For the City of Lebanon, the use of subterranean stormwater retention system permitted the City to complete the design and to develop and construct on land that they had already acquired. Had the City had to undertake any portion of an unscheduled replacement of the 60 year, 15-inch storm sewer, the municipal building project probably would not have gone forward. The most significant safety feature of the StormTrap® system is that there is no drowning or water related injury risk to people.

• Project Cost - $179,000
  
• Allowed storage for stormwater without dedicating prime downtown real estate to a detention pond
  
• Land area over a subterranean stormwater storage facility can be reutilized for parking or open space/pedestrian uses
  
• Subterranean water is released into existing storm sewers at a controlled rate, which is dictated by the existing storm sewer available capacity to accept water
  
• Minimal clean out maintenance performed semi-annually with a fire hose and the sewer-vac truck
  
• Vault drain outlet can be upgraded as NPDES requirements
  
• Issues related to geese, cattails, and algae blooms are non-existent
• HWC received a 2006 Honor Award from ACEC Indiana for the Lebanon Municipal Building subterranean stormwater retention system