The Rural Planning Group, a project of Housing and Community Development in the Utah Community Development Office, created a wonderful Dark Sky Assessment Guide for communities interested in dark sky protections.
Check it out here! (http://www.ruralplanning.org/assets/dark-sky-assessment-guide—web.pdf)
For more information please visit the Utah Community Development Office website at http://www.ruralplanning.org/ or contact Aubrey Larsen at aubreychristensen@utah.gov.