Clean Water Act discharge permit · NPDES MORA23751
WALNUT GROVE, Dardenne Prairie, MO: NPDES MORA23751 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
WALNUT GROVE, held by Rolwes Development, LLC, holds NPDES permit MORA23751, which discharges to Tributary To Lake St. Louis. EPA’s file records it issued March 13, 2023 and expiring February 7, 2027. 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 | WALNUT GROVE |
|---|---|
| Permittee as filed | Rolwes Development, LLC |
| NPDES ID | MORA23751 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Construction stormwater |
| Issued | March 13, 2023 |
| Expiration date | February 7, 2027 |
| Address | Dardenne Prairie, MO 63368 |
| Receiving water | Tributary to Lake St. Louis |
| Subwatershed | Headwaters Peruque Creek (HUC 071100090101) |
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 MORA23751.
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 |
|---|---|---|
| June 20, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| June 20, 2024 | Effluent Violations - Narrative Effluent Violation | 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.
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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 MORA23751 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.