2. Flood ins/Pacific Intnl Eng - Laserfiche WebLink

Page 5 of 7 Pacific International Engineering Maple River- Phase I Proposal July 18, 2003 Orthophotography Specifications Photo Scale 1"=850' Orthophoto Accuracy Scale 1"=100' Scan Resolution 14 micron Scan Pixel Resolution .47' Orthophoto Pixel Resolution .5' Orthophoto Image Tile Dimension ¼ section Image Tile Overlap Yes File Size per Tile 30 Mb Estimated Number of Tiles 364 Upon request, and at additional cost, plots containing orthophotography may be produced using Light Jet Digital Plotter technology. This high-resolution, continuous-tone imagery may be plotted in conjunction with titleblocks, grids, contours, spot elevations and geographic annotations. Imagery may be plotted to a reproducible mylar and/or photographic paper. - Accuracy - The services rendered will be performed in a manner consistent with the level of care and skill ordinarily exemised by similar members of the photogrammetric profession of good standing. Sound and generally accepted photogrammetric principals will be adhered to with regard to photo scale, equipment calibration and operator experience to achieve the accuracy required by the scope of work. The accuracy of this data presumes that there is no discernible error in the ground control survey. The mapping procedure is designed to meet the National Map Accuracy Standard for orthophotography, which is: · 90% of all visible features will fall within 1/30th of 1" at final map scale. · The remaining 10% of all visible features will fall within 1/15th of 1" at final map scale. LiDAR Accuracy: Resultin.q Accuracy Estimates (1 si.qma) Estimated Cross-Track Error Estimated Along-Track Error Estimated Height Error Nadir FOV Edge meters .23 .25 meters .23 .25 meters .17 .18 · Mapping areas obscured by, but not limited to vegetation, may not meet accuracy standards. - Client Responsibility - It is the responsibility of the client to field-verify the accuracy of the map information. It is also the responsibility of the client to confirm that the map scale, contour interval and map accuracy fulfills the purpose for which the mapping is intended.