Clean Water Act discharge permit · NPDES KYR004583
KEYSTOPS LLC - MOUNT STERLING BULK PLANT, Mount Sterling, KY: NPDES KYR004583 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
KEYSTOPS LLC - MOUNT STERLING BULK PLANT, held by Keystops LLC - Mount Sterling Bulk Plant, holds NPDES permit KYR004583. EPA’s file records it issued October 13, 2023 and expiring July 31, 2028.
KEYSTOPS LLC - MOUNT STERLING BULK PLANT, Mount Sterling, Kentucky: Coverage under a general permit KYR004583, held by Keystops LLC - Mount Sterling Bulk Plant; Effective; issued October 13, 2023, term to July 31, 2028, by KY DEP.
- Chemical Oxygen Demand [COD]: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- pH: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Solids, total suspended: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Oil & Grease: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Surfactants [MBAS]: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 4 limits, 4 violations of any kind, 0 effluent exceedances.
- January 20, 2026: Notice of Violation (State).
- December 4, 2025: Failure to comply with monitoring requirements related to industrial stormwater [40 CFR 122.41(j)] (ST6).
- December 6, 2024: WW Storm Water Non-Construction - Failure to Monitor (ST6).
- January 18, 2024: WW Storm Water Non-Construction - Failure to Monitor (ST6).
KEYSTOPS LLC - MOUNT STERLING BULK PLANT among its neighbors
EPA’s permit file holds 10 discharge permits in the Headwaters Hinkston Creek subwatershed (HUC 051001020302), KYR004583 among them. Its county holds 23, 1 of them major permits; KYR004583 is a minor permit.
Other permits in the Headwaters Hinkston Creek subwatershed (HUC 051001020302)
- 9739 CR TETLP DANV-OWSV 483 CLASS REPLACEMENTS W/ HYDROTEST PROJECT, Mount Sterling: KYR10U048, minor permit, discharging to Somerset Creek, permit term to December 31, 2029
- COMMUNITY TRUST BANK - MT. STERLING, Mount Sterling: KYR10T484, minor permit, discharging to Hinkston Creek, permit term to December 31, 2029
- DOLLAR GENERAL, Mount Sterling: KYR10T263, minor permit, discharging to Hinkston Creek, permit term to December 31, 2029
- EXPRESS OIL CHANGE MT. STERLING, KY, Mount Sterling: KYR10T739, minor permit, discharging to Hinkston Creek, permit term to December 31, 2029
- MONTGOMERY CO STATE MAINTENANCE GARAGE, Mount Sterling: KYR004656, minor permit, permit term to July 31, 2028
- MOUNT STERLING HINKSTON CREEK STP, Mount Sterling: KY0104400, major permit, discharging to HINKSTON CRK, permit term to April 30, 2023
- NUGEN ENVIRONMENTAL, Mount Sterling: KYR004830, minor permit, permit term to July 31, 2028
- REGAL BELOIT AMERICA INC, Mount Sterling: KY0002771, minor permit, discharging to UT / HINKSTON CRK, permit term to July 31, 2013
- SHARPSBURG STP, Sharpsburg: KY0088421, minor permit, discharging to UT / HINKSTON CRK, permit term to July 31, 2021
Identity
| Facility as filed | KEYSTOPS LLC - MOUNT STERLING BULK PLANT |
|---|---|
| Permittee as filed | Keystops LLC - Mount Sterling Bulk Plant |
| NPDES ID | KYR004583 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | October 13, 2023 |
| Expiration date | July 31, 2028 |
| Issuing agency | KY DEP |
| Address | Mount Sterling, KY 40503 |
| Subwatershed | Headwaters Hinkston Creek (HUC 051001020302) |
Effluent limits and exceedances
- 6Pollutants on file
- 6Under a numeric limit
- 6With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Chemical Oxygen Demand [COD] | 4 | 8 | 0 | ||
| pH | 4 | 4 | 0 | ||
| Solids, total suspended | 4 | 4 | 0 | ||
| Oil & Grease | 4 | 4 | 0 | ||
| Surfactants [MBAS] | 4 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 4 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES KYR004583.
Inspections, violations and enforcement
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 4, 2025 | Failure to comply with monitoring requirements related to industrial stormwater [40 CFR 122.41(j)] | ST6 |
| December 6, 2024 | WW Storm Water Non-Construction - Failure to Monitor | ST6 |
| January 18, 2024 | WW Storm Water Non-Construction - Failure to Monitor | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES KYR004583.
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 |
|---|---|---|
| January 20, 2026 | Notice of Violation | State |
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, KYR004583.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
Nearby on the register
- Discharge permits in Mount Sterling
- Every permit record in Mount Sterling, A to Z
- Discharge permits in Kentucky
- Every permit record in Kentucky, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.