On November 5, 2010, the U.S. Environmental Protection Agency (EPA) published in the Federal Register a direct final rulemaking to formally stay the numeric limit and associated monitoring requirements for turbidity in the “effluent limitation guidelines” rule (ELG) for stormwater runoff from “construction and development” (C&D) because of an error in the way the Agency calculated the limit.  EPA plans to propose in December 2010 a “correction rule” for public comment that would revise the current numeric limit of 280 nephelometric turbidity units (NTUs), and then take final action on a revised limit by May 30, 2011.Read the entire AGC Environmental Observer Article

Research the history of the EPA’s Construction & Development ELG Final Rule from December 1, 2009. Go to ELG information on EPA website