Washington, DC : Office of Research and Development, U.S. Environmental Protection Agency, 2016.
Book — 1 online resource : color illustrations Digital: text file; PDF; 41 MB.
"This final report provides a review and synthesis of available scientific information concerning the relationship between hydraulic fracturing activities and drinking water resources in the United States. The report is organized around activities in the hydraulic fracturing water cycle and their potential to impact drinking water resources. The stages include: (1) acquiring water to be used for hydraulic fracturing (Water Acquisition), (2) mixing the water with chemical additives to prepare hydraulic fracturing fluids (Chemical Mixing), (3) injecting the hydraulic fracturing fluids into the production well to create fractures in the targeted production zone (Well Injection), (4) collecting the wastewater that returns through the well after injection (Produced Water Handling), and (5) managing the wastewater via disposal or reuse methods (Wastewater Disposal and Reuse). EPA found scientific evidence that hydraulic fracturing activities can impact drinking water resources under some circumstances. The report identifies certain conditions under which impacts from hydraulic fracturing activities can be more frequent or severe."
Washington, DC : U.S. Environmental Protection Agency, Office of Research and Development, 
Book — 1 online resource (195 pages in various pagings) : illustrations.
"The Metal Finishing Facility Risk Screening Tool (MFFRST), a user-friendly tool that enables anyone to perform a screening characterization of health risks to workers and neighbors of metal finishing processes, was developed by the U.S. Environmental Protection Agency (EPA) under the Common Sense Initiative (CSI) Metal Finishing Sector"--P. x.