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CSX Transportation, Inc.

Railroads, Line-Haul Operating, Waterville, Maine. NPDES permit ME0036803, in force until Mar 31, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form A monthly (7 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 3 values over a limit, 0 required values missing, 1 of 12 reports late

Limits in force (7)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	daily maximum	≤ 50 mg/L	all year
Oil and grease, hexane extr method	daily maximum	≤ 15 mg/L	all year
Flow, in conduit or thru treatment plant	daily maximum	≤ .144 MGD	all year
Mercury, total [as Hg]	average	≤ 39.6 ng/L	all year
Mercury, total [as Hg]	daily maximum	≤ 59.5 ng/L	all year

How strict are these limits?

Solids, total suspended, daily maximum 50 mg/L — stricter than 29% of 92 other minor industrial and other permits in Maine; 50% have the same limit
Mercury, total [as Hg], daily maximum 59.5 ng/L — stricter than 20% of 48 other minor industrial and other permits nationwide
Oil and grease, hexane extr method, daily maximum 15 mg/L — stricter than 11% of 621 other minor industrial and other permits nationwide; 28% have the same limit

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/ME0036803 · MCP: https://passage-data.com/mcp