over when there is active -- will you be handing it over when there is active work being done being donetree? i wonder what the time frame will be. >> i will have our urban forester respond to that. that is a technical issue. i think i know the answer, but she definitely knows. >> get afternoon. department of public works. generally, a tree requires three to five years of water to become established. at that point, it basically can survive on the seasonal rains. we choose trees that can survive on in the rain after the initial establishment time. before the trees are transferred to the property owner, we inspected them. we would do that initial care, that three to five-year time span. supervisor farrell: thank you. supervisor avalos: ok, we can open this up for public comment. >> what i have seen here with the presenters is that they have no idea whatsoever about the demographics of san francisco. and while some of you supervisors arbitrarily are asking some questions, you really need to encourage young people to ride, and we have facilities, for example, in district 11 in the district 9 and