Clean Water Act discharge permit · NPDES MOG490603
FISCHER MATERIALS, Gravois Mills, MO: NPDES MOG490603 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
FISCHER MATERIALS, held by FISCHER MATERIALS, INC., holds NPDES permit MOG490603, which discharges to Gravois Cr.. EPA’s file records it issued June 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 | FISCHER MATERIALS |
|---|---|
| Permittee as filed | FISCHER MATERIALS, INC. |
| NPDES ID | MOG490603 |
| 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 1, 2022 |
| Expiration date | April 30, 2027 |
| Address | Gravois Mills, MO 65037 |
| Receiving water | Gravois Cr. |
| Subwatershed | Gravois Creek (HUC 102901090402) |
| SIC | 1422 – Crushed And Broken Limestone |
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
- 5Under a numeric limit
- 5With 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 | 2 | 42 | 0 | ||
| Solids, total suspended | 2 | 42 | 0 | ||
| Solids, settleable | 2 | 42 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 42 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 42 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MOG490603.
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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 24, 2026 | 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.
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 MOG490603 there.
Nearby on the register
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- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.