Distrigas of Massachusetts Corporation

First Revised Volume No. 1

Effective Date: 12/17/1988, Docket: GT94- 26-000, Status: Effective

First Revised Sheet No. 38 First Revised Sheet No. 38 : Superseded

Superseding: ORIGINAL SHEET NO. 38

dry gas basis, and multiplied by the standard cubic feet of

vaporized LNG and/or Boil-Off gas, respectively, to Buyer on

each such day or on the basis of other equally accurate

industry accepted methods.

2.3 Determination of Gross Heating Value of Liquid LNG

Seller shall obtain at least one sample of LNG

each day delivery is made to any Buyer. The composition of

each sample shall be determined by Seller by chromatographic

analysis, and the BTU's per pound of LNG for each sample

calculated by reference to the table below:

Gross Heating

Molecular Weight Value

Component (Lb/Lbmol) TU/pound)

Methane 16.042 23885.11

Ethane 30.068 22323.40

Propane 44.094 21663.58

Isobutane 58.120 21237.06

Normal Butane 58.120 21298.97

Nitrogen 28.016 0.00

The BTU's per pound of LNG shall be determined each

day LNG is delivered to any Buyer or for any Buyer's account

and shall be the weighted average of all samples taken that day

from LNG flowing from each tank. If a sample or the results

thereof are determined to be unsatisfactory in the reasonable

judgment of Seller, the results of that sample will not be

averaged in. Should such sample be the only sample taken that

day, or if samples should not be taken for any reason, then

the average BTU's per pound for that day shall be the most

recent daily heating value reasonably satisfactory to Seller.