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~~ a <br />~~ <br />D <br />Golder Associates <br />CONSULTING GEOTECHNIGL MID MINING ENGINEERS <br />June 24, 1985 <br />Northwest Pipeline Corporation <br />Post Office Box 1526 <br />Salt Lalce City, Utah 84110 <br />Our ref: 853-2038 <br />Attention: tdr. Larry Poulson <br />Risk t+lanager <br />RE: REPORT, LANDSLIDE INSPECTION, EAST HAWK 6IINE <br />SOMERSET, COLORADO <br />Gentlemen: <br />INTRODUCTION <br />Recent slope deformations at the East lIawk tdine surface facili- <br />ties have resulted in substantial damage to a switching shed, <br />power poles, and the conveyor portal. Since local personnel do <br />not have adequate experience in the evaluation and stabilization <br />of landslides, Northwest Pipeline requested Golder Associates to <br />inspect the site. The purpose of this inspection was to identify <br />the nature and extent of existing ground movements, to recommend <br />short-term mitigation measures for minimizing damage to the mine <br />facilities, and to recommend a program to permanently stabilize <br />the landslides in the area of the portals and surface facilities, <br />if necessary. <br />SITE CONDITIONS <br />The area of the surface facilities at the East Hawk Mine was <br />inspected on tday 30, 1985. Although detailed mapping was not <br />GOLDER ASSOCIATES. INC. • I)J01 W LDLFA%AVENUE SUITE 2)5 GOLDEN IDENVERI. COLORADO BWO1 U 5 A. • TELEPHONE ~JWI P)B~B66Q <br /> <br />OFFICES IN LANApA ~ UNITED STATES • UNITED KINGDOM • AUSTRALIA <br />