Our infrastructure design is also structured based on a uniform distribution of waste plastic from only residential sources. The composition of real recyclable streams, and distribution of different types of plastic, can vary by location and socio-economic factors, providing another opportunity for the incorporation of region-specific composition data to refine the accuracy of our model results. If other plastic waste sources were to be included in the scope of our analysis, total required processing capacity (and therefore capital costs) could increase, but the processing capacity of this solution network is not completely exhausted.