Sep 22, 2014· Comment submitted by Richard A. Denison, PhD, Lead Senior Scientist, Environmental Defense Fund (EDF)· EPA-HQ-OPPT-2011-1019-2043
Attached please find comments of the Environmental Defense Fund (EDF) pertaining to EPA's Advance Notice of Proposed Rulemaking Hydraulic Fracturing Chemicals and Mixtures, Docket ID No. EPA-HQ-OPPT-2011-1019, 79 Fed. Reg. 28664 (May 19, 2014).