Clean Water Act discharge permit · NPDES MDG521009
PATUXENT RIVER OYSTER COMPANY, Mechanicsville, MD: NPDES MDG521009 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
PATUXENT RIVER OYSTER COMPANY holds NPDES permit MDG521009. EPA’s file records it issued December 4, 2000 and expiring August 27, 2005. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | PATUXENT RIVER OYSTER COMPANY |
|---|---|
| Permittee as filed | PATUXENT RIVER OYSTER COMPANY |
| NPDES ID | MDG521009 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 4, 2000 |
| Expiration date | August 27, 2005 |
| Address | Mechanicsville, MD 20659 |
| Subwatershed | Indian Creek-Patuxent River (HUC 020600060601) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 6Pollutants on file
- 0Under 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 |
|---|---|---|---|---|---|
| pH | 0 | 120 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 120 | 0 | ||
| Solids, total suspended | 0 | 96 | 0 | ||
| Oil & Grease | 0 | 96 | 0 | ||
| Chlorine, total residual | 0 | 60 | 0 | ||
| Coliform, fecal general | 0 | 60 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MDG521009.
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 MDG521009.
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.
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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 MDG521009 there.
Nearby on the register
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- Every permit record in Maryland, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.