PRESORTED STANDARD 
POSTAGE & FEES PAID 
EPA 
PERMIT NO. G-35 
United States 
Environmental Protection 
Agency 
National Center for Environmental Assessment 
Office of Research and Development 
Washington, DC 20450 
Official Business 
Penalty for Private Use 
$300 
Recycled/Recyclable 
a. A Printed with vegetable-based ink on paper that 
^1 J contains a minimum of 50% post-consumer 
fiber and is processed chlorine free. 
