Standard Days (no SOL, SUL or Critical Day)
System Overrun Limitation (SOL)
System Underrun Limitation (SUL)
Index – The highest published Platts “Gas Daily" Midpoint price on the applicable day at any of the applicable index points of:
Market Area – Northern, demarc and Northern, Ventura ; or
Field Area – Panhandle, Tx.-Okla. and El Paso, Permian.
Refer to the charts located in the DDVC and SMS Information section on the
Training Materials webpage for examples of the Daily Delivery Variance Charges (DDVCs) structure as defined in Northern's tariff sheet No. 53.