ProLiance Energy, LLC (Marketing Affiliate of Liberty Gas Storage LLC)
111 Monument Circle, Ste. 2200
Indianapolis, IN 46204

Sempra Rockies Marketing LLC (Marketing Affiliate of Rockies Express Pipeline LLC)
101 Ash St.
San Diego, CA 92101

Sempra Energy Trading LLC (Marketing Affiliate of Rockies Express Pipeline LLC and Liberty Gas Storage LLC)
58 Commerce Road
Stamford, CT 06902