Sea Robin Pipeline Company

First Revised Volume No. 1

Effective Date: 08/01/1999, Docket: RP99-374-000, Status: Effective

Second Revised Sheet No. 20 Second Revised Sheet No. 20 : Superseded

Superseding: First Revised Sheet No. 20

GENERAL TERMS AND CONDITIONS

(Continued)

2.4(b)(i) (continued)

day of transportation service based on one of the following

methods:

(A) Percentage PDA; or

(B) Pro Rata PDA; or

(D) Swing PDA; or

(E) Any other mutually agreeable allocation methodology.

(ii) a ranking by each working interest owner of the various

Agreements supplied by said owner's share of gas production

at the Receipt Point for each following day of transportation

service. The working interest owner shall rank the

Agreements to receive its gas supplies based on one of the

following methods:

(A) Pro Rata PDA, or

(B) Ranked PDA.

Rankings shall include the contract number assigned by

Transporter to each Agreement and the name of the Shipper

thereunder. In the event the gas received by Transporter at a Receipt

Point is from more than one production source, the operator

of the facilities immediately upstream of the Receipt Point

shall provide an allocation of the gas it will deliver to

the Receipt Point from each production source pursuant to

one of the methods under Section 2.4(b) (i) (A-D) above.

The operators of each production source and the working

interest owners of each production source shall then provide

COMPANY allocations of their gas pursuant to Section 2.4(b) (i)

and Section 2.4 (b) (ii) above, respectively. The PDA shall

be provided by each party under this Section for each line item

nomination provided by Transporter for confirmation. Transporter

shall then use the predetermined priority provided by SHIPPER in its

nomination for applying the PDA to the Package ID level within

the line item nomination level.

The predetermined allocation statement for Receipt Point/s

interconnecting with third-party transporters shall be provided by the

third-party transporter and shall rank the various Agreements to be

supplied at the Receipt Point in accordance with one of the

methodologies enumerated in