PHILADELPHIA — The city of Philadelphia announced a plan to spend $1.6 billion on best management practices such as rain gardens, green roofs, and porous pavement to manage stormwater and reduce combined sewer overflows.
PHILADELPHIA — The city of Philadelphia announced a plan to spend $1.6 billion on best management practices such as rain gardens, green roofs, and porous pavement to manage stormwater and reduce combined sewer overflows.