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2. Moretti, L., Di Mascio, P., and Fusco, C. (2019). Porous Concrete for Pedestrian Pavements. Water, 11.
3. Federal Highway Administration (FHWA) (2023, April 10). Rain and Flooding, Available online: https://ops.fhwa.dot.gov/weather/weather_events/rain_flooding.htm#:~:text=Rain%20causes%20wet%20pavement%2C%20which,25%20percent%20on%20wet%20pavement.
4. Environmental Protection Agency (EPA) (2023, April 01). Soak Up the Rain: What’s the Problem?, Available online: https://www.epa.gov/soakuptherain/soak-rain-whats-problem#:~:text=And%20now%20when%20it%20rains,rivers%2C%20lakes%20and%20the%20ocean.
5. Wethington, B. (2023, July 03). Green Infrastructure in the City of Portland, OR. City of Portland Bureau of Environmental Services Presentation, January 26, 2015. Available online: https://www.casfm.org/wp-content/uploads/2018/01/CASFM_Lunch_and_Learn_20150126.pdf.