Net-Zero Richardton, LLC

NPDES permit ND0026271 · Minor NON-POTW · effective, expires 2030-09-30 · 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
4required values missing, on 2 form(s)
3of 8 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (50)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MN report only all year
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX <= 85 deg F all year
001ConductivityDAILY MN report only all year
001ConductivityMO AVG report only all year
001ConductivityWKLY AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MN report only all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX <= 25 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY MN report only all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Oil and grease, hexane extr methodWKLY AVG report only all year
001Oil and grease, hexane extr methodMO AVG report only all year
001Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MN report only all year
001Nitrogen, ammonia total [as N]30DA AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Magnesium, total [as Mg]WKLY AVG report only all year
001Magnesium, total [as Mg]MO AVG report only all year
001Magnesium, total [as Mg]DAILY MX report only all year
001Sodium, total [as Na]WKLY AVG report only all year
001Sodium, total [as Na]MO AVG report only all year
001Sodium, total [as Na]DAILY MX report only all year
001Chloride [as Cl]WKLY AVG report only all year
001Chloride [as Cl]MO AVG <= 250 mg/L all year
001Chloride [as Cl]DAILY MX report only all year
001Sulfate, total [as SO4]WKLY AVG report only all year
001Sulfate, total [as SO4]MO AVG <= 750 mg/L all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Iron, total [as Fe]WKLY AVG report only all year
001Iron, total [as Fe]MO AVG report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Flow, in conduit or thru treatment plant30DA AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MN report only all year
001Chlorine, total residualMO AVG <= .011 mg/L all year
001Chlorine, total residualDAILY MX <= .019 mg/L all year
001Flow, totalTOTAL report only all year
001Solids, total dissolved [TDS]DAILY MN report only all year
001Solids, total dissolved [TDS]MO AVG report only all year
001Solids, total dissolved [TDS]WKLY AVG report only all year
001Oil and grease visualTOTAL <= 0 N=0;Y=1 all year
001Toxic Units Static 48HR Acute Ceriodaphnia dubiaTOTAL <= 1 tox acute all year
001TU LC50 Static Renewal 96Hr Acute Pimephales promelasTOTAL <= 1 tox acute 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