Clean Water Act discharge permit · NPDES MTG490009
SAND BOX, Great Falls, MT: NPDES MTG490009 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
SAND BOX, held by JOHN L KISER, holds NPDES permit MTG490009, which discharges to Missouri River. EPA’s file records it issued June 20, 2007 and expiring June 30, 2012. 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 | SAND BOX |
|---|---|
| Permittee as filed | JOHN L KISER |
| NPDES ID | MTG490009 |
| 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 | June 20, 2007 |
| Expiration date | June 30, 2012 |
| Issuing agency | MONTANA DEQ |
| Address | Great Falls, MT 59403 |
| Receiving water | MISSOURI RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Missouri River-Great Falls (HUC 100301021201) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 6Under a numeric limit
- 8With a violation of any kind
- 2With 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 | 9 | 114 | 7 | October 31, 2010 | |
| Flow rate | 4 | 30 | 3 | September 30, 2009 | 263% over the limit |
| pH | 2 | 45 | 0 | ||
| Oil and grease visual | 1 | 22 | 0 | ||
| Oil and grease, hexane extr method | 1 | 16 | 0 | ||
| Duration of discharge | 1 | 15 | 0 | ||
| Solids, total suspended | 0 | 14 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 7 | 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 MTG490009.
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 MTG490009 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.