On Thursday, City of Austin officials approved eminent domain proceedings to reclaim a parking lot between 4th and 5th street that is required to begin the Waller Creek tunnel project. The half-block property is essential to development of the mammoth downtown tunnel project. According to officials, it is needed for two tunnel easements, one temporary and one permanent. The approval does not initiate proceedings to claim the property, but allows city officials to do so if they can not reach agreement with property owners.The Waller Creek Tunnel Project is a storm water bypass tunnel beginning with an inlet . . .