Clean Water Act discharge permit · NPDES MOG491336
LIBERTY AGGREGATES LLC, Liberty, MO: NPDES MOG491336 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
LIBERTY AGGREGATES LLC, held by Liberty Aggregates, LLC, holds NPDES permit MOG491336, which discharges to Tributary To Shoal Cr.. EPA’s file records it issued August 1, 2017 and expiring April 30, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | LIBERTY AGGREGATES LLC |
|---|---|
| Permittee as filed | Liberty Aggregates, LLC |
| NPDES ID | MOG491336 |
| 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 | August 1, 2017 |
| Expiration date | April 30, 2022 |
| Address | Liberty, MO 64068 |
| Receiving water | Tributary to Shoal Cr. |
| Subwatershed | Lower Shoal Creek (HUC 103001010304) |
| SIC | 1429 – Crushed And Broken Stone |
| Other EPA IDs (FRS) | ICIS-AIR source MO0000002904700198 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 6Pollutants on file
- 0Under a numeric limit
- 6With 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 | 0 | 8 | 0 | ||
| Solids, total suspended | 0 | 8 | 0 | ||
| Solids, settleable | 0 | 8 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 0 | 8 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 4 | 0 | ||
| Storm water flow | 0 | 4 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MOG491336.
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 |
|---|---|---|
| September 30, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| March 24, 2017 | Reporting Violations - Failure to Submit 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.
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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 MOG491336 there.
Nearby on the register
- Discharge permits in Liberty
- Every permit record in Liberty, A to Z
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- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.