Clean Water Act discharge permit · NPDES MTR300103
AMERICAN COLLOID CO - ALZADA MINE, Alzada, MT: NPDES MTR300103 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
AMERICAN COLLOID CO - ALZADA MINE, held by AMERICAN COLLOID CO, holds NPDES permit MTR300103, which discharges to Little Missouri River. EPA’s file records it issued March 11, 2003 and expiring November 16, 2007. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | AMERICAN COLLOID CO - ALZADA MINE |
|---|---|
| Permittee as filed | AMERICAN COLLOID CO |
| NPDES ID | MTR300103 |
| 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 | March 11, 2003 |
| Expiration date | November 16, 2007 |
| Issuing agency | MONTANA DEQ |
| Address | Alzada, MT 59311 |
| Receiving water | LITTLE MISSOURI RIVER |
| Subwatershed | Little Missouri Creek-Gaff Creek (HUC 101102010302) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 5Pollutants on file
- 0Under 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 |
|---|---|---|---|---|---|
| Flow rate | 0 | 2 | 0 | ||
| pH | 0 | 2 | 0 | ||
| Solids, total suspended | 0 | 2 | 0 | ||
| Oil and grease, hexane extr method | 0 | 2 | 0 | ||
| Report due [yrmoda] | 0 | 2 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTR300103.
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 MTR300103.
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 MTR300103 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.