A bio wall is built at Altus Air Force Base, Okla., in order to help filter out manmade chemicals from the groundwater. In 2007, these walls were specifically placed through the natural flow of groundwater so as water slowly flows through the walls, contaminates are filtered out. Although it may seem tedious, this process is the most cost effective and successful way of removing manmade chemicals from the water according to the Altus AFB Environmental Team. (Curtesy photo by Mary Bitney)
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Altus AFB Flickr Albums