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Phillips 66 Company

Industrial or other facility, Burien, Washington. NPDES permit WA0991035 expired Oct 31, 2025; its terms still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form MM monthly (10 values)
Last report on file: October 2025
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (10)

Parameter	Statistic	Limit	Months
pH	daily minimum	≥ 6 SU	all year
pH	daily maximum	≤ 9 SU	all year
Lead, total [as Pb]	daily maximum	≤ 1.4 ug/L	all year
Benzene, ethylbenzene, toluene, xylene combination	daily maximum	≤ 100 ug/L	all year
Benzene	daily maximum	≤ 2 ug/L	all year
Vinyl chloride	daily maximum	report only (ug/L) (alert, not enforceable)	all year
Total Petroleum Hydrocarbons - Diesel	daily maximum	≤ 5 mg/L	all year
Total Petroleum Hydrocarbons - Gasoline	daily maximum	≤ 1 mg/L	all year
Flow	daily maximum	≤ 14400 gal/d	all year
Trichloroethene	daily maximum	report only (ug/L) (alert, not enforceable)	all year

How strict are these limits?

Lead, total [as Pb], daily maximum 1.4 ug/L — stricter than 96% of 277 other minor industrial and other permits nationwide
Benzene, daily maximum 2 ug/L — stricter than 91% of 336 other minor industrial and other permits nationwide; 1% have the same limit
Benzene, ethylbenzene, toluene, xylene combination, daily maximum 100 ug/L — stricter than 21% of 38 other minor industrial and other permits nationwide; 39% 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/WA0991035 · MCP: https://passage-data.com/mcp