GenOn - Mid-Atlantic, LLC (MORGANTOWN STATION)

NPDES permit MD0002674 · Major NON-POTW · effective, expires 2030-10-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 88 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among MD permits in EPA's filings — check your permit).

Limits in force (91)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMX MO AV <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 50 mg/L all year
001Oil & GreaseMX MO AV <= 15 mg/L all year
001Oil & GreaseDAILY MX <= 20 mg/L all year
001Arsenic, total [as As]MO AVG report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]DAILY MX report only all year
108BOD, 5-day, 20 deg. CMX MO AV <= 30 mg/L Mar, Jun, Sep, Dec
108BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Mar, Jun, Sep, Dec
108Solids, total suspendedMX MO AV <= 30 mg/L all year
108Solids, total suspendedDAILY MX <= 45 mg/L all year
108Nitrogen, total [as N]MO AVG report only all year
108Nitrogen, total [as N]DAILY MX report only all year
108Nitrogen, total [as N]MY report only all year
108Nitrogen, organic total [as N]MO AVG report only all year
108Nitrogen, organic total [as N]DAILY MX report only all year
108Nitrogen, ammonia total [as N]MO AVG report only all year
108Nitrogen, ammonia total [as N]DAILY MX report only all year
108Nitrite + Nitrate total [as N]MO AVG report only all year
108Nitrite + Nitrate total [as N]DAILY MX report only all year
108Phosphorus, total [as P]MO AVG report only all year
108Phosphorus, total [as P]DAILY MX report only all year
108Phosphorus, total [as P]MY report only all year
108Flow, in conduit or thru treatment plantMO AVG report only all year
108Flow, in conduit or thru treatment plantDAILY MX report only all year
108Coliform, fecal generalGX <= 14 MPN/100mL all year
109Copper, total [as Cu]DAILY MX <= 1 mg/L all year
109Iron, total [as Fe]DAILY MX <= 1 mg/L all year
109Flow, in conduit or thru treatment plantMO AVG report only all year
109Flow, in conduit or thru treatment plantDAILY MX report only all year
110pHMINIMUM >= 6.5 SU all year
110pHMAXIMUM <= 8.5 SU all year
110Solids, total suspendedMX MO AV <= 30 mg/L all year
110Solids, total suspendedDAILY MX <= 50 mg/L all year
110Oil & GreaseMX MO AV <= 15 mg/L Mar, Jun, Sep, Dec
110Oil & GreaseDAILY MX <= 20 mg/L Mar, Jun, Sep, Dec
110Arsenic, total [as As]MO AVG report only all year
110Arsenic, total [as As]DAILY MX report only all year
110Flow, in conduit or thru treatment plantMO AVG report only all year
110Flow, in conduit or thru treatment plantDAILY MX report only all year
110Mercury, total [as Hg]MO AVG report only all year
110Mercury, total [as Hg]DAILY MX report only all year
111Flow, in conduit or thru treatment plantMO AVG report only all year
111Flow, in conduit or thru treatment plantDAILY MX report only all year
112Nitrogen, total [as N]MO AVG report only all year
112Nitrogen, total [as N]DAILY MX report only all year
112Nitrogen, total [as N]MY report only all year
112Nitrogen, organic total [as N]MO AVG report only all year
112Nitrogen, organic total [as N]DAILY MX report only all year
112Nitrogen, ammonia total [as N]MO AVG report only all year
112Nitrogen, ammonia total [as N]DAILY MX report only all year
112Nitrite + Nitrate total [as N]MO AVG report only all year
112Nitrite + Nitrate total [as N]DAILY MX report only all year
112Phosphorus, total [as P]MO AVG report only all year
112Phosphorus, total [as P]DAILY MX report only all year
112Phosphorus, total [as P]MY report only all year
112Flow, in conduit or thru treatment plantMO AVG report only all year
112Flow, in conduit or thru treatment plantDAILY MX report only all year
801pHMINIMUM >= 6 SU all year
801pHDAILY MX <= 9 SU all year
801Solids, total suspendedMX MO AV <= 30 mg/L all year
801Solids, total suspendedDAILY MX <= 100 mg/L all year
801Oil & GreaseMX MO AV <= 15 mg/L Mar, Jun, Sep, Dec
801Oil & GreaseDAILY MX <= 20 mg/L Mar, Jun, Sep, Dec
801Nitrogen, total [as N]MO AVG report only all year
801Nitrogen, total [as N]DAILY MX report only all year
801Nitrogen, total [as N]ANNL MAX <= 394 lb/yr all year
801Nitrogen, total [as N]MY report only all year
801Nitrogen, total [as N]MO AVG report only all year
801Nitrogen, organic total [as N]MO AVG report only all year
801Nitrogen, organic total [as N]DAILY MX report only all year
801Nitrogen, ammonia total [as N]MO AVG report only all year
801Nitrogen, ammonia total [as N]DAILY MX report only all year
801Nitrite + Nitrate total [as N]MO AVG report only all year
801Nitrite + Nitrate total [as N]DAILY MX report only all year
801Phosphorus, total [as P]MO AVG report only all year
801Phosphorus, total [as P]DAILY MX report only all year
801Phosphorus, total [as P]MY report only all year
801Phosphorus, total [as P]ANNL MAX <= 118.7 lb/yr all year
801Phosphorus, total [as P]MO AVG report only all year
801ArsenicMO AVG report only all year
801ArsenicDAILY MX report only all year
801Flow, in conduit or thru treatment plantMO AVG report only all year
801Flow, in conduit or thru treatment plantDAILY MX report only all year
801Mercury, total [as Hg]MO AVG report only all year
801Mercury, total [as Hg]DAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states