Laserfiche WebLink
<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 />I <br />I <br /> <br />The projected total cost of the Master Plan Improvements is $2,089,285 (1979 <br />dollars), which includes costs for construction, engineering, contingencies, <br />fiscal, legal and administrative expenses. The total annual maintenance <br />costs are estimated to be $10,820. A summary of these costs is given in <br />Table I-I. A breakdown of these costs is presented with each of the plan and <br />profile drawings at the end of this report. <br /> <br />It is recommended that the folowing sequence be established for final design <br />and construction of the selected improvements: <br /> <br />I. The 5-year detention facility upstream of Ash Street. <br /> <br /> <br />2. Channel improvements adjacent to the mobile home park. <br /> <br />3. Flow separation structures at irrigation ditches. <br />4. Street crossing improvements. <br /> <br />5. Other private improvements as private development takes place. <br /> <br />The improvements itemized above are related to each other, but may be imple- <br />mented independently. The highest priority has been given to the 5-year <br />detention facil ity, because it greatly reduces peak flows and flood damages <br />downstream. <br /> <br />The remaining sections of this report describe the hydrologic, hydraulic and <br />economic background information for the master planning alternatives studied, <br />and the details of the selected plan. Additional information regarding the <br />Phase A and Phase B Master Pl an is avail ab 1 e at the office of the Urban <br />Drainage and Flood Control District. <br /> <br />This Master Plan has addressed the flood problems which exist in the 3207 <br />drainage basin. The selected improvements effectively reduce the existing <br />flood hazards and provide guidelines and preliminary design for future devel- <br />opment. The existing floodplain ordinances of the City of Broomfield and <br />Westminster, in conjunction with the Flood Hazard Del ineation Report, are <br />effective tool s by which adequate flow area for conveyanceof the 100-year <br />flood can be maintained. This Phase B report furnishes preliminary design <br />information so that future basin development may satisfy the space demand of <br />the major drainage system. <br /> <br />2 <br />