Minnesota Power - Rapids Energy Center

NPDES permit MN0000990 · Major NON-POTW · effective, expires 2031-06-30 · 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

1values over a limit
28required values missing, on 3 form(s)
0of 25 forms filed late

Last period with anything received: 2026-07-31. Most often over: Temperature, water deg. fahrenheit (1).

Reporting

Reports are due about 21 days after each monitoring period ends (the most common figure among MN permits in EPA's filings — check your permit).

Limits in force (100)

OutfallParameterStatisticLimitMonths
D020Temperature, water deg. fahrenheitMX DA AV <= 56 deg F Feb
D020Temperature, water deg. fahrenheitMX DA AV <= 55 deg F Jan
D020Temperature, water deg. fahrenheitMX DA AV <= 55 deg F Dec
D020Temperature, water deg. fahrenheitMX DA AV <= 68 deg F Oct
D020Temperature, water deg. fahrenheitMX DA AV <= 86 deg F Aug
D020Temperature, water deg. fahrenheitMX DA AV <= 89 deg F Jul
D020Temperature, water deg. fahrenheitMX DA AV <= 80 deg F Sep
D020Temperature, water deg. fahrenheitMX DA AV <= 86 deg F Jun
D020Temperature, water deg. fahrenheitMX DA AV <= 84 deg F May
D020Temperature, water deg. fahrenheitMX DA AV <= 65 deg F Apr
D020Temperature, water deg. fahrenheitMX DA AV <= 57 deg F Mar
D020Temperature, water deg. fahrenheitMX DA AV <= 55 deg F Nov
D020Temperature, water deg. fahrenheitDAILY MX report only all year
D020Plant capacity fact. percent of capacityMX DA AV report only all year
D020Solids, total suspendedQB report only Mar, Jun, Sep, Dec
D020Nitrogen, total [as N]ANNL AVG report only all year
D020Nitrogen, Kjeldahl, total [as N]ANNL AVG report only all year
D020Nitrite + Nitrate total [as N]ANNL AVG report only all year
D020Phosphorus, total [as P]ANNL AVG report only all year
D020Sulfate, total [as SO4]DAILY MX report only all year
D020Copper, total [as Cu]DAILY MX report only all year
D020Flow, in conduit or thru treatment plantMO AVG report only all year
D020Flow, in conduit or thru treatment plantMO MAX report only all year
D020Flow, in conduit or thru treatment plantMO TOTAL report only all year
D020Chlorine, total residualDAILY MX <= .2 mg/L all year
D020Chlorine, total residualDAILY MX <= 8.6 kg/d all year
D020ChlorinationDAILY MX <= 2 hr/d all year
D020Mercury, dissolved [as Hg]QB report only Mar, Jun, Sep, Dec
D020Mercury, total [as Hg]QB report only Mar, Jun, Sep, Dec
D021Specific conductanceANNL MAX report only all year
D021pHINST MIN >= 6 SU all year
D021pHINST MAX <= 9 SU all year
D021Solids, total suspendedMO AVG <= 30 mg/L all year
D021Solids, total suspendedDAILY MX <= 83.2 mg/L all year
D021Solids, total suspendedMO AVG <= 8.9 kg/d all year
D021Solids, total suspendedDAILY MX <= 24.6 kg/d all year
D021Oil and grease, hexane extr methodMO AVG <= 10 mg/L all year
D021Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
D021Oil and grease, hexane extr methodMO AVG <= 3 kg/d all year
D021Oil and grease, hexane extr methodDAILY MX <= 4.4 kg/d all year
D021Nitrogen, total [as N]ANNL AVG report only all year
D021Nitrogen, Kjeldahl, total [as N]ANNL AVG report only all year
D021Nitrite + Nitrate total [as N]ANNL AVG report only all year
D021Phosphorus, total [as P]MO MAX report only all year
D021Chloride [as Cl]ANNL MAX report only all year
D021Sulfate, total [as SO4]ANNL MAX report only all year
D021Fluoride, total [as F]ANNL MAX report only all year
D021Boron, dissolved [as B]ANNL MAX report only all year
D021Copper, total [as Cu]ANNL MAX report only all year
D021Aluminum, total [as Al]ANNL MAX report only all year
D021Selenium, total [as Se]ANNL MAX report only all year
D021Flow, in conduit or thru treatment plantMO AVG report only all year
D021Flow, in conduit or thru treatment plantMO MAX report only all year
D021Flow, in conduit or thru treatment plantMO TOTAL report only all year
D021Chlorine, total residualDAILY MX report only all year
D021Solids, total dissolvedANNL MAX report only all year
D021Mercury, total [as Hg]MO AVG <= 1.8 ng/L all year
D021Mercury, total [as Hg]DAILY MX <= 3.2 ng/L all year
W033Temperature, water deg. centigradeMO MAX report only Apr, Oct
W033Redox [oxidation reduction potential]MO MAX report only Apr, Oct
W033Specific conductanceMO MAX report only Apr, Oct
W033Sulfate [as S]MO MAX report only Apr, Oct
W033pHMO MIN report only Apr, Oct
W033pHMO MAX report only Apr, Oct
W033Alkalinity, total [as CaCO3]MO MAX report only Apr, Oct
W033Nitrite + Nitrate total [as N]MO MAX report only Apr, Oct
W033Calcium, dissolved [as Ca]MO MAX report only Apr
W033Magnesium, dissolved [as Mg]MO MAX report only Apr
W033Sodium, total [as Na]MO MAX report only Apr
W033Potassium, total [as K]MO MAX report only Apr, Oct
W033Chloride [as Cl]MO MAX report only Apr, Oct
W033Fluoride, total [as F]MO MAX report only Apr, Oct
W033Boron, dissolved [as B]MO MAX report only Apr, Oct
W033Iron, dissolved [as Fe]MO MAX report only Apr
W033Manganese, dissolved [as Mn]MO MAX report only Apr
W033Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX report only Apr, Oct
W033Solids, total dissolvedMO MAX report only Apr, Oct
W033Mercury, total [as Hg]MO MAX report only Apr, Oct
W034Temperature, water deg. centigradeMO MAX report only Apr, Oct
W034Redox [oxidation reduction potential]MO MAX report only Apr, Oct
W034Specific conductanceMO MAX report only Apr, Oct
W034Sulfate [as S]MO MAX report only Apr, Oct
W034pHMO MIN report only Apr, Oct
W034pHMO MAX report only Apr, Oct
W034Alkalinity, total [as CaCO3]MO MAX report only Apr, Oct
W034Nitrite + Nitrate total [as N]MO MAX report only Apr, Oct
W034Calcium, dissolved [as Ca]MO MAX report only Apr
W034Magnesium, dissolved [as Mg]MO MAX report only Apr
W034Sodium, total [as Na]MO MAX report only Apr
W034Potassium, total [as K]MO MAX report only Apr, Oct
W034Chloride [as Cl]MO MAX report only Apr, Oct
W034Fluoride, total [as F]MO MAX report only Apr, Oct
W034Boron, dissolved [as B]MO MAX report only Apr, Oct
W034Iron, dissolved [as Fe]MO MAX report only Apr
W034Manganese, dissolved [as Mn]MO MAX report only Apr
W034Hardness, Ca Mg Calculated [mg/L as CaCO3]MO MAX report only Apr, Oct
W034Solids, total dissolvedMO MAX report only Apr, Oct
W034Mercury, total [as Hg]MO MAX report only Apr, Oct
W038Temperature, water deg. fahrenheitDAILY MX report only all year
W040Temperature, water deg. fahrenheitDAILY 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