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<br />m <br />:-'"l <br />ex) <br />C\J <br /> <br />workshops, speakers at three public meetings held in September <br />comments received from response forms in a CAWCS publ ication, the <br />Governor's Advisory Committee, and the Central Arizona <br />Conservation District. <br /> <br />1981, <br />CAWCS <br />~Jater <br /> <br />I (;ct?:\ <br /><:,:,j <br />I '.<,r-- <br /> <br />In October 1981, the CAWCS planning team participoted in a <br />"tradeoff" meeting to review all available information on the <br />alternatives and to formulate recommendations. Alternatives were <br />eva 1 uated based on performance, cost, economi c benefits, pub 1 i c <br />acceptebility, engineering feasibility, environmental impacts, social <br />impacts and implementability. As a result of these analyses, the <br />Arizona Projects Office of the Bureau of Reclamation recommended that <br />Plans 1, 3, and 6 were appropriate for consideration as the proposed <br />action. After reviewing the three recommended plans, the Secretary of <br />the Interior selected Plan 6 as the agency proposed action in November <br />1981, citing the plan's high performance, public support, and avoidance <br />of impacts to the Fort McDowell Tndian Community. <br /> <br />III. AFFECTED ENVIRONMENT <br /> <br />A. General Description of CAWCS Area Significant Resources <br /> <br />1. ~iological Resources <br /> <br />Six resource factors within the CAWCS area have been <br />identified as having importance with respect to action-related impacts: <br /> <br />1. Riparian/Wetland Biotic Communities <br />2. Other Terrestrial Biotic Communities <br />3. Perennial Stream/Riverine Aquatic Communities <br />4. Reservoir Aquatic Communities (Lakes and <br />Lacustrine Communities) <br />5. Threatened and Endangered Plants and Wildlife <br />6. f1anagement anc! Special Use Areas <br /> <br />Acreage and percent ranges of the major biotic <br />communities occurring in the CAWCS study area are shown in Table 3. <br /> <br />2. Water Quality <br /> <br />The water qual ity of local surface water sources in the <br />CAWCS area is measured by concentrations for 45 constituents includinq a <br />number of elements and compounds, fecal coliforms, dissolved solids, and <br />phenolics, as well as by measures of alkalinity, hardness, specific <br />conductance, and sodium absorption ratio. Safe levels of some <br />constituents are prescribed by law for various water uses; the levels of <br />water qual ity constituents in surface water sources in the CA~JCS area <br />vary considerably from season to season and from one source to another. <br />These local sources could be either improved or degraded by regulatory <br />storage mixing. <br /> <br />9 <br />