Clean Water Act discharge permit · NPDES MTX000225
TIMBER WORKS ESTATES SUBDIVISION, Helena, MT: NPDES MTX000225 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
TIMBER WORKS ESTATES SUBDIVISION, held by FRONTIER BUILDERS INC, holds NPDES permit MTX000225, which discharges to State Groundwater. EPA’s file records it issued March 5, 2012 and expiring April 30, 2017. 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 | TIMBER WORKS ESTATES SUBDIVISION |
|---|---|
| Permittee as filed | FRONTIER BUILDERS INC |
| NPDES ID | MTX000225 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | State-issued individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 5, 2012 |
| Expiration date | April 30, 2017 |
| Address | Helena, MT 59602 |
| Receiving water | STATE GROUNDWATER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Last Chance Gulch (HUC 100301011309) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 14Pollutants on file
- 13Under a numeric limit
- 14With 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 |
|---|---|---|---|---|---|
| Nitrogen, total [as N] | 4 | 270 | 78 | May 31, 2026 | 1,032% over the limit |
| Nitrogen, Kjeldahl, total [as N] | 5 | 162 | 0 | ||
| Nitrite + Nitrate total [as N] | 5 | 162 | 0 | ||
| Phosphorus, total [as P] | 6 | 139 | 0 | ||
| Flow rate | 2 | 100 | 0 | ||
| Solids, total suspended | 2 | 78 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 77 | 0 | ||
| Specific conductance | 2 | 40 | 0 | ||
| Chloride [as Cl] | 2 | 40 | 0 | ||
| Solids, total dissolved [TDS] | 2 | 37 | 0 | ||
| pH | 1 | 11 | 0 | ||
| E. coli, MTEC-MF | 1 | 8 | 0 | ||
| Water level at sample collection time | 1 | 8 | 0 | ||
| Solids, total dissolved | 0 | 3 | 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
- 10Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 2, 2025 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| April 2, 2025 | Effluent Violations - Unauthorized Discharge | ST6 |
| September 23, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 23, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| September 23, 2024 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| September 23, 2024 | Reporting Violations - Failure to Submit DMRs | ST6 |
| September 23, 2024 | Monitoring Violations - No Flow Measurement Device | ST6 |
| September 23, 2024 | Effluent Violations - Unapproved Bypass | ST6 |
| September 23, 2024 | Monitoring Violations - Analysis not Conducted | ST6 |
| September 23, 2024 | Reporting Violations - Improper/ Incorrect Reporting | 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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MTX000225.
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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 MTX000225 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.