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Clean Water Act discharge permit · NPDES MTG130008

USFWS-ENNIS NAT FISH HATCHERY, Ennis, MT: NPDES MTG130008 discharge permit, effluent exceedances, inspections, penalties

USFWS-ENNIS NAT FISH HATCHERY, held by USFWS ENNIS NAT FISH HATCHERY, holds NPDES permit MTG130008, which discharges to Blaine Spring Creek. EPA’s file records it issued August 23, 2011 and expiring June 30, 2016.

USFWS-ENNIS NAT FISH HATCHERY, Ennis, Montana: Coverage under a general permit MTG130008, held by USFWS ENNIS NAT FISH HATCHERY; Administratively continued (past its expiration date and still in force until reissued); issued August 23, 2011, term to June 30, 2016, by MONTANA DEQ; discharges to BLAINE SPRING CREEK.

  • Nitrogen, total [as N]: 0 limits, 15 violations of any kind, 0 effluent exceedances.
  • Nitrogen, Kjeldahl, total [as N]: 0 limits, 15 violations of any kind, 0 effluent exceedances.
  • Nitrite + Nitrate total [as N]: 0 limits, 15 violations of any kind, 0 effluent exceedances.
  • Phosphorus, total [as P]: 0 limits, 15 violations of any kind, 0 effluent exceedances.
  • Flow rate: 2 limits, 8 violations of any kind, 0 effluent exceedances.
  • Fish feed used: 2 limits, 8 violations of any kind, 0 effluent exceedances.
  • Solids, total suspended: 1 limit, 6 violations of any kind, 0 effluent exceedances.
  • Polychlorinated biphenyls [PCBs]: 1 limit, 3 violations of any kind, 0 effluent exceedances.
  • March 10, 2026: Letter of Violation/ Warning Letter (State).
  • February 10, 2026: Reporting Violations - Improper/ Incorrect Reporting (ST6).
  • February 10, 2026: Management Practice Violations - Improper Operation and Maintenance (ST6).
  • February 10, 2026: Management Practice Violations - Failure to Maintain Records (ST6).
  • February 10, 2026: Evaluation (S).
  • August 9, 2018: Management Practice Violations - Failure to Maintain Records (ST6).
  • August 9, 2018: Reporting Violations - Failure to Notify (ST6).
  • August 9, 2018: Monitoring Violations - Frequency of Sampling Violation (ST6).
  • August 9, 2018: Monitoring Violations - Improper Analysis or Lab Error (ST6).
  • August 9, 2018: Management Practice Violations - Improper Operation and Maintenance (ST6).

USFWS-ENNIS NAT FISH HATCHERY among its neighbors

EPA’s permit file holds 1 discharge permits in the Madison River-Upper O'Dell Creek subwatershed (HUC 100200071202), MTG130008 among them. Its county holds 89, 0 of them major permits; MTG130008 is a minor permit.

Identity

Facility as filedUSFWS-ENNIS NAT FISH HATCHERY
Permittee as filedUSFWS ENNIS NAT FISH HATCHERY
NPDES IDMTG130008
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeFederal facility
IssuedAugust 23, 2011
Expiration dateJune 30, 2016
Issuing agencyMONTANA DEQ
AddressEnnis, MT 59729
Receiving waterBLAINE SPRING CREEK
Receiving water impaired303(D) Listed
SubwatershedMadison River-Upper O'Dell Creek (HUC 100200071202)
SIC0921 – Fish Hatcheries And Preserves

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
Nitrogen, total [as N]0150
Nitrogen, Kjeldahl, total [as N]0150
Nitrite + Nitrate total [as N]0150
Phosphorus, total [as P]0150
Flow rate280
Fish feed used280
Solids, total suspended160
Polychlorinated biphenyls [PCBs]130

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTG130008.

Inspections, violations and enforcement

DateWhat EPA recordedAgency
February 10, 2026Reporting Violations - Improper/ Incorrect ReportingST6
February 10, 2026Management Practice Violations - Improper Operation and MaintenanceST6
February 10, 2026Management Practice Violations - Failure to Maintain RecordsST6
August 9, 2018Management Practice Violations - Failure to Maintain RecordsST6
August 9, 2018Reporting Violations - Failure to NotifyST6
August 9, 2018Monitoring Violations - Frequency of Sampling ViolationST6
August 9, 2018Monitoring Violations - Improper Analysis or Lab ErrorST6
August 9, 2018Management Practice Violations - Improper Operation and MaintenanceST6

Inspections

DateWhat EPA recordedAgency
February 10, 2026EvaluationS

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

DateWhat EPA recordedAgency
March 10, 2026Letter of Violation/ Warning LetterState

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Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES MTG130008, held by USFWS-ENNIS NAT FISH HATCHERY in Ennis, MT, which discharges to Blaine Spring Creek, a 303(d) listed receiving water. The permit is administratively continued, with a minor discharger class of 4, zero pollutants under a numeric limit, and zero pollutants with an effluent exceedance.