Clean Water Act discharge permit · NPDES MOG490342
OZARK BUILDING MATERIALS PLANT 07 KNOX, St. Louis, MO: NPDES MOG490342 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
OZARK BUILDING MATERIALS PLANT 07 KNOX, held by Raineri Building Material, Inc., holds NPDES permit MOG490342, which discharges to River Des Peres. EPA’s file records it issued June 23, 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 | OZARK BUILDING MATERIALS PLANT 07 KNOX |
|---|---|
| Permittee as filed | Raineri Building Material, Inc. |
| NPDES ID | MOG490342 |
| 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 | June 23, 2022 |
| Expiration date | April 30, 2027 |
| Address | St. Louis, MO 63139 |
| Receiving water | River des Peres |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | River Des Peres (HUC 071401010506) |
| SIC | 3273 – Ready-Mixed Concrete |
| Other EPA IDs (FRS) | ICIS-AIR source MO0000002951001671 |
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
- 5Pollutants on file
- 5Under 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 | 4 | 40 | 32 | March 31, 2026 | |
| Solids, total suspended | 4 | 24 | 20 | March 31, 2026 | 257% over the limit |
| Solids, settleable | 4 | 12 | 8 | December 31, 2023 | 1,033% over the limit |
| Oil and grease [soxhlet extr.] tot. | 4 | 9 | 1 | June 30, 2020 | 10% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 8 | 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
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 7, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| December 26, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| March 27, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| December 29, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| June 29, 2020 | Effluent Violations - Numeric 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.
Watch this permit
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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 MOG490342 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.