Clean Water Act discharge permit · NPDES MNR10I01U
SP4402-22 TH200 FROM MAHNOMEN TO ROY LAKE, Mahnomen, MN: NPDES MNR10I01U discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
SP4402-22 TH200 FROM MAHNOMEN TO ROY LAKE, held by Justin Knopf, holds NPDES permit MNR10I01U. EPA’s file records it issued December 28, 2021 and expiring February 15, 2022. 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 SP4402-22 TH200 FROM MAHNOMEN TO ROY LAKE: its NPDES ID, its permit type and status, its dates, its address in Mahnomen, Minnesota. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MNR10I01U.
Identity
| Facility as filed | SP4402-22 TH200 FROM MAHNOMEN TO ROY LAKE |
|---|---|
| Permittee as filed | Justin Knopf |
| NPDES ID | MNR10I01U |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Construction stormwater |
| Issued | December 28, 2021 |
| Expiration date | February 15, 2022 |
| Issuing agency | U.S. EPA |
| Address | Mahnomen, MN 56557 |
| Subwatershed | Church Lake-Wild Rice River (HUC 090201080601) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES MNR10I01U.
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 MNR10I01U.
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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- One state — $4,990/year
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How we handle your data → Privacy
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 MNR10I01U there.
Nearby on the register
- Discharge permits in Mahnomen
- Every permit record in Mahnomen, A to Z
- Discharge permits in Minnesota
- Every permit record in Minnesota, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.