SD Soybean Processors - Miller Facility

NPDES permit SD0028644 · Minor NON-POTW · administratively continued, expires 2026-08-31 · 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 2026-08-31 and is administratively continued: 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)
2of 12 forms filed late

Last period with anything received: 2026-08-31.

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 (25)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheit30DA AVG report only (alert) all year
001Temperature, water deg. fahrenheitDAILY MX <= 80 deg F (alert) all year
001Temperature, water deg. fahrenheit30DA AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX <= 80 deg F all year
001Flow rate30DA AVG report only all year
001Flow rateDAILY MX report only all year
001Conductivity30DA AVG <= 2500 umho/cm all year
001ConductivityDAILY MX <= 4375 umho/cm all year
001BOD, 5-day, 20 deg. C30DA AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspended30DA AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
001Nitrogen, ammonia total [as N]30DA AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]30DA AVG report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Floating solids, waste or visible foam-visualVALUE <= 0 abst=0;prst=1 all year
001Flow, totalMO TOTAL report only all year
001Solids, total dissolved30DA AVG <= 2500 mg/L all year
001Solids, total dissolvedDAILY MX <= 4375 mg/L all year
001Oil and grease visualVALUE <= 0 abst=0;prst=1 all year
001Discharge event observation [Visual Monitoring]VALUE <= 0 abst=0;prst=1 (alert) 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