Clean Water Act discharge permit · NPDES MOG491405
SS STONE AND DESIGN LLC, Hillsboro, MO: NPDES MOG491405 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
SS STONE AND DESIGN LLC, held by SS Stone and Design, LLC, holds NPDES permit MOG491405, which discharges to Tributary To Little Creek. EPA’s file records it issued March 1, 2018 and expiring April 30, 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.
Identity
| Facility as filed | SS STONE AND DESIGN LLC |
|---|---|
| Permittee as filed | SS Stone and Design, LLC |
| NPDES ID | MOG491405 |
| 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 | Industrial stormwater |
| Issued | March 1, 2018 |
| Expiration date | April 30, 2022 |
| Address | Hillsboro, MO 63050 |
| Receiving water | Tributary to Little Creek |
| Subwatershed | Lower Joachim Creek (HUC 071401010804) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 5Pollutants on file
- 5Under a numeric limit
- 5With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 2 | 28 | 6 | March 31, 2023 | 220% over the limit |
| Solids, settleable | 2 | 23 | 1 | December 31, 2024 | 40% over the limit |
| pH | 2 | 22 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 22 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 22 | 0 |
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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 4, 2026 | Reporting Violations - Failure to Submit DMRs | ST6 |
| October 6, 2025 | WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMP | ST6 |
| March 31, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| December 30, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| September 15, 2020 | WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMP | ST6 |
| September 15, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| March 30, 2020 | Reporting Violations - Failure to Submit DMRs | ST6 |
| March 30, 2020 | Reporting Violations - Improper/ Incorrect Reporting | 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 MOG491405 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.