this is fred ruoso. he is the bla that conducted the study of the municipal fiber a few years ago that had slightly different cost estimates than this most recent report. why don't you share your thoughts with us. >>speaker: our report was issued in march of 2016 and prior to that in 2014 we prepared a report for supervisor marr but the 2016 report the focus of that was on the different approaches that could be used for building a municipal fiber network, a ubiquitous municipal fiber network including fully public municipal network, the private sector approach and then the public/private partnership. our conclusion was that every approach had advantages and disadvantages and risks but the public private partnership reduced some of the costs it might incu.we obtained cost infn from a consultant to dt. this was before the ctc work had been done. the cost estimates were lower. the highest was about $867 million to build the network and that was completed in to 15 and the ctc report came out two years later