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LJ <br /> <br />g(~i <br />iii iiiiiiiiiiiii iii <br />Doc Date:12/11/2001 <br />SECTION 3.0 Drainage Reconstruction, Improvement and <br />Repairs at Trapper Mine in 1998. <br />3.1 Drainage Reconstruction 1987-98 <br />At Trapper Mine, all or portions of five major drainageways (Coyote, Johnson, Buzzard, No-Name and <br />Pyeatt) and their tributaries have been regraded and appropriately treated to reduce the erosion rate <br />and assist in permanent channel stabilization from 7987 through 1998. At the conclusion of the 1998 <br />field season, appro>amatey 67,170 linear feet (12.72 miles) of permanent drainage rewnsWdion had <br />been completed at Trapper Mine (see Map(s) 3). In 1998 there was 10,320 linear feet of permanent <br />drainage reconstrodion completed. Rock strudures were installed at an average frequenq of every <br />100 feet throughout the reconstroded Pyeatt and No-Name drainages in 1998. Brush hauled from the <br />topsoil pre-strip area was used in fortifying the drainage areas between the rock strudures. <br />3.2 Drainage Improvements and Repairs <br />Drainage improvements and repairs were perfonrred to provide benefits to all drainage's treated in <br />1987-1998, as well as portions of undisturbed and disturbed drainage segments. Drainage <br />improvements include dozer basins constroded in newly stripped topsoil areas and on newly regraded <br />spoils. Drainage repair and enhancemerd was completed on approbmately 26,900 linear feet of East <br />Pyeatt, West Pyeatt, Johnson, No-Name, East Buzzard, Oak and Coyote drainageways during the <br />1998 field season. <br />~~ <br />r~ <br /> <br />