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Imerys Refractory Minerals USA, Inc.

Clay And Related Minerals, Eufaula, Alabama. NPDES permit AL0059111, in force until Sep 16, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form 1 quarterly
Last report on file: June 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	≤ 8.5 SU	all year
Solids, total suspended	monthly average	≤ 20 mg/L	all year
Solids, total suspended	daily maximum	≤ 30 mg/L	all year
Iron, total [as Fe]	monthly average	≤ .5 mg/L	all year
Iron, total [as Fe]	daily maximum	≤ 1 mg/L	all year
Aluminum, total [as Al]	monthly average	≤ 1 mg/L	all year
Aluminum, total [as Al]	daily maximum	≤ 2 mg/L	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?

Solids, total suspended, monthly average 20 mg/L — stricter than 90% of 442 other minor industrial and other permits in Alabama; 8% have the same limit
Solids, total suspended, daily maximum 30 mg/L — stricter than 87% of 373 other minor industrial and other permits in Alabama; 10% have the same limit
Iron, total [as Fe], monthly average .5 mg/L — stricter than 80% of 135 other minor industrial and other permits in Alabama; 19% have the same limit

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

Same industry: the 206 Mining and Quarrying of Nonmetallic Minerals permits in Alabama.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AL0059111 · MCP: https://passage-data.com/mcp