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Mississippi Export Railroad

Railroads, Line-Haul Operating, Mobile, Alabama. NPDES permit AL0004022, in force until Apr 30, 2027. 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 (6 values)
Renewal application due: Nov 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file: June 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 4 reports late

Limits in force (6)

Parameter	Statistic	Limit	Months
pH	daily minimum	≥ 6 SU	all year
pH	daily maximum	≤ 8.5 SU	all year
Oil & Grease	daily maximum	≤ 15 mg/L	all year
Naphthalene	daily maximum	report only (mg/L)	all year
Surfactants [MBAS]	daily maximum	report only (mg/L)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year

How strict are these limits?

pH, daily maximum 8.5 SU — stricter than 36% of 592 other minor industrial and other permits in Alabama; 63% have the same limit

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AL0004022 · MCP: https://passage-data.com/mcp