4. Minimum elevation variations [ 10]. 5. Maximum Federal land use [ 11]. These criteria are evaluated to differing degrees of accuracy in this preliminary site selection survey due to the use of general reference material. For example, the readily available references in the area of transportation yield a good evaluation of these impacts. Similarly, the reference material on land usages and Federal land locations allows a fairly good evaluation. However, the references on elevation variation and population distributions only give an approximate evaluation of the impacts. Therefore, the following comments on rectenna locations give only average elevation variation ranges, and often these ranges are too broad to have much meaning. These numbers will be refined in the next phase of the study using topographical maps of the areas in which the rectennas are located. Similarly, the preliminary population displacement assessment uses average county population densities. However, since rectennas are usually located in areas of minimum county population density (away from cities and towns), the actual number of persons displaced should be much less than the estimate given. Better estimates of these displacements will be determined in the next phase of the study using actual county population distributions from state census databooks. B. Comments on Each Region The following discussion is broken into nine parts based on the nine U.S. geographic regions identified in the Statistical Abstract of the United States (Fig. 2). Regional data along with statistics on the rectenna land sites are given in each part. The Northeast region of the country includes Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, and Connecticut. These states contain 6 percent of the U.S. population on 2 percent of the land. Furthermore, 80 percent of the region's population is concentrated in the tiny states of Massachusetts, Rhode Island, and Connecticut; consequently, no land rectennas could be located in these states, but there is potential for sea sites off their coastlines. The remaining states are fairly mountainous, but one rectenna site is identified in the state of Vermont and two each in the states of Maine and New Hampshire. However, one New Hampshire site covers two small towns. These five rectennas displace a maximum of 0.2 percent of the Northeast region's population or 27 000 persons and average 40 miles to an existing power tie. The average elevation range in the area covered by rectennas is 800 to 2200 ft with
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