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Each spring, large quantities of dissolved nutrients (such as nitrogen and phosphorous) are transported from the upper Midwest into what is called the Gulf of Mexico Dead Zone — an oxygen-deficient area that grows to approximately 8,000 square miles each year and cannot support marine life.
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PVC rods prolong the life of sidewalks in one Missouri city.
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In 2008 the City of McKinney, Texas-renown for its efforts to create a sustainable community, including the first privately developed LEED Platinum office building in the country and a Wal-Mart that uses photovoltaic arrays, rainwater harvesting, a waste-oil heating system, and two wind...
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Product from the April 2009 Products Newsletter
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Improved technology and raw materials prices prompt agencies to reconsider reclaimed material.
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Transfer traffic loads over concrete to eliminate differential movement.
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Keyhole coring and reinstatement offers a less intrusive repair method.
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Chicago isn't the only “green” city in the Midwest (see “The trickle-down effect,” May 2007, page 36). In Warrenville, located 30 miles west of the Windy City, a plan to improve water quality has resulted in a new way of reconstructing the city's streets.