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Clean Water Act discharge permit · NPDES MTG770133

BAKER T&S HYDROSTATIC TEST, Billings, MT: NPDES MTG770133 discharge permit, effluent exceedances, inspections, penalties

BAKER T&S HYDROSTATIC TEST, held by WBI ENERGY TRANSMISSION INC, holds NPDES permit MTG770133, which discharges to Yellowstone River. EPA’s file records it issued September 4, 2024 and expiring December 31, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for BAKER T&S HYDROSTATIC TEST: its NPDES ID, its permit type and status, its dates, its address in Billings, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTG770133.

Identity

Facility as filedBAKER T&S HYDROSTATIC TEST
Permittee as filedWBI ENERGY TRANSMISSION INC
NPDES IDMTG770133
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
IssuedSeptember 4, 2024
Expiration dateDecember 31, 2025
AddressBillings, MT 59102
Receiving waterYELLOWSTONE RIVER
SubwatershedYellowstone River-Billings (HUC 100700041006)

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 MTG770133.

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 MTG770133.

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, MTG770133.

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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 MTG770133 there.

Nearby on the register

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

What this page shows

Of the 22 general permit coverages in Yellowstone County, including BAKER T&S HYDROSTATIC TEST, 68.2% were issued before this permit. The Yellowstone River-Billings subwatershed under HUC 100700041006 holds 157 NPDES permits, and 41.7% of the 36 general permit coverages in Yellowstone County carry a violation on file.