Selected projects must include experimental analysis of the gasification process using coal/plastic/biomass feedstocks. The DOE said experimental process conditions and feedstock blends proposed in the testing campaigns must be justified as being commercially relevant. Projects may also address experimental analysis of slag characteristics, experimental analysis of pre-treatment requirements for combinations of waste plastics, coal and biomass; and experimental analysis of contaminants, impurities, and catalyst poisons that may inform process requirements to clean up and upgrade the hydrogen content of the raw syngas resulting from blended feedstock co-gasification.