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Clean Water Act discharge permit · NPDES MTR000728

ES STONE: SITE #6 (COONEY/MOORE), Harlowton, MT: NPDES MTR000728 discharge permit, effluent exceedances, inspections, penalties

ES STONE: SITE #6 (COONEY/MOORE), held by ES Stone and Structure, holds NPDES permit MTR000728, which discharges to Unnamed Tributary To Musselshell River. EPA’s file records it issued September 22, 2021 and expiring January 31, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for ES STONE: SITE #6 (COONEY/MOORE): its NPDES ID, its permit type and status, its dates, its address in Harlowton, Montana, its receiving water, and 1 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR000728.

Identity

Facility as filedES STONE: SITE #6 (COONEY/MOORE)
Permittee as filedES Stone and Structure
NPDES IDMTR000728
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramIndustrial stormwater
IssuedSeptember 22, 2021
Expiration dateJanuary 31, 2023
AddressHarlowton, MT 59036
Receiving waterUnnamed tributary to Musselshell River
SubwatershedMusselshell River-Harlowton (HUC 100402011003)
SIC1411 – Dimension Stone

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same 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
Solids, total suspended200

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTR000728.

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 MTR000728.

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.

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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 MTR000728 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers the Clean Water Act discharge permit NPDES MTR000728 for ES STONE: SITE #6 (COONEY/MOORE) in Harlowton, Montana, held by ES Stone and Structure and discharging to Unnamed Tributary To Musselshell River, with its permit status listed as administratively continued. The register lists 1 pollutant under a numeric limit and 0 pollutants with an effluent exceedance, and records the permit as issued September 22, 2021 and expiring January 31, 2023.