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<br />extension on to other photographs, except for cross sections 113 through 124. These cross <br />sections extend from photographs 17-10 through 17-14 to photographs 18-10 through 18-14. <br />Bridge locations are shown with three required cross sections: one upstream, one downstream. <br />and one on the proftle of the bridge deck or road. Diversion structures are shown with two <br />required cross sections, one upstream and one downstream. <br /> <br />Data shall be gathered from left to right (looking downstream) across each section; The interval <br />at which positioning and offset/elevation are recorded shall be approximately 100 feet or at any <br />noticeable break in the grade whichever distance is shortest. A range-range or range-azimuth or <br />equivalent system is required for horizontal positioning. <br /> <br />4. Horizontal Control: All survey data is to be tied into the State Plane Coordinate System <br />(Colorado, NAD ). The monuments are shown and described in items 2a, and 2b, and <br />were established for river survey control. These monuments are in Colorado Zone. <br />NAD <br /> <br />5. Vertical Control: MSL elevations are required. Control elevations shall be obtained from <br />monuments located convenient to the site. <br /> <br />6. Product Requirements: A "fIx" (or spot elevation) is to be taken every 100 feet along each <br />cross section or every noticeable change in grade, which ever is shorter. Each cross section shall <br />be clearly identifIed by the appropriate identifIcation as shown on item 2d. The HEC-2 data (and <br />X-Y-Z intermediate format data, if available) at each section shall be recorded on a floppy disk <br />in the ASCII format shown on the attached examples as the fInal product for the cross sections <br />(item 2c). Cross sections shall be entered into the database in ascending order beginning with the <br />most downstream cross section. <br /> <br />7. In-pro2l"ess Monitorin2 and Review:, <br /> <br />a. Monitoring. The contractor shall provide the Omaha District. or other contracting <br />agency, a detailed schedule of the tasks to be performed under this delivery order at least 10 days <br />prior to initiation of the fIeld work. The contractor shall notify the Omaha District, or other <br />contracting agency, by telephone, of any schedule changes as soon as possible. The Omaha <br />District, or other contracting agency, reserves the right to monitor the data collection process at <br />anytime. The Omaha District, or other contracting agency, also reserves the right to inspect the <br />data checking and manipulation process at the contractor's office by appointment. Monitoring <br />and inspection will consist of spending a day or part of a day in the fIeld with the survey crew or <br />spending a portion of the day observing the data manipulation process in the contractor's office. <br />All monitoring and inspection will be coordinated with the contractor at least 24 hours in <br />advance. The Omaha District, or other contracting agency, will bear the expense of the <br />monitoring process. No extra cost shall be included by the contractor for this process. This <br />monitoring is necessary to insure quality control in the collection and manipulation process, and <br />provide a more timely and accurate review of the submitted products. The work schedule shall <br />