Clean Water Act discharge permit · NPDES MT0030066
COLUMBIA FALLS ALUMINUM CO, Columbia Falls, MT: NPDES MT0030066 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
COLUMBIA FALLS ALUMINUM CO holds NPDES permit MT0030066, which discharges to Flathead River. EPA’s file records it issued January 4, 1999 and expiring January 31, 2004. 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 | COLUMBIA FALLS ALUMINUM CO |
|---|---|
| Permittee as filed | COLUMBIA FALLS ALUMINUM CO |
| NPDES ID | MT0030066 |
| 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 | January 4, 1999 |
| Expiration date | January 31, 2004 |
| Issuing agency | MONTANA DEQ |
| Address | Columbia Falls, MT 59912 |
| Receiving water | FLATHEAD RIVER |
| Subwatershed | Cedar Creek (HUC 170102080102) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 21Pollutants on file
- 13Under a numeric limit
- 18With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 1 | 4 | 1 | August 31, 2003 | 137% over the limit |
| Fluoride, total [as F] | 23 | 21 | 0 | ||
| Nickel, total recoverable | 9 | 21 | 0 | ||
| Aluminum, total recoverable | 12 | 20 | 0 | ||
| Flow, in conduit or thru treatment plant | 5 | 13 | 0 | ||
| Aluminum, dissolved [as Al] | 0 | 11 | 0 | ||
| Cyanide [A] | 0 | 10 | 0 | ||
| pH | 17 | 9 | 0 | ||
| Benzo[a]pyrene | 8 | 9 | 0 | ||
| Flow rate | 0 | 8 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 4 | 0 | ||
| Solids, total suspended | 1 | 3 | 0 | ||
| Duration of discharge | 0 | 3 | 0 | ||
| Antimony, total recoverable | 9 | 2 | 0 | ||
| Cyanide, total [as CN] | 15 | 1 | 0 | ||
| Oil and grease, hexane extr method | 0 | 1 | 0 | ||
| Fluoride | 0 | 1 | 0 | ||
| Copper, total recoverable | 0 | 1 | 0 | ||
| Specific conductance | 12 | 0 | 0 | ||
| Water level at sample collection time | 12 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 3 | 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 MT0030066.
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 MT0030066 there.
Nearby on the register
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- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.