Clean Water Act discharge permit · NPDES MTG071399

ST. VINCENT HOSPITAL, Billings, MT: NPDES MTG071399 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
5Pollutants under a numeric limit
0Pollutants with an effluent exceedance

ST. VINCENT HOSPITAL, held by Layton Construction, holds NPDES permit MTG071399, which discharges to Yegen Drain. EPA’s file records it issued October 8, 2025 and expiring April 30, 2030. 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 ST. VINCENT HOSPITAL: its NPDES ID, its permit type and status, its dates, its address in Billings, Montana, its receiving water, and 5 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTG071399.

Identity

Facility as filed	ST. VINCENT HOSPITAL
Permittee as filed	Layton Construction
NPDES ID	MTG071399
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	October 8, 2025
Expiration date	April 30, 2030
Address	Billings, MT 59101
Receiving water	YEGEN DRAIN
Subwatershed	Yellowstone River-Billings (HUC 100700041006)
Other EPA IDs (FRS)	RCRA handler MTD156204398

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

5Pollutants on file
5Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Turbidity	4	0	0
Oil & Grease	2	0	0
Duration	2	0	0
Oil and grease visual	2	0	0
Outfall observation,visual, y/n response	2	0	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTG071399.

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTG071399.

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, MTG071399.

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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 MTG071399 there.

Nearby on the register

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

This public-records page covers NPDES permit MTG071399 for ST. VINCENT HOSPITAL in Billings, MT, held by Layton Construction, with a status of Effective, a Minor discharger class, and a coverage under a general permit. The register lists 5 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, with the permit issued October 8, 2025 and expiring April 30, 2030.