Clean Water Act discharge permit · NPDES MT0030147
ASARCO - METG - EAST HELENA SMELTER, East Helena, MT: NPDES MT0030147 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 23Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
ASARCO - METG - EAST HELENA SMELTER, held by MONTANA ENVIRONMENTAL TRUST GROUP LLC, holds NPDES permit MT0030147, which discharges to Prickly Pear Creek. EPA’s file records it issued November 1, 1996 and expiring September 30, 2001. 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 | ASARCO - METG - EAST HELENA SMELTER |
|---|---|
| Permittee as filed | MONTANA ENVIRONMENTAL TRUST GROUP LLC |
| NPDES ID | MT0030147 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | November 1, 1996 |
| Expiration date | September 30, 2001 |
| Issuing agency | MONTANA DEQ |
| Address | East Helena, MT 59635 |
| Receiving water | PRICKLY PEAR CREEK |
| Subwatershed | Lower Prickley Pear Gulch (HUC 100301011310) |
| Other EPA IDs (FRS) | RCRA handler MTD006230346 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 23Pollutants on file
- 23Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 8 | 6 | 3 | October 31, 1998 | 230% over the limit |
| Lead, total recoverable | 12 | 3 | 3 | July 31, 2003 | 560% over the limit |
| BOD, 5-day, 20 deg. C | 5 | 3 | 3 | May 31, 2001 | 124% over the limit |
| Iron, total recoverable | 11 | 2 | 2 | March 31, 1999 | 115% over the limit |
| Arsenic, total recoverable | 8 | 2 | 2 | October 31, 1998 | 221% over the limit |
| pH | 6 | 1 | 1 | March 31, 2014 | |
| Zinc, total recoverable | 8 | 3 | 0 | ||
| Antimony, total recoverable | 11 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 9 | 1 | 0 | ||
| Manganese, total recoverable | 13 | 0 | 0 | ||
| Thallium, total recoverable | 12 | 0 | 0 | ||
| Mercury, total recoverable | 12 | 0 | 0 | ||
| Flow rate | 8 | 0 | 0 | ||
| Selenium, total recoverable | 8 | 0 | 0 | ||
| Cadmium, total recoverable | 8 | 0 | 0 | ||
| Copper, total recoverable | 8 | 0 | 0 | ||
| Oxygen demand, chem. [high level] [COD] | 4 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 3 | 0 | 0 | ||
| Aluminum, dissolved [as Al] | 3 | 0 | 0 | ||
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| Silver total recoverable | 2 | 0 | 0 | ||
| Oil and grease visual | 2 | 0 | 0 | ||
| Coliform, fecal general | 1 | 0 | 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 MT0030147.
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 MT0030147 there.
Nearby on the register
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- Every permit record in East Helena, A to Z
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- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.