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Technical Reports: Environment

U.S. Environmental Protection Agency

National Service Center for Environmental Publications (NSCEP)
Central repository and distribution center for EPA publications. NSCEP / NEPIS is the U.S. Environmental Protection Agency's publications resource for over 26,000 digital titles are available FREE of charge to search and retrieve, download, print and/or order from the NSCEP.Includes 400 Series (Air and Radiation, OAR), 500 Series (Solid Waste and Emergency Response, OSWER), 600 Series (Research and Development, ORB), 700 Series (Prevention, Pesticides and Toxic Substances, OPPTS) and 800 Series (Water, OW) and more. The National Environmental Publications Internet Site (NEPIS) database was integrated under (NSCEP) for one stop access to all EPA publications.

Clearinghouse for Inventories and Emission Factors
Links to resources used for developing PM 2.5 emission inventories. 

U.S. Geological Survey

USGS Publications Warehouse
Access to over 100,000 publications written by USGS scientists over the century-plus history of the Bureau.