Horizontal Drilling and High-Volume Hydraulic Fracturing in the Marcellus Shale and Other Low-Permeability Gas Reservoirs, July 2011: ““High-volume hydraulic fracturing” (“HVHF”) is a gas well stimulation technique that has greatly increased the ability to extract natural gas from very tight rock. HVHF, which is often used in conjunction with horizontal drilling and multi-well pad development, is an approach to extracting natural gas in New York that raises new, potentially significant, adverse impacts not studied in 1992 in the Department of Environmental Conservation’s previous Generic Environmental Impact Statement on the Oil, Gas and Solution Mining Regulatory Program. Increased production of domestic natural gas resources from deep underground shale deposits in other parts of the country has dramatically altered future energy supply projections and has the promise of lowering costs for users and purchasers of this energy commodity.”