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Vulcan Construction Materials LLC

Lime, Naperville, Illinois. NPDES permit IL0079561, in force until Sep 30, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 25 days after each period: form 0 monthly (7 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 (8)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6.5 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	30-day average	≤ 15 mg/L	all year
Solids, total suspended	daily maximum	≤ 30 mg/L	all year
Oil & Grease	30-day average	≤ 15 mg/L	all year
Oil & Grease	daily maximum	≤ 30 mg/L	all year
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year
Mercury, total [as Hg]	daily maximum	report only (ug/L)	Jan, Apr, Jul, Oct

How strict are these limits?

pH, minimum at least 6.5 SU — stricter than 84% of 395 other minor industrial and other permits in Illinois; 16% have the same limit
Solids, total suspended, 30-day average 15 mg/L — stricter than 37% of 259 other minor industrial and other permits in Illinois; 48% have the same limit
Solids, total suspended, daily maximum 30 mg/L — stricter than 20% of 508 other minor industrial and other permits in Illinois; 24% have the same limit

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

Same industry: the 11 Stone, Clay, Glass and Concrete Products permits in Illinois.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IL0079561 · MCP: https://passage-data.com/mcp