Construction Consultants


Wilton, CT

Extreme Ultraviolet (EUV) Cleanroom

Project Features
  • 14,500 sf total
  • ISO 6 cleanroom
  • 70 ft x 30 ft, 12-ft-deep excavated pit
  • Phased project approach
  • Noise and vibration controls (isolation slabs)
  • Waterproofing under concrete to address high water table
  • Multiple design changes successfully incorporated while construction continued (prompted by continually changing technology the space was designed to accommodate)

JMC constructed this 14,500 sf cleanroom to increase ASML's manufacturing space. This complex project involved significant excavation while ensuring the safety of employees and continued facility operations.
Delivery Method:
Construction Management at Risk

H&R Design, Danbury, CT

Award Winner:
ABC National Chapter Excellence in Construction Award
“The construction of our new space became, ultimately, very complex, requiring the excavation of a 12-foot pit beneath our existing structure. We continued to occupy the building throughout construction. The project team communicated with our staff and paid close attention to every detail, making sure that we had a safe work environment in which to maintain our normal business."

– Kevin Quinn, Facilities Manager, ASML