| http://www.w3.org/ns/prov#value | - Areas such as roadways, parking areas, roof tops, and walkways have solid surfaces which let water flow across and collect debris, contaminants, and pollutants.In order to protect our sensitive areas from these pollutants, a rain garden provides us a place where we can discharge our storm water, and let this water soak into the ground, and infiltrate these pollutants.How big is a rain garden?
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