Darling Ingredients Inc

NPDES permit MN0002313 · Minor NON-POTW · effective, expires 2028-12-31 · 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

2values over a limit
0required values missing, on 0 form(s)
0of 56 forms filed late

Last period with anything received: 2026-06-30. Most often over: BOD, carbonaceous [5 day, 20 C] (1), Solids, total suspended (1).

Reporting

Reports are due about 47 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (96)

OutfallParameterStatisticLimitMonths
D007Specific conductanceQB report only Mar, Jun, Sep, Dec
D007Oxygen, dissolved [DO]MO MIN report only all year
D007pHMO MIN >= 6 SU all year
D007pHMO MAX <= 9 SU all year
D007Bicarbonate ion- [as HCO3]QB report only Mar, Jun, Sep, Dec
D007Solids, total suspendedMO AVG <= 30 mg/L all year
D007Solids, total suspendedDAILY MX <= 60 mg/L all year
D007Solids, total suspendedMO AVG <= 62.8 kg/d all year
D007Solids, total suspendedDAILY MX <= 125.6 kg/d all year
D007Oil and grease, hexane extr methodMO AVG <= 10 mg/L all year
D007Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
D007Oil and grease, hexane extr methodMO AVG <= 21 kg/d all year
D007Oil and grease, hexane extr methodDAILY MX <= 31.5 kg/d all year
D007Nitrogen, total [as N]MO AVG <= 134 mg/L all year
D007Nitrogen, total [as N]DAILY MX <= 194 mg/L all year
D007Nitrogen, ammonia total [as N]MO AVG <= 3.8 mg/L Oct
D007Nitrogen, ammonia total [as N]MO AVG <= 50 mg/L Apr
D007Nitrogen, ammonia total [as N]MO AVG <= 2.3 mg/L Sep
D007Nitrogen, ammonia total [as N]MO AVG <= 12 mg/L Dec
D007Nitrogen, ammonia total [as N]MO AVG <= 11 mg/L May
D007Nitrogen, ammonia total [as N]MO AVG <= 33 mg/L Mar
D007Nitrogen, ammonia total [as N]MO AVG <= 10 mg/L Nov
D007Nitrogen, ammonia total [as N]MO AVG <= 12 mg/L Jun
D007Nitrogen, ammonia total [as N]MO AVG report only all year
D007Nitrogen, Kjeldahl, total [as N]MO AVG report only Mar, Apr, May, Jun, Sep, Oct, Nov, Dec
D007Nitrogen, Kjeldahl, total [as N]DAILY MX report only Mar, Apr, May, Jun, Sep, Oct, Nov, Dec
D007Nitrite + Nitrate total [as N]MO AVG report only all year
D007Nitrite + Nitrate total [as N]DAILY MX report only all year
D007Phosphorus, total [as P]MO AVG report only all year
D007Chloride [as Cl]QB report only Mar, Jun, Sep, Dec
D007Sulfate, total [as SO4]QB report only Mar, Jun, Sep, Dec
D007Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D007Coliform, fecal MPN + membrane ftl 44.5 CDAILY MX <= 400 #/100mL all year
D007Flow, in conduit or thru treatment plantMO AVG report only all year
D007Flow, in conduit or thru treatment plantDAILY MX report only all year
D007Flow, in conduit or thru treatment plantMO TOTAL report only all year
D007Solids, total dissolvedQB report only Mar, Jun, Sep, Dec
D007BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D007BOD, carbonaceous [5 day, 20 C]DAILY MX <= 50 mg/L all year
D007BOD, carbonaceous [5 day, 20 C]MO AVG <= 52.3 kg/d all year
D007BOD, carbonaceous [5 day, 20 C]DAILY MX <= 104.7 kg/d all year
D008Specific conductanceQB report only Mar, Jun, Sep, Dec
D008Oxygen, dissolved [DO]DAILY MN >= 6 mg/L Jan, Feb, Mar, Dec
D008Oxygen, dissolved [DO]DAILY MN report only Apr, May, Oct, Nov
D008Oxygen, dissolved [DO]DAILY MN >= 5 mg/L Jun, Jul, Aug, Sep
D008pHMO MIN >= 6 SU all year
D008pHMO MAX <= 9 SU all year
D008Solids, total suspendedMO AVG <= 30 mg/L all year
D008Solids, total suspendedDAILY MX <= 60 mg/L all year
D008Solids, total suspendedMO AVG <= 62.8 kg/d all year
D008Solids, total suspendedDAILY MX <= 125.6 kg/d all year
D008Oil and grease, hexane extr methodMO AVG <= 10 mg/L all year
D008Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
D008Oil and grease, hexane extr methodMO AVG <= 5.7 kg/d all year
D008Oil and grease, hexane extr methodDAILY MX <= 8.5 kg/d all year
D008Nitrogen, total [as N]MO AVG <= 134 mg/L all year
D008Nitrogen, total [as N]DAILY MX <= 194 mg/L all year
D008Nitrogen, ammonia total [as N]MO AVG <= 31 mg/L Jan, Feb, Mar, Dec
D008Nitrogen, ammonia total [as N]MO AVG <= 4.6 mg/L Jun, Jul, Aug, Sep
D008Nitrogen, ammonia total [as N]MO AVG <= 12 mg/L Oct, Nov
D008Nitrogen, ammonia total [as N]DAILY MX <= 53 mg/L Apr, May
D008Nitrogen, ammonia total [as N]MO AVG <= 17.6 kg/d Jan, Feb, Mar, Dec
D008Nitrogen, ammonia total [as N]MO AVG <= 2.6 kg/d Jun, Jul, Aug, Sep
D008Nitrogen, ammonia total [as N]MO AVG <= 6.8 kg/d Oct, Nov
D008Nitrogen, ammonia total [as N]DAILY MX <= 30.1 kg/d Apr, May
D008Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D008Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
D008Nitrite + Nitrate total [as N]MO AVG report only all year
D008Nitrite + Nitrate total [as N]DAILY MX report only all year
D008Phosphorus, total [as P]MO AVG report only all year
D008Phosphorus, total [as P]MO TOTAL report only all year
D008Chloride [as Cl]QB report only Mar, Jun, Sep, Dec
D008Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D008Coliform, fecal MPN + membrane ftl 44.5 CDAILY MX <= 400 #/100mL all year
D008Flow, in conduit or thru treatment plantMO AVG report only all year
D008Flow, in conduit or thru treatment plantDAILY MX report only all year
D008Flow, in conduit or thru treatment plantMO TOTAL report only all year
D008BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D008BOD, carbonaceous [5 day, 20 C]DAILY MX <= 50 mg/L all year
D008BOD, carbonaceous [5 day, 20 C]MO AVG <= 14.2 kg/d all year
D008BOD, carbonaceous [5 day, 20 C]DAILY MX <= 28.4 kg/d all year
D008Solids, suspended percent removalMO AV MN >= 85 % all year
D009Solids, total suspendedYA <= 20097 kg/yr all year
D009Phosphorus, total [as P]MO AVG <= .83 kg/d Jun, Jul, Aug, Sep
D009Phosphorus, total [as P]ANNL TOT <= 83 kg/yr all year
D011Solids, total suspendedANNL AVG report only all year
D011Nitrogen, ammonia total [as N]ANNL AVG report only all year
D011BOD, carbonaceous [5 day, 20 C]ANNL AVG report only all year
D011Chemical Oxygen Demand [COD]ANNL AVG report only all year
S010pHINST MIN report only Mar, Jun, Sep, Dec
S010pHINST MAX report only Mar, Jun, Sep, Dec
S010Solids, total suspendedMO AVG report only all year
S010Flow, in conduit or thru treatment plantMO AVG report only all year
S010Flow, in conduit or thru treatment plantMO MAX report only all year
S010Flow, in conduit or thru treatment plantMO TOTAL report only all year
S010BOD, carbonaceous [5 day, 20 C]MO 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