where we have cca treated word and in particular the playgrounds that are highlighted in red, panhandle playground, golden gate heights, richmond, washington square -- these sites have basically unaccept levels of cca within the wood that again made it a high priority for the task force. we also looked at the evaluations that had been prepared by the san francisco parks alliance over the past few years. the parks alliance produces an annual -- i think biannual failing playgrounds report card and gone out with volunteers from the recreation and park department staff and volunteers from the community groups to evaluate playgrounds so when we look at that universe of 55 playgrounds not all of those are failing. in fact there are a number of "a" 's and b's and the task force looked at the feedback from the volunteer and the condition of the playgrounds. so that was the context. those are some of the major data sources. we looked at demographic data as well as part of the process and you will see that as we go through and in that context the task force focused on the work looking at the 55 playgrounds