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Three major breaches occurred along the Ditch. The first occurred approximately 600 ft <br /> down ditch from the headgate and approximately 500 ft up ditch from the subdivision <br /> bridge. This washout eroded the right ditch bank and part of the road. Although the <br /> subdivision experienced major flooding from the Big Thompson River, it appears that <br /> water running into the subdivision from the washed out Ditch saved several residences by <br /> pushing river debris away from homes. As part of the repair, large concrete blocks (2-ft <br /> by 2-ft by 6-ft) were placed along the Ditch wall to stabilize the banks and add structure <br /> to the ditch access road. Excavated sediment from the Ditch was used as fill material <br /> behind the blocks(Appendix A Sketch 1;Appendix D Photo Set 11). <br /> Two other major washouts occurred, approximately 3,500 ft down ditch from the <br /> headgate. The original design was to buttress and fill in these sections; the larger of the <br /> two washouts would have required about 500 cy of fill and the smaller about 35 cy of fill. <br /> Two major issues were encountered during the planning of the repair: 1) limited access <br /> and space for required equipment and 2) the large quantity of material required. <br /> Considering the condition of the road and the location of the washouts, the original repair <br /> plan (as shown in Appendix A Sketch 3) was not feasible in terms of time and cost. <br /> Telesto,the contractor, and Louden discussed other options to repair the ditch access road <br /> and the washouts. Utilizing a field engineering and design approach, a plan was <br /> developed to realign the Ditch to the north of the washed-out region (Appendix C Sketch <br /> 1 and Figure 2). The completed realignment of the Ditch allowed for a straighter flow <br /> path and improved maneuverability. Furthermore, the realignment of the Ditch provided <br /> the appropriate material necessary to repair the washout areas. The completed repairs <br /> and realignment are shown in Appendix D Photo Sets 12 through 14. <br /> 3.0 CURRENT STATUS <br /> During the week of October 28, 2013, the excavation and repair to the Ditch was <br /> completed by the contractor and Louden ran approximately 100 cfs of water through the <br /> newly completed Ditch for three days as a performance test. This test allowed for a <br /> review on the stability and functionality of the repairs, and it cleaned out the sediment <br /> that could not easily be excavated from under the bridges. No problems were detected <br /> Louden Irrigating Canal and Reservoir Company 5 Telesto Solutions,Inc. <br /> rllouden_dttchllouden_dtchlproductr110l3Jloodlengineering recletter111041013fnd_/etter110140110_louden_ns_rnnstructed_lood r rfnal.dory January 2014 <br />