Service of notice: multiple modes permitted and communications deemed served on tender, publication or affixation. The Ordinance allows multiple modes for serving decisions, orders, summonses, notices or communications, including personal delivery (or by messenger), registered or speed post with acknowledgement, e mail, availability on the common portal, and publication in a local newspaper; where these are impracticable, documents may be affixed at the last known business or residence or on the issuing office's notice board. Service is deemed to occur on the date of tender, publication or affixation; dispatch by registered or speed post is deemed received after the normal transit period unless the contrary is proved.