Revision History for SIR 2014-5233 Douglas B. Chambers, Mark D. Kozar, Terence Messinger, Michon L. Mulder, Adam J. Pelak, and Jeremy S. White Water Quality of Groundwater and Stream Base Flow in the Marcellus Shale Gas Field of the Monongahela River Basin, West Virginia, 2011–12 ----------------------------------------------------- Posted online April 21, 2015 ----------------------------------------------------- Revised and reposted June 25, 2015 version 1.1 - Modified colors in figure 1 on page 3 to help increase legibility - Fixed errors in table 8 on page 48 - Fixed punctuation error in column heading in Appendix 1 on page 69 -----------------------------------------------------