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Clean Water Act discharge permit · NPDES WA0031283

CHEMTRADE SULEX INC., Mount Vernon, WA: NPDES WA0031283 discharge permit, effluent exceedances, inspections, penalties

CHEMTRADE SULEX INC., held by Chemtrade Sulex Inc, holds NPDES permit WA0031283. EPA’s file records it issued June 29, 2012 and expiring June 29, 2017.

CHEMTRADE SULEX INC., Mount Vernon, Washington: Individual permit WA0031283, held by Chemtrade Sulex Inc; Administratively continued (past its expiration date and still in force until reissued); issued June 29, 2012, term to June 29, 2017, by State.

  • Solids, total suspended: 3 limits, 82 violations of any kind, 5 effluent exceedances, latest December 31, 2025, largest 207% over the limit.
  • Oxygen, dissolved [DO]: 1 limit, 25 violations of any kind, 1 effluent exceedance, latest August 31, 2025, largest 14% over the limit.
  • Flow: 4 limits, 106 violations of any kind, 0 effluent exceedances.
  • pH: 3 limits, 83 violations of any kind, 0 effluent exceedances.
  • Temperature, water deg. centigrade: 1 limit, 25 violations of any kind, 0 effluent exceedances.
  • Oxygen, dissolved percent saturation: 1 limit, 24 violations of any kind, 0 effluent exceedances.
  • Sulfide, total [as S]: 1 limit, 24 violations of any kind, 0 effluent exceedances.
  • Sulfate, total [as SO4]: 1 limit, 24 violations of any kind, 0 effluent exceedances.
  • August 20, 2026: Agency Enforcement Review (State).
  • March 12, 2026: Agency Enforcement Review (State).
  • January 22, 2026: Agency Enforcement Review (State).

Other permits held by Chemtrade Sulex Inc

CHEMTRADE SULEX INC. among its neighbors

EPA’s permit file holds 52 discharge permits in the Joe Leary Slough-Frontal Padilla Bay subwatershed (HUC 171100020402), WA0031283 among them. Its county holds 212, 2 of them major permits; WA0031283 is a minor permit.

Other permits in the Joe Leary Slough-Frontal Padilla Bay subwatershed (HUC 171100020402)

Identity

Facility as filedCHEMTRADE SULEX INC.
Permittee as filedChemtrade Sulex Inc
NPDES IDWA0031283
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJune 29, 2012
Expiration dateJune 29, 2017
Issuing agencyState
AddressMount Vernon, WA 98273
Receiving water impaired303(D) Listed
SubwatershedJoe Leary Slough-Frontal Padilla Bay (HUC 171100020402)
SIC2819 – Industrial Inorganic Chemicals
Other EPA IDs (FRS)RCRA handler WAY000203455

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 suspended3825December 31, 2025207% over the limit
Oxygen, dissolved [DO]1251August 31, 202514% over the limit
Flow41060
pH3830
Temperature, water deg. centigrade1250
Oxygen, dissolved percent saturation1240
Sulfide, total [as S]1240
Sulfate, total [as SO4]1240

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES WA0031283.

Inspections

EPA’s inspection file holds no inspection for NPDES WA0031283.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

DateWhat EPA recordedAgency
August 20, 2026Agency Enforcement ReviewState
March 12, 2026Agency Enforcement ReviewState
January 22, 2026Agency Enforcement ReviewState

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Nearby on the register

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

What this page shows

This public-records page covers NPDES permit WA0031283, held by CHEMTRADE SULEX INC. in Mount Vernon, WA, with a permit status of administratively continued and a minor discharger class. The page lists 8 pollutants under a numeric limit and 2 pollutants with an effluent exceedance, with the permit issued June 29, 2012 and expiring June 29, 2017.