but is an outgrowth of the working group that was formed following marilee's executive -- mayor lee directive. is applicable to the sub phase prior to the sub phase application submittal. largely it will summarize design criteria that were approved in prior documents that were reviewed by city agencies. the infrastructure plan, the streetscape master plan, utility master plan and subdivision regulations. it will also identify any infrastructure elements that are unable to conform to the treasure island subdivision regulations or san francisco standard plans with required to design exceptions. our primary issue here is on utility separations below grade. there are subdivision regulations that call for certain separations between water and storm water and wastewater systems. because we have separate storm and sewage collection systems that most of san francisco has combined systems, and because we have possible water and reclaimed water and a supplemental firewater system, we just have more pipes underground than many streets in san francisco. so there are times when those pipes have to be clos