I also applied to this site, and I emailed a faculty member with whom I would like to work. I received an email back from that faculty member within 24 hours and arranged a phone interview with him. He told me that if I wanted a site visit, I needed to email the TD and specifically state that I wanted to come out for an interview and name the date I could be there. I was already scheduled for interviews during all of their open houses, so I just emailed the TD and indicated I was interested in the site and to let me know if I could answer any questions. Over a week later, the TD responded to my email. He gave me feedback on my application and encouraged me to continue speaking with the faculty member I named. So, perhaps it would be beneficial to email a faculty member and/or tell the TD you would like to visit during an open house. Hope that helps!