MCPS Digs Up Asbestos and Former Building at BCC Middle School #2 Site #RockCreekHillsPark

MCPS apparently did not bother to do an Environmental Impact Study on the Rock Creek Hills park site before they began digging for construction of the new BCC Middle School #2.

Did MCPS' construction department simply not want to think about the fact that the lower part of the former school that was on part of this site had simply been covered up by dirt?  

The construction crew has now excavated part of the former school building and found asbestos.
  
What will this added asbestos abatement project and excavation of the former school building add to the cost of this middle school construction project?