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Poet Biorefining - Fairbank, LLC

Industrial Organic Chemicals, Fairbank, Iowa. NPDES permit IA0079812, in force until Jul 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (12 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (34)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheit30-day average≤ 89.6 deg FAug
Temperature, water deg. fahrenheit30-day average≤ 71.6 deg FDec
Temperature, water deg. fahrenheit30-day average≤ 64 deg FFeb
Temperature, water deg. fahrenheit30-day average≤ 84.9 deg FOct
Temperature, water deg. fahrenheit30-day average≤ 80.6 deg FNov
Temperature, water deg. fahrenheit30-day average≤ 87.1 deg FJun
Temperature, water deg. fahrenheit30-day average≤ 75.9 deg FMar
Temperature, water deg. fahrenheit30-day average≤ 88 deg FSep
Temperature, water deg. fahrenheit30-day average≤ 89.6 deg FJul
Temperature, water deg. fahrenheit30-day average≤ 82.6 deg FMay
Temperature, water deg. fahrenheit30-day average≤ 82.6 deg FApr
Temperature, water deg. fahrenheit30-day average≤ 64 deg FJan
Temperature, water deg. fahrenheitdaily maximum≤ 89.6 deg FAug
Temperature, water deg. fahrenheitdaily maximum≤ 90.6 deg FDec
Temperature, water deg. fahrenheitdaily maximum≤ 90.8 deg FFeb
Temperature, water deg. fahrenheitdaily maximum≤ 89.9 deg FOct
Temperature, water deg. fahrenheitdaily maximum≤ 90.3 deg FNov
Temperature, water deg. fahrenheitdaily maximum≤ 89.8 deg FJun
Temperature, water deg. fahrenheitdaily maximum≤ 90.5 deg FMar
Temperature, water deg. fahrenheitdaily maximum≤ 89.8 deg FSep
Temperature, water deg. fahrenheitdaily maximum≤ 89.6 deg FJul
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg FMay
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg FApr
Temperature, water deg. fahrenheitdaily maximum≤ 90.8 deg FJan
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Solids, total suspended30-day average≤ 63 lb/dall year
Solids, total suspendeddaily maximum≤ 95 lb/dall year
Chlorine, total residual30-day average≤ .012 mg/Lall year
Chlorine, total residualdaily maximum≤ .019 mg/Lall year
Chlorine, total residual30-day average≤ .073 lb/dall year
Chlorine, total residualdaily maximum≤ .156 lb/dall year

New limits from Jul 1, 2031

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], 30-day average18.2 lb/d (Nov)new——
Nitrogen, ammonia total [as N], 30-day average2.7 mg/L (Nov)new——
Nitrogen, ammonia total [as N], 30-day average26.6 lb/d (Jan)new——
Nitrogen, ammonia total [as N], 30-day average10.3 lb/d (Jun)new——
Nitrogen, ammonia total [as N], 30-day average4 mg/L (Jan)new——
Nitrogen, ammonia total [as N], 30-day average1.5 mg/L (Jun)new——
Nitrogen, ammonia total [as N], 30-day average30.9 lb/d (Feb)new——
Nitrogen, ammonia total [as N], 30-day average1.2 mg/L (Sep)new——
Nitrogen, ammonia total [as N], 30-day average8.3 lb/d (Sep)new——
Nitrogen, ammonia total [as N], 30-day average4.6 mg/L (Feb)new——
Nitrogen, ammonia total [as N], 30-day average1.8 mg/L (Apr)new——
Nitrogen, ammonia total [as N], 30-day average12 lb/d (Apr)new——
Nitrogen, ammonia total [as N], 30-day average2.9 mg/L (Dec)new——
Nitrogen, ammonia total [as N], 30-day average19.4 lb/d (Dec)new——
Nitrogen, ammonia total [as N], 30-day average1.8 mg/L (Oct)new——
Nitrogen, ammonia total [as N], 30-day average12.2 lb/d (Oct)new——
Nitrogen, ammonia total [as N], 30-day average7.5 lb/d (Aug)new——
Nitrogen, ammonia total [as N], 30-day average1.1 mg/L (Aug)new——
Nitrogen, ammonia total [as N], 30-day average2 mg/L (May)new——
Nitrogen, ammonia total [as N], 30-day average13.7 lb/d (May)new——
Nitrogen, ammonia total [as N], 30-day average7.9 lb/d (Jul)new——
Nitrogen, ammonia total [as N], 30-day average1.2 mg/L (Jul)new——
Nitrogen, ammonia total [as N], 30-day average4 mg/L (Mar)new——
Nitrogen, ammonia total [as N], 30-day average26.6 lb/d (Mar)new——
Nitrogen, ammonia total [as N], daily maximum74 lb/d (Jan)new——
Nitrogen, ammonia total [as N], daily maximum5.9 mg/L (Jun)new——
Nitrogen, ammonia total [as N], daily maximum4.8 mg/L (Sep)new——
Nitrogen, ammonia total [as N], daily maximum34.6 lb/d (Sep)new——
Nitrogen, ammonia total [as N], daily maximum5.8 mg/L (Nov)new——
Nitrogen, ammonia total [as N], daily maximum10.2 mg/L (Jan)new——
Nitrogen, ammonia total [as N], daily maximum42 lb/d (Nov)new——
Nitrogen, ammonia total [as N], daily maximum42.2 lb/d (Jun)new——
Nitrogen, ammonia total [as N], daily maximum7 mg/L (Feb)new——
Nitrogen, ammonia total [as N], daily maximum50.9 lb/d (Feb)new——
Nitrogen, ammonia total [as N], daily maximum42 lb/d (Apr)new——
Nitrogen, ammonia total [as N], daily maximum5.8 mg/L (Apr)new——
Nitrogen, ammonia total [as N], daily maximum7 mg/L (Dec)new——
Nitrogen, ammonia total [as N], daily maximum50.8 lb/d (Dec)new——
Nitrogen, ammonia total [as N], daily maximum5.8 mg/L (Oct)new——
Nitrogen, ammonia total [as N], daily maximum42 lb/d (Oct)new——
Nitrogen, ammonia total [as N], daily maximum5.9 mg/L (Aug)new——
Nitrogen, ammonia total [as N], daily maximum42.2 lb/d (Aug)new——
Nitrogen, ammonia total [as N], daily maximum4.8 mg/L (May)new——
Nitrogen, ammonia total [as N], daily maximum34.7 lb/d (May)new——
Nitrogen, ammonia total [as N], daily maximum42.2 lb/d (Jul)new——
Nitrogen, ammonia total [as N], daily maximum5.9 mg/L (Jul)new——
Nitrogen, ammonia total [as N], daily maximum8.5 mg/L (Mar)new——
Nitrogen, ammonia total [as N], daily maximum61.6 lb/d (Mar)new——

How strict are these limits?

Cited limits by parameter: Iowa's rules and the federal ones.

Same industry: the 57 Chemicals and Allied Products permits in Iowa.

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