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Smyrna Ready Mix Concrete LLC Plant #212

Ready-Mixed Concrete, Aurora, Indiana. NPDES permit INRM02231, in force until Jul 13, 2027. No reports in EPA's file for the last 12 months. Source: EPA ECHO, Oct 22, 2026.

Renewal application due: Jan 14, 2027 · 180 days before expiry; your permit may set another date
Last report on file: None in EPA's file for the last 12 months; that may be EPA's gap, not the facility's

Limits in force (8)

Parameter	Statistic	Limit	Months
pH	maximum	report only (SU)	Jul
Solids, total suspended	maximum	report only (mg/L)	Jul
Oil and grease, hexane extr method	maximum	report only (mg/L)	Jul
Nitrogen, Kjeldahl, total [as N]	maximum	report only (mg/L)	Jul
Nitrite + Nitrate total [as N]	maximum	report only (mg/L)	Jul
Phosphorus, total [as P]	maximum	report only (mg/L)	Jul
BOD, carbonaceous [5 day, 20 C]	maximum	report only (mg/L)	Jul
Chemical Oxygen Demand [COD]	maximum	report only (mg/L)	Jul

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

Same industry: the 80 Stone, Clay, Glass and Concrete Products permits in Indiana.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/INRM02231 · MCP: https://passage-data.com/mcp