(LB) DUMB's
DUMB's need water, surface water collected and directed to reservoir.This is not for flood control! (pic related). Notice clean nature of collection area and riprap lined trenches.
Underground construction generates vast amounts of spoils that have to be processed in plain sight so you will always find a quarry/gravel plant near by. Notice huge stock of gravel and relatively small pits! Usually spoils are transported at night with belly dumper fleets.(this also applies to Wal-Mart stores)!