Orange County NC Website
horizontal control is required and has determined <br />no additional control is required. The North <br />Carolina Geodetic Survey sets the required <br />horizontal ground control using Global Positioning <br />System (GPS) equipment for the services and <br />products to be performed by the Company. The <br />total cost for this phase is $14,000. <br />Phase C. Fully Analytical Aerial Triangulation (FAAT <br />FAAT to properly control the mapping project will <br />be produced as described in the RFP. The Company <br />will produce new FAAT to use in the projections of <br />the orthophotos. Old FAAT will not be used to <br />produce the new orthophoto base maps. The total <br />cost for this phase is $38,400. <br />Phase D. Production of Digital Orthophoto <br />orthophotos will be based on NAD <br />corresponding NAD 83 and NAD 27 <br />four corners of each map sheet. <br />for this phase is $67,915. <br />Pype of Map Number of Sheets by Ma <br />Digital Orthophoto 1" =100' <br />Area Maps (400) <br />Entire County <br />Base Maps: The <br />83 and will show <br />jrid ticks at the <br />The total cost <br />Scale Total <br />1" =200' 1" =400' <br />(90) (88) (578) <br />(132) (132) <br />Digital Orthophoto Standards: The digital <br />orthophotos will be produced and clipped to the <br />modular map sheet boundaries (2,500' x 2,500' for <br />1" =100' scale, 5,000' x 5,000' for 1" =200' scale <br />and 10,000' x 10,000' for 1" =400' scale). Images <br />will not extend beyond the modular sheet <br />boundaries. The methods used in the production of <br />the digital orthophotos, the types and <br />specifications of the equipment to be used (e.g., <br />the DPI and the geometric accuracy of the <br />diapositive scanner), the accuracy and ground <br />pixel resolution of the finished digital <br />orthophotos, and the media, file size, and format <br />to be used in the delivery of the digital <br />orthophotos to the County will be as described in <br />the proposal. The County currently has ARC /INFO <br />GIS software. The Company agrees that the County <br />will need no additional software or hardware in <br />order to store, display or manipulate the digital <br />imagery. <br />Phase E. Topographv: The production of digital topography <br />will be produced and based on the same scale as <br />the digital orthophotos (see Section 1.0 Project <br />Overview of the RFP) and will result in the <br />creation of a Digital Terrain Model (DTM) of <br />2 <br />