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<br />TABLE OF CONTENTS (Continued) <br /> <br />Page <br /> <br />Irrigation Management Services 27 <br />Onfarm Improvements 2B <br />Effect on Salt Discharge 28 <br />Effect at Imperial Dam 30 <br />Cos ts 30 <br /> <br />Lateral Lining 31 <br /> <br />Features 31 <br />Effect on Salt Discharge 32 <br />Effect at Imperi a 1 Dam . 32 <br />Costs . . . . . . . . . 32 <br /> <br />Irrigation Efficiency Improvement and Lateral Lining 32 <br />Accelerated Leaching 32 <br /> <br />Criteria. . . . 33 <br />Methods . . . . 33 <br />Effect on Salt Discharge 34 <br />Effect at Imperial Dam 34 <br />Costs 34 <br /> <br />Tile Drain System. . . 35 <br />No Action . . . . . . . 35 <br />Comparison of Measures 35 <br /> <br />DISCUSSION OF PALO VERDE UNIT 36 <br /> <br />LIST OF TABLES <br /> <br />No. <br /> <br />Page <br /> <br />1 Initial Effects of Various Activities on Colorado <br />River Sal inity . . . . . . . . . . . . . . . . ., 25 <br /> <br />2 Excess Salt Reaching the Colorado River Initially <br />With Various Activities . . . . . . . 26 <br /> <br />3 <br /> <br />Comparison of Salinity Control Measures for <br />Palo Verde Subarea. . . . . . . . . . . <br /> <br />37 <br /> <br />002837 <br /> <br />ii <br />