ARIZONA — A coalition of local governments, timber industry representatives and environmental groups plans to tell congressional leaders and US Forest Service officials this week that Northern Arizona’s forests — and the timber industry that depends on them — face collapse without construction of a second, 30-megawatt biomass-burning power plant. The group will carry that message to Washington, DC, arguing that a “biomass bottleneck” threatens forest restoration efforts, watersheds and rural communities. Two concurring reports outline the concern: one issued by the Eastern Arizona Counties Organization and the Natural Resources Working Group in the White Mountains, and another from the Greater Flagstaff Forest Partnership (GFFP) and the Forest Biomass Coalition Working Group. …The report concludes that, while private industry may eventually develop products such as fiberboard or biochar from forest byproducts, only a second biomass-burning plant near Flagstaff or Winslow offers a proven, near-term solution.