Fire Suppression — Addition and/or Alterations

INSTALL A NEW 4 INCH AMES COLT 200 BACKFLOW PREVENTION ASSEMBLY FOR AN EXISTING FIRE SUPPRESSION SYSTEM COMPLYING WITH NFPA 13. ALL WORK SHALL BE PERFORMED BY A FIRE SUPPRESSION CONTRACTOR LICENSED BY THE CITY OF PHILADELPHIA. **SUBJECT TO THE FOLLOWING CONDITION OF APPROVAL FROM THE PHILADELPHIA HISTORICAL COMMISSON: Interior only. No exterior work permitted as part of this permit.