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Clean Water Act discharge permit · NPDES MTR000678

DEAN DAIRY FLUIDS LLC, Billings, MT: NPDES MTR000678 discharge permit, effluent exceedances, inspections, penalties

DEAN DAIRY FLUIDS LLC holds NPDES permit MTR000678, which discharges to Alkali Creek. EPA’s file records it issued August 17, 2020 and expiring January 31, 2023. 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 filedDEAN DAIRY FLUIDS LLC
Permittee as filedDEAN DAIRY FLUIDS LLC
NPDES IDMTR000678
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
ProgramIndustrial stormwater
IssuedAugust 17, 2020
Expiration dateJanuary 31, 2023
AddressBillings, MT 59102
Receiving waterALKALI CREEK
SubwatershedYellowstone River-Billings (HUC 100700041006)
SIC2026 – Fluid Milk

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

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
pH0220
Solids, total suspended0220
Chemical Oxygen Demand [COD]0220

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTR000678.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTR000678.

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.

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How we handle your data → Privacy

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 MTR000678 there.

Nearby on the register

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

What this page shows

The DEAN DAIRY FLUIDS LLC storm water industrial permit is one of 70 such permits in Yellowstone County, and 77.1% of them carry an earlier issue date than this one. The permit sits within a subwatershed that holds 157 NPDES permits, this one included, and it has no pollutants under a numeric limit and no pollutants with an effluent exceedance on file.