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Clean Water Act discharge permit · NPDES MTG490021

KNIFE RIVER BILLINGS 56TH STREET PIT, Billings, MT: NPDES MTG490021 discharge permit, effluent exceedances, inspections, penalties

KNIFE RIVER BILLINGS 56TH STREET PIT, held by KNIFE RIVER BILLINGS, holds NPDES permit MTG490021, which discharges to Yellowstone River. EPA’s file records it issued December 5, 2019 and expiring October 31, 2024.

KNIFE RIVER BILLINGS 56TH STREET PIT, Billings, Montana: Coverage under a general permit MTG490021, held by KNIFE RIVER BILLINGS; Administratively continued (past its expiration date and still in force until reissued); issued December 5, 2019, term to October 31, 2024; discharges to YELLOWSTONE RIVER.

  • Turbidity: 0 limits, 87 violations of any kind, 3 effluent exceedances, latest August 31, 2008.
  • pH: 4 limits, 19 violations of any kind, 2 effluent exceedances, latest April 30, 2014.
  • Flow rate: 0 limits, 17 violations of any kind, 0 effluent exceedances.
  • Oil and grease, hexane extr method: 2 limits, 9 violations of any kind, 0 effluent exceedances.
  • Oil and grease visual: 2 limits, 8 violations of any kind, 0 effluent exceedances.
  • Duration of discharge: 0 limits, 8 violations of any kind, 0 effluent exceedances.
  • Solids, total suspended: 4 limits, 0 violations of any kind, 0 effluent exceedances.
  • April 16, 2024: Monitoring Violations - Frequency of Sampling Violation (ST6).
  • April 16, 2024: Reporting Violations - Improper/ Incorrect Reporting (ST6).

Other permits held by KNIFE RIVER BILLINGS

KNIFE RIVER BILLINGS 56TH STREET PIT among its neighbors

EPA’s permit file holds 49 discharge permits in the Yellowstone River-Broakway Creek subwatershed (HUC 100700040604), MTG490021 among them. Its county holds 431, 6 of them major permits; MTG490021 is a minor permit.

Other permits in the Yellowstone River-Broakway Creek subwatershed (HUC 100700040604)

  • 56TH STREET SHOPS, Billings: MTR109699, minor permit, discharging to YELLOWSTONE RIVER, permit term to December 31, 2022
  • 8458 SOUTH FRONTAGE ROAD, Billings: MTR110344, minor permit, discharging to DUCK CREEK, permit term to December 31, 2027
  • BILLINGS BATCH PLANT, Billings: MTR000845, minor permit, discharging to YELLOWSTONE RIVER, permit term to January 31, 2028
  • BNSF LAUREL AUTO FACILITY, Laurel: MTR111956, minor permit, discharging to YELLOWSTONE RIVER, permit term to December 31, 2027
  • BNSF LAUREL YARD, Laurel: MTR111872, minor permit, discharging to YELLOWSTONE RIVER, permit term to December 31, 2027
  • BRENNTAG PACIFIC INC, Billings: MTR000536, minor permit, discharging to YELLOWSTONE RIVER, permit term to January 31, 2023
  • BRENNTAG PACIFIC INC, Billings: MTRNE0057, not classed, discharging to DITCH
  • BROOKWOOD SUBDIVISION, PHASE 3 AND 4, Laurel: MTR105529, minor permit, discharging to CANYON CREEK DITCH, permit term to December 31, 2017
  • BULLSEYE FEEDLOT - DUCK CREEK UNIT, Billings: MTG010316, minor permit, discharging to YELLOWSTONE RIVER, permit term to October 31, 2023
  • CANYON CREEK SHOP BUILDINGS, Billings: MTR110418, minor permit, discharging to CANYON CREEK, permit term to December 31, 2027

Identity

Facility as filedKNIFE RIVER BILLINGS 56TH STREET PIT
Permittee as filedKNIFE RIVER BILLINGS
NPDES IDMTG490021
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedDecember 5, 2019
Expiration dateOctober 31, 2024
AddressBillings, MT 59106
Receiving waterYELLOWSTONE RIVER
SubwatershedYellowstone River-Broakway Creek (HUC 100700040604)

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Turbidity0873August 31, 2008
pH4192April 30, 2014
Flow rate0170
Oil and grease, hexane extr method290
Oil and grease visual280
Duration of discharge080
Solids, total suspended400

Inspections, violations and enforcement

DateWhat EPA recordedAgency
April 16, 2024Monitoring Violations - Frequency of Sampling ViolationST6
April 16, 2024Reporting Violations - Improper/ Incorrect ReportingST6

Inspections

EPA’s inspection file holds no inspection for NPDES MTG490021.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES MTG490021.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES MTG490021 for KNIFE RIVER BILLINGS 56TH STREET PIT in Billings, MT, which discharges to the Yellowstone River and is listed as administratively continued. The page lists 7 pollutants on file, 4 under a numeric limit, 2 with an effluent exceedance, and 6 under a numeric limit in the effluent limits section.