| http://www.w3.org/ns/prov#value | - The rainwater can be reused for irrigation or flushing toilets (Clark and Acomb 2008).Subsurface Detention/Retention: Engineered tanks or trenches filled with gravel, rocks, or other aggregate material to provide large storage areas, are used in combination with permeable surfaces to control, store, and filtrate significant runoff volume before it is slowly released into the surrounding groundwate
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