EPA 600/R-02/074 
September 2002 
Aquatic Stressors 
framework and implementation plan for effects research 
U.S. Environmental Protection Agency 
Office of Research and Development 
National Health and Environmental Effects Research Laboratory 
Research Triangle Park, NC 27711 
Recycled/Recyclable 
Printed with vegetable-based ink on 
paper that contains a minimum of 
50% post-consumer fiber content 
processed chlorine free. 
