- Environmental Impacts During Marcellus Shale Gas Drilling: Causes, Impacts, and Remedies
From Executive Summary: This study provides a detailed analysis of notices of violations (NOVs) from the Pennsylvania Department of Environmental Protection (PA DEP) from January 2008 through August 2011, categorizing each violation...The number of these environmental violations, however, is a misleading metric because an individual event may be associated with multiple environmental violations. As such, the 845 unique environmental events considered in this study were associated with 1,144 NOVs. To produce an accurate accounting of the environmental impacts of these 845 unique events, this study defines major and non-major environmental events through a detailed examination of NOV records... see Full Text
- The Impact of Marcellus Gas Drilling on Rural Drinking Water Supplies
This report explains key findings from a research study that took place in 2010 to 2011 using data collected from over 200 privately owned water wells. Three key findings are: 1) 40% of rural water wells already exceed at least one EPA drinking water standard (e.g., for coliform bacteria or turbidity) before drilling begins; 2) drilling does not appear to have a statistically significant impact on dissolved methane content in tested wells; 3) bromide may represent a novel contaminant of interest, although post-drilling levels increased in only one well. The authors also believe more intensive and longer-term research is needed. This report is sponsored by the Center for Rural Pennsylvania, a bipartisan legislative agency within the PA General Assembly that seeks to sustain Pennsylvania's rural communities and provide a resource for rural policy.
- Marcellus Shale: A Citizens View
Pennsylvanians believe that gas drilling in the Marcellus Shale has moved too quickly and that public officials need to do a better job protecting their communities and the environment, according to the final report of the Citizens Marcellus Shale Commission.
- Natural gas operations from a public health perspective
Summarizes potential health effects of products and chemicals used in natural gas operations. Toxicological categorization of the products and chemicals that are summarized in the article were acquired by obtaining the Material Safety Data Sheets, reports and environmental assessments from different sources, including states and industry.
- Emissions from Natural Gas Production in the Barnett Shale Area and Opportunities for Cost-Effective Improvements
Natural gas production is prevelant in the Barnett Shale region of Texas. Natural gas has many environmental benefits over coal as an energy source. Oil and gas production from Barnett Shale can impact air quality and release greenhouse gases. The objective of this study is to develop an emissions inventory and identify cost-effective emission controls.
- Drilling Down: Protecting Western Communities from the Health and Environmental Effects of Oil and Gas Production
This report explains the relationship between oil and gas production and their negative impacts on the Rocky Mountain region's human health, air, water, and land. Also mentioned are possible simple solutions to the problems posed by oil and gas pollution such as the widely accepted "reduce, reuse, recycle" concept.
- Regulatory Issues Affecting Management Of Produced Water From Coal Bed Methane Wells
From the introduction: Coal bed methane (CBM) wells are being developed in increasing numbers throughout the United States. These are wells that are drilled into coal seams to withdraw ground water (produced water) to reduce the hydrostatic pressure on the coal seam. The reduced pressure allows methane gas to migrate to the well bore where it moves to the surface and is collected. Where possible, operators prefer to discharge the produced water into nearby streams, rivers, or other surface water bodies. Depending on the chemical characteristics of the produced water, different levels of treatment are applied to the produced water before discharge. In some locations, produced water cannot be discharged and is injected, reused, or evaporated.
Although the CBM industry is producing “natural” gas, such gas may not necessarily be covered under the existing national regulations for discharges from the oil and gas industry. This paper describes the existing national discharge regulations, the ways in which CBM produced water is currently being managed, the current CBM discharge permitting practices, and how these options might change as the volume of produced water increases because of the many new wells being