| http://www.w3.org/ns/prov#value | - For stormwater, as the rain???s runoff flows over impervious surfaces, such as paved streets, parking lots and rooftops, it picks up debris, chemicals, sediment and other pollutants that flow into and contaminate rivers. ???All this stuff really adds up,??? says Travis Williams of Willamette Riverkeeper, who says part of the work they do is keeping people aware of the stormwater issue to help redu
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