Clean Water Act discharge permit · NPDES MTG070775

KNIFE RIVER YELLOWSTONE MDT HARDIN NORTH WHITMAN COULEE, Hardin, MT: NPDES MTG070775 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
2Pollutants under a numeric limit
0Pollutants with an effluent exceedance

KNIFE RIVER YELLOWSTONE MDT HARDIN NORTH WHITMAN COULEE, held by KNIFE RIVER YELLOWSTONE, holds NPDES permit MTG070775, which discharges to Unnamed Tributary. EPA’s file records it issued August 1, 2015 and expiring August 31, 2015. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	KNIFE RIVER YELLOWSTONE MDT HARDIN NORTH WHITMAN COULEE
Permittee as filed	KNIFE RIVER YELLOWSTONE
NPDES ID	MTG070775
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	August 1, 2015
Expiration date	August 31, 2015
Issuing agency	MONTANA DEQ
Address	Hardin, MT 59034
Receiving water	UNNAMED TRIBUTARY
Subwatershed	Whitman Creek (HUC 100800150701)
SIC	1611 – Highway And Street Construction

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

5Pollutants on file
2Under a numeric limit
5With a violation of any kind
0With an effluent exceedance

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 measure	Limits	Violations, any kind
Turbidity	2	2
Oil and grease visual	1	1
Oil & Grease	0	1
Flowing, Receiving Stream	0	1
Outfall observation,visual, y/n response	0	1

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTG070775.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTG070775.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

Watch this permit

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MTG070775 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers NPDES discharge permit MTG070775, held by KNIFE RIVER YELLOWSTONE MDT HARDIN NORTH WHITMAN COULEE in Hardin, MT, which discharges to an Unnamed Tributary in the Whitman Creek subwatershed (HUC 100800150701). The permit is listed as administratively continued, with a minor discharger class of 2, 0 pollutants under a numeric limit, and 0 pollutants with an effluent exceedance.