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Clean Water Act discharge permit · NPDES MTG770032

ONEOK BAKKEN PIPELINE PROJECT DISINFECTED WATER, Baker, MT: NPDES MTG770032 discharge permit, effluent exceedances, inspections, penalties

ONEOK BAKKEN PIPELINE PROJECT DISINFECTED WATER, held by ONEOK BAKKEN PIPELINE LLC, holds NPDES permit MTG770032, which discharges to Yellowstone River Etc. EPA’s file records it issued May 7, 2012 and expiring May 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 filedONEOK BAKKEN PIPELINE PROJECT DISINFECTED WATER
Permittee as filedONEOK BAKKEN PIPELINE LLC
NPDES IDMTG770032
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedMay 7, 2012
Expiration dateMay 31, 2015
Issuing agencyMONTANA DEQ
AddressBaker, MT 59313
Receiving waterYELLOWSTONE RIVER ETC
Receiving water impaired303(D) Listed
SubwatershedHeadwaters Cabin Creek (HUC 101000040502)
SIC1623 – Water, Sewer, And Utility Lines

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
Solids, total suspended54571March 31, 201313% over the limit
Turbidity54560
Oxidants, total residual54280
Toluene27280
Ethylbenzene27280
Xylene [mix of m+o+p]27280
Oil and grease visual27280
Benzene11280

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 MTG770032.

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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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 MTG770032 there.

Nearby on the register

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

What this page shows

This public-records page covers NPDES permit MTG770032, held by ONEOK BAKKEN PIPELINE LLC for the ONEOK BAKKEN PIPELINE PROJECT DISINFECTED WATER facility in Baker, MT, with a status of Effective and a Minor Discharger class. The register lists 1 pollutant under a numeric limit and 1 pollutant with an effluent exceedance, with the permit shown as issued May 7, 2012 and expiring May 31, 2015.