High Island Offshore System, L.L.C.

Third Revised Volume No. 1

Effective Date: 10/01/2007, Docket: RP06-540-004, Status: Effective

Third Revised Sheet No. 79 Third Revised Sheet No. 79 : Effective

Superseding: Substitute Second Revised Sheet No. 79

GENERAL TERMS AND CONDITIONS

(Continued)

3.6(a) By use of Burnett type apparatus. Such determination shall be

made within 60 days of commencement of service under Rate

Schedules FT-1, FT-2, and IT and annually thereafter.

3.6(b) Or, if agreeable to Shipper, by use of the tables or formulas

published in the applicable American Gas Association Report

referred to in Section 3.6. Determinations of the molecular

percentage of nitrogen and carbon dioxide in the Gas will be made

within 30 days of commencement of deliveries under Rate Schedules

FT-1, FT-2, and IT and at least quarterly thereafter. The

molecular percentage of nitrogen and carbon dioxide thus

determined will be used to determine the supercompressibility

factors during the ensuing period with corrections for specific

gravity, temperature and pressure.

3.7 Measuring Equipment. Unless otherwise agreed upon, Shipper will cause to

be provided, maintained, and operated necessary offshore platforms and

measuring and regulating stations equipped with flow meters, continuous

gas sampler and other necessary measuring equipment by which its volumes

of gas delivered to HIOS hereunder shall be determined. Unless otherwise

agreed upon, HIOS shall cause to be installed, operated and maintained at

its expense a measuring and regulating station or stations equipped with

flow meters, gas analyzer and other necessary measuring equipment for the

measurement of gas redelivered to or for the account of Shipper; such

measuring and regulating stations shall be so installed at the northern

terminus of the System or one shall be installed at each of two mutually

agreeable points onshore in the vicinity of Johnson's Bayou and Lower Mud

Lake, Louisiana to provide measurement on a compatible basis. All flow,

measuring, testing, and related equipment shall be of standard

manufacture and type approved by HIOS, and the size, type, and

specifications of such