Assessment of the Local Technical Potential for CO2 Drawdown using Biochar from Forestry Residues and Waste Wood in 26 Counties of Washington State

This report assesses the local technical potential for carbon dioxide drawdown through biochar production using forestry residues and waste wood across 26 counties in Washington state. It estimates available feedstock volumes and evaluates how much carbon could be sequestered through conversion of these materials into biochar. The analysis focuses on regionally available biomass resources, including forest residues and urban wood waste, and considers their suitability for biochar production. Results indicate that substantial quantities of biomass are available, with corresponding potential for meaningful carbon sequestration depending on conversion pathways and utilization. The report frames biochar as a strategy for both waste management and climate mitigation, while noting that actual deployment depends on economic, logistical, and policy conditions. Overall, it provides a regional-scale assessment to inform planning and decision-making.