Price Index Reference

SYMBOL	SHORT NAME	NAME	REGION	PUBLISHER
IGBDX21	GD-MP-CHIC-CG	Chicago City Gate	Citygates	Platts
IGBBP21	GD-MP-TENN-500	Tenn LA 500 Leg	Louisiana-Onshore South	Platts
IGBCW03	IF-EMERSON-VIK	Chicago Citygates - MW		iFERC

The subscription to each index renews on an annual basis and will continue until further notice. In the event a price is not published for a specific point and the index-based formula cannot be computed, the pipeline company will invoice the release according to NAESB 5.2.5.