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Koppers Sherman Abetong Partnership

Concrete Products, Portsmouth, Ohio. NPDES permit OH0104248, in force until Oct 31, 2028. Last 12 months: over a limit once (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 20 days after each period: form A monthly (10 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 2 values over a limit, 0 required values missing, 0 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Parameter	Reported	Limit	Over by
April 2026	Solids, total suspended, monthly average	30.5	≤ 30 mg/L	2%

Limits in force (10)

Parameter	Statistic	Limit	Months
pH	daily minimum	≥ 6.5 SU	all year
pH	daily maximum	≤ 9 SU	all year
Solids, total suspended	monthly average	≤ 30 mg/L	all year
Solids, total suspended	daily maximum	≤ 45 mg/L	all year
Oil and grease, hexane extr method	monthly average	≤ 10 mg/L	all year
Oil and grease, hexane extr method	daily maximum	≤ 10 mg/L	all year
Turbidity [severity]	monthly average	report only (severity)	all year
Turbidity [severity]	daily maximum	report only (severity)	all year
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year

How strict are these limits?

Oil and grease, hexane extr method, monthly average 10 mg/L — stricter than 42% of 42 other minor industrial and other permits in Ohio; 33% have the same limit
Solids, total suspended, daily maximum 45 mg/L — stricter than 16% of 559 other minor industrial and other permits in Ohio; 66% have the same limit

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

Same industry: the 36 Stone, Clay, Glass and Concrete Products permits in Ohio.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OH0104248 · MCP: https://passage-data.com/mcp