Event detail icon
Comment Period

Draft State Waste Discharge permit renewal and fact sheet

Tesoro Logistics Operations LLC

Sept. 23, 2026, 12:01 a.m. - Oct. 23, 2026, 11:59 p.m. PT

We invite you to review and comment on the draft State Waste Discharge Permit No. ST0045528 renewal and fact sheet for Tesoro Logistics Operations LLC (Skagit County).

The draft permit is part of a routine renewal that authorizes the discharge of wastewater and stormwater from Tesoro Logistics Operations LLC (TLO) to the Tesoro Anacortes Refinery, where it will be treated at the refinery wastewater treatment plant.

Requesting a hearing

You may request a public hearing to ask questions and submit verbal comments. To request a hearing, contact Tara Roberts, Industrial Section, P.O. Box 47600, Olympia, WA 98504-7600, tara.roberts@ecy.wa.gov. If we determine there is significant public interest during this comment period to hold a hearing, we will extend the comment period to allow at least 30 days notice of the hearing and publish the time, date and location. When the comment period ends, we will review all comments received and making a final decision on the permit.

What happens next

When the comment period ends, we will review the comments received and make a final decision on issuing the permit.

Background

TLO owns and operates the Tesoro Anacortes Terminal, a crude oil and light products bulk storage loading/off-loading facility co-located with the Tesoro Anacortes Refinery. TLO is comprised of the Crude Railcar Off-Loading Facility, Light Products Truck/Rail Loading Facility, Marine Crude Storage Terminal, Refinery Products Storage Facility, and Wharf Facility.

The proposed permit clarifies and distinguishes the different discharge locations from TLO to the refinery. The proposed permit includes requirements to monitor the wastewater flow from each TLO facility and oil and grease from the Crude Railcar Off-Loading Facility. It requires a once per permit cycle requirement to characterize the wastewater and stormwater discharge. It also requires TLO to submit an updated spill plan and an operations and maintenance manual.

Comment online icon

Comment online

Comment by mail icon

Comment by mail

Sarah Penfield
WA State Dept of Ecology, Industrial Section
PO Box 47600
Olympia, WA 98504-7600
Questions icon

Questions

Sarah Penfield
Permit Writer
sarah.penfield@ecy.wa.gov
360-280-2325

To request ADA accommodation, contact Ecology's ADA Coordinator by email at ecyadacoordinator@ecy.wa.gov, or call 360-407-6831, 711 (relay service), or 877-833-6341 (TTY). More about our accessibility services.