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Norfolk Southern Railway Co - Elkhart Yard

Railroads, Line-Haul Operating, Elkhart, Indiana. NPDES permit IN0050717, in force until Jul 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (18 values), outfall 003 form SS twice a year
Renewal application due
Feb 1, 2027 · 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, 0 required values missing, 1 of 14 reports late

Limits in force (50)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendeddaily maximum≤ 20 mg/Lall year001
Oil and grease, hexane extr methodmonthly average≤ 10 mg/Lall year001
Oil and grease, hexane extr methoddaily maximum≤ 15 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 2.2 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 3.4 mg/LMay–Nov001
Nitrogen, ammonia total [as N]daily maximum≤ 3.6 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 8.8 lb/dMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 9.2 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 14.2 lb/dMay–Nov001
Nitrogen, ammonia total [as N]daily maximum≤ 15 lb/dJan, Feb, Mar, Apr, Dec001
Copper, total recoverablemonthly average≤ 24 ug/Lall year001
Copper, total recoverabledaily maximum≤ 39 ug/Lall year001
Copper, total recoverablemonthly average≤ .1 lb/dall year001
Copper, total recoverabledaily maximum≤ .16 lb/dall year001
Naphthalenemonthly averagereport only (mg/L)all year001
Naphthalenedaily 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
Mercury, total recoverablemonthly average≤ 1.3 ng/LFeb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverableannual average≤ 18.8 ng/LFeb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximum≤ 3.2 ng/LFeb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximumreport only (ng/L)Feb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverablemonthly average≤ .0000054 lb/dFeb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximum≤ .000013 lb/dFeb, Apr, Jun, Aug, Oct, Dec001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
pHdaily maximumreport only (SU)Jun, Dec003
pHdaily maximumreport only (SU)Jun, Dec003
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec003
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec003
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec003
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec003
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Jun, Dec003
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Jun, Dec003
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Jun, Dec003
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Jun, Dec003
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec003
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec003
Chloride [as Cl]daily maximumreport only (mg/L)Jun, Dec003
Chloride [as Cl]daily maximumreport only (mg/L)Jun, Dec003
Naphthalenedaily maximumreport only (ug/L)Jun, Dec003
Naphthalenedaily maximumreport only (ug/L)Jun, Dec003
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Jun, Dec003
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Jun, Dec003
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)Jun, Dec003
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)Jun, Dec003
Storm water flowdaily maximumreport only (MGD)all year003
Storm water flowdaily maximumreport only (MGD)all year003

How strict are these limits?

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

Same industry: the 18 Railroad Transportation permits in Indiana.

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/IN0050717 · MCP: https://passage-data.com/mcp