Clean Water Act discharge permit · NPDES MD0072117

CASSELMAN MINE NORTH EXPANSION, Grantsville, MD: NPDES MD0072117 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
40Pollutants under a numeric limit
0Pollutants with an effluent exceedance

CASSELMAN MINE NORTH EXPANSION, held by Rosebud Mining Company, holds NPDES permit MD0072117. EPA’s file records it issued August 5, 2021 and expiring August 31, 2026. 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	CASSELMAN MINE NORTH EXPANSION
Permittee as filed	Rosebud Mining Company
NPDES ID	MD0072117
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	August 5, 2021
Expiration date	August 31, 2026
Issuing agency	Maryland Department Environment
Address	Grantsville, MD 21536
Receiving water impaired	303(D) Listed
Subwatershed	Headwaters Casselman River (HUC 050200060401)

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

Effluent limits and exceedances

40Pollutants on file
40Under a numeric limit
40With 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
pH	6	96
Manganese, total [as Mn]	6	96
Suspended Solids, Total	6	96
Iron, total [as Fe]	6	96
Flow	6	96
Solids, settleable	2	32
Specific Conductance	2	32
Selenium, dissolved [as Se]	1	16
Selenium, total [as Se]	1	16
Temp. difference, winter [deg. F]	1	16
Mercury, dissolved [as Hg]	1	16
Mercury, total [as Hg]	1	16
Temp. difference, summer [deg. F]	2	12
Calcium, total [as Ca]	2	6
Magnesium, total [as Mg]	2	6
Sulfates, total [as SO4]	2	6
Arsenic, dissolved [as As]	2	2
Arsenic, total [as As]	2	2
Beryllium, dissolved [as Be]	2	2
Beryllium, total [as Be]	2	2
Cadmium, dissolved [as Cd]	2	2
Cadmium, total [as Cd]	2	2
Chromium, dissolved [as Cr]	2	2
Chromium, total [as Cr]	2	2
Copper, dissolved [as Cu]	2	2
Copper, total [as Cu]	2	2
Lead, dissolved [as Pb]	2	2
Lead, total [as Pb]	2	2
Thallium, dissolved [as Tl]	2	2
Thallium, total [as Tl]	2	2
Nickel, dissolved [as Ni]	2	2
Nickel, total [as Ni]	2	2
Silver, dissolved [as Ag]	2	2
Silver, total [as Ag]	2	2
Zinc, dissolved [as Zn]	2	2
Zinc, total [as Zn]	2	2
Antimony, dissolved [as Sb]	2	2
Antimony, total [as Sb]	2	2
Aluminum, total [as Al]	2	2
Aluminum, dissolved [as Al]	2	2

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MD0072117.

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 MD0072117.

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 MD0072117 there.

Nearby on the register

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

This public-records page covers the Clean Water Act discharge permit NPDES MD0072117 for the Casselman Mine North Expansion in Grantsville, MD, held by Rosebud Mining Company and listed as administratively continued. The page lists 40 pollutants on file, with 40 under a numeric limit and 0 showing an effluent exceedance.