Description: This layer includes locations where Marcellus Shale permits had been issued by the Pennsylvania Department of Environmental Protection, as of April 30, 2011. Due to the large number of permits, only a generalized version of this layer is visible until users zoom in past 1:750,000
Description: This layer was created by forming a one mile buffer around Marcellus Shale permits that were issued as of April 30, 2011, for the purpose of increased map performance and accuracy at statewide levels.
Copyright Text: FracTracker Alliance, based on data from PADEP