Richfield Gas Storage System

Substitute Volume No. 1

Effective Date: 11/01/1997, Docket: RP97-150-008, Status: Effective

First Revised Sheet No. 33A First Revised Sheet No. 33A : Superseded

Superseding: Original Sheet No. 33A

(f) Month - The term "month" shall mean the period beginning

at 9:00 A.M. Central Time on the first day of a calendar

month and ending at the same hour on the first day of the

next succeeding calendar month.

(g) FERC - The term "FERC" shall mean the Federal Energy

Regulatory Commission or any federal commission, agency

or other governmental body or bodies succeeding to the

powers of such Commission.

(h) Winter Period. Winter Period redelivery shall be during

a period of October 1st through March 31st.

(i) Summer Period. Summer Period deliveries shall be during

a period of April 1st through September 30th.

(j) Contract Year. The term "Contract Year" shall mean the

period from April 1 of a calendar year through March 31

of the following calendar year.

(k) Pooling - The term "pooling" shall mean 1) the

aggregation of gas from multiple physical and/or logical

points to a single physical or logical point, and/or 2)

the dis-aggregation of gas from a single physical or

logical point to multiple physical and/or logical points.

(l) Operational Balancing Agreement - The term "Operational

Balancing Agreement" or "OBA" is a contract between two

parties which specifies the procedures to manage

operating variances at an interconnect.