San Mateo Community College District’s Building 9 contains both the Campus Library and Administrative Offices and is the hub of the entire Canada campus.  The extensive rehabilitation project required that the windows and entire building skin be removed and replaced while the building was fully occupied and operational with a high level of student traffic both in and around the building throughout each day. To keep students and facility safe, Lyons constructed work corridors utilizing interior framed walls around the perimeter of the building so window, stucco and remediation work could progress without mixing public and work areas.   Fire exits were maintained at all times and coordinated with the local Fire Department.  Polyvinyl Core board was placed on the student side of the temporary walls providing total containment of the work areas.  Entry and exit doors were protected with secure tunnels to keep students and faculty safe during ingress and egress. The remediation project was accomplished on time and without any student or faculty disruption or incidents.