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i <br />Revised 04/20/90 <br />Section 780.16(a) Continued. <br />enhance the waterfowl habitat at the Kerr Mine Area by providing a <br />greater amount of needed resting water during periods of heavy spring <br />runoff (spring migration) <br />Sage Grouse. In order to protect the value of the Raven Lek as a <br />breeding area for sage grouse, Kerr Coal will limit topsoil and <br />associated vegetation removal operations in the area adjacent to the <br />Raven Lek as much as possible between late March and the end of May. <br />In addition, unless mining requirements require otherwise, once the <br />birds from the Raven Lek have left the lek for nesting, Kerr Coal <br />will avoid any nests found on the area until the chicks have hatched <br />and departed the nest. <br />• Raptors. No supplemental measures are required to mitigate the <br />negligible impact of the proposed mining operation on raptors because <br />of the increased density of small mammals and rodents which will <br />result from not only the displacement resulting from mining, but also <br />the reconcentration of small mammals in reseeded areas after <br />reclamation. <br />• <br />Threatened and Endangered Soecies. Because no adverse impacts on <br />threatened or endangered species is anticipated, no supplemental <br />mitigation measures are necessary. <br />780-47 <br />