Passage Data · Check a report · Use it from your AI

Poet Biorefining - Iowa Falls, LLC

Industrial Organic Chemicals, Iowa Falls, Iowa. NPDES permit IA0078841 expired Feb 28, 2015; its limits still apply. Last 12 months: no values over a limit, 4 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: outfall 001 form A monthly (6 values), outfall 002 form A monthly (3 values)
Last report on file: August 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (9)

Parameter	Statistic	Limit	Months	Outfall
pH	daily minimum	≥ 6.5 SU	all year	001
pH	daily maximum	≤ 9 SU	all year	001
Sulfate, total [as SO4]	30-day average	≤ 2283 mg/L	all year	001
Sulfate, total [as SO4]	daily maximum	≤ 2283 mg/L	all year	001
Sulfate, total [as SO4]	30-day average	≤ 14092 lb/d	all year	001
Sulfate, total [as SO4]	daily maximum	≤ 14092 lb/d	all year	001
Oxygen, dissolved [DO]	daily minimum	≥ 5 mg/L	all year	002
Oxygen, dissolved [DO]	30-day average	report only (mg/L)	all year	002
Oxygen, dissolved [DO]	daily maximum	report only (mg/L)	all year	002

How strict are these limits?

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
Oxygen, dissolved [DO], daily minimum at least 5 mg/L — stricter than 51% of 86 other minor industrial and other permits in Iowa; 48% have the same limit
Sulfate, total [as SO4], 30-day average 2283 mg/L — stricter than 16% of 25 other minor industrial and other permits in Iowa

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

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

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0078841 · MCP: https://passage-data.com/mcp