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Clean Water Act discharge permit · NPDES MI0029122

FLAT ROCK TERRACE MHP, Flat Rock, MI: NPDES MI0029122 discharge permit, effluent exceedances, inspections, penalties

FLAT ROCK TERRACE MHP, held by Arbor-Americana LLC, holds NPDES permit MI0029122, which discharges to Carter Drain. EPA’s file records it issued February 27, 2017 and expiring October 1, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedFLAT ROCK TERRACE MHP
Permittee as filedArbor-Americana LLC
NPDES IDMI0029122
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
IssuedFebruary 27, 2017
Expiration dateOctober 1, 2021
Issuing agencyState
AddressFlat Rock, MI 48134
Receiving waterCarter Drain
Receiving water impaired303(D) Listed
SubwatershedBancroft Noles Drain-Huron River (HUC 040900050407)
Other EPA IDs (FRS)RCRA handler MIK657629846

Cited to the EPA ICIS-NPDES permit file (ECHO 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
Nitrogen, ammonia total [as N]16421287July 31, 20264,291% over the limit
BOD, carbonaceous [5 day, 20 C]12396260July 31, 20262,744% over the limit
Coliform, fecal general2153113May 31, 202699,999% over the limit
Phosphorus, total [as P]416691September 30, 2025329% over the limit
Solids, total suspended815282September 30, 20251,753% over the limit
Oxygen, dissolved [DO]29660January 31, 202698% over the limit
pH28947August 31, 2017
Chlorine, total residual0265February 28, 2013336,742% over the limit
Flow, in conduit or thru treatment plant2440
Solids, total300
Arsenic, dry weight300
Selenium, dry weight300
Copper, dry weight300
Cadmium, dry weight300
Nitrogen, total Kjeldahl300
Molybdenum, sludge, total, dry weight [as Mo]300
Zinc, sludge, total, dry weight [as Zn]300
Lead, sludge, total, dry weight [as Pb]300
Nickel, sludge, total, dry weight [as Ni]300
Nitrogen, sludge, total, dry weight [as N]300
Mercury, sludge, total, dry weight [as Hg]300
Potassium, sludge, total, dry weight [as K]300
Phosphorus, sludge, total, dry weight [as P]300

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
October 4, 2022Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
October 4, 2022Management Practice Violations - Failure to Maintain RecordsST6
October 4, 2022Management Practice Violations - Improper Operation and MaintenanceST6
June 29, 2022Management Practice Violations - Failure to Maintain RecordsST6
June 12, 2022Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
June 5, 2022Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
May 31, 2022Management Practice Violations - Failure to Maintain RecordsST6
May 29, 2022Management Practice Violations - Failure to Maintain RecordsST6
May 26, 2022Management Practice Violations - Failure to Maintain RecordsST6
May 22, 2022Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
May 8, 2022Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
May 1, 2022Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
April 29, 2022Management Practice Violations - Failure to Maintain RecordsST6
April 24, 2022Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
April 10, 2022Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
March 31, 2022Management Practice Violations - Failure to Maintain RecordsST6
March 31, 2022Monitoring Violations - Frequency of Sampling ViolationST6
March 29, 2022Management Practice Violations - Failure to Maintain RecordsST6
March 28, 2022Management Practice Violations - Failure to Maintain RecordsST6
March 27, 2022Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
March 20, 2022Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
January 31, 2022Management Practice Violations - Failure to Maintain RecordsST6
January 31, 2022Monitoring Violations - Frequency of Sampling ViolationST6
December 31, 2021Management Practice Violations - Failure to Maintain RecordsST6
December 31, 2021Monitoring Violations - Frequency of Sampling ViolationST6
December 19, 2021Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
December 5, 2021Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
November 10, 2021Reporting Violations - Failure to NotifyST6
November 1, 2021Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6

Inspections

EPA’s inspection file holds no inspection for NPDES MI0029122.

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 29, 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 MI0029122 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES MI0029122 for FLAT ROCK TERRACE MHP in Flat Rock, MI, held by Arbor-Americana LLC and discharging to Carter Drain, with the permit listed as administratively continued. The page lists 22 pollutants under a numeric limit and 8 pollutants with an effluent exceedance, within the Bancroft Noles Drain-Huron River subwatershed (HUC 040900050407).