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Wendling Quarries, Inc.

Crushed And Broken Limestone, De Witt, Iowa. NPDES permit IA0080951, in force until Jan 31, 2027. 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 (10 values)
Renewal application due: Aug 4, 2026 · 180 days before expiry; your permit may set another date
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 (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	≤ .225 lb/d	all year
Solids, total suspended	daily maximum	≤ .338 lb/d	all year
Oil & Grease	30-day average	≤ 10 mg/L	all year
Oil & Grease	daily maximum	≤ 15 mg/L	all year
Oil & Grease	30-day average	≤ .075 lb/d	all year
Oil & Grease	daily maximum	≤ .113 lb/d	all year

How strict are these limits?

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
Oil & Grease, daily maximum 15 mg/L — stricter than 17% of 41 other minor industrial and other permits in Iowa; 76% have the same limit
Oil & Grease, 30-day average 10 mg/L — stricter than 15% of 40 other minor industrial and other permits in Iowa; 78% have the same limit

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

Same industry: the 4 Mining and Quarrying of Nonmetallic Minerals 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/IA0080951 · MCP: https://passage-data.com/mcp