Environmental Impact Shale Gas - Gas/Electric … of Economic Geology 100 Years of Scientific Impact...
Transcript of Environmental Impact Shale Gas - Gas/Electric … of Economic Geology 100 Years of Scientific Impact...
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Bureau of Economic Geology
100 Years of Scientific Impact
Environmental Impact Shale Gas
100 Years of Scientific Impact
Ian DuncanBureau of Economic GeologyJackson School of Geological SciencesUniversity of Texas at Austin
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Bureau of Economic Geology
100 Years of Scientific Impact
![Page 3: Environmental Impact Shale Gas - Gas/Electric … of Economic Geology 100 Years of Scientific Impact Environmental Impact Shale Gas 100 Years of Scientific Impact Ian Duncan Bureau](https://reader034.fdocuments.us/reader034/viewer/2022051600/5aa7a9fe7f8b9a54748c5eb4/html5/thumbnails/3.jpg)
Bureau of Economic Geology
100 Years of Scientific Impact
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Bureau of Economic Geology
100 Years of Scientific Impact
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Bureau of Economic Geology
100 Years of Scientific Impact
Blowouts and Well Fires
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Bureau of Economic Geology
100 Years of Scientific Impact
Faucets on Fire
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Bureau of Economic Geology
100 Years of Scientific Impact
Lets look at two issues:
1) Water well Contamination
2) Atmospheric Emissions
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Bureau of Economic Geology
100 Years of Scientific Impact
WHAT DO OPPONENTS SAY ABOUT CONTAMINATION OF
GROUNDWATER?
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Bureau of Economic Geology
100 Years of Scientific Impact
“Shale gas development clearly has the potential to contaminate surficial groundwater with methane, as shown by the large number of incidences of explosions and contaminated wells in Pennsylvania, Wyoming, and Ohio in recent years”
Robert Howarth, the David R. Atkinson Professor of Ecology & Environmental Biology at Cornell University, in a formal written submission to the EPA, 2010
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Bureau of Economic Geology
100 Years of Scientific Impact
“… shale gas development has clearly contaminated groundwater and drinking water wells with methane…”
Robert Howarth, the David R. Atkinson Professor of Ecology & Environmental Biology at Cornell University, in a formal written submission to the EPA, 2010
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Bureau of Economic Geology
100 Years of Scientific Impact
“there is considerable anecdotal evidence from the US that contamination of both ground and surface water has occurred in a range of cases”
Wood et al (2011) Tyndall Center at the University of Newcastle
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Bureau of Economic Geology
100 Years of Scientific Impact
WHAT DOES INDUSTRY SAY?
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Bureau of Economic Geology
100 Years of Scientific Impact
“there have been over a million wells hydraulically fractured in the history of the industry…. not one reported case of a freshwater aquifer ever having been contaminated from hydraulic fracturing”
Rex Tillerson Chairman of Exxon MobilCongressional Testimony, 2010
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Bureau of Economic Geology
100 Years of Scientific Impact
“the hydraulic fracturing process is safe, already well regulated by the various States” and that “the hysterical outcry over this process is completely unjustified”
Michael Economides, Professor of Chemical and Biomolecular Engineering, University of Houston, Congressional Testimony
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Bureau of Economic Geology
100 Years of Scientific Impact
Economides has also referred to arguments made by the environmentalists as “two huge lies” and another of their concerns as “preposterous”.
Michael Economides, Professor of Chemical and Biomolecular Engineering, University of Houston, Congressional Testimony
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Bureau of Economic Geology
100 Years of Scientific Impact
WHAT DO WE REALLY KNOW ABOUT GROUNDWATER
CONTAMINATION ASSOCIATED WITH SHALE GAS EXPLOITATION?
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Bureau of Economic Geology
100 Years of Scientific Impact
Groundwater saturated in Methane is in a significant number of water wells overlying the Marcellus Shale and the Barnett Shale
Gas accumulations coincident with Shale gas drilling led to an explosion in Dimock PA
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Bureau of Economic Geology
100 Years of Scientific Impact
Occurrence of high methane in Dimock water wells documented by PA DEP (state regulators)
High methane later confirmed by Duke study (Osborne et al. 2011)
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Bureau of Economic Geology
100 Years of Scientific Impact
Widespread methane contamination of groundwater has been known above Marcellus and Barnett shales for decades prior to shale gas drilling
PA DEP has investigated ~ 70 “stray gas” incidents over last 20 years as well as a number of explosions, most not near shale gas wells.
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Bureau of Economic Geology
100 Years of Scientific Impact
CONCLUSIONS
Causation of groundwater contamination by shale gas activity has not been demonstrated
Focus on implausible water well contamination issues has diverted attention from other issues that may require attention.
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Bureau of Economic Geology
100 Years of Scientific Impact
WHAT ABOUT ATMOSPHERIC EMISSIONS?
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Bureau of Economic Geology
100 Years of Scientific Impact
“widespread air pollution with compounds such as the carcinogen benzene is prevalent in both Texas and Pennsylvania”
Robert Howarth, the David R. Atkinson Professor of Ecology & Environmental Biology at Cornell University, Article in Yale-Environment-360
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Bureau of Economic Geology
100 Years of Scientific Impact
1200 HP Compressor
NOx 16 T/Y, CO – 18 T/Y; VOCs – 3 T/Y; HAPs – 0.5 T/Y
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Bureau of Economic Geology
100 Years of Scientific Impact
Titan Engineering Study Barnett BenzeneEmissions Gas Processing Plants
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Bureau of Economic Geology
100 Years of Scientific Impact
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Bureau of Economic Geology
100 Years of Scientific Impact
Tracking Benzene Plumes
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Bureau of Economic Geology
100 Years of Scientific Impact
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Bureau of Economic Geology
100 Years of Scientific Impact
CONCLUSIONS
“Widespread” air pollution by benzene is not being caused by shale gas activity
Locally elevated emissions are a concern but can be remediated readily
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Bureau of Economic Geology
100 Years of Scientific Impact
“The fracing industry should prepare to be blamed for a myriad of environmental problems until scientists and geologist are better able to define and evaluate the risk and/or extent of contamination caused by fracing fluids”.J. R. Gilbert, 2011(Mo Law Review)
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Bureau of Economic Geology
100 Years of Scientific Impact
Thanks