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<br />002821 <br /> <br />prohibition on the use of landslide-prone lands, is not <br />possible, it is feasible to use these lands in a way that <br />minimizes landslide losses. Thus, it is possible to use such <br />land for recreational open spaces, watersheds, agriculture, and <br />other activities for which the loss in the event of a landslide <br />will be small. It is even possible to allow low-intensity <br />physical development in such areas if appropriate precautions <br />are taken. The principal issue in programs of avoidance is the <br />lowering of land values associated with designation as a <br />landslide-prone area." <br /> <br />"Design, building, and grading codes are regulatory tools <br />available to local government agencies for achieving desired <br />design and building practices. They can be applied to both new <br />construction and preexisting buildings. In rare cases, such as <br />those involving large offshore structures, the effect of <br />landslides can be considered explicitly as part of the design, <br />and the facility can be built to resist landslide damage. In <br />some cases, existing structures in landslide-prone areas can be <br />modified to be more accommodating to landslide movement. The <br />extent to which this is successful depends on the type of <br />landsliding to which the structure is exposed. Facilities <br />other than buildings (e.g.. gas pipelines and water mains) can <br />also be designed to tolerate ground movement. Codes and <br />regulations governing grading and excavation can reduce the <br />likelihood that construction of puildings and highways will <br />increase the degree to which a location is prone to <br />landslides. Various codes that have been developed for <br />feger_al,-state, .'lOcl loc.a 1 . imp.1 el11entat ion .G.an be. u.SE!.C,L,!s.1119.deJ s <br />for landslide-damage mitigation. A fundamental concern with <br />design and building codes is their enforcement in a uniform and <br />equitable way." <br /> <br />Various types of land-use regulations and development policies can be used to <br />reduce landslide hazards. These methods are often the most economical and the <br />most effective means for local governments. Types of regulations include: <br />hillside-development regulations, zoning, subdivision ordinances, rebuilding' <br />moratoriums, and abatement districts. These and more are discussed in detail <br />in Appendix "B". <br /> <br />- 36 - <br />