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Arrow Specialties USA, LLC - Pontchartrain Site

Industrial Organic Chemicals, Laplace, Louisiana. NPDES permit LA0005924 expired Sep 30, 2024; its limits still apply. Last 12 months: no values over a limit, 2 of 64 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due

About 15 days after each period: outfall 002 form A monthly (1 value), outfall 002 form Q quarterly (7 values), outfall 003 form Q quarterly (6 values), outfall 004 form Q quarterly (6 values), outfall 005 form Q quarterly (6 values), outfall 006 form Q quarterly (6 values), and 6 more forms

Last report on file

September 2026

Oct 2024 – Sep 2025

0 values over a limit, 0 required values missing, 0 of 64 reports late

Limits in force (78)

How strict are these limits?

• Benzene, daily maximum 50 ug/L — stricter than 16% of 127 other minor industrial and other permits in Louisiana; 80% have the same limit
• Chlorine, total residual, daily maximum .2 mg/L — stricter than 11% of 45 other minor industrial and other permits in Louisiana; 73% have the same limit
• Lead, total [as Pb], daily maximum 50 ug/L — stricter than 11% of 117 other minor industrial and other permits in Louisiana; 88% 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.

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0005924 · MCP: https://passage-data.com/mcp