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CSX Transportation, Inc.- Avon Yard

Switching And Terminal Services, Avon, Indiana. NPDES permit IN0041815, in force until Nov 30, 2026. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form A monthly (9 values)
Renewal application due: Jun 3, 2026 · 180 days before expiry; your permit may set another date
Last report on file: August 2026
Oct 2024 – Sep 2025: 2 values over a limit, 9 required values missing, 0 of 12 reports late

Limits in force (9)

Parameter	Statistic	Limit	Months
pH	daily minimum	≥ 6 SU	all year
pH	daily maximum	≤ 9 SU	all year
Solids, total suspended	monthly average	≤ 20 mg/L	all year
Solids, total suspended	daily maximum	≤ 39 mg/L	all year
Oil and grease, hexane extr method	daily maximum	≤ 15 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
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 15 mg/L	all year
Flow, total	monthly total	report only (Mgal/mo)	all year

How strict are these limits?

BOD, carbonaceous [5 day, 20 C], daily maximum 15 mg/L — stricter than 85% of 28 other minor industrial and other permits in Indiana; 14% have the same limit
Solids, total suspended, daily maximum 39 mg/L — stricter than 80% of 259 other minor industrial and other permits in Indiana
Solids, total suspended, monthly average 20 mg/L — stricter than 30% of 428 other minor industrial and other permits in Indiana; 26% have the same limit

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

Same industry: the 18 Railroad Transportation permits in Indiana.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0041815 · MCP: https://passage-data.com/mcp