This facility processes various recyclable materials and sees high truck traffic. It discharges to the Lower Duwamish, a 303(d)-listed impaired waterbody.The lack of available space onsite was a key factor in the design of this stackable multi-media treatment system. The system takes up roughly one parking stall, and it also has relatively low O&M costs compared to an active treatment system.Since the installation of the treatment system, this facility has achieved consistent attainment on all applicable ISGP parameters.