LIBERTY LAKE, Wash.–(BUSINESS WIRE)–As part of its ongoing commitment to reinvent the customer experience, Comcast today celebrated the grand opening of a new 80,000-square-foot Center of Excellence in Liberty Lake. The state-of-the art facility houses 470 employees today and will eventually house more than 700. State Senator Mike Padden, Liberty Lake Mayor Steve Peterson, City of Spokane Valley Councilmember Ed Pace and Larry F. Soehren, Incoming Board Chair, Greater Spokane Incorporated joi