i am michelle yu, and with the help of d.b.i. staff, i am responsible for helping customers with code questions, interpretation to the code as well as lead the code advisory committees. agenda items 1 through 6 are six proposed amendments to adopt the code of the california building standard commission. the codes include the building code, residential building, existing building, electrical code, mechanical, plumbing, and green building code. san francisco is proposing these ordinances to repeal the six current 2016 codes and to adopt the new 2019 california building standards and san francisco amendments. the san francisco amendments to the current 2016 california codes will be carried forward as a 2019 san francisco amendments with no or little technical changes, to be consistent with the changes made by the state and to have the new codes take legal effect on january 1, 2020. the changes before you today in the san francisco amendments include mainly chapter number changes to be consistent with chapter number changes made by t