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<br />G I~' r ') ":l <br />U !L L' .1 <br /> <br />Coal Desulfurization <br /> <br />A review of literature and studies on desulfurization of coal indi- <br /> <br />cates that no feasible process has been perfected, even on high-sulfur <br /> <br />coal. No information is available on low-sulfur coal desulfurization <br /> <br />research. DREW, in its report, "Report on Control Techniques for Sulfur <br /> <br />Oxide Air Pollutant s," states that, "Because the degree to which a par- <br /> <br />ticular coal can be cleaned varies widely and depends on the amount and <br /> <br />distribution of the pyrite sulfur in the coal, quantitative statements <br /> <br />about coal cleanability, its cost, and the amount of cleanable coal avail- <br /> <br />able cannot be made." <br /> <br />It appears that development of a feasible desulfurization process is <br /> <br />too far in the future for initial consideration on the Huntington Canyon <br /> <br />Plant. <br /> <br />Nitrogen Oxide Removal <br /> <br />The Power Company reports that boilers utilizing a tangential fir- <br /> <br />ing pattern will be installed. This type of boiler has proved beneficial <br /> <br />in reducing NOx formation. The Company has also authorized installation <br /> <br />of overfire airports in the boiler design, a device that also looks prom. <br /> <br />ising in the reduction of NOx' A study of methods of further reducing <br /> <br />NOx in the stack effluent is underway by the Company and its consultants. <br /> <br />Air Quality Requirements <br /> <br />1. Contractual requirements. The contract among the Emery Water Con- <br /> <br />servancy District, the United states, and Utah Power & Light Company <br /> <br />for the sale of the use of water will require the Company to: <br /> <br />(a) Install equipment designed to remove substantially all <br /> <br />20 <br />