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CSX Transportation, Inc.

Railroads, Line-Haul Operating, Nashville, Tennessee. NPDES permit TN0064955, in force until May 31, 2030. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form Q quarterly (8 values), outfall 01A form Q quarterly (5 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 8 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
June 2026Oil and grease, daily maximum15.7 mg/L≤ 15 mg/L5%

Limits in force (13)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
pHmaximumreport only (SU)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Oil and greasedaily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
pHdaily minimum≥ 6 SUMar, Jun, Sep, Dec01A
pHmaximum≤ 9 SUMar, Jun, Sep, Dec01A
Oil and greasedaily maximum≤ 15 mg/LMar, Jun, Sep, Dec01A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Mar, Jun, Sep, Dec01A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Mar, Jun, Sep, Dec01A

How strict are these limits?

Cited limits by parameter: Tennessee'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/TN0064955 · MCP: https://passage-data.com/mcp