Clean Water Act discharge permit · NPDES MTR000470
BAKER READY MIX FACILITY, Baker, MT: NPDES MTR000470 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 2Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
BAKER READY MIX FACILITY, held by DIAMOND J REDI-MIX, holds NPDES permit MTR000470, which discharges to Sandstone Creek. EPA’s file records it issued September 19, 2018 and expiring January 31, 2023. 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 | BAKER READY MIX FACILITY |
|---|---|
| Permittee as filed | DIAMOND J REDI-MIX |
| NPDES ID | MTR000470 |
| 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 | September 19, 2018 |
| Expiration date | January 31, 2023 |
| Address | Baker, MT 59313 |
| Receiving water | SANDSTONE CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Headwaters Sandstone Creek (HUC 101000050501) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 2Under a numeric limit
- 15With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 1 | 33 | 0 | ||
| Flow rate | 0 | 20 | 0 | ||
| pH | 0 | 20 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 20 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 20 | 0 | ||
| Arsenic, total recoverable | 0 | 20 | 0 | ||
| Iron, total recoverable | 0 | 20 | 0 | ||
| Zinc, total recoverable | 0 | 20 | 0 | ||
| Lead, total recoverable | 0 | 20 | 0 | ||
| Chromium, total recoverable | 0 | 20 | 0 | ||
| Copper, total recoverable | 0 | 20 | 0 | ||
| Total phenols | 0 | 20 | 0 | ||
| Chemical Oxygen Demand [COD] | 0 | 20 | 0 | ||
| Oil and grease visual | 0 | 20 | 0 | ||
| Iron, total [as Fe] | 1 | 11 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTR000470.
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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 21, 2025 | WW Storm Water Non-Construction - CWA §308 Failure to submit required permit application info | ST6 |
| May 21, 2025 | WW Storm Water Non-Construction - Failure to develop any or adequate SWPPP/SWMP | ST6 |
| May 21, 2025 | WW Storm Water Non-Construction - Failure to submit required report (non-DMR) | ST6 |
| May 21, 2025 | WW Storm Water Non-Construction - Failure to Maintain Records | ST6 |
| May 21, 2025 | WW Storm Water Non-Construction - Failure to Implement SWPPP/SWMP | ST6 |
| May 21, 2025 | WW Storm Water Non-Construction - Failure to properly install/implement BMPs | ST6 |
| May 21, 2025 | WW Storm Water Non-Construction - Failure to Conduct Inspections | 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, MTR000470.
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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 MTR000470 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.