A method of sequestering carbon captured from the atmo­sphere by plants (biomass) waste material includes segre­gating incoming waste material that includes biomass into high-moisture incoming waste material and low-moisture incoming waste material. The low-moisture incoming waste material is that which has a moisture content less than or equal to the moisture content threshold, for example, paper, cardboard, and sawdust. The low-moisture incoming waste material is stored in a dry containment area, thereby emis­sions of carbon dioxide or methane from the low-moisture incoming waste material is reduced as moisture is required by such material to decompose.