Investigates potential or actual violations of city, public health and other applicable regulations.   The most common violations investigated include:   -  Building/construction without a valid permit -  Tree removal that exceeds permissible limits and without a valid permit -  Clearing/construction within designated sensitive areas such as wetlands and native growth protection area -  Junk/abandoned vehicles -  Sign code violations   -  Nuisance complaints such as outdoor storage of junk and noise.