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By Joe Minor (anonymous) | Posted May 12, 2011 at 10:00:59 in reply to Comment 63418
There are numerous ecological problems caused by replacing living vegetation with dead space. Concrete only solves one (the nasties that come off asphalt). Concrete still causes sheet runoff (exacerbating erosion problems) and acts as a dam, disturbing water flows to natural areas. The problem is spikes in peak flow that cause erosion in the short term, combined with a drying effect in the long term. As for the numerous other problems that come from killing vegetation and replacing it with dead space, please see the other comments.
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