The construction team building the Stonehall Bethesda luxury condo building has run into the same problem as Flats 8300 did across Woodmont Avenue - Bethesda's rocky soil. Once again, blasting will be part of the solution to provide sufficient excavation for the project.
Hydraulic rock breaking will also be employed to remove the offending bedrock. If the contractor receives the expected approval from Montgomery County, it will be allowed to exceed the standard noise limit during daytime hours.
Blasting would take place through the end of May, if all goes according to schedule. The work would be restricted to the hours between 7:00 AM and 5:00 PM.
You can expect there may be vibration monitoring equipment again on site. This is to detect excessive vibration that could damage adjacent structures.