![](/sites/default/files/reference_icons/U.S%20EPA%201999%20NPDES%20Permit%20Writers%27%20Manual.jpg)
U.S. EPA
(1996):
U.S. EPA NPDES Permit Writers' Manual. Water Quality-Based Effluent Limits.
Washington DC:
Environmental Protection Agency (EPA)
URL
[Accessed: 02.05.2019]