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Howard Materials LLC

Asphalt Paving Mixtures And Blocks, Indianapolis, Indiana. NPDES permit INRM03174, in force until Apr 21, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Last report on file
April 2026

Limits in force (8)

ParameterStatisticLimitMonths
pHmaximumreport only (SU) (alert, not enforceable)Apr
Solids, total suspendedmaximumreport only (mg/L) (alert, not enforceable)Apr
Oil and grease, hexane extr methodmaximumreport only (mg/L) (alert, not enforceable)Apr
Nitrogen, Kjeldahl, total [as N]maximumreport only (mg/L) (alert, not enforceable)Apr
Nitrite + Nitrate total [as N]maximumreport only (mg/L) (alert, not enforceable)Apr
Phosphorus, total [as P]maximumreport only (mg/L) (alert, not enforceable)Apr
BOD, carbonaceous [5 day, 20 C]maximumreport only (mg/L) (alert, not enforceable)Apr
Chemical Oxygen Demand [COD]maximumreport only (mg/L) (alert, not enforceable)Apr

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

Same industry: the 41 Petroleum Refining and Related Industries 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/INRM03174 · MCP: https://passage-data.com/mcp