Some cities, such as Costa Mesa, collect green waste separately to keep it out of a landfill and to convert it to biofuel.  The is an example of a strategy.

This practice highlights a waste management strategy known as source separation or material recovery. By collecting organic waste separately, cities can prevent it from being mixed with general waste that goes to landfills. Instead, this organic material can be processed and converted into biofuel, which is a renewable energy source.

Source separation not only helps in reducing landfill usage but also supports sustainable practices by recycling organic matter into useful energy, thus contributing to environmental conservation and reducing greenhouse gas emissions associated with traditional waste disposal methods. This strategy reflects a broader commitment to sustainability, as it encourages cities to implement systems that enhance waste recovery and renewable energy generation.