The F:M in the wastewater treatment network at a National Park in Wyoming was optimal from July – October. There was consistent organic carbon loading during this time from tourist activities. However, when the park closed for the winter, the biomass declined due to reduced influent flows. This caused treatment issues in the beginning of the next tourist season in May and June because biomass declined during the slow recreation months November-April. Thousands of visitors arrived in the spring and the park did not have the necessary biomass to process the increased loads. The Utilities Supervisor contacted BioLynceus® for a solution to support biomass in their system year-round.