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<br />SCOPE OF WORK <br />TOPOGRAPHIC MAPPING <br />FOR THE COMMUNITY OF WELDONA (MORGAN COUNTY, COLORADO) <br />AND <br />THE TOWN OF WILEY (PROWERS COUNTY, COLORADO) <br /> <br />The Contractor shall fumish plant, labor, materials, transportation and <br />superintendence to accomplish and deliver to the CWCB Project Manager <br />Topographic Mapping for flood hazard mitigation feasibility studies for two <br />project locations within Colorado. <br /> <br />1. SPECIFIC REQUIREMENTS: <br /> <br />1.1 Purpose of Work: The work to be performed under this scope is to <br />be used for planning and engineering for flood hazard mitigation studies at the <br />community of Weldon a and the Town of Wiley. <br /> <br />1.2 Required Area: The Project Areas requiring Topographic Mapping <br />are shown on Attachments 1 and 2. The total Topographic Mapping coverage <br />needed is approximately 4 square miles. <br /> <br />1.3 Photogrammetric Survey Methodology: The Contractor shall <br />comply with the quality control provisions of Specification for Photogrammetric <br />Services for Floodplain Studies in Colorado, dated November 1992, unless <br />otherwise specified in this scope. <br /> <br />1.3a. Aerial photography for the two project areas shall be flown to <br />support a topographic mapping scale of 1"=200'. Aerial photography shall be <br />taken with a distortion-free aerial mapping camera with a 6-inch focal length <br />that has been calibrated within the past three years by the United States <br />Geological Survey (USGS). A current copy of the calibration report shall be <br />fumished to the Colorado Water Conservation Board. The camera shall comply <br />with National Standards of Map Accuracy established by the U.S. Army Map <br />Service and USGS. <br /> <br />1.3b. Black and white aerial photography shall be obtained at a scale <br />sufficient to cover the desired project areas approximate to what is shown on <br />Attachments 1 and 2. <br /> <br />1.3c. Photography shall be taken when leaves are down and the ground <br />is free of snow. The exact date to obtain the photography must be closely <br />coordinated with the Colorado Water Conservation Board Project Manager Tom <br />Browning. <br /> <br />1.3d. The Contractor shall furnish one (1) set of aerial photo negatives. <br />Each aerial photo negative shall be clearly and fully annotated. All negatives <br />shall be delivered to the Colorado Water Conservation Board rolled on winding <br />spools in dustproof cans. Cans shall be lableled with the name and address of <br />the contracting firm, project name, scale of photography, flight and exposure <br />numbers, dates of photography, calibrated focal length of the lens in <br />millimeters, contract number, and the name and address of the aerial <br />photographic contractor (if other than the prime contractor). <br />