Technical Challenges of Utilizing Ground Tire Rubber in Asphalt Pavements in the United States.

At least 275 million scrap tires exist in stockpiles in the U.S. The practice of dumping scrap tires in landfills has been an environmental concern.

An evaluation of freshwater mussel toxicity data in the derivation of water quality guidance and standards for copper.

The state of Oklahoma has designated several areas as freshwater mussel sanctuaries in an attempt to provide freshwater mussel species a degree of protection and to facilitate their reproduction. We evaluated the protection afforded freshwater mussels by the U.S.