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Clean Water Act discharge permit · NPDES MTG370387

GROVER PLACER MINING, Townsend, MT: NPDES MTG370387 discharge permit, effluent exceedances, inspections, penalties

GROVER PLACER MINING, held by Grover Placer Mining, holds NPDES permit MTG370387, which discharges to Avalanche Creek. 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.

What the register holds for GROVER PLACER MINING: its NPDES ID, its permit type and status, its its address in Townsend, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTG370387.

Identity

Facility as filedGROVER PLACER MINING
Permittee as filedGrover Placer Mining
NPDES IDMTG370387
Permit statusNot needed
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
AddressTownsend, MT 59644
Receiving waterAVALANCHE CREEK
SubwatershedAvalanche Creek (HUC 100301011202)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTG370387.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTG370387.

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, MTG370387.

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  • One permit holder — $99/month
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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 MTG370387 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

Grover Placer Mining is one of 2 NPDES permits in the Avalanche Creek subwatershed, this one included. It is also one of 9 general permit coverages in Broadwater County on the register, and none of the 9 general permit coverages in that county have a violation on file, at 0.0%.