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<br />. <br />. <br />. <br />I. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br /> <br />ll.l.l LOCATION ENTERING HOLITA DITCH. The problem arises when the <br /> <br /> <br />storm drain enters the Holita Ditch. The storm drain empties into the Holita Ditch at <br /> <br /> <br />approximately the center of the of the area of the ditch from its start to Interstate Highway <br /> <br />25, At the intersection of Colorado Avenue and Russell Avenue, parallel to Colorado <br /> <br />Avenue, the drain enters the ditch. <br /> <br />11.1.2 DIMENSIONS AND COMPOSmON. The exact dimensions of the storm drain <br />are not available because design drawings are not available. Therefore, rough <br />measurements and estimates were taken at the site. The height of the entrance at the <br /> <br /> <br />highest point is approximately 3' with a length of 4'6". Measurements of5T' by 38" <br /> <br /> <br />were previously reported by the Soil Conservation Service [13]. The composition of the <br /> <br />CM Pipe Arch is metal, either tin or aluminum. <br /> <br />11.2 PHYSICAL ASPECTS OF HOLITA DITCH. During storms, the water <br /> <br /> <br />in this ditch is reported to be immense and out of control. As the water leaves the drainage <br /> <br />pipe, it hits against the opposite bank with immense volume and force. The bank was <br /> <br /> <br />eroding away so it was reinforced with concrete. The water carries much silt and debris <br /> <br /> <br />through that section of ditch and also erodes quite a bit of bank. The dimensions at that <br /> <br /> <br />section are included as well as the dimensions at various other locations within the <br /> <br /> <br />pertinent area in this section of the report. <br /> <br />5 <br />