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Clean Water Act discharge permit · NPDES MI0037001

GUARDIAN IND-CARLETON PLANT, Carleton, MI: NPDES MI0037001 discharge permit, effluent exceedances, inspections, penalties

GUARDIAN IND-CARLETON PLANT, held by Guardian Industries Corporation, holds NPDES permit MI0037001, which discharges to Vandervoort Drain. EPA’s file records it issued May 29, 2018 and expiring October 1, 2022.

GUARDIAN IND-CARLETON PLANT, Carleton, Michigan: Individual permit MI0037001, held by Guardian Industries Corporation; Administratively continued (past its expiration date and still in force until reissued); issued May 29, 2018, term to October 1, 2022, by State; discharges to Vandervoort Drain; Flat Glass Manufacturing.

  • Solids, total suspended: 32 limits, 582 violations of any kind, 43 effluent exceedances, latest December 31, 2021, largest 22,359% over the limit.
  • Chlorine, total residual: 4 limits, 76 violations of any kind, 7 effluent exceedances, latest April 30, 2024, largest 10,426% over the limit.
  • Phosphorus, total [as P]: 8 limits, 135 violations of any kind, 6 effluent exceedances, latest September 30, 2025, largest 30% over the limit.
  • Solids, total dissolved: 8 limits, 216 violations of any kind, 5 effluent exceedances, latest March 31, 2022, largest 24% over the limit.
  • Mercury, total [as Hg]: 12 limits, 201 violations of any kind, 5 effluent exceedances, latest October 31, 2018, largest 88,789% over the limit.
  • Oil & Grease: 16 limits, 264 violations of any kind, 3 effluent exceedances, latest March 31, 2020, largest 230% over the limit.
  • pH: 4 limits, 110 violations of any kind, 2 effluent exceedances, latest September 30, 2015.
  • Silver, total [as Ag]: 8 limits, 205 violations of any kind, 1 effluent exceedance, latest November 30, 2014, largest 87% over the limit.
  • Temperature, water deg. fahrenheit: 4 limits, 90 violations of any kind, 1 effluent exceedance, latest January 31, 2005, largest 16% over the limit.
  • Toxicity [chronic], Ceriodaphnia dubia: 0 limits, 3 violations of any kind, 1 effluent exceedance, latest April 30, 2005, largest 250% over the limit.
  • Flow, in conduit or thru treatment plant: 16 limits, 270 violations of any kind, 0 effluent exceedances.
  • Outfall observation,visual, y/n response: 2 limits, 54 violations of any kind, 0 effluent exceedances.
  • Boron, total [as B]: 0 limits, 22 violations of any kind, 0 effluent exceedances.
  • Selenium, total [as Se]: 0 limits, 14 violations of any kind, 0 effluent exceedances.
  • Dechlorination reagent, gen: 0 limits, 9 violations of any kind, 0 effluent exceedances.
  • Oxygen, dissolved [DO]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • February 9, 2026: Notice of Violation (State).
  • August 21, 2022: Reporting Violations - Late Submittal of DMRs (ST6).
  • July 21, 2022: Reporting Violations - Late Submittal of DMRs (ST6).

GUARDIAN IND-CARLETON PLANT among its neighbors

EPA’s permit file holds 3 discharge permits in the Middle Creek-Swan Creek subwatershed (HUC 041000010103), MI0037001 among them. Its county holds 34, 4 of them major permits; MI0037001 is a minor permit.

Other permits in the Middle Creek-Swan Creek subwatershed (HUC 041000010103)

Identity

Facility as filedGUARDIAN IND-CARLETON PLANT
Permittee as filedGuardian Industries Corporation
NPDES IDMI0037001
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
IssuedMay 29, 2018
Expiration dateOctober 1, 2022
Issuing agencyState
AddressCarleton, MI 48117
Receiving waterVandervoort Drain
SubwatershedMiddle Creek-Swan Creek (HUC 041000010103)
NAICS327211 – Flat Glass Manufacturing
SIC3211 – Flat Glass
Other EPA IDs (FRS)RCRA handler MID048784896; ICIS-AIR source MI00000000000B1877

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 suspended3258243December 31, 202122,359% over the limit
Chlorine, total residual4767April 30, 202410,426% over the limit
Phosphorus, total [as P]81356September 30, 202530% over the limit
Solids, total dissolved82165March 31, 202224% over the limit
Mercury, total [as Hg]122015October 31, 201888,789% over the limit
Oil & Grease162643March 31, 2020230% over the limit
pH41102September 30, 2015
Silver, total [as Ag]82051November 30, 201487% over the limit
Temperature, water deg. fahrenheit4901January 31, 200516% over the limit
Toxicity [chronic], Ceriodaphnia dubia031April 30, 2005250% over the limit
Flow, in conduit or thru treatment plant162700
Outfall observation,visual, y/n response2540
Boron, total [as B]0220
Selenium, total [as Se]0140
Dechlorination reagent, gen090
Oxygen, dissolved [DO]200

Inspections, violations and enforcement

DateWhat EPA recordedAgency
August 21, 2022Reporting Violations - Late Submittal of DMRsST6
July 21, 2022Reporting Violations - Late Submittal of DMRsST6

Inspections

EPA’s inspection file holds no inspection for NPDES MI0037001.

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
February 9, 2026Notice of ViolationState

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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 MI0037001 for GUARDIAN IND-CARLETON PLANT in Carleton, MI, held by Guardian Industries Corporation, which discharges to Vandervoort Drain. The permit is listed as administratively continued, with 12 minor discharger class designation, 10 pollutants under a numeric limit, and 10 pollutants with an effluent exceedance.