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<br /> <br />Mitigation <br /> <br />Many methods of mltl:)atlon can be desl'3ned tor i1ctl"e or <br />potentially active landslide ar-ells. These generally fall <br />Into tour categories: 1 1 change of slope shape, 2) drainage <br />manage~ent. J) retaining structures, and 4) special <br />treatments. Change of slope shape methods Include 8Kcavatlng <br />the dntire slide, benChl";!. 9Kcavatlng the upper part of the <br />slide, lncraaslng the weight and resistance to movement of <br />the lower part of the 51 Ide (Ioilding), and a combination of <br />8Kcavatlon and loading. <br /> <br /> <br />through <br />lIarlou$ <br /> <br />A landslide on the edge of a subdivIsion _est of Denver Is <br />destined to "shrink" backyards unless stabilizatIon measures <br />iH"e taken. <br /> <br />construction practices. ~eta'nln9 structures used to control <br />landslides Include buttresses, piles, ~alls, and anchors. <br />Special treatments for slide control Include freezing, <br />grouting, blastIng and vegetatIve plantlngs or other surface <br />cover for ~ater and erosion management. <br /> <br />Land Use <br /> <br />The above mitigation technIques can be quite costly, <br />partIcularly for I~rge landsl Ide areas, and are often used <br />only as ~ last resort or to protect e~penslve structures. <br />Even then they may be temporary and In the long run <br />Ineffective. In general, recognition and avoIdance of <br />landsl Ide areas ~Ith al I structural land uses Is desIrable. <br />Sl]nlflcant earth moving or structural use of the land nearly <br />al~ays justIfies a thorough analysIs of the landsl Ide <br />~otentlal prior to construction. In some situations, such as <br />hlgh~~y construction, landsl Ide-prone areas are unavoIdable <br />and mitigatIon measures must be uti I Ized to fit the <br />clrcumstllnces. <br /> <br />27 <br />