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<br />I <br />1-. <br />I. <br />I <br />I <br />I <br />I <br />I <br />I', <br />I' . <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br /> <br />Photograph 2. October 1985 <br />Removal of willows by City Crews <br /> <br />4.2 ALAMOSA CITY AND COUNTY ACTIONS TAKEN DURING 1986 <br /> <br />On March 5, 1986, Muller Engineering presented the Rio Grande <br />Levee Improvements Phase I Preliminary Design to the City of <br />Alamosa for their approval and comments. This document <br />presented the results of the preliminary design of the levee <br />system on the Rio Grande for tbe fOllowing areas: <br /> <br />o East Alamosa levee, upstream of the Denver and Rio Grande <br />Western Railroad Bridge to U.S. 160. <br /> <br />o West Alamosa Levee, upstream of the Denver and Rio Grande <br />Railroad bridge to U.S. 160. <br /> <br />o Golf Course Levee, emergency repair only. <br /> <br />The purpose of the preliminary design was to refine <br />construction costs that addressed two main problems with the <br />existing levee system: seepage through and instability of the <br />earth levee, and erosion protection of the levee face. Of <br />major importance to the preliminary design was the preparation <br />of a geotechnical study by Chen and Associates, and the <br />surveying of existing ground by Knapp Engineering and Surveying <br />Services. <br /> <br />The Phase I Preliminary Design recommended that the entire <br />levee system be rebuilt which included designing the levees to <br />be constructed toward the river side of the existing levees to <br />minimize disruption to private property owners. <br /> <br />-18- <br />