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Clean Water Act discharge permit · NPDES WVG671051

MOSAD004 PIPELINE, West Union, WV: NPDES WVG671051 discharge permit, effluent exceedances, inspections, penalties

MOSAD004 PIPELINE, held by EQM GATHERING OPCO, LLC, holds NPDES permit WVG671051, which discharges to Natural Drainage/Arnold Ck/Middle Island Ck/Ohio R. EPA’s file records it issued August 23, 2024 and expiring May 11, 2027.

MOSAD004 PIPELINE, West Union, West Virginia: Coverage under a general permit WVG671051, held by EQM GATHERING OPCO, LLC; Effective; issued August 23, 2024, term to May 11, 2027; discharges to Natural Drainage/Arnold Ck/Middle Island Ck/Ohio R.

  • pH: 2 limits, 2 violations of any kind, 0 effluent exceedances.
  • Solids, total suspended: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Oil & Grease: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Flow, in conduit or thru treatment plant: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Chlorine, total residual: 1 limit, 1 violation of any kind, 0 effluent exceedances.

Other permits held by EQM GATHERING OPCO, LLC

MOSAD004 PIPELINE among its neighbors

EPA’s permit file holds 2 discharge permits in the Arnold Creek subwatershed (HUC 050302010405), WVG671051 among them. Its county holds 27, 0 of them major permits; WVG671051 is a minor permit.

Other permits in the Arnold Creek subwatershed (HUC 050302010405)

Identity

Facility as filedMOSAD004 PIPELINE
Permittee as filedEQM GATHERING OPCO, LLC
NPDES IDWVG671051
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedAugust 23, 2024
Expiration dateMay 11, 2027
AddressWest Union, WV 26456
Receiving waterNatural Drainage/Arnold Ck/Middle Island Ck/Ohio R
SubwatershedArnold Creek (HUC 050302010405)

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
pH220
Solids, total suspended110
Oil & Grease110
Flow, in conduit or thru treatment plant110
Chlorine, total residual110

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES WVG671051.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES WVG671051.

Inspections

EPA’s inspection file holds no inspection for NPDES WVG671051.

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

EPA’s informal enforcement file holds no action for NPDES WVG671051.

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Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES WVG671051, held by EQM GATHERING OPCO, LLC for MOSAD004 PIPELINE in West Union, WV, with the permit listed as Effective and classed as a Minor Discharger. The page lists the permit's issue and expiration dates as of September 15, 2026, and reports 5 pollutants on file, 5 under a numeric limit, 5 with a violation of any kind, and 0 with an effluent exceedance. The receiving water is Natural Drainage/Arnold Ck/Middle Island Ck/Ohio R, within the Arnold Creek subwatershed (HUC 050302010405).