Rahr Malting Co.

NPDES permit MN0031917 · Minor NON-POTW · expired, expires 2024-01-31 · 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.

This permit expired on 2024-01-31 and is expired: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
0required values missing, on 0 form(s)
0of 33 forms filed late

Last period with anything received: 2026-07-31.

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 (51)

OutfallParameterStatisticLimitMonths
D004Temperature, water deg. centigradeMO MIN report only all year
D004Temperature, water deg. centigradeMO AVG report only all year
D004Temperature, water deg. centigradeMO MAX <= 30 deg C all year
D004pHMO MIN >= 6 SU all year
D004pHMO MAX <= 9 SU all year
D004Flow, in conduit or thru treatment plantMO AVG report only all year
D004Flow, in conduit or thru treatment plantMO MAX report only all year
D004Flow, in conduit or thru treatment plantMO TOTAL report only all year
D005Temperature, water deg. centigradeMO MIN report only all year
D005Temperature, water deg. centigradeMO AVG report only all year
D005Temperature, water deg. centigradeMO MAX report only all year
D005Oxygen, dissolved [DO]MN WK AV >= 6 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
D005Oxygen, dissolved [DO]MN WK AV >= 7 mg/L Jan, Feb, Mar, Dec
D005pHMO MIN >= 6 SU all year
D005pHMO MAX <= 9 SU all year
D005Solids, total suspendedMO AVG <= 30 mg/L all year
D005Solids, total suspendedMO MAX <= 45 mg/L all year
D005Solids, total suspendedMO AVG <= 170 kg/d all year
D005Solids, total suspendedMO MAX <= 426 kg/d all year
D005Nitrogen, total [as N]MO AVG report only all year
D005Nitrogen, total [as N]MO AVG report only all year
D005Nitrogen, ammonia total [as N]MO AVG <= 12 mg/L Jun
D005Nitrogen, ammonia total [as N]MO AVG report only Jan, Feb, Mar, Apr, Dec
D005Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L Oct
D005Nitrogen, ammonia total [as N]MO AVG <= 9 mg/L May
D005Nitrogen, ammonia total [as N]MO AVG <= 7 mg/L Nov
D005Nitrogen, ammonia total [as N]MO AVG <= 2 mg/L Jul, Aug, Sep
D005Nitrogen, ammonia total [as N]MO AVG <= 68 kg/d Jun
D005Nitrogen, ammonia total [as N]MO AVG report only Jan, Feb, Mar, Apr, Dec
D005Nitrogen, ammonia total [as N]MO AVG <= 28 kg/d Oct
D005Nitrogen, ammonia total [as N]MO AVG <= 51 kg/d May
D005Nitrogen, ammonia total [as N]MO AVG <= 40 kg/d Nov
D005Nitrogen, ammonia total [as N]MO AVG <= 11 kg/d Jul, Aug, Sep
D005Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D005Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D005Nitrite + Nitrate total [as N]MO AVG report only all year
D005Nitrite + Nitrate total [as N]MO AVG report only all year
D005Phosphorus, total [as P]MO AVG <= 1 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
D005Phosphorus, total [as P]MO AVG <= 1 mg/L Jun, Jul, Aug, Sep
D005Phosphorus, total [as P]MO AVG <= 11 kg/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
D005Phosphorus, total [as P]MO AVG <= 10.2 kg/d Jun, Jul, Aug, Sep
D005Phosphorus, total [as P]ANNL TOT <= 3329 kg/yr all year
D005Sulfate, total [as SO4]QRTR AVG report only Mar, Jun, Sep, Dec
D005Flow, in conduit or thru treatment plantMO AVG report only all year
D005Flow, in conduit or thru treatment plantMO MAX report only all year
D005Flow, in conduit or thru treatment plantMO TOTAL report only all year
D005Solids, total dissolvedMO AVG report only Mar, Sep
D005BOD, carbonaceous [5 day, 20 C]MO AVG <= 12 mg/L all year
D005BOD, carbonaceous [5 day, 20 C]MO MAX <= 18 mg/L all year
D005BOD, carbonaceous [5 day, 20 C]MO AVG <= 96.5 kg/d all year
D005BOD, carbonaceous [5 day, 20 C]MO MAX <= 170 kg/d 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