In our recent case, four separate crews of people went out into the field to collect basically the same data. With perhaps one extra day, one crew could have done the field work and saved several days of time. The irrigation consultant, for example, could simply have added layers to a CAD file provided to him. As it was, he collected data from the field (set up a GPS system and prepared for a few day's work), built the CAD files AND added the valves and irrigation data.