Agmt 2003 HJW Geospatial Inc - Laserfiche WebLink

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and shadows. 'The photography shall meet all specifications for accurate photogrammetric mapping. One set of diapositives (for mapping) and two sets of contact prints will be generated. All photography shall be on 9" x 9" continuous black and white film, taken by an aerial camera with forward motion compensation (FMC). All images and fiducial marks shall be clear, sharp and free of streaks, scratches and blemishes. Contrast should be uniform between images. Unacceptable photography will be reflown at no additional cost to the city. Aerial photography deliverables shall consist of: • One set of 9"x 9" black and white prints of aerial photography covering the City's project. • One mapping layout of index showing the boundary of each orthophoto provided on a USGS base map at an appropriate output scale (Delivered at the end of the project). 7.0 AEROTRIANGULATION HJW shall supply the City a printout of the block adjustment showing all the control used in the adjustment, all residuals on control and tie points, and a tabulation of the root mean square error for control and tie points. HJW shall also provide to the City a brief narrative describing equipment, procedures and programs used as well as misfits encountered at control points and steps taken to resolve discrepancies. A digital file of the aerotriangulation results shall also be provided. Aerotriangulation deliverables shall consist of: Aerotriangulation Report (Includes plot of all supplemental control locations) 8.0 DIGITAL TERRAIN MODEL AND CONTOURS HJW is proposing to determine areas of change and to update the existing DTM by means of photogrammetric methods. Working closely with the City's staff and by comparing the original photography against the new flight we will determine areas of change. We will draw a polygon along the apparent boundary of the area(s) of change on a per model basis and then proceed to create a new DTM within these areas of change. The operators will also scan each model grid by grid to determine if the original data (centerlines, utility data, etc.) does not coincide with the new photography and make changes appropriately. The existing Digital Terrain Model (DTM) shall be updated at a level of density to support the production of digital orthophotos, and the generation of 2' contours. HJW will set each stereornodel needing update and check the existing DTM against the new photography to determine if any change has occurred. If there has been sufficient change, the DTM will be corrected to show that change. The DTM masspoint and breakline data shall be compatible with AutoCAD software and ESRI ArcGIS 8.2. Exhibit A Page 4 of 4 03J07/03 Hammon, Jensen, Wallen & Associates, Inc.