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Air Products & Chemicals Inc - Plaquemine Hydrogen Purification Plant

Industrial Gases, Addis, Louisiana. NPDES permit LA0063860, in force until Nov 30, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form Q quarterly (10 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 4 reports late

Limits in force (10)

Parameter	Statistic	Limit	Months
pH	instantaneous minimum	≥ 6 SU	all year
pH	instantaneous 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 & Grease	monthly average	≤ 10 mg/L	all year
Oil & Grease	daily maximum	≤ 15 mg/L	all year
Carbon, tot organic [TOC]	daily maximum	≤ 50 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
Chlorine, total residual	daily maximum	≤ 1 mg/L	all year

How strict are these limits?

Oil & Grease, monthly average 10 mg/L — stricter than 75% of 40 other minor industrial and other permits in Louisiana; 18% have the same limit
Solids, total suspended, daily maximum 45 mg/L — stricter than 18% of 551 other minor industrial and other permits in Louisiana; 59% have the same limit

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

Same industry: the 130 Chemicals and Allied Products permits in Louisiana.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0063860 · MCP: https://passage-data.com/mcp