Test students' ability to create a comprehensive green-infrastructure plan for a small town to reduce stormwater runoff and improve water quality. Require a scaled site layout diagram showing at least three interventions (e.g., rain garden, bioswale, permeable pavement), a list of suitable native plant species for each feature with planting rationale, simple runoff-reduction calculations using provided rainfall and impervious-area data, and brief maintenance and community-implementation notes. Assess design clarity, ecological appropriateness, accuracy of calculations, and explanation of water-quality benefits.