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<br />. <br /> <br />. <br /> <br />"" <br />0') <br />I-' <br />W <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />TABLE OF CONTENTS <br /> <br />SUMMARY. . . . . . . . . . . . . . . <br /> <br />LIST OF ABBREVIATIONS USED IN,REPORT <br /> <br />Page <br />i <br /> <br />x <br /> <br />CHAPTER I. <br /> <br />INTRODUCTION . <br /> <br />1 <br /> <br />CHAPTER II. HISTORICAL ACTIONS RELATIVE TO SALINITY STANDARDS 3 <br /> <br />Water Quality Act of 1965. . . . . . . . <br /> <br />. . . . . . . . <br /> <br />3 <br /> <br />Early Sessions of the Conference in the Matter of the <br />Pollution of the Interstate Waters of the Colorado River <br />and Its Tributaries. . .. .... . .. .... 3 <br /> <br />Statements by Officials of the Department of the Interior. <br />Report of Environmental Protection Agency. . <br /> <br />5 <br />5 <br /> <br />. . . . <br /> <br />Seventh Session of the Conference in the Matter of <br />of the Interstate Waters of the Colorado River and <br />Its Tributaries. . . . . . . . . . . . . . . . <br /> <br />Pollution <br /> <br />. . . <br /> <br />6 <br /> <br />Establishment of Colorado River Basin Salinity Control Forum S <br /> <br />Recent, Activities. . . <br /> <br />10 <br /> <br />CHAPTER III. SALINITY OF THE RIVER. <br /> <br />11 <br />11 <br /> <br />Sources of Salinity. . . . <br /> <br />. . . . <br /> <br />Salinity From Natural Causes. <br />Salinity Resulting From Man's Actions <br />Past, Present and Projected Salinity Levels. <br /> <br />14 <br />15 <br />17 <br />17 <br />22 <br /> <br />Records and Basic Data. . . . . <br /> <br />Present and Historical Salinity Levels and Salt Loads <br /> <br />Salt Routing Studies. <br /> <br />. , 23 <br /> <br />Projections of Future Water Use <br /> <br />25 <br />2S <br />2S <br /> <br />Water Supply Assumptions. . <br /> <br />Projected Salt Load and Salinity Concentration. <br /> <br />Reduction in Projected Salinity Required to <br />Maintain 1972 Levels. . . . . . . . . . . . . . <br /> <br />. . . . . <br /> <br />29 <br /> <br />-iv- <br />