Emergency (e.g., Fire, Medical, Serious Chemical Spill) -- Day or Night
phone 99 on a campus phone or (212) 854-5555 on other phones
Urgent (but not Emergency) Building Issues -- Day
phone (in order): (347)852-0400; (917)692-8510
Urgent (but not Emergency) Building Issues -- Night
phone 854-2222
Other Building Issues -- Day or Night
e-mail <fixchem@columbia.edu> or phone (in order) 854-2160, -4200