Clean Water Act discharge permit · NPDES MOG490500
SOUTHWEST MATERIALS, Ozark, MO: NPDES MOG490500 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
SOUTHWEST MATERIALS, held by Table Rock Asphalt Construction Co Inc., holds NPDES permit MOG490500, which discharges to Tributary To James R.. EPA’s file records it issued September 1, 2017 and expiring April 30, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SOUTHWEST MATERIALS |
|---|---|
| Permittee as filed | Table Rock Asphalt Construction Co Inc. |
| NPDES ID | MOG490500 |
| 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 | September 1, 2017 |
| Expiration date | April 30, 2022 |
| Address | Ozark, MO 65721 |
| Receiving water | Tributary to James R. |
| Subwatershed | Ward Branch-James River (HUC 110100020304) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 6Pollutants on file
- 5Under a numeric limit
- 6With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Oil and grease [soxhlet extr.] tot. | 2 | 43 | 1 | September 30, 2009 | 35% over the limit |
| pH | 2 | 42 | 0 | ||
| Solids, total suspended | 2 | 42 | 0 | ||
| Solids, settleable | 2 | 42 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 40 | 0 | ||
| Storm water flow | 0 | 2 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MOG490500.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 MOG490500 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.