% | Oct 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Overdue | 9.60 mg/L | 1.17 | +721% | Oct 2025 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Overdue | 6.00 mg/L | 6.50 | +8% | Sep 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.60 mg/L | 2.31 | +359% | Sep 2025 | Open |
| E. coli | DMR, Limited - Overdue | 8,664.00 MPN/100mL | 126.00 | +6,776% | Sep 2025 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 6.00 mg/L | 6.50 | +8% | Sep 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Overdue | 10.60 mg/L | 2.31 | +359% | Sep 2025 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 8,664.00 MPN/100mL | 126.00 | +6,776% | Sep 2025 | Open |
| Oil and grease visual | DMR, Limited - Numeric Violation | 1.00 pass=0;fail=1 | 0.00 | +2,147,483,650% | Sep 2025 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 1.30 mg/L | 5.00 | +74% | Sep 2025 | Open |
| E. coli | DMR, Limited - Overdue | 8,664.00 MPN/100mL | 406.00 | +2,034% | Sep 2025 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Overdue | 1.30 mg/L | 5.00 | +74% | Sep 2025 | Open |
| E. coli | DMR, Limited - Numeric Violation | 8,664.00 MPN/100mL | 406.00 | +2,034% | Sep 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 10.60 mg/L | 1.17 | +806% | Sep 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Overdue | 10.60 mg/L | 1.17 | +806% | Sep 2025 | Resolved |
| Oil and grease visual | DMR, Monitor Only - Overdue | 1.00 pass=0;fail=1 | 0.00 | +2,147,483,650% | Sep 2025 | Resolved |
| Oxygen, dissolved [DO] | DMR, Limited - Overdue | 0.30 mg/L | 5.00 | +94% | Jul 2025 | Open |
| Oxygen, dissolved [DO] | DMR, Limited - Numeric Violation | 0.30 mg/L | 5.00 | +94% | Jul 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Overdue | 12.90 mg/L | 0.64 | +1,916% | Jul 2025 | Resolved |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 12.90 mg/L | 0.64 | +1,916% | Jul 2025 | Resolved |
| E. coli | DMR, Limited - Numeric Violation | 77,010.00 MPN/100mL | 126.00 | +61,019% | Jul 2025 | 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.
Judicial
· Case 08-2016-0073 · Nov 8, 2021
$1,500
Administrative - Formal
· Case 08-2015-0075 · Jul 7, 2015
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