The City of Corvallis is investigating options to treat its wastewater using constructed wetlands. The Orleans Natural Area site was chosen as the preferred location for this facility. GreenWorks is collaborating with Kennedy Jenks to design a facility of approximately 30 acres, consisting of emergent/scrub-shrub wetlands, ash forests, and infiltration ponds. The purpose of these wetland areas is to reduce the temperature of the wastewater as well as remove nutrients, before the water is released back to the Willamette River. Interpretive elements and park features like pathways and plazas are also being proposed. A Total Maximum Daily Load (TMDL) is a regulatory term in the U.S. Clean Water Act (CWA), describing a value of the maximum amount of a pollutant that a body of water can receive while still meeting water quality standards.