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Clean Water Act discharge permit · NPDES WV0004499

MOUNTAIN STATE CARBON, LLC, Follansbee, WV: NPDES WV0004499 discharge permit, effluent exceedances, inspections, penalties

MOUNTAIN STATE CARBON, LLC, held by AK STEEL CORPORATION, holds NPDES permit WV0004499, which discharges to Ohio River. EPA’s file records it issued April 24, 1995 and expiring December 13, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedMOUNTAIN STATE CARBON, LLC
Permittee as filedAK STEEL CORPORATION
NPDES IDWV0004499
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
IssuedApril 24, 1995
Expiration dateDecember 13, 2022
AddressFollansbee, WV 26037
Receiving waterOHIO RIVER
Receiving water impaired303(D) Listed
SubwatershedWills Creek-Ohio River (HUC 050301011109)

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
Selenium, total recoverable149389June 30, 2016325% over the limit
Coliform, fecal general107771January 31, 201713,900% over the limit
Phenolics, total recoverable107367February 28, 201987,043% over the limit
Cyanide, total [as CN]127064November 30, 20131,012% over the limit
Benzo[a]pyrene124135January 31, 20201,536% over the limit
Mercury, total [as Hg]142519December 31, 20226,227% over the limit
Cyanide, weak acid, dissociable82218October 31, 2014496% over the limit
Flow, in conduit or thru treatment plant62218August 31, 201716,264% over the limit
Solids, total suspended122917May 31, 2022280% over the limit
Aluminum, total recoverable121612February 28, 2013529% over the limit
Nitrogen, ammonia total [as N]162111December 31, 201153% over the limit
BOD, 5-day, 20 deg. C4139January 31, 2008300% over the limit
Benzo[a]anthracene10117January 31, 20204,803% over the limit
Benzo[b]fluoranthene10106January 31, 2020433% over the limit
Chlorine, total residual10106August 31, 2013503% over the limit
Chrysene1095January 31, 2020273% over the limit
Iron, total recoverable1084January 31, 2012174% over the limit
Indeno[1,2,3-cd]pyrene1084January 31, 202060% over the limit
Nitrogen, nitrite total [as N]893October 31, 2014625% over the limit
Benzo[k]fluoranthene1073November 30, 201987% over the limit
Naphthalene1282October 31, 201782% over the limit
Oil and grease, hexane extr method662March 31, 2011196% over the limit
Dibenz[a,h]anthracene1051January 31, 20123% over the limit
Temperature, water deg. fahrenheit12240
Nitrogen, total [as N]1660
Nitrogen, Kjeldahl, total [as N]1260
Nitrogen, nitrate total [as N]860
Chloride [as Cl]860
pH660
Phosphorus, total [as P]1640
Fluoride, total [as F]1240
Arsenic, total recoverable1240
Acenaphthylene1240
Acenaphthene1240
Anthracene1240
Fluoranthene1240
Fluorene1240
Phenanthrene1240
Pyrene1240
Sulfate1240
Zinc, total recoverable1040
Copper, total recoverable1040
Manganese, total [as Mn]820
Hardness, total [as CaCO3]420
Manganese, total recoverable420
Benzo[ghi]perylene420
Toxicity [acute], Ceriodaphnia dubia220
Toxicity [acute], Pimephales promelas [Fathead Minnow]220
Selenium, dry weight200

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
May 15, 2019Management Practice Violations - Improper Operation and MaintenanceST6

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 WV0004499 there.

Nearby on the register

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