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Western Dubuque Biodiesel, LLC

Industrial Organic Chemicals, Farley, Iowa. NPDES permit IA0081175 expired Oct 29, 2012; its limits still apply. Last 12 months: no values over a limit, 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form A monthly (10 values)
Last report on file: August 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 1 of 12 reports late

Limits in force (10)

Parameter	Statistic	Limit	Months
pH	daily minimum	≥ 6 SU	all year
pH	daily maximum	≤ 9 SU	all year
Solids, total suspended	30-day average	≤ 30 mg/L	all year
Solids, total suspended	daily maximum	≤ 45 mg/L	all year
Solids, total suspended	30-day average	≤ 15 lb/d	all year
Solids, total suspended	daily maximum	≤ 22.5 lb/d	all year
Chlorine, total residual	30-day average	≤ .029 mg/L	all year
Chlorine, total residual	daily maximum	≤ .05 mg/L	all year
Chlorine, total residual	30-day average	≤ .015 lb/d	all year
Chlorine, total residual	daily maximum	≤ .025 lb/d	all year

How strict are these limits?

Chlorine, total residual, 30-day average .029 mg/L — stricter than 48% of 106 other minor industrial and other permits in Iowa
Chlorine, total residual, daily maximum .05 mg/L — stricter than 44% of 107 other minor industrial and other permits in Iowa
Solids, total suspended, 30-day average 30 mg/L — stricter than 40% of 289 other minor industrial and other permits in Iowa; 56% 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/IA0081175 · MCP: https://passage-data.com/mcp