Clean Water Act discharge permit · NPDES MTG070664
CHS INC LAUREL REFINERY DEWATERING, Laurel, MT: NPDES MTG070664 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
CHS INC LAUREL REFINERY DEWATERING, held by CHS INC, holds NPDES permit MTG070664, which discharges to Clarks Fork Ditch. EPA’s file records it issued March 10, 2020 and expiring February 28, 2025. 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 | CHS INC LAUREL REFINERY DEWATERING |
|---|---|
| Permittee as filed | CHS INC |
| NPDES ID | MTG070664 |
| 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 |
| Issued | March 10, 2020 |
| Expiration date | February 28, 2025 |
| Address | Laurel, MT 59044 |
| Receiving water | CLARKS FORK DITCH |
| Subwatershed | Yellowstone River-Indian Creek (HUC 100700040602) |
| Other EPA IDs (FRS) | RCRA handler MTD006238083; ICIS-AIR source MT0000003011100012 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 4Pollutants on file
- 4Under a numeric limit
- 4With 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 |
|---|---|---|---|---|---|
| Turbidity | 2 | 5 | 1 | September 30, 2010 | |
| Oil & Grease | 1 | 2 | 0 | ||
| Oil and grease visual | 1 | 2 | 0 | ||
| Outfall observation,visual, y/n response | 1 | 2 | 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 MTG070664.
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 MTG070664 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.