Clean Water Act discharge permit · NPDES KYR004609

ADAIR CO STATE MAINTENANCE GARAGE, Columbia, KY: NPDES KYR004609 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
7Pollutants under a numeric limit
2Pollutants with an effluent exceedance
1Inspections on file
0Formal enforcement actions

ADAIR CO STATE MAINTENANCE GARAGE, held by Adair Co State Maintenance Garage, holds NPDES permit KYR004609. EPA’s file records it issued March 22, 2024 and expiring July 31, 2028.

ADAIR CO STATE MAINTENANCE GARAGE, Columbia, Kentucky: Coverage under a general permit KYR004609, held by Adair Co State Maintenance Garage; Effective; issued March 22, 2024, term to July 31, 2028, by KY DEP.

Chloride [as Cl]: 2 limits, 4 violations of any kind, 4 effluent exceedances, latest June 30, 2026, largest 263% over the limit.
pH: 4 limits, 1 violation of any kind, 1 effluent exceedance, latest June 30, 2026.
Solids, total suspended: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Oil & Grease: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Surfactants [MBAS]: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Chemical Oxygen Demand [COD]: 4 limits, 0 violations of any kind, 0 effluent exceedances.

October 7, 2026: Notice of Violation (State).
March 5, 2026: Failure to comply with monitoring requirements related to industrial stormwater [40 CFR 122.41(j)] (ST6).
March 5, 2026: Evaluation (S).

ADAIR CO STATE MAINTENANCE GARAGE among its neighbors

EPA’s permit file holds 3 discharge permits in the Butler Branch-Russell Creek subwatershed (HUC 051100010407), KYR004609 among them. Its county holds 9, 1 of them major permits; KYR004609 is a minor permit.

Other permits in the Butler Branch-Russell Creek subwatershed (HUC 051100010407)

ADAIR COUNTY HIGH SCHOOL ADDITION, Columbia: KYR10U804, minor permit, discharging to Pond, permit term to December 31, 2029
COLUMBIA/ADAIR COUNTY STP, Columbia: KY0024317, major permit, discharging to RUSSELL CRK, permit term to January 31, 2026

Identity

Facility as filed	ADAIR CO STATE MAINTENANCE GARAGE
Permittee as filed	Adair Co State Maintenance Garage
NPDES ID	KYR004609
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	March 22, 2024
Expiration date	July 31, 2028
Issuing agency	KY DEP
Address	Columbia, KY 42728
Receiving water impaired	303(D) Listed
Subwatershed	Butler Branch-Russell Creek (HUC 051100010407)

Effluent limits and exceedances

7Pollutants on file
7Under a numeric limit
2With a violation of any kind
2With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Chloride [as Cl]	2	4	4	June 30, 2026	263% over the limit
pH	4	1	1	June 30, 2026
Solids, total suspended	4	0	0
Oil & Grease	4	0	0
Surfactants [MBAS]	4	0	0
Flow, in conduit or thru treatment plant	4	0	0
Chemical Oxygen Demand [COD]	4	0	0

Inspections, violations and enforcement

1Single-event violations

Date	What EPA recorded	Agency
March 5, 2026	Failure to comply with monitoring requirements related to industrial stormwater [40 CFR 122.41(j)]	ST6

Inspections

Date	What EPA recorded	Agency
March 5, 2026	Evaluation	S

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

Date	What EPA recorded	Agency
October 7, 2026	Notice of Violation	State

Watch this permit

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Nearby on the register

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

This public-records page covers NPDES permit KYR004609 for ADAIR CO STATE MAINTENANCE GARAGE in Columbia, KY, a minor discharger whose permit is listed as effective and was issued March 22, 2024 with an expiration date of July 31, 2028. The page reports 7 pollutants on file, 2 of them under a numeric limit, and 2 with an effluent exceedance. Subwatershed Butler Branch-Russell Creek (HUC 051100010407) is listed as a receiving water on the 303(D) impaired list.