my quality to talk about these mitigations that i want to talk about in particular litigation nal mitigation. we're going to find ways to power into to use clean energy and we're going to use as clean as possible generators where it's not possible. we're looking very closely at air quality. obviously the other mitt gages are equally important. >> park protection is important. i'm not going to belabor the point. i just wanted to be clear that our focus is on maintaining and protecting the natural and cultural resources in the park lands that brought this event here in this sort of a one of a kind area here in san francisco. we see that as key. we see a need to harmonize these with the marina green as one focus of attention. we also have national park service lands to something that we are preparing in addition to the plan called for a venue agreement that will allow us to really hopefully communicate at the end of this process and the end of the review process. what are the strategies and how we are managing things like this adaptive strategy across the parkland. so that's something that we a