ALLEGHENY ENERGY SUPPLY COMPANY, LLC

NPDES permit WV0079171 · Minor NON-POTW · expired 2025-06-21 · EPA's file as of 2026-09-26

Keep this permit as a site — opens New site at EPA's facility point (39.37, -81.2942); you set the radius.

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

These are the last limits EPA's file holds for this permit, from an earlier version of it (version 0 in EPA's file): its current version carries none yet. Read your permit: a renewal can change them.

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

0values over a limit
0required values missing, on 0 form(s)
0of 4 forms filed late

Last period with anything received: 2025-11-30.

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

How strict are these limits?

Each concentration limit against the same limit in comparable permits. Where it appears more than once, its strictest value.

1 other limit: fewer than 20 comparable permits.

Limits in force (64)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitmonthly average report only all year
001Temperature, water deg. fahrenheitdaily maximum report only all year
001pHinstantaneous minimum >= 6 SU all year
001pHinstantaneous maximum <= 9 SU all year
001Solids, total suspendedmonthly average <= 35 mg/L all year
001Solids, total suspendeddaily maximum <= 70 mg/L all year
001Nitrogen, ammonia total [as N]monthly average report only all year
001Nitrogen, ammonia total [as N]daily maximum report only all year
001Nitrite + Nitrate total [as N]monthly average report only all year
001Nitrite + Nitrate total [as N]daily maximum report only all year
001Magnesium, total [as Mg]monthly average report only all year
001Magnesium, total [as Mg]daily maximum report only all year
001Chloride [as Cl]monthly average report only all year
001Chloride [as Cl]daily maximum report only all year
001Fluoride, total [as F]monthly average <= 50 mg/L all year
001Fluoride, total [as F]daily maximum <= 101 mg/L all year
001Arsenic, total recoverablemonthly average report only all year
001Arsenic, total recoverabledaily maximum report only all year
001Cobalt, total recoverablemonthly average report only all year
001Cobalt, total recoverabledaily maximum report only all year
001Iron, total recoverablemonthly average report only all year
001Iron, total recoverabledaily maximum report only all year
001Selenium, total recoverablemonthly average report only all year
001Selenium, total recoverabledaily maximum report only all year
001Titanium, total recoverablemonthly average report only all year
001Titanium, total recoverabledaily maximum report only all year
001Beryllium, total recoverable [as Be]monthly average report only all year
001Beryllium, total recoverable [as Be]daily maximum report only all year
001Boron, total [as B]monthly average report only all year
001Boron, total [as B]daily maximum report only all year
001Chromium, hexavalent [as Cr]monthly average report only all year
001Chromium, hexavalent [as Cr]daily maximum report only all year
001Thallium, total [as Tl]monthly average report only all year
001Thallium, total [as Tl]daily maximum report only all year
001Nickel, total recoverablemonthly average report only all year
001Nickel, total recoverabledaily maximum report only all year
001Silver total recoverablemonthly average report only all year
001Silver total recoverabledaily maximum report only all year
001Vanadium, total [as V]monthly average report only all year
001Vanadium, total [as V]daily maximum report only all year
001Antimony, total [as Sb]monthly average report only all year
001Antimony, total [as Sb]daily maximum report only all year
001Aluminum, total recoverablemonthly average report only all year
001Aluminum, total recoverabledaily maximum report only all year
001Cadmium, total recoverablemonthly average report only all year
001Cadmium, total recoverabledaily maximum report only all year
001Lead, total recoverablemonthly average report only all year
001Lead, total recoverabledaily maximum report only all year
001Molybdenum, total recoverablemonthly average report only all year
001Molybdenum, total recoverabledaily maximum report only all year
001Manganese, total recoverablemonthly average report only all year
001Manganese, total recoverabledaily maximum report only all year
001Flow, in conduit or thru treatment plantmonthly average report only all year
001Flow, in conduit or thru treatment plantdaily maximum report only all year
001Toxicity [acute], Ceriodaphnia dubiamonthly average <= 3.5 tox acute all year
001Toxicity [acute], Ceriodaphnia dubiadaily maximum <= 7 tox acute all year
001Toxicity [acute], Pimephales promelas [Fathead Minnow]monthly average report only all year
001Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum report only all year
001Solids, total dissolvedmonthly average report only all year
001Solids, total dissolveddaily maximum report only all year
001Mercury, total [as Hg]monthly average report only all year
001Mercury, total [as Hg]daily maximum report only all year
001Sulfatemonthly average report only all year
001Sulfatedaily maximum 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