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<br /> 1. <br /> 2. <br /> 3. <br /> 4. <br /> 5. <br /> 6. <br /> 7. <br />~ 8. <br /> 9. <br /> 10. <br /> 11. <br /> 12. <br /> 13. <br /> 14. <br /> 15. <br /> <br />PART III <br />Chapter 9 <br /> <br />Page <br /> <br />IMPLEMENTATION. . . . . , . . . . . , .. . , , . . , , . . . , . . , . . . . , , . 75 <br />IMPLEMENTATION OF THE COLORADO LANDSLIDE <br />HAZARD MITIGATION PLAN . . . . . . , , . . , . . , . . , , , . . . . . , . . . 77 <br />General Strategies. . . . . . . . , . . . . . , . . . , . . . . . . , . . , . . , . . . . 77 <br />Strategy Implementation . . . .. .. . . .. , , .. .. .. . . .. , .. , . . .. 77 <br />Critical Action Projects. . . , . , . , , . . , . . . , . , , . . . . . . . . . . 77 <br />Secondary Action Projects .. .. .. . . .. . . .. . . .. . .. , . . .. 78 <br />Follow-upProjects ..........,....,......,.....,... 78 <br />Creation of Future Projects .. . .. .. . . . .. .. . .. .. , . , .. , .. .. 78 <br />Suggested Projects. . .. . . . .. . . . . . .. . , , . , . .. . . .. . .. . . , . . 78 <br />Critical Action Projects. .. . .. , .. . .. .. . , , . . , . .. .. .. , . 78 <br />Secondary Action Projects .. . . . .. , , . .. .. . . . . . .. , . , .. 84 <br />Follow-up Projects ,..........,.......,. . , . . . . . , . . . 87 <br /> <br />GLOSSARy........ ..,....,. ......"",......',... ,... 93 <br /> <br />BffiLIOGRAPHY . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . , , . . . . 97 <br />APPENDICES. . . . . , . . . . . . . . . . . . , , , . , . , . . . , . . . . . . . . . . . 101 <br />1. Methods of Landslide Evaluation and Analysis,. . ,... , ., 101 <br />2. Non-physical Mitigation Techniques .....,.."..... ,. . 105 <br />3. Physical Mitigation Methods ........................ 121 <br />4. Agencies With Landslide Hazard Responsibilities and Existing <br />Plans and Programs ........... . .. .. .. .. .. .. , .. .. .. 129 <br />5. Three Cas~ Histories of Landsliding in Colorado. . . . . . . . 135 <br /> <br />FIGURES <br /> <br />Page <br /> <br />Generalized map showing the relative potential for landsliding in Colorado and the sur- .. <br /> <br />rounding states. . . . . . . . , . , . . . , . . . . . . . . . . , . . . . . . . . . . . . . . . . . , , . . . . , . . , . . . . 8 <br />The 1975-1985 monthly and accumulated precipitation departures from the 20-year average <br /> <br />for Eagle, Colorado ......,............,.......,...,...,.,..,....,......, 9 <br />Abbreviated version of Varnes' classification of slope movements. . , , , . . , , . . . . . , . . 11 <br /> <br />A rockfall. , . . . . . . . . . . . . . . . . , . . . , . . . , . , . . . . . , . . . . , . . . . , . . , , . . . . . , . . . . . . . 12 <br />Rocks in the process of toppling .. .. . .. .. .. .. .. .. . . .. .. . , . . , .. . .. . , . . .. , .. . 12 <br /> <br />A rotational slide. . . . , . . . . . . . . . . . . . . . , , , . . . . . . . , . . " . , . . . , , . . , , . . . . , . , . . . . 13 <br />A translational slide ,...",..,..................,...,.".,...,.,....,..,... 13 <br /> <br />A block slide, . . , . . , . , . . . . . . . . . , . . . . . , . . . . . . . . . . ., . , , . . , . , , . . . . . . . . . . . . . 13 <br /> <br />A lateral spread. . . ... . .. .. . . .. .,. . .. '.,... ...... , , . , . , .. . , . , . '" , . ., .. ,. 13 <br /> <br />Creep ......,....................",..".....,.,...",...,....,.,',... 14 <br /> <br />Debris fan . , . . . . . . , . . , . . . , , . , . . . . . . , , , , . . . . . , , . , , , . . , . . , , . , , , . . . . , , , , . , 14 <br /> <br />An earthflow . , . . . , . . . . . . . . . . , . , . . . , . . . . . . . , . . , . . , . . , . . . . . , , . . , , . . . . , . , . 1" <br />Maximum historical earthquake intensities in Colorado. . , . . . . . . . , . . . . . , . . . . . . , . 20 <br />Detail from the landslide inventory map of the Durango 1 () x 20 quadrangle, Colorado 25 <br />Detail from the Morrison quadrangle folio showing areas :susceptible to landsliding . , 26 <br /> <br />viii <br />