Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

Effective Date: 07/16/2008, Docket: RP08-411-000, Status: Effective

irst Revised Sheet No. 204A irst Revised Sheet No. 204A

Superseding: Original Sheet No. 204-A

GENERAL TERMS AND CONDITIONS

Continued)

3. QUALITY (Continued)

(4) Dust, Gums, etc.: The gas shall be commercially free from

objectionable odors (excluding odorant added to natural gas for

safety reasons or to comply with federal and/or state

regulations), solid matter, dust, gums, and gum forming

constituents, or any other substance which interferes with the

intended purpose of merchantability of the gas, or causes

interference with the proper and safe operation of the lines,

meters, regulators, or other appliances through which it may

flow.

(5) Heating Value: The total gross heating value of the gas

deliverable hereunder shall not be less than 985 Btu.

(6) Oxygen: The gas shall not contain in excess of two-tenths

of one percent by volume of oxygen, and the parties agree to

exercise every reasonable effort to keep the gas completely

free of oxygen.

(7) Temperature: The temperature of the gas at the point of

delivery shall not exceed one hundred twenty degrees

Fahrenheit.

(8) Water: The gas delivered shall be free from liquid water

and shall not contain more than seven pounds of water in vapor

phase per million cubic feet.

(9) Mercury: The gas shall be free from any detectable

mercury.

(10) Toxic or Hazardous Substance: The gas shall not contain

any toxic or hazardous substance in concentrations which, in

the normal use of the gas, may be hazardous to health,

injurious to pipeline facilities, or be a limit to

merchantability or be contrary to applicable government

standards.