Clean Water Act discharge permit · NPDES MOG490452
CENTRAL CONCRETE COMPANY - MAIN PLANT, Columbia, MO: NPDES MOG490452 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
CENTRAL CONCRETE COMPANY - MAIN PLANT, held by Central Concrete Company, holds NPDES permit MOG490452, which discharges to Tributary To Bear Cr.. EPA’s file records it issued May 1, 2022 and expiring April 30, 2027. 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 | CENTRAL CONCRETE COMPANY - MAIN PLANT |
|---|---|
| Permittee as filed | Central Concrete Company |
| NPDES ID | MOG490452 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | May 1, 2022 |
| Expiration date | April 30, 2027 |
| Address | Columbia, MO 65201 |
| Receiving water | Tributary to Bear Cr. |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Middle Hinkson Creek (HUC 103001020602) |
| NAICS | 327320 – Ready-Mix Concrete Manufacturing |
| SIC | 3273 – Ready-Mixed Concrete |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 5Pollutants on file
- 0Under a numeric limit
- 5With a violation of any kind
- 4With 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 | 35 | 23 | June 30, 2026 | |
| Solids, total suspended | 0 | 34 | 22 | June 30, 2026 | 294% over the limit |
| Solids, settleable | 0 | 18 | 8 | June 30, 2026 | 680% over the limit |
| Oil and grease [soxhlet extr.] tot. | 0 | 14 | 2 | June 30, 2023 | 734% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 12 | 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
- 12Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 1, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| April 13, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| April 13, 2026 | Permit Violations - Unapproved Operation | ST6 |
| December 30, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| September 29, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| June 27, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| December 31, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| March 29, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| March 29, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| March 29, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| February 23, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
| February 23, 2018 | WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMP | 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 MOG490452 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.