On arrival, building manager yana met us at lobby along with maintenance guy Jose, in which they described the scope of work needed along with the issues into which are leading into the building constantly having stoppages in mainline branch affecting 1st floor units.after a walkthrough and layout of areas we proceeded with providing an estimate in areas they wanted to work on first due to severity of issue.she also established that they have a master plumber that will be doing all the underground in sections per unit if needed be however he does not have camera among other special machinery needed to professionally and properly clean sanitary system to identify conditions of lines. Sent estimate I’m which she will call me by Friday with final decision since they will hold a meeting with board by then.