Under Colorado law, depending on the circumstances RTD may be required to arbitrate a new collective bargaining agreement with its union. This happened in 2009, and the parties presented extensive testimony over eight days on many different issues, followed by post-hearing briefs. This is RTD's 80-page post-hearing brief: the length was due to the fact that we had over a dozen separate issues to discuss (in effect, a dozen separate mini-arbitrations). I was the overall editor, and wrote the introductory, concluding, and economic (wage) sections.