Shale Gas & Oil Controversies • Methane in water wells • Water consumption • Groundwater contamination by HF • Fracture fluid additives • Surface spills at well pads • Well blowouts • Induced seismic effects • Flowback and produced water management • Deep injection well disposal • Atmospheric emissions • Health impacts • Methane emissions, greenhouse gas issues • Community impacts 10
Community Impacts: A Partial List • Atmospheric emissions & health impacts • Increased traffic • Impacts on roads • Increased noise • Aesthetic effects – short and long term • Need for well pad setbacks • Economic impacts (beneficial) • “Energy boom” effects • Population growth outpacing infrastructure • Home value & rent increases • Emergency services • Health care • School populations 11
Carrizo location – UT Arlington Bureau of Economic Geology Barnett Drilling Location University of Texas at Arlington 12
One mile 13
UT Study on Methane Leakage in Hydraulic Fracturing http: //www. utexas. edu/news/2013/09/16 /understanding-methane-emissions/