Clean Water Act discharge permit · NPDES MTR000898

HERNESS SITE, Culbertson, MT: NPDES MTR000898 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
1Pollutants under a numeric limit
0Pollutants with an effluent exceedance

HERNESS SITE, held by DC AGGREGATE LLC, holds NPDES permit MTR000898, which discharges to Cherry Creek. EPA’s file records it issued July 29, 2025 and expiring January 31, 2028. 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 HERNESS SITE: its NPDES ID, its permit type and status, its dates, its address in Culbertson, 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 MTR000898.

Identity

Facility as filed	HERNESS SITE
Permittee as filed	DC AGGREGATE LLC
NPDES ID	MTR000898
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Industrial stormwater
Issued	July 29, 2025
Expiration date	January 31, 2028
Address	Culbertson, MT 59218
Receiving water	CHERRY CREEK
Subwatershed	Lower East Hardscrabble Creek (HUC 100600050302)
SIC	1429 – Crushed And Broken 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

1Pollutants on file
1Under a numeric limit
0With a violation of any kind
0With 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
Solids, total suspended	2	0	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTR000898.

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 MTR000898.

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, MTR000898.

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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 MTR000898 there.

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES MTR000898 for the HERNESS SITE in Culbertson, MT, held by DC AGGREGATE LLC and discharging to Cherry Creek, with the status and dates as EPA's permit file stood when the record was loaded on October 14, 2026. The register lists a permit status of Effective, a Minor discharger class, 1 pollutant under a numeric limit, and 0 pollutants with an effluent exceedance, with the permit issued July 29, 2025 and expiring January 31, 2028.