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Corn, LP

Industrial Organic Chemicals, Goldfield, Iowa. NPDES permit IA0079545, in force until Aug 31, 2027. Last 12 months: over a limit once (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form A monthly (6 values)
Renewal application due: Mar 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file: August 2026
Oct 2024 – Sep 2025: 2 values over a limit, 0 required values missing, 0 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Parameter	Reported	Limit	Over by
May 2026	Chlorine, total residual, daily maximum	.05	≤ .033 mg/L	52%

Limits in force (6)

Parameter	Statistic	Limit	Months
pH	daily minimum	≥ 6.5 SU	all year
pH	daily maximum	≤ 9 SU	all year
Chlorine, total residual	30-day average	≤ .019 mg/L	all year
Chlorine, total residual	daily maximum	≤ .033 mg/L	all year
Chlorine, total residual	30-day average	≤ .048 lb/d	all year
Chlorine, total residual	daily maximum	≤ .082 lb/d	all year

How strict are these limits?

Chlorine, total residual, 30-day average .019 mg/L — stricter than 60% of 106 other minor industrial and other permits in Iowa; 1% have the same limit
pH, daily minimum at least 6.5 SU — stricter than 60% of 423 other minor industrial and other permits in Iowa; 39% have the same limit
Chlorine, total residual, daily maximum .033 mg/L — stricter than 57% of 107 other minor industrial and other permits in Iowa; 1% have the same limit

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/IA0079545 · MCP: https://passage-data.com/mcp