i want to thank my chief of staff sunny ann gula for sticking with this issue and bottom lining it now for half a dozen years. and this is not a new issue for the san francisco board of supervisors. the initial legislation that is chapter 41 of the administrative code goes back to 1979 when there was a profound understanding that our single resident occupancy stock was plummeting and being converted to, in many instances, tourist hotel uses and 40 years ago, the board of supervisors passed legislation to address this issue. today, we're down to some 19,000 units down from about 35,000 units for housing for people on low and extremely low-incomes. a number of years ago in 2017, the board of supervisors unanimously adopted amendments which i proposed relative to updating the chapter 41 ordinance, which mayor lee then signed into law that was the recipient of a subsequent ceqa lawsuit. this addresses that challenge. i want to thank and acknowledge lisa gibson and her staff at the planning department and our deputy city attorneys for crafting an extraordinary environmental document, this n