BioCNG, LLC is a company established to develop a patent-pending biogas conditioning system that economically produces biogas-based CNG (BioCNG™) to power compressed natural gas (CNG) vehicles. Biogas-based CNG (BioCNG™) can be produced from landfills, wastewater treatment plants, and agricultural and food waste digesters. The fuel can be used in vehicles that are manufactured or converted to use CNG vehicle fuel. The system is already fully operational and is now being used to operate small fleets on landfill gas and wastewater treatment plant gas. The basic BioCNG™ system uses 20 to 200 scfm of biogas to produce 100 to 1,000 gasoline gallon equivalents (GGE) of BioCNG per day and can be expanded if necessary. After cleaning and conditioning, BioCNG™ fuel meets SAE J 1616 and engine manufacturers’ fuel specifications. It can be used directly or mixed with natural gas to produce a blended vehicle fuel at a fraction of the cost of gasoline or diesel and get similar or better engine performance.