As an early step in the broad redevelopment of the former Boulder Community Hospital site on Broadway, Boulder plans to spend about $8 million to renovate one of the site’s buildings and use it for city offices. When the city bought the hospital site from BCH, which is now located in east Boulder, in December 2015 for $40 million, it acquired roughly 355,000 square feet of facilities and 800 parking spaces on a total of 8.8 acres. In assessing what it had bought, the city determined that one of the facilities — the Brenton Building at 1136 Alpine St. — is in “very good condition” and primed for long-term use. … Boulder is in the process of collecting public feedback on possible uses for the site. This phase, which the city is calling “vision planning,” is scheduled to be follow by a drafted site plan later this year.