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This study corresponds to the primary objective of salinity control as set forth in the Colorado River Basin Salinity Control Act (Public Law 93-320) snd is coordinated with studies of other federal, state and local agencies in the area. Salinity control contributes to the water quality improvement aspects of the Environmental Quality (EQ) objective as described in the Principles and Standards for Planning Water Resources, published by the U.S. Water Resources Council. The Act also recognizes the contribution that will be made to the Economic Development (ED) objective. By reducing salt loading, the value of the Nation's output of goods and services will be increased. Components of the EQ and ED objectives in this study are: Environmental Quality (EQ) - Improve water quality by reducing the sediment and salt load to the Colorado River and enhance fish and wild- life resources. Economic Development (ED) - Increase the efficiency of agricultural production by improved irrigation efficiency and reduced downstream sa- lini ty damages. The significant effects of the alternative plans are displayed in three accounts. These include Economic Development, Environmental Qual- ity, and Other Social Effects. See the Alternative Plans section of this report for tables displaying the effects of planned alternatives. The objective of the plannina effort ia to formulate an acceptable implementation plan of action to accomplish the program objectives. The primary focus of the plan is to reduce salt discharges to Colorado River by controllina salinity and erosion from irrigated snd other private lands. The results of this USDA study have been coordinated with USBR planning on LaVerkin Springs and the Lower Virgin River Units through tbe Interagency Salinity Control Advisory Committee. :-~ Public Involvement Process The Local Interagency Salinity Control Committee provided a forum for discussion of study findinas and proposala, coordinated study acti- vitiea snd directed the public information program. This committee was organized on July 10, 1979 in Las Vegas. Prior to organization of the committee, public meetings were held to obtain local input. Meetings were beld with USBR's Interagency Planning Team for tbeir Lower Virgin River Salinity Study. .. . Clark County Conservation District disseminated information during this study and assisted with obtaining local participation in the planning process. The agendas and minutes of the Clark County Conservation District document numerous discussions of the proposed salinity-program. Some of the major irrigators in Littlefield, Arizona reside in Mesquite, Nevada. Opportun:ity for their participation was provided by Clark County Conservation District. Other input from Arizona and Utah was provided through SCS state offices in these states. Following,is a list of agencies participating on the Local Interagency Salinity Control Committee. 2 GOl'~GS