WESTERN SUGAR COOPERATIVE

NPDES permit MT0000281 · Major NON-POTW · administratively continued, expires 2014-11-30 · 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 2014-11-30 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

40values over a limit
0required values missing, on 0 form(s)
0of 91 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (20), Chlorine, total residual (10), Specific conductance (7).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among MT permits in EPA's filings — check your permit).

Limits in force (162)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MN report only all year
001Temperature, water deg. fahrenheit30DA AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX <= 77 deg F all year
001Flow rate30DA AVG report only all year
001Flow rateDAILY MX report only all year
001BOD, 5-day, 20 deg. C30DA AVG <= 2640 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 3960 mg/L all year
001pHDAILY MN >= 6 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
001Solids, total suspended30DA AVG <= 2640 lb/d all year
001Solids, total suspendedDAILY MX <= 3960 lb/d all year
001Nitrogen, ammonia total [as N]30DA AVG <= 2.8 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 7.08 mg/L all year
001Nitrogen, Kjeldahl, total [as N]30DA AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]DAILY MX <= 10 mg/L all year
001Phosphorus, total [as P]30DA AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Hardness, total [as CaCO3]30DA AVG report only all year
001Arsenic, total recoverableSINGSAMP report only all year
001Iron, total recoverableSINGSAMP report only all year
001Selenium, total recoverableSINGSAMP report only all year
001Lead, total recoverableSINGSAMP report only all year
001E. coli, MTEC-MF30DA AVG <= 126 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residual30DA AVG <= .011 mg/L all year
001Chlorine, total residualDAILY MX <= .019 mg/L all year
001Solids, total dissolved [TDS]30DA AVG report only all year
001Mercury, total recoverableSINGSAMP report only all year
001Coliform, fecal generalDAILY MX <= 400 MPN/100mL all year
001Oil and grease visualVALUE report only all year
001Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubiaVALUE <= 0 pass=0;fail=1 all year
001Pass/Fail Static Renewal 96Hr Acute Pimephales PromelasVALUE <= 0 pass=0;fail=1 all year
002Temperature, water deg. fahrenheit30DA AVG report only all year
002Temperature, water deg. fahrenheitDAILY MX <= 77 deg F all year
002Flow rate30DA AVG report only all year
002Flow rateDAILY MX report only all year
002BOD, 5-day, 20 deg. C30DA AVG <= 2640 mg/L all year
002BOD, 5-day, 20 deg. CDAILY MX <= 3960 mg/L all year
002pHDAILY MN >= 6 SU all year
002pHDAILY MX <= 9 SU all year
002Solids, total suspended30DA AVG report only all year
002Solids, total suspendedDAILY MX report only all year
002Solids, total suspended30DA AVG <= 2640 lb/d all year
002Solids, total suspendedDAILY MX <= 3960 lb/d all year
002Oil and grease, hexane extr methodINST MAX <= 10 mg/L all year
002Nitrogen, ammonia total [as N]30DA AVG <= 2.8 mg/L all year
002Nitrogen, ammonia total [as N]DAILY MX <= 7.08 mg/L all year
002Nitrite + Nitrate total [as N]DAILY MX <= 10 mg/L all year
002Phosphorus, total [as P]30DA AVG report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Hardness, total [as CaCO3]30DA AVG report only all year
002Arsenic, total recoverableSINGSAMP report only all year
002Iron, total recoverableSINGSAMP report only all year
002Selenium, total recoverableSINGSAMP report only all year
002Lead, total recoverableSINGSAMP report only all year
002E. coli, MTEC-MF30DA AVG <= 126 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
002Chlorine, total residual30DA AVG <= .011 mg/L all year
002Chlorine, total residualDAILY MX <= .019 mg/L all year
002Solids, total dissolved [TDS]30DA AVG report only all year
002Mercury, total recoverableSINGSAMP report only all year
002Coliform, fecal generalDAILY MX <= 400 MPN/100mL all year
002Oil and grease visualVALUE report only all year
002Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubiaVALUE <= 0 pass=0;fail=1 all year
002Pass/Fail Static Renewal 48Hr Acute Pimephales promelasVALUE <= 0 pass=0;fail=1 all year
004Specific conductanceDAILY MX <= 2500 umho/cm all year
004Nitrogen, ammonia total [as N]DAILY MX <= 35 mg/L all year
OBSTemperature, water deg. centigradeSINGSAMP report only all year
OBSRedox [oxidation reduction potential]SINGSAMP report only all year
OBSSpecific conductanceSINGSAMP report only all year
OBSpHSINGSAMP report only all year
OBSNitrogen, ammonia total [as N]SINGSAMP report only all year
OBSNitrogen, Kjeldahl, total [as N]SINGSAMP report only all year
OBSIron, dissolved [as Fe]SINGSAMP report only all year
OBSWater level at sample collection timeSingle Rdg report only all year
W02Temperature, water deg. centigradeSINGSAMP report only all year
W02Redox [oxidation reduction potential]SINGSAMP report only all year
W02Specific conductanceSINGSAMP report only all year
W02pHSINGSAMP report only all year
W02Nitrogen, ammonia total [as N]SINGSAMP report only all year
W02Nitrogen, Kjeldahl, total [as N]SINGSAMP report only all year
W02Iron, dissolved [as Fe]SINGSAMP report only all year
W02Water level at sample collection timeSINGSAMP report only all year
W03Temperature, water deg. centigradeSINGSAMP report only all year
W03Redox [oxidation reduction potential]SINGSAMP report only all year
W03Specific conductanceSINGSAMP report only all year
W03pHSINGSAMP report only all year
W03Nitrogen, ammonia total [as N]SINGSAMP report only all year
W03Nitrogen, Kjeldahl, total [as N]SINGSAMP report only all year
W03Arsenic, dissolved [as As]SINGSAMP report only all year
W03Iron, dissolved [as Fe]SINGSAMP report only all year
W03Lead, dissolved [as Pb]SINGSAMP report only all year
W03Selenium, dissolved [as Se]SINGSAMP report only all year
W03Mercury, dissolved [as Hg]SINGSAMP report only all year
W03Water level at sample collection timeSINGSAMP report only all year
W04Temperature, water deg. centigradeSINGSAMP report only all year
W04Redox [oxidation reduction potential]SINGSAMP report only all year
W04Specific conductanceSINGSAMP report only all year
W04pHSINGSAMP report only all year
W04Nitrogen, ammonia total [as N]SINGSAMP report only all year
W04Nitrogen, Kjeldahl, total [as N]SINGSAMP report only all year
W04Arsenic, dissolved [as As]SINGSAMP report only all year
W04Iron, dissolved [as Fe]SINGSAMP report only all year
W04Lead, dissolved [as Pb]SINGSAMP report only all year
W04Selenium, dissolved [as Se]SINGSAMP report only all year
W04Mercury, dissolved [as Hg]SINGSAMP report only all year
W04Water level at sample collection timeSINGSAMP report only all year
W05Temperature, water deg. centigradeSINGSAMP report only all year
W05Redox [oxidation reduction potential]SINGSAMP report only all year
W05Specific conductanceSINGSAMP report only all year
W05pHSINGSAMP report only all year
W05Nitrogen, ammonia total [as N]SINGSAMP report only all year
W05Nitrogen, Kjeldahl, total [as N]SINGSAMP report only all year
W05Arsenic, dissolved [as As]SINGSAMP report only all year
W05Iron, dissolved [as Fe]SINGSAMP report only all year
W05Lead, dissolved [as Pb]SINGSAMP report only all year
W05Selenium, dissolved [as Se]SINGSAMP report only all year
W05Mercury, dissolved [as Hg]SINGSAMP report only all year
W05Water level at sample collection timeSINGSAMP report only all year
W06Temperature, water deg. centigradeSINGSAMP report only all year
W06Redox [oxidation reduction potential]SINGSAMP report only all year
W06Specific conductanceSINGSAMP report only all year
W06pHSINGSAMP report only all year
W06Nitrogen, ammonia total [as N]SINGSAMP report only all year
W06Nitrogen, Kjeldahl, total [as N]SINGSAMP report only all year
W06Arsenic, dissolved [as As]SINGSAMP report only all year
W06Iron, dissolved [as Fe]SINGSAMP report only all year
W06Lead, dissolved [as Pb]SINGSAMP report only all year
W06Selenium, dissolved [as Se]SINGSAMP report only all year
W06Mercury, dissolved [as Hg]SINGSAMP report only all year
W06Water level at sample collection timeSingle Rdg report only all year
W08Temperature, water deg. centigradeSINGSAMP report only all year
W08Redox [oxidation reduction potential]SINGSAMP report only all year
W08Specific conductanceSINGSAMP report only all year
W08pHSINGSAMP report only all year
W08Nitrogen, ammonia total [as N]SINGSAMP report only all year
W08Nitrogen, Kjeldahl, total [as N]SINGSAMP report only all year
W08Iron, dissolved [as Fe]SINGSAMP report only all year
W08Water level at sample collection timeSINGSAMP report only all year
W09Temperature, water deg. centigradeSINGSAMP report only Apr, May, Jun, Jul, Aug, Sep
W09Temperature, water deg. centigradeSINGSAMP report only Jan, Feb, Mar, Oct, Nov, Dec
W09Redox [oxidation reduction potential]SINGSAMP report only Apr, May, Jun, Jul, Aug, Sep
W09Redox [oxidation reduction potential]SINGSAMP report only Jan, Feb, Mar, Oct, Nov, Dec
W09Specific conductanceSINGSAMP report only Apr, May, Jun, Jul, Aug, Sep
W09Specific conductanceSINGSAMP report only Jan, Feb, Mar, Oct, Nov, Dec
W09pHSINGSAMP report only Apr, May, Jun, Jul, Aug, Sep
W09pHSINGSAMP report only Jan, Feb, Mar, Oct, Nov, Dec
W09Nitrogen, ammonia total [as N]SINGSAMP report only Apr, May, Jun, Jul, Aug, Sep
W09Nitrogen, ammonia total [as N]SINGSAMP report only Jan, Feb, Mar, Oct, Nov, Dec
W09Nitrogen, Kjeldahl, total [as N]QB report only all year
W09Iron, dissolved [as Fe]QB report only all year
W09Water level at sample collection timeSINGSAMP report only Apr, May, Jun, Jul, Aug, Sep
W09Water level at sample collection timeSINGSAMP report only Jan, Feb, Mar, Oct, Nov, Dec
W12Temperature, water deg. centigradeSINGSAMP report only all year
W12Redox [oxidation reduction potential]SINGSAMP report only all year
W12Specific conductanceSINGSAMP report only all year
W12pHSINGSAMP report only all year
W12Nitrogen, ammonia total [as N]SINGSAMP report only all year
W12Nitrogen, Kjeldahl, total [as N]SINGSAMP report only all year
W12Iron, dissolved [as Fe]SINGSAMP report only all year
W12Water level at sample collection timeSINGSAMP 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