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<br />terms or their value to the user. Increaeee .in crop yields, expanding <br />recreational use, and peaking capacity for power systems are examples <br />of direct increases in the Nation's output which result from water and <br />related l...nd resources developments. Moreover, sucn developments <br />often result in a change in the productivity of natural resourl;ezs and <br />the produl;ti,vity of labor and capital used with these resources. In- <br />creased earnings from changes in land use, reduced disruption of <br />economic activity due to drougbb. flood8 and fluctuating water supplies, <br />and rcmoval of constraintB on production through increased water <br />suppliell are examples of direct increalleS in productivity Crom water <br />and land development that contribute to national output. Development <br />of water and land resources lnay rellult in increased production from <br />the emplO'fTl1ent of otherwisc unemployed or underemployed resources, <br />as well as contributions to increased output due to cost savings resulting <br />in the release of resources for employrnen,t elsewhere. <br /> <br />wilderness areas, and estuariesi <br /> <br />b. Management, preservation, or ~nhancement of especially <br />valuable ~r outstanding archeological. historical, biological (including <br />fish and wildlife habitat). and geological resources and ecological <br />systems; <br /> <br />c. Enhancement of quality aspects of water. land, and air by COn- <br />trol of pollution or prevention of erOllion a.nd relltoration of eroded areas <br />embracing .the need to harmonit.:e land use objectives in terms of pro_ <br />ductivity for economic use and development with conserva.tion of the <br />resource; <br /> <br />b. The value of output resulting from external economies. In <br />addition to the va.lue.of goods and services derived by users oC outputs <br />of a plan, there may be external gains to other individuals or groups. <br /> <br />d. Avoiding .irreversible conunitments of resources to future U6es: <br />While all forms of development and use affect and sometimes change <br />the tenuous balance of fragile aquatic and terrestrial ecosy.stem~. the <br />_implication of all possible effects and changes on such systeme ill im_ <br />perfectly understood at the present time. In the absence of absolute <br />mea/lures or standards for reliably predicting ecological change, thesc <br />planning standards enlphasit.:e the need for a cautionary approach in <br />meeting development and use objectivee in order to minimit.:e or pre_ <br />c1ud~ the poesibility of undesirable and possible irreversible changes <br />in the natural environment; <br /> <br />z. Envhonmental Qualitv. The environmental objective is enbanced <br />by the lTlanagement, conservation, preservation, creation, restoration, <br />or improvement of the quality of certain natural and cultural resources <br />and ecological systems in the area under study and claewhere in the <br />Na.tion. This objective reflects society's concern and emphasis for the <br />natural environment and its maintenance and enhancement as a source. <br />of present enjoyment and a herita8e for future generations. <br /> <br />e. Others. Given its broad and pervasive nature. it is not prac- <br />tical to specifically identify in these standards all possible components <br />oC the environmental quality objective. II other components are <br />recognized. they should be explicitly identified and accommodated in <br />the planning process, <br /> <br />Explicit recognition should be given to the desire.bility of diverting <br />a portion of the Nation's re!lources from productio~ of more conven- <br />tional Inarket-oriented goode and services in order to accomplish en- <br />vironmental objectives. As incomes and living levels increa..e, society <br />appears lese willing to accept environmental deterioration in exchange <br />for additional goods and lIervicell in the market place. <br /> <br />Respon!live to the ,"aried spiritual, psychological, recreational, <br />and material needs, the environmental objective reflects man' 8 abiding <br />concern with the quality of the natural physical-biological system in <br />which all lile ill sustained. <br /> <br />Components of tbe environmental objectiv.e include the following: <br /> <br />&. Mana.gement, protection, enhancement, or. creation of areas <br />of natural beauty and human enjoyment such as open and green space, <br />wild and scenic rivers, lakes, beache6, shores, mountain and <br /> <br />34 <br /> <br />" <br /> <br />. <br /> <br />FEDERAL REGISTER, Val. 38, NO. 174-MONDAY. SEPTEMBER 10, 1973 <br /> <br /><:;:) <br />o <br />c;;.> <br />C) <br />C') <br />en <br /> <br />z <br />o <br />.... <br />n <br />m <br />II> <br /> <br />"" <br />"" <br />.., <br />"" <br />'" <br />