Clean Water Act discharge permit · NPDES MO0105732
MAGNITUDE 7 METALS LLC, Marston, MO: NPDES MO0105732 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 10Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
MAGNITUDE 7 METALS LLC, held by Magnitude 7 Metals LLC, holds NPDES permit MO0105732, which discharges to Tributary To Mississippi R.. EPA’s file records it issued October 1, 2019 and expiring September 30, 2024. 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 | MAGNITUDE 7 METALS LLC |
|---|---|
| Permittee as filed | Magnitude 7 Metals LLC |
| NPDES ID | MO0105732 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | October 1, 2019 |
| Expiration date | September 30, 2024 |
| Address | Marston, MO 63866 |
| Receiving water | Tributary to Mississippi R. |
| Subwatershed | Donaldson Point-Mississippi River (HUC 080101000301) |
| SIC | 3334 – Primary Aluminum |
| Other EPA IDs (FRS) | RCRA handler MOD093750966; ICIS-AIR source MO0000002914300008 |
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
- 17Pollutants on file
- 10Under a numeric limit
- 17With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Aluminum, total recoverable | 12 | 38 | 18 | January 31, 2023 | 3,109% over the limit |
| Solids, total suspended | 10 | 88 | 8 | March 31, 2016 | 1,526% over the limit |
| Oil and grease [soxhlet extr.] tot. | 6 | 17 | 3 | September 30, 2007 | 107% over the limit |
| Fluoride, total [as F] | 8 | 26 | 2 | June 30, 2014 | 421% over the limit |
| Benzo[a]pyrene | 8 | 18 | 2 | March 31, 2016 | 180% over the limit |
| pH | 10 | 25 | 1 | September 30, 2007 | |
| Flow, in conduit or thru treatment plant | 2 | 26 | 0 | ||
| Nickel, total recoverable | 8 | 20 | 0 | ||
| Antimony, total recoverable | 8 | 12 | 0 | ||
| Flow | 8 | 8 | 0 | ||
| Cyanide, total [as CN] | 0 | 2 | 0 | ||
| Nickel, total [as Ni] | 0 | 2 | 0 | ||
| Aluminum, total [as Al] | 0 | 2 | 0 | ||
| Rainfall | 0 | 2 | 0 | ||
| Temperature, water deg. fahrenheit | 0 | 1 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 1 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 1 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 25, 2024 | 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.
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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 MO0105732 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.