What are Total Maximum Daily Loads (TMDL's)? Describe this program. Why is this an important program at this stage of clean water protection? How are ambient water quality standards used? Know what they are, too. Consider the statute and its many parts and programs, what aspects of the law can be When are (what factors? What are FDFs?)) variances granted or considered for NPDES permit effluent limits? If a plant will clearly close down due to the permit limits ill a variance be granted? How different does a plant have to be to be considered a fundamentally different factor? When effluent guidelines are issued are they binding on a company? (no, they have to be incorporated in a (NPDES) permit, the guidelines guide a permit writer at the agency (or State) in how to establish plant specific effluent limits