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NPDES MTR000090 · Clean Water Act

GRAYMONT WESTERN US INC, Townsend, MT: NPDES MTR000090 discharge permit, effluent exceedances, inspections, penalties

GRAYMONT WESTERN US INC, Townsend, Montana: General permit coverage MTR000090; Industrial stormwater; Administratively continued; issued July 1, 2018, term to January 31, 2023; discharges to CANYON FERRY LAKE.

2 of the 10 pollutants listed for NPDES MTR000090 have no violation or effluent exceedance.

  • Solids, total suspended: 4 limits, 6 violations of any kind.
  • Iron, total [as Fe]: 4 limits, 4 violations of any kind.
  • Flow rate: 0 limits, 2 violations of any kind.
  • Oxygen demand, chem. [low level] [COD]: 0 limits, 2 violations of any kind.
  • pH: 0 limits, 2 violations of any kind.
  • Nitrite + Nitrate total [as N]: 0 limits, 2 violations of any kind.
  • Oil and grease visual: 0 limits, 2 violations of any kind.
  • Report due [yrmoda]: 0 limits, 1 violation of any kind.
  • Copper, total [as Cu]: 4 limits.
  • Zinc, total [as Zn]: 4 limits.
  • August 3, 2023: WW Storm Water Non-Construction - Failure to Maintain Records (ST6).
  • August 3, 2023: WW Storm Water Non-Construction - Failure to properly operate and maintain BMPs (ST6).
  • August 3, 2023: WW Storm Water Non-Construction - Failure to Conduct Inspections (ST6).
  • August 3, 2023: WW Storm Water Non-Construction - Failure to properly install/implement BMPs (ST6).

Montana holds 465 Industrial stormwater coverages of this permit type in EPA’s file; 212 were issued before MTR000090.

Coverages issued nearest MTR000090

GRAYMONT WESTERN US INC among its neighbors

3 discharge permits are in the Missouri River-Lower Crow Creek subwatershed (HUC 100301010707); MTR000090 is one. Its county: 33, 0 major; MTR000090 is minor permit.

Other permits in the Missouri River-Lower Crow Creek subwatershed (HUC 100301010707)

Identity

FacilityGRAYMONT WESTERN US INC
PermitteeGRAYMONT WESTERN US INC
NPDES IDMTR000090
StatusAdministratively continued
TypeGeneral permit coverage
ClassMinor
Facility typeNon-POTW
ProgramIndustrial stormwater
IssuedJuly 1, 2018
ExpiresJanuary 31, 2023
AddressTownsend, MT 59644
Receiving waterCANYON FERRY LAKE
Receiving water impaired303(D) Listed
SubwatershedMissouri River-Lower Crow Creek (HUC 100301010707)
SIC3274 – Lime
Other EPA IDs (FRS)RCRA handler MTR000007963; ICIS-AIR source MT0000003000700002

NPDES MTR000090: effluent limits and exceedances

GRAYMONT WESTERN US INC (NPDES MTR000090): 10 pollutants on file, 4 limited; 8 with a violation of any kind, 0 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
Solids, total suspended460
Iron, total [as Fe]440
Flow rate020
Oxygen demand, chem. [low level] [COD]020
pH020
Nitrite + Nitrate total [as N]020
Oil and grease visual020
Report due [yrmoda]010
Copper, total [as Cu]400
Zinc, total [as Zn]400

NPDES MTR000090: inspections, violations and enforcement

NPDES MTR000090: 4 single-event violations

DateWhat EPA recordedAgency
August 3, 2023WW Storm Water Non-Construction - Failure to Maintain RecordsST6
August 3, 2023WW Storm Water Non-Construction - Failure to properly operate and maintain BMPsST6
August 3, 2023WW Storm Water Non-Construction - Failure to Conduct InspectionsST6
August 3, 2023WW Storm Water Non-Construction - Failure to properly install/implement BMPsST6

NPDES MTR000090 (GRAYMONT WESTERN US INC): no inspection, formal enforcement action and informal enforcement action on file.

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Permits near NPDES MTR000090

NPDES MTR000090: 10 pollutant rows, 4 dated events; ICIS-NPDES download, loaded October 14, 2026.