Clean Water Act discharge permit · NPDES MD0054836
NRG MD - BRANDYWINE FLYASH MANAGEMENT SITE, Prince George'S County, MD: NPDES MD0054836 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 48Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
NRG MD - BRANDYWINE FLYASH MANAGEMENT SITE, held by GenOn Mid-Atlantic, LLC, holds NPDES permit MD0054836, which discharges to Patuxent River - Middle. EPA’s file records it issued September 29, 2016 and expiring October 31, 2021. 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 | NRG MD - BRANDYWINE FLYASH MANAGEMENT SITE |
|---|---|
| Permittee as filed | GenOn Mid-Atlantic, LLC |
| NPDES ID | MD0054836 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 29, 2016 |
| Expiration date | October 31, 2021 |
| Issuing agency | MARYLAND DEPARTMENT OF THE ENVIRONMENT |
| Address | Prince George'S County, MD 20613 |
| Receiving water | PATUXENT RIVER - MIDDLE |
| Subwatershed | Mataponi Creek-Patuxent River (HUC 020600060502) |
| SIC | 4953 – Refuse Systems |
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
- 49Pollutants on file
- 48Under a numeric limit
- 35With a violation of any kind
- 7With 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] | 30 | 38 | 37 | March 31, 2020 | 121% over the limit |
| Cadmium, total [as Cd] | 30 | 8 | 7 | May 31, 2018 | 1,900% over the limit |
| Lead, total [as Pb] | 30 | 55 | 4 | October 31, 2017 | 100% over the limit |
| Solids, total suspended | 6 | 104 | 2 | July 31, 2019 | 63% over the limit |
| Zinc, total [as Zn] | 18 | 52 | 2 | September 30, 2017 | 100% over the limit |
| Iron, total [as Fe] | 24 | 96 | 1 | May 31, 2014 | 60% over the limit |
| Toxicity, Acute | 3 | 8 | 1 | December 31, 2017 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 6 | 93 | 0 | ||
| Copper, total [as Cu] | 30 | 51 | 0 | ||
| Selenium, total [as Se] | 28 | 51 | 0 | ||
| Hardness, total [as CaCO3] | 16 | 50 | 0 | ||
| pH | 30 | 37 | 0 | ||
| Toxicity, Chronic | 3 | 7 | 0 | ||
| Oxygen, dissolved [DO] | 12 | 3 | 0 | ||
| Turbidity | 0 | 3 | 0 | ||
| Arsenic, Inorganic | 6 | 2 | 0 | ||
| Copper, dissolved [as Cu] | 6 | 2 | 0 | ||
| Nickel, total [as Ni] | 30 | 1 | 0 | ||
| Sulfate, total [as SO4] | 24 | 1 | 0 | ||
| Arsenic, total [as As] | 24 | 1 | 0 | ||
| Boron, total [as B] | 18 | 1 | 0 | ||
| Chromium, total [as Cr] | 18 | 1 | 0 | ||
| Solids, total dissolved | 18 | 1 | 0 | ||
| Mercury, total [as Hg] | 18 | 1 | 0 | ||
| Nitrite + Nitrate total [as N] | 12 | 1 | 0 | ||
| Fluoride, total [as F] | 12 | 1 | 0 | ||
| Barium, total [as Ba] | 12 | 1 | 0 | ||
| Beryllium, total [as Be] | 12 | 1 | 0 | ||
| Manganese, total [as Mn] | 12 | 1 | 0 | ||
| Thallium, total [as Tl] | 12 | 1 | 0 | ||
| Silver, total [as Ag] | 12 | 1 | 0 | ||
| Antimony, total [as Sb] | 12 | 1 | 0 | ||
| Aluminum, total [as Al] | 12 | 1 | 0 | ||
| Radium, total | 12 | 1 | 0 | ||
| Water level at sample collection time | 12 | 1 | 0 | ||
| Color [PT-CO units] | 12 | 0 | 0 | ||
| Nitrogen, total [as N] | 12 | 0 | 0 | ||
| Phosphorus, total [as P] | 12 | 0 | 0 | ||
| Conductivity | 6 | 0 | 0 | ||
| Specific conductance | 6 | 0 | 0 | ||
| Oil & Grease | 6 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 6 | 0 | 0 | ||
| Arsenic, dissolved [as As] | 6 | 0 | 0 | ||
| Cadmium, dissolved [as Cd] | 6 | 0 | 0 | ||
| Iron, dissolved [as Fe] | 6 | 0 | 0 | ||
| Lead, dissolved [as Pb] | 6 | 0 | 0 | ||
| Nickel, dissolved [as Ni] | 6 | 0 | 0 | ||
| Zinc, dissolved [as Zn] | 6 | 0 | 0 | ||
| Selenium, dissolved [as Se] | 6 | 0 | 0 |
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 MD0054836.
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 MD0054836 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.