KEY PROJECT COMPONENTS:
• Black and White Aerial Photography
• 1”=40’ Planimetric Mapping
• One-foot Contour Data
• Photo Control Survey

TVGA has been retained to provide digital photogrammetric mapping on a yearly basis since 1999.  During the spring flying season, black and white aerial photography is flown at a scale of 1”=330’ (1,980 feet AMT).  Existing site features are collected to show the conditions at the time of the flight.  They are then updated yearly to show the site changes.  All mapping is collected to meet National Map Accuracy Standards (NMAS) for 1”=40’ scale map with a one-foot contour interval.  The mapping can then be used for site planning, volume calculations, and base mapping.