Clean Water Act discharge permit · NPDES OR0030694
MT VERNON STP, Mount Vernon, OR: NPDES OR0030694 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MT VERNON STP, held by MT. VERNON, CITY OF, holds NPDES permit OR0030694, which discharges to John Day River. EPA’s file records it issued December 29, 2011 and expiring November 30, 2016. 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.
Identity
| Facility as filed | MT VERNON STP |
|---|---|
| Permittee as filed | MT. VERNON, CITY OF |
| NPDES ID | OR0030694 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 29, 2011 |
| Expiration date | November 30, 2016 |
| Address | Mount Vernon, OR 97865 |
| Receiving water | JOHN DAY RIVER |
| Subwatershed | Clark Creek-John Day River (HUC 170702010904) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 12Pollutants on file
- 12Under 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 6 | 0 | 0 | ||
| Solids, total suspended | 6 | 0 | 0 | ||
| pH | 4 | 0 | 0 | ||
| E. coli | 4 | 0 | 0 | ||
| Temperature, water deg. centigrade | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Flow rate | 1 | 0 | 0 | ||
| Chlorine, total residual | 1 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 1 | 0 | 0 | ||
| Chlorine usage | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES OR0030694.
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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 1, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| April 1, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
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, OR0030694.
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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 OR0030694 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.