USARMY LETTERKENNY ARMY DEPOT

NPDES permit PA0010502 · Minor FEDERAL · effective, expires 2027-05-31 · EPA's file as of 2026-09-19

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.

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

1values over a limit
0required values missing, on 0 form(s)
0of 18 forms filed late

Last period with anything received: 2026-06-30. Most often over: Solids, total suspended (1).

Reporting

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

Limits in force (117)

OutfallParameterStatisticLimitMonths
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 10 mg/L all year
001Solids, total suspendedDAILY MX <= 20 mg/L all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Oil & GreaseMO AVG <= 15 mg/L all year
001Oil & GreaseDAILY MX <= 30 mg/L all year
001Oil & GreaseMO AVG report only all year
001Oil & GreaseDAILY MX report only all year
001Phosphorus, total [as P]MO AVG <= 2 mg/L all year
001Phosphorus, total [as P]DAILY MX <= 4 mg/L all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Cyanide, total [as CN]MO AVG <= .65 mg/L all year
001Cyanide, total [as CN]DAILY MX <= 1.2 mg/L all year
001Cyanide, total [as CN]MO AVG report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Chloride [as Cl]MO AVG report only all year
001Chloride [as Cl]DAILY MX report only all year
001Chloride [as Cl]MO AVG report only all year
001Chloride [as Cl]DAILY MX report only all year
001Sulfate, total [as SO4]MO AVG report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Sulfate, total [as SO4]MO AVG report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Cadmium, total [as Cd]MO AVG <= .0015 mg/L all year
001Cadmium, total [as Cd]DAILY MX <= .0023 mg/L all year
001Cadmium, total [as Cd]MO AVG <= .004 lb/d all year
001Cadmium, total [as Cd]DAILY MX <= .005 lb/d all year
001Chromium, total [as Cr]MO AVG <= 1.71 mg/L all year
001Chromium, total [as Cr]DAILY MX <= 2.77 mg/L all year
001Chromium, total [as Cr]MO AVG report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Copper, total [as Cu]MO AVG <= .054 mg/L all year
001Copper, total [as Cu]DAILY MX <= .084 mg/L all year
001Copper, total [as Cu]MO AVG <= .13 lb/d all year
001Copper, total [as Cu]DAILY MX <= .2 lb/d all year
001Lead, total [as Pb]MO AVG <= .024 mg/L all year
001Lead, total [as Pb]DAILY MX <= .038 mg/L all year
001Lead, total [as Pb]MO AVG <= .059 lb/d all year
001Lead, total [as Pb]DAILY MX <= .092 lb/d all year
001Nickel, total [as Ni]MO AVG <= .3 mg/L all year
001Nickel, total [as Ni]DAILY MX <= .469 mg/L all year
001Nickel, total [as Ni]MO AVG <= .73 lb/d all year
001Nickel, total [as Ni]DAILY MX <= 1.13 lb/d all year
001Silver, total [as Ag]MO AVG <= .025 mg/L all year
001Silver, total [as Ag]DAILY MX <= .039 mg/L all year
001Silver, total [as Ag]MO AVG <= .061 lb/d all year
001Silver, total [as Ag]DAILY MX <= .094 lb/d all year
001Zinc, total [as Zn]MO AVG <= .443 mg/L all year
001Zinc, total [as Zn]DAILY MX <= .692 mg/L all year
001Zinc, total [as Zn]MO AVG <= 1.07 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 1.67 lb/d all year
001Antimony, total [as Sb]MO AVG report only all year
001Antimony, total [as Sb]DAILY MX report only all year
001Antimony, total [as Sb]MO AVG report only all year
001Antimony, total [as Sb]DAILY MX report only all year
001Aluminum, total [as Al]MO AVG <= 1.57 mg/L all year
001Aluminum, total [as Al]DAILY MX <= 2.45 mg/L all year
001Aluminum, total [as Al]MO AVG <= 3.8 lb/d all year
001Aluminum, total [as Al]DAILY MX <= 5.92 lb/d 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
001Phosphorus, TotalANNL TOT <= 1765 lb all year
001Solids, total dissolvedMO AVG report only all year
001Solids, total dissolvedDAILY MX report only all year
001Solids, total dissolvedMO AVG report only all year
001Solids, total dissolvedDAILY MX report only all year
001Bromide [as Br]MO AVG report only all year
001Bromide [as Br]DAILY MX report only all year
001Bromide [as Br]MO AVG report only all year
001Bromide [as Br]DAILY MX report only all year
001Mercury, total [as Hg]MO AVG <= .0002 mg/L all year
001Mercury, total [as Hg]DAILY MX <= .0003 mg/L all year
001Mercury, total [as Hg]MO AVG <= .0004 lb/d all year
001Mercury, total [as Hg]DAILY MX <= .0006 lb/d all year
001Organics, total toxic [TTO]DAILY MX <= 2.13 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 20 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 48 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 97 lb/d all year
002Oxygen demand, chem. [high level] [COD]SEMI AVG report only all year
002pHSEMI AVG report only all year
002Solids, total suspendedSEMI AVG report only all year
002Nitrogen, Kjeldahl, total [as N]SEMI AVG report only all year
002Nitrite + Nitrate total [as N]SEMI AVG report only all year
002Phosphorus, total [as P]SEMI AVG report only all year
002Iron, total [as Fe]SEMI AVG report only all year
002Zinc, total [as Zn]SEMI AVG report only all year
002Aluminum, total [as Al]SEMI AVG report only all year
002BOD, carbonaceous [5 day, 20 C]SEMI AVG report only all year
004Oxygen demand, chem. [high level] [COD]SEMI AVG report only all year
004pHSEMI AVG report only all year
004Solids, total suspendedSEMI AVG report only all year
004Nitrogen, Kjeldahl, total [as N]SEMI AVG report only all year
004Nitrite + Nitrate total [as N]SEMI AVG report only all year
004Phosphorus, total [as P]SEMI AVG report only all year
004Cyanide, total [as CN]ANNL AVG report only all year
004Cadmium, total [as Cd]ANNL AVG report only all year
004Chromium, total [as Cr]ANNL AVG report only all year
004Copper, total [as Cu]ANNL AVG report only all year
004Iron, total [as Fe]SEMI AVG report only all year
004Lead, total [as Pb]ANNL AVG report only all year
004Zinc, total [as Zn]ANNL AVG report only all year
004Aluminum, total [as Al]SEMI AVG report only all year
004BOD, carbonaceous [5 day, 20 C]SEMI AVG report only all year
005Oxygen demand, chem. [high level] [COD]SEMI AVG report only all year
005pHSEMI AVG report only all year
005Solids, total suspendedSEMI AVG report only all year
005Nitrogen, Kjeldahl, total [as N]SEMI AVG report only all year
005Nitrite + Nitrate total [as N]SEMI AVG report only all year
005Phosphorus, total [as P]SEMI AVG report only all year
005Iron, total [as Fe]SEMI AVG report only all year
005Zinc, total [as Zn]SEMI AVG report only all year
005Aluminum, total [as Al]SEMI AVG report only all year
005BOD, carbonaceous [5 day, 20 C]SEMI AVG 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