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(Ity ot.rsaa,ta Ana 11uhh( <br />i'uhhc Worizs Agency <br />4'htJt'OSA14 -RFI' 17-1)c1' <br />Geographic tnhwtuation Systems Services arts# Data <br />DIGITAL MAP <br />PRODUCT$ <br />Project Requirements <br />Horlaontal Aqg L4 rr c <br />The daturn for horizontal adjustments and positions must be the North American Datum of 1983 (NAD 83). <br />The datum for vertical adjustments and elevations will be the North American Vertical Datum of 1988 (NA VD <br />88). Further, it must be adjusted to the 2007 [POCH adjustment by the County of orange to account for <br />ground shift In orange County that has caused 2.2' average shift from the 1988 NAD datum. All horizontal <br />values must be published in the California Coordinate System 1983 . (CCS83), Zone 0, State Plane values in U.S. <br />Survey feet. <br />Eagle Aerial Orthophotography meet and exceed these requirements, <br />The ortho Images Must be tied to the current Geodetic control network Prom the orange County Survey <br />Department. They must also have a horizontal accuracy of plus /minus one foot or better throughout the <br />project area. <br />Eagle Aerial Orthophotography meet and exceed these requirements. <br />Ejight Ca njaion <br />All aerial photography must be performed in accordance with specifications established by the American <br />Society of Photogrammetry acrd Remote Sensing. A large format, calibrated digital mapping camera with <br />forward motion compensation must be used. T'he vendor will deliver a Camera Calibration Certificate for the <br />camera used. Planning and acquisition will be performed under the direction of an ASPRS Certified <br />Phatogrammetrist, The Vendor will provide a copy of the certificate confirming the ASPRS certification <br />upon request. <br />Eagle Aerial Crrthophoteagraphy meet and exceed these requirements. Eagle will provide a copy of the ASPRS <br />certification upon request. <br />Bather time of day grid time of ye7r <br />The photography must be captured in the May /June time frame with the sun at least 30 degrees above the <br />horizon. Visibility at time of capture must be a rninimum of 10 miles as reported at local weather stations to <br />assure clear, crisp images. <br />Eagle Aerial Orthophotography meet and exceed these requirements. <br />221 Pa 8e <br />25H -89 <br />