1884 Line Co.

825 NE Multnomah St, Ste. 910

Portland, OR 97232

360-801-6047

Marcy Grail, Company Representative

marcia.grail@kiewit.com

www.1884lineco.com

Advanced Underground Utilities

PO Box 309

Sumner, WA 98390

253-988-2449

503-299-6280 Fax

Ernest J. Fernanez, Company Representative

ej@auuinc.com

http://www.auuinc.com/

Black & McDonald, Inc.

2102 E McLoughlin Blvd, Ste 100

Vancouver, WA 98661

503-457-8639

Teagen Wise, Company Representative

twise@blackandmcdonald.com

http://www.blackandmcdonald.com