Clean Water Act discharge permit · NPDES MDG999319
HIDDEN HARBOUR MARINA, Deale, MD: NPDES MDG999319 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
HIDDEN HARBOUR MARINA, held by Hidden Harbour Marina, holds NPDES permit MDG999319, which discharges to West Chesapeake Bay. EPA’s file records it issued September 28, 2017 and expiring July 31, 2022. 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 filed | HIDDEN HARBOUR MARINA |
|---|---|
| Permittee as filed | Hidden Harbour Marina |
| NPDES ID | MDG999319 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 28, 2017 |
| Expiration date | July 31, 2022 |
| Issuing agency | Maryland Department of The Environment |
| Address | Deale, MD 20751 |
| Receiving water | WEST CHESAPEAKE BAY |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Tracys Creek-Herring Bay (HUC 020600040402) |
| SIC | 4493 – Marinas |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 3Pollutants on file
- 0Under a numeric limit
- 3With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 0 | 4 | 0 | ||
| Oil & Grease | 0 | 4 | 0 | ||
| Flow | 0 | 4 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MDG999319.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MDG999319.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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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 MDG999319 there.
Nearby on the register
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- Every permit record in Deale, A to Z
- Discharge permits in Maryland
- Every permit record in Maryland, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.