BNSF Railway Company

NPDES permit WA0032123 · Minor NON-POTW · effective, expires 2027-09-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit

0required values missing, on 0 form(s)

7of 24 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Outfall MP1, form MM (DMR (Monthly)): every 3 month(s), 6 values
Outfall MP2, form MM (DMR (Monthly)): every 3 month(s), 1 values
Outfall MP1, form QQ (DMR (Quarterly)): files for periods ending in Mar, Jun, Sep, Dec

Limits in force (9)

Outfall	Parameter	Statistic	Limit	Months
MP1	Oxygen, dissolved [DO]	DAILY MN	>= 9.5 mg/L	all year
MP1	pH	DAILY MN	>= 6.5 SU	all year
MP1	pH	DAILY MX	<= 8.5 SU	all year
MP1	Arsenic, total [as As]	DAILY MX	report only (alert)	all year
MP1	Lead, total [as Pb]	DAILY MX	report only (alert)	all year
MP1	Total Petroleum Hydrocarbons - Diesel	DAILY MX	<= 208 ug/L	all year
MP1	Flow	DAILY MX	<= 100 gal/min	all year
MP1	Oil and grease visual	DAILY MX	<= 0 N=0;Y=1	all year
MP2	Total Petroleum Hydrocarbons - Diesel	DAILY MX	report only (alert)	all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states