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Clean Water Act discharge permit · NPDES MTR107033

CITY OF BIG TIMBER 2017 WATEWATER SYSTEM IMPROVEMENTS, Big Timber, MT: NPDES MTR107033 discharge permit, effluent exceedances, inspections, penalties

CITY OF BIG TIMBER 2017 WATEWATER SYSTEM IMPROVEMENTS, held by DIAMOND CONSTRUCTION INC, holds NPDES permit MTR107033, which discharges to Upper Yellowstone. EPA’s file records it issued August 22, 2017 and expiring December 31, 2017. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for CITY OF BIG TIMBER 2017 WATEWATER SYSTEM IMPROVEMENTS: its NPDES ID, its permit type and status, its dates, its address in Big Timber, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR107033.

Identity

Facility as filedCITY OF BIG TIMBER 2017 WATEWATER SYSTEM IMPROVEMENTS
Permittee as filedDIAMOND CONSTRUCTION INC
NPDES IDMTR107033
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
ProgramConstruction stormwater
IssuedAugust 22, 2017
Expiration dateDecember 31, 2017
Issuing agencyMT DEQ
AddressBig Timber, MT 59011
Receiving waterUpper Yellowstone
Receiving water impaired303(D) Listed
SubwatershedBoulder River-Cherry Creek (HUC 100700020909)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR107033.

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 MTR107033.

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

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MTR107033.

Start the watch

How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

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 MTR107033 there.

Nearby on the register

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