TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The carbon dioxide stream used to clean the smaller segments comprises supercritical liquid carbon dioxide. The solvent is an organic solvent to assist in the dissolving of adhesive or glue on the smaller segments of polymer. The solid material waste site comprises a landfill. Preferred Method: The hydrocarbon gas stream is provided by pipeline to the commercial process to provide energy. The commercial process is selected from cleaning with carbon dioxide as a cleaning material and pelletizing polymeric materials. The commercial process involves at least on-site cleaning use of liquid carbon dioxide or supercritical carbon dioxide; using liquid carbon dioxide or supercritical carbon dioxide in a cleaning process, polymeric material cleaning process, polymeric material cleaning process that is part of a solid polymer recycling process, polymeric material cleaning process that is part of a polymer recycling process (where venting of gases, separating of gases into at least three streams, burning of a portion of the hydrocarbon stream, and use of energy from burning to power a process that takes place within an 18 km radius from the separation of gases into at least three gas streams or burning of a portion of the hydrocarbon stream, and use of energy from burning the hydrocarbon stream in a process that takes place within an 18 km radius from the separation of gases into at least three gas streams (preferably at least one of which is carbon dioxide stream). The solvent is used to remove material from the smaller segments of polymer in advance of or at the same time as the use of carbon dioxide used to clean the smaller segments of polymer. At least some carbon dioxide from the carbon dioxide stream is transported through a pipe system to an apparel cleaning facility and used in an apparel cleaning process. The carbon dioxide stream after cleaning of apparel is purified and recycled into the apparel cleaning process. Preferred System: In the system, the waste gas stream site comprises a site having distinct cells of landfill waste mass and controls are present so that waste gas stream sites may be opened and closed from selected cells to control waste gas flow through the system. In the system, at least some carbon dioxide from the carbon dioxide stream is used in a polymeric cleaning process, and cleaned polymer from the polymer cleaning process is pellitized and label removed from pellitized polymer using a co-solvent system comprising at least a first co-solvent selected from terpenes, D-limonene and parafinnic hydrocarbons, and at least one second co-solvent selected from 1-6C alkyl lactates or a system comprising a solvent from 1-6C alkyl lactates.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The plastic is reduced in size to smaller segments of solid plastic during the polymer recycling process, and the smaller segments of plastic are cleaned with carbon dioxide from the carbon dioxide stream.