Transwestern Pipeline Company

Second Revised Volume No. 1

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Effective Date: 02/23/2000, Docket: RP99-481-002, Status: Effective

Substitute Ninth Revised Sheet No. 79 Substitute Ninth Revised Sheet No. 79 : Effective

Superseding: Eighth Revised Sheet No. 79

GENERAL TERMS AND CONDITIONS

(continued)

Transporter shall not be required to reduce its rates under this

Section 20 by an increment exceeding the aggregate increases allowed

hereunder.

20.3 Exclusion of Payments to GRI

Rate changes made under this Section 20 shall be calculated exclusive of

any payments made to Gas Research Institute.

21. GAS RESEARCH INSTITUTE (GRI) SURCHARGE PROVISION

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21.1 Purpose

Transporter has joined with other gas enterprises in the formation of and

participation in the activities and financing of Gas Research Institute

(GRI), an Illinois not for profit corporation. GRI has been organized for

the purpose of sponsoring Research, Development and Demonstration (RD&D)

programs in the field of natural and manufactured gas for the purpose of

assisting all segments of the gas industry in providing adequate,

reliable, safe, economic and environmentally accept able gas service for

the benefit of gas consumers and the general public.

For the purpose of funding GRI's approved expenditures, this Section 21

establishes GRI surcharge to be applicable to quantities transported

under Transporter's FTS-1, LFT, FTS-3, EFBH, FTS-2 and ITS-1 Rate

Schedules.

A GRI Demand Surcharge shall be assessed for either high load factor

shippers, i.e., pipeline shippers with load factors exceeding 50%, to be

applicable to the MAXDTQ under each Shipper's FTS-1, LFT, FTS-3 and EFBH

Service Agreements; or for low load factor shippers, i.e. pipeline

customers with load factors of 50% or less, to be applicable to the MAXDTQ

under each Shipper's FTS-1, LFT, FTS-3 and EFBH Service Agreements. Load

factors will be calculated once a year using the most current twelve month

data available at the time Transporter prepares its annual GRI filing. A

new customer's load factor will be calculated on a monthly basis, using

the latest available month's throughput until a twelve month history is

established.

A GRI Commodity Surcharge shall be assessed to all shippers under

Transporter's FTS-1, LFT, FTS-3, EFBH and ITS-1 Rate Schedules, applicable

to quantities transported under such shippers' FTS-1, LFT, FTS-3, EFBH and

ITS-1 Service Agreements. A GRI volumetric surcharge shall be assessed to

all shippers under Transporter's FTS-2 Rate Schedule, applicable to

quantities transported under such shippers' FTS-2 Service Agreements.

Such charges shall not be applicable to Shippers which are interstate

pipelines and which include in their rates a charge for RD&D by GRI.

Provided further, GRI Surcharges shall not be applied to the same quantity

of gas more than once.