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BNSF Railway Company

Industrial or other facility, Skykomish, Washington. NPDES permit WA0032123, in force until Sep 30, 2027. Last 12 months: no values over a limit, 7 of 21 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: outfall MP1 form MM quarterly (6 values), outfall MP1 form QQ quarterly (2 values), outfall MP2 form MM quarterly (1 value)
Renewal application due: Apr 3, 2027 · 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 28 reports late

Limits in force (9)

Parameter	Statistic	Limit	Months	Outfall
Oxygen, dissolved [DO]	daily minimum	≥ 9.5 mg/L	all year	MP1
pH	daily minimum	≥ 6.5 SU	all year	MP1
pH	daily maximum	≤ 8.5 SU	all year	MP1
Arsenic, total [as As]	daily maximum	report only (ug/L) (alert, not enforceable)	all year	MP1
Lead, total [as Pb]	daily maximum	report only (ug/L) (alert, not enforceable)	all year	MP1
Total Petroleum Hydrocarbons - Diesel	daily maximum	≤ 208 ug/L	all year	MP1
Flow	daily maximum	≤ 100 gal/min	all year	MP1
Oil and grease visual	daily maximum	≤ 0 N=0;Y=1	all year	MP1
Total Petroleum Hydrocarbons - Diesel	daily maximum	report only (ug/L) (alert, not enforceable)	all year	MP2

How strict are these limits?

Oxygen, dissolved [DO], daily minimum at least 9.5 mg/L — stricter than 99% of 2,912 other minor industrial and other permits nationwide
pH, daily minimum at least 6.5 SU — stricter than 74% of 78 other minor industrial and other permits in Washington; 23% have the same limit
pH, daily maximum 8.5 SU — stricter than 74% of 78 other minor industrial and other permits in Washington; 26% have the same limit

Cited limits by parameter: Washington'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/WA0032123 · MCP: https://passage-data.com/mcp