Velarion Records
Follow this permit Velarion Records emails you this permit’s record, cited to the public filing, and tells you when the register changes it. Free.
We’ll email you a link to confirm. The continuous daily watch on every change is the paid alert. Unsubscribe any time.
Also free: The Pay Desk, the weekly executive pay briefing.

Clean Water Act discharge permit · NPDES MTX000242

LEWIS & CLARK CAVERSN STATE PARK UPPER VISITOR CENTER, Whitehall, MT: NPDES MTX000242 discharge permit, effluent exceedances, inspections, penalties

LEWIS & CLARK CAVERSN STATE PARK UPPER VISITOR CENTER, held by MONTANA FISH WILDLIFE AND PARKS LEWIS & CLARK CAVERNS STATE PARK, holds NPDES permit MTX000242, which discharges to Lower Jefferson River. EPA’s file records it issued March 5, 2018 and expiring April 30, 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 filedLEWIS & CLARK CAVERSN STATE PARK UPPER VISITOR CENTER
Permittee as filedMONTANA FISH WILDLIFE AND PARKS LEWIS & CLARK CAVERNS STATE PARK
NPDES IDMTX000242
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeState-issued individual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedMarch 5, 2018
Expiration dateApril 30, 2023
AddressWhitehall, MT 59759
Receiving waterLOWER JEFFERSON RIVER
SubwatershedJefferson River-Sappington (HUC 100200050802)

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

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Nitrogen, total [as N]240
Flow rate120
Nitrogen, ammonia total [as N]110
Nitrogen, Kjeldahl, total [as N]110
Nitrite + Nitrate total [as N]110

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTX000242.

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

DateWhat EPA recordedAgency
July 2, 2025Management Practice Violations - Improper Operation and MaintenanceST6
July 2, 2025Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
July 2, 2025Management Practice Violations - Failure to Maintain RecordsST6

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, MTX000242.

Start the watch

How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

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 MTX000242 there.

Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES MTX000242 for Lewis & Clark Caverns State Park Upper Visitor Center in Whitehall, MT, held by Montana Fish Wildlife and Parks Lewis & Clark Caverns State Park and discharging to the Lower Jefferson River. The permit is administratively continued, is a minor discharger, and is listed with 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance. The subwatershed is Jefferson River-Sappington (HUC 100200050802).