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Clean Water Act discharge permit · NPDES MI0001902

MICH SEAMLESS TUBE LLC, South Lyon, MI: NPDES MI0001902 discharge permit, effluent exceedances, inspections, penalties

MICH SEAMLESS TUBE LLC, held by Michigan Seamless Tube, LLC, holds NPDES permit MI0001902, which discharges to Yerkes Drain. EPA’s file records it issued March 1, 2016 and expiring October 1, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedMICH SEAMLESS TUBE LLC
Permittee as filedMichigan Seamless Tube, LLC
NPDES IDMI0001902
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
IssuedMarch 1, 2016
Expiration dateOctober 1, 2021
Issuing agencyState
AddressSouth Lyon, MI 48178
Receiving waterYerkes Drain
Receiving water impaired303(D) Listed
SubwatershedInchwagh Lake (HUC 040900050109)
NAICS331110 – Iron and Steel Mills and Ferroalloy Manufacturing
SIC3317 – Steel Pipe And Tubes
Other EPA IDs (FRS)RCRA handler MID082767591; ICIS-AIR source MI00000000000A4741

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

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
Zinc, total [as Zn]43711October 31, 2022488% over the limit
Solids, total suspended4415October 31, 2023110% over the limit
Oil & Grease4235April 30, 2023150% over the limit
pH2235June 30, 2025
Chlorine, total residual143January 31, 2022321% over the limit
Toxicity [acute], Ceriodaphnia dubia1102March 31, 201140% over the limit
Naphthalene422January 31, 2022400% over the limit
Phosphorus, total [as P]5221December 31, 201428% over the limit
Toxicity, choice of species161December 31, 201483% over the limit
Toxicity [chronic], Ceriodaphnia dubia011March 31, 200584% over the limit
Copper, total [as Cu]4430
Lead, total [as Pb]4280
Boron, total [as B]0230
Flow, in conduit or thru treatment plant2180
Molybdenum, total [as Mo]0130
Temperature, water deg. fahrenheit2100
Outfall observation,visual, y/n response1100
Cyanide [A]420
Arsenic, total [as As]400
Cadmium, total [as Cd]400
Silver, total [as Ag]400
Tetrachloroethylene400
Mercury, total [as Hg]400
Thermal Discharge100
TU Static 24 Hr Acute Pimephales promelas100
Static 48 Hr Chronic Pimphales Promelas100

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
June 17, 2026Reporting Violations - Failure to NotifyST6
June 17, 2026Permit Violations - Discharge Without a Valid PermitST6
May 2, 2022Management Practice Violations - Best Management Practice DeficienciesST6
May 2, 2022Permit Violations - Discharge Without a Valid PermitST6
May 2, 2022Monitoring Violations - Invalid/Unrepresentative SampleST6
May 2, 2022Management Practice Violations - Improper Chemical HandlingST6
March 21, 2022Reporting Violations - Late Submittal of DMRsST6
February 24, 2022Effluent Violations - Narrative Effluent ViolationST6
February 21, 2022Reporting Violations - Late Submittal of DMRsST6
January 6, 2020Management Practice Violations - Best Management Practice DeficienciesST6

Inspections

DateWhat EPA recordedAgency
June 17, 2026EvaluationS

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
July 30, 2026Notice of ViolationState

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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How we handle your data → Privacy

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 MI0001902 there.

Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES MI0001902, held by MICH SEAMLESS TUBE LLC in South Lyon, MI, which discharges to Yerkes Drain within the Inchwagh Lake watershed (HUC 040900050109). The permit is listed as administratively continued with a Major Discharger class, and the page records 10 pollutants under a numeric limit and 23 pollutants with an effluent exceedance.