NPPD SHELDON STATION

NPDES permit NE0111490 · Major NON-POTW · effective, expires 2026-12-31 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 86 forms filed late

Last period with anything received: 2026-06-30.

Reporting

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

Limits in force (97)

OutfallParameterStatisticLimitMonths
003ConductivityMO AVG report only all year
003ConductivityDAILY MX report only all year
003pHDAILY MN >= 6.5 SU all year
003pHDAILY MX <= 9 SU all year
003Sulfate, total [as SO4]MO AVG report only all year
003Sulfate, total [as SO4]DAILY MX report only all year
003Selenium, total recoverableMO AVG report only all year
003Selenium, total recoverableDAILY MX report only all year
003Boron, total recoverableMO AVG report only all year
003Boron, total recoverableDAILY MX report only all year
003Aluminum, total recoverableMO AVG report only all year
003Aluminum, total recoverableDAILY MX report only all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
004Temperature, water deg. fahrenheitMO AVG report only all year
004Temperature, water deg. fahrenheitDAILY MX report only all year
004pHDAILY MN >= 6.5 SU all year
004pHDAILY MX <= 9 SU all year
004Oil and grease, hexane extr methodMO AVG report only all year
004Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
004Chloride [as Cl]MO AVG <= 3847 mg/L Mar, Apr, May
004Chloride [as Cl]MO AVG <= 2153 mg/L Jun, Jul, Aug, Sep, Oct
004Chloride [as Cl]MO AVG <= 3847 mg/L Jan, Feb, Nov, Dec
004Chloride [as Cl]DAILY MX <= 7720 mg/L Mar, Apr, May
004Chloride [as Cl]DAILY MX <= 3033 mg/L Jun, Jul, Aug, Sep, Oct
004Chloride [as Cl]DAILY MX <= 7720 mg/L Jan, Feb, Nov, Dec
004Cadmium, dissolved [as Cd]VALUE report only all year
004Chromium, dissolved [as Cr]VALUE report only all year
004Copper, dissolved [as Cu]VALUE report only all year
004Iron, dissolved [as Fe]VALUE report only all year
004Lead, dissolved [as Pb]VALUE report only all year
004Nickel, dissolved [as Ni]VALUE report only all year
004Zinc, dissolved [as Zn]VALUE report only all year
004Selenium, dissolved [as Se]VALUE report only all year
004AtrazineMO AVG report only all year
004AtrazineDAILY MX report only all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Chlorine, total residualMO AVG <= .07 mg/L Mar, Apr, May
004Chlorine, total residualMO AVG <= .055 mg/L Jun, Jul, Aug, Sep, Oct
004Chlorine, total residualMO AVG <= .07 mg/L Jan, Feb, Nov, Dec
004Chlorine, total residualDAILY MX <= .15 mg/L Mar, Apr, May
004Chlorine, total residualDAILY MX <= .07 mg/L Jun, Jul, Aug, Sep, Oct
004Chlorine, total residualDAILY MX <= .15 mg/L Jan, Feb, Nov, Dec
004Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 1.39 toxic all year
004Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 1.39 toxic all year
004Mercury, dissolved [as Hg]VALUE report only all year
C01pHDAILY MN >= 6 SU all year
C01pHDAILY MX <= 9 SU all year
C01Chromium, total [as Cr]MO AVG <= .2 mg/L all year
C01Chromium, total [as Cr]DAILY MX <= .2 mg/L all year
C01Zinc, total [as Zn]MO AVG <= 1 mg/L all year
C01Zinc, total [as Zn]DAILY MX <= 1 mg/L all year
C01Priority PollutantsMO AVG report only all year
C01Priority PollutantsDAILY MX report only all year
C01Flow, in conduit or thru treatment plantMO AVG report only all year
C01Flow, in conduit or thru treatment plantDAILY MX report only all year
C01Chlorine, free availableMO AVG <= .2 mg/L all year
C01Chlorine, free availableDAILY MX <= .5 mg/L all year
C02pHDAILY MN >= 6 SU all year
C02pHDAILY MX <= 9 SU all year
C02Chromium, total [as Cr]MO AVG <= .2 mg/L all year
C02Chromium, total [as Cr]DAILY MX <= .2 mg/L all year
C02Zinc, total [as Zn]MO AVG <= 1 mg/L all year
C02Zinc, total [as Zn]DAILY MX <= 1 mg/L all year
C02Priority PollutantsMO AVG report only all year
C02Priority PollutantsDAILY MX report only all year
C02Flow, in conduit or thru treatment plantMO AVG report only all year
C02Flow, in conduit or thru treatment plantDAILY MX report only all year
C02Chlorine, free availableMO AVG <= .2 mg/L all year
C02Chlorine, free availableDAILY MX <= .5 mg/L all year
CP1pHDAILY MN >= 6 SU all year
CP1pHDAILY MX <= 9 SU all year
CP1Solids, total suspendedMAXIMUM <= 50 mg/L all year
CP1Flow, in conduit or thru treatment plantVALUE report only all year
MC1pHDAILY MN >= 6 SU all year
MC1pHDAILY MX <= 9 SU all year
MC1Solids, total suspendedMO AVG <= 30 mg/L all year
MC1Solids, total suspendedMAXIMUM <= 100 mg/L all year
MC1Oil and grease, hexane extr methodMO AVG <= 15 mg/L all year
MC1Oil and grease, hexane extr methodMAXIMUM <= 20 mg/L all year
MC1Iron, total [as Fe]MO AVG <= 1 mg/L all year
MC1Iron, total [as Fe]MAXIMUM <= 1 mg/L all year
MC1Iron, total [as Fe]MAXIMUM <= 9.71 kg/yr all year
MC1Copper, total recoverableMO AVG <= 1 mg/L all year
MC1Copper, total recoverableMAXIMUM <= 1 mg/L all year
MC1Copper, total recoverableMAXIMUM <= 9.71 kg/yr all year
MC1Flow, in conduit or thru treatment plantMO AVG report only all year
MC1Flow, in conduit or thru treatment plantMAXIMUM report only all year
PP1pHDAILY MN >= 6 SU all year
PP1pHDAILY MX <= 9 SU all year
PP1Solids, total suspendedMO AVG <= 30 mg/L all year
PP1Solids, total suspendedMAXIMUM <= 100 mg/L all year
PP1Oil and grease, hexane extr methodMO AVG <= 15 mg/L all year
PP1Oil and grease, hexane extr methodMAXIMUM <= 20 mg/L all year
PP1Flow, in conduit or thru treatment plantMO AVG report only all year
PP1Flow, in conduit or thru treatment plantMAXIMUM 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