BISMARCK MUNICIPAL AIRPORT
NPDES ID: NDR050337
D — SNC: Discharge monitoring report not received
The facility didn't submit its required discharge monitoring report.
This quarter: 8 reporting violations.
Violations
October 31, 2025
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
September 30, 2025
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
August 31, 2025
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
July 31, 2025
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
June 30, 2025
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
May 31, 2025
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
April 30, 2025
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
Date of Storm Event
0% over limit
Discharged 0 date against a permitted limit of 0 date (VALUE)
DMR, Monitor Only - Overdue
Dry days preceding precipitation event
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
Rainfall
0% over limit
Discharged 0 m against a permitted limit of 0 m (TOTAL)
DMR, Monitor Only - Overdue
Rainfall duration
0% over limit
Discharged 0 d against a permitted limit of 0 d (VALUE)
DMR, Monitor Only - Overdue
March 31, 2025
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MXSINSAM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 8.1 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 8.41 mg/L (MXSINSAM)
DMR, Limited - Overdue
February 28, 2025
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MXSINSAM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.9 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
January 31, 2025
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MXSINSAM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.9 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
November 30, 2024
pH
0% over limit
Discharged 8.1 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MXSINSAM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MXSINSAM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 8.41 mg/L (MXSINSAM)
DMR, Limited - Overdue
Oil and grease visual
0% over limit
Discharged 0 pass=0;fail=1 against a permitted limit of 1 pass=0;fail=1 (TOTAL)
DMR, Limited - Overdue
pH
0% over limit
Discharged 8.1 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 18 mg/L against a permitted limit of 120 mg/L (MXSINSAM)
DMR, Limited - Overdue
October 31, 2024
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MXSINSAM)
DMR, Limited - Overdue
Oil and grease visual
0% over limit
Discharged 0 pass=0;fail=1 against a permitted limit of 1 pass=0;fail=1 (TOTAL)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 8.41 mg/L (MXSINSAM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (MXSINSAM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MXSINSAM)
DMR, Limited - Overdue
September 30, 2024
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 8.41 mg/L (MXSINSAM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MXSINSAM)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MXSINSAM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 8.41 mg/L (MXSINSAM)
DMR, Limited - Overdue
Oil and grease visual
0% over limit
Discharged 0 pass=0;fail=1 against a permitted limit of 1 pass=0;fail=1 (TOTAL)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MXSINSAM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MXSINSAM)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (MXSINSAM)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (MXSINSAM)
DMR, Limited - Overdue
Oil and grease visual
0% over limit
Discharged 0 pass=0;fail=1 against a permitted limit of 1 pass=0;fail=1 (TOTAL)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
August 31, 2024
Oil and grease visual
0% over limit
Discharged 0 pass=0;fail=1 against a permitted limit of 1 pass=0;fail=1 (TOTAL)
DMR, Limited - Overdue
Oil and grease visual
0% over limit
Discharged 0 pass=0;fail=1 against a permitted limit of 1 pass=0;fail=1 (TOTAL)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (MXSINSAM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MXSINSAM)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (MXSINSAM)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MXSINSAM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MXSINSAM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 8.41 mg/L (MXSINSAM)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MXSINSAM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 8.41 mg/L (MXSINSAM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
July 31, 2024
Oil and grease visual
0% over limit
Discharged 0 pass=0;fail=1 against a permitted limit of 1 pass=0;fail=1 (TOTAL)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MXSINSAM)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MXSINSAM)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (MXSINSAM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 8.41 mg/L (MXSINSAM)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (MXSINSAM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 8.41 mg/L (MXSINSAM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Chemical Oxygen Demand [COD]
0% over limit
Discharged 0 mg/L against a permitted limit of 120 mg/L (MXSINSAM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MXSINSAM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Oil and grease visual
0% over limit
Discharged 0 pass=0;fail=1 against a permitted limit of 1 pass=0;fail=1 (TOTAL)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)