DAQ-2024-007238

EcoLogic Environmental Consultants, LLC
864 Windsor Court
Santa Barbara, CA 93111
805-964-7597

March 26, 2024

Bryce C. Bird, Director
Utah Department of Environmental Quality
Division of Air Quality
195 North 1950 West
Salt Lake City, UT 84116

Subject: Documentation of Status of Construction
Cisco Compressor Station

Attention: NSR Section

On behalf of Northwest Pipeline LLC, EcoLogic Environmental Consultants, LLC is submitting
documentation of the status of construction of three oil storage tanks at the Cisco Compressor
Station in accordance with Condition I.8 of Approval Order DAQE-AN102590004-23. The three
oil storage tanks were constructed at the Cisco Compressor Station in the early 1990s.

If you have any questions, please contact me at [phone] or by email at
[e-mail].

Sincerely,

EcoLogic Environmental Consultants, LLC
Walter H. Konkel III
Principal