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Little Sioux Corn Processors, LLC

Industrial Organic Chemicals, Marcus, Iowa. NPDES permit IA0077275 expired Apr 30, 2025; its limits still apply. 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 (14 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (14)

ParameterStatisticLimitMonths
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Sulfate, total [as SO4]30-day average≤ 2035 mg/Lall year
Sulfate, total [as SO4]daily maximum≤ 2035 mg/Lall year
Sulfate, total [as SO4]30-day average≤ 16228 lb/dall year
Sulfate, total [as SO4]daily maximum≤ 16228 lb/dall year
Iron, total [as Fe]30-day average≤ 1.018 mg/Lall year
Iron, total [as Fe]daily maximum≤ 1.018 mg/Lall year
Iron, total [as Fe]30-day average≤ 8.119 lb/dall year
Iron, total [as Fe]daily maximum≤ 8.119 lb/dall year
Chlorine, total residual30-day average≤ .016 mg/Lall year
Chlorine, total residualdaily maximum≤ .026 mg/Lall year
Chlorine, total residual30-day average≤ .156 lb/dall year
Chlorine, total residualdaily maximum≤ .255 lb/dall year

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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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0077275 · MCP: https://passage-data.com/mcp