Clean Water Act discharge permit · NPDES MI0060264
RATHMOURNE DAIRY 2-CAFO, Port Hope, MI: NPDES MI0060264 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
RATHMOURNE DAIRY 2-CAFO, held by Rathmourne Dairy, LLC, holds NPDES permit MI0060264. EPA’s file records it issued April 30, 2024 and expiring October 1, 2028. 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 | RATHMOURNE DAIRY 2-CAFO |
|---|---|
| Permittee as filed | Rathmourne Dairy, LLC |
| NPDES ID | MI0060264 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 30, 2024 |
| Expiration date | October 1, 2028 |
| Issuing agency | State |
| Address | Port Hope, MI 48468 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Willow Creek (HUC 040801040103) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 15Under a numeric limit
- 13With 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 |
|---|---|---|---|---|---|
| pH | 6 | 78 | 0 | ||
| Oxygen, dissolved [DO] | 3 | 39 | 0 | ||
| BOD, 5-day, 20 deg. C | 3 | 39 | 0 | ||
| Nitrogen, nitrite total [as N] | 3 | 39 | 0 | ||
| Nitrogen, nitrate total [as N] | 3 | 39 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 3 | 39 | 0 | ||
| Nitrogen, inorganic total | 3 | 39 | 0 | ||
| Chloride [as Cl] | 3 | 39 | 0 | ||
| Sulfate, total [as SO4] | 3 | 39 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 3 | 39 | 0 | ||
| Nitrogen, ammonia [NH3-N] | 3 | 39 | 0 | ||
| Phosphorus, Total | 3 | 39 | 0 | ||
| Sodium-o-PPTH | 3 | 39 | 0 | ||
| Flow rate, instantaneous | 3 | 0 | 0 | ||
| Spray irrigation, application rate | 3 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MI0060264.
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 |
|---|---|---|
| February 21, 2026 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 21, 2025 | 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
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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 MI0060264 there.
Nearby on the register
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- Every permit record in Port Hope, A to Z
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- Every permit record in Michigan, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.