GENERAL TERMS AND CONDITIONS
                                  (Continued)
   
            anhydrous Gas at a temperature of sixty degrees (60) Fahrenheit
            and an absolute pressure of 14.73 psia, dry.
   
      7.2   Freedom from Objectionable Matter.  The Gas injected and
            withdrawn hereunder:
   
            (a)  shall be commercially free from dust or other solid or
                 liquid matter which might interfere with its
                 merchantability or cause injury to or interference with
                 proper operation of the lines, regulators, meters and other
                 equipment of Seller;
   
            (b)  shall not contain more than one quarter (.25) grain of
                 hydrogen sulfide per one hundred (100) cubic feet of Gas,
                 as determined by methods prescribed in Standards of Gas
                 Service, Circular of the National Bureau of Standards, No.
                 405, page 134 (1934 edition), and shall be considered free
                 from hydrogen sulfide (H2S) if a strip of white filter
                 paper, moistened with a solution containing five percent
                 (5%) by weight of lead acetate, is not distinctly darker
                 than a second paper freshly moistened with the same
                 solution, after the first paper has been exposed to the Gas
                 for one and one-half (1-1/2) minutes in an apparatus of
                 approved form, through which the Gas is flowing at the rate
                 of approximately five (5) cubic feet per hour, the Gas from
                 the jet not impinging directly upon the test paper; or the
                 H2S content may be determined by an instrument of approved
                 type and by approved methods agreeable to the parties;
   
            (c)  shall not contain more than twenty (20) grains of total
                 sulfur (including the sulfur in any hydrogen sulfide and
                 mercaptans) per one hundred (100) cubic feet of Gas;
   
            (d)  shall not at any time have an oxygen content in excess
                 of one percent (1%) by volume and the parties hereto
                 shall make every reasonable effort to keep the Gas free
                 of oxygen;
   
            (e)  shall not contain as nearly as practicable any free water
                 nor contain more than four (4) pounds of water vapor per
                 million cubic feet of Gas;
   
            (f)  shall not contain more than two percent (2%) by volume of
                 carbon dioxide;