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625627 
Technical Report 
EPA Report 
Ambient water quality criteria document: Addendum for acenaphthene 
U.S. Environmental Protection Agency :: U.S. EPA 
1990 
U.S. Environmental Protection Agency 
Cincinnati, OH 
Under the 1977 Clean Water Act, Congress mandated the U.S. Environmental Protection Agency to develop ambient water quality criteria for 129 priority Pollutants. These criteria were published in 1980. Under Section 304(a)(1) of the Clean Water Act as amended in 1987, the U.S. EPA is mandated to re-evaluate and update these criteria every five years. These addenda represent an updated literature search current as of 1988, plus additional information from Agency files and Program Offices. The addendum is to update the existing Ambient Water Quality Criteria Document for Acenaphthene.