these again are some details and if you have questions i have our consultant from sgh, carolyn sultz, who developed these details and went through all the water testing to answer any issues but to say we're not following the historic profile of this building would be incorrect. now, there was the discrepancies that were pointed out in the drawings in the 50 percent sd, which was february or march of last year. we were just beginning. our initial reaction from the architecture group was to replace the windows -- we first thought we wouldn't have to do anything. then we thought, well, we have it replace the skylights, we thought we'd do steel skylights, steel stashed skylights, framed skylights to match the existing and then we realized that it was so badly deteriorated we had to do the roof as well. the roof is lead coated copper and we are replacing that with zinc and with the skylights, as i mentioned, we first talked about steel. so the discrepancy in the only documents which is typical as you develop a project, it's been a year since then, you lack at different conditions and the a