Dominion Cove Point LNG, LP

Original Volume No. 1

 Contents / Previous / Next / Main Tariff Index

Effective Date: 08/18/2003, Docket: RP01-217-003, Status: Effective

Second Revised Sheet No. 233 Second Revised Sheet No. 233 : Effective

Superseding: First Revised Sheet No. 233

GENERAL TERMS AND CONDITIONS

(Continued)

8. NATURAL GAS QUALITY (Continued)

(i) (xii) All instruments and gauges used for computing the LNG unloaded shall be

calibrated in the following manner:

(1) in cubic meters (m3);

(2) in degrees centigrade( C); and

(3) on a dual scale calibrated in bars or millibars on one side and psig on

the other.

(j) Natural Gas Interchangeability Indices

These indices were adopted as part of a Stipulation and Agreement between Operator,

Washington Gas Light Company, and the LTD-1 Shippers (BP Energy Company, Shell NA LNG,

Inc., and El Paso Merchant Energy, L.P.) that was approved by Commission order of

February 27, 2003. The interchangeability indices only apply to vaporized LNG in its

gaseous state that will be re-delivered as Natural Gas by Operator to Washington Gas

Light Company's delivery points on the Cove Point pipeline.

(i) Calculation of interchangeability will occur at the interconnection of the Cove

Point LNG Plant and the Cove Point Pipeline.

(ii) Natural Gas delivered from the Cove Point LNG Plant into the Cove Point

pipeline shall be considered to be interchangeable with domestic Natural Gas if

on average during a day the gas delivered from the Cove Point LNG Plant into

the Cove Point pipeline meets the following criteria:

Weaver Lifting Index Limit Greater than or equal to 1.000

Weaver Yellow Tipping Index Limit Less than or equal to 0.119

Weaver Incomplete Combustion Index Limit Less than or equal to 0.030

Notwithstanding the foregoing, such interchangeability indices shall not apply

if no vaporization is occurring at the Cove Point LNG Plant and the only

deliveries that are being made from the Cove Point LNG Plant into the Cove

Point Pipeline is Boil-Off.

Composition will be monitored hourly. Operator agrees to respond to remedy

deviations from these standards within three hours.

(iii) The adjustment gas used for the derivation of the above indices is composed as

follows:

Mole %

Methane 95.20

Ethane 2.81

Propane 0.44

Iso Butane 0.07

Normal Butane 0.08

Iso Pentane 0.06

Normal Pentane 0.05

Nitrogen 0.53

Carbon Dioxide 0.76

HHV (BTU/scf) 1036

Specific Gravity 0.5866

(iv) The index values for a specific LNG will be calculated using the equations in

Section 8(j)(v).