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                  and withdrawn hereunder: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;