The Nevada Operations Office of the Energy Research and Development Administration (ERDA) has contracted with Petroleum Technology Corporation (PTC) to perform a gas stimulation program by chemical explosive fracturing (CEF) in the Canyon sands of the Val Verde - Kerr Basin of Sutton County, Texas. This lenticular tight sand deposit, underlying much of southwestern Texas, contains large volumes of natural gas. To date this formation has yielded only marginal amounts of gas because of its low porosity and permeability. The semi-arid environment of the Aldwell/Sawyer field is characterized by dry arroyos and xeric vegetation. Population is sparse and sheep ranching is the primary occupation. Because of the existence of previously drilled oil and gas wells, road and pipeline construction will be minimal. Impacts from this two well project are expected to be minimal and be confined to temporary surface disruption and increased erosion at the well site.

Parent map for Kimble County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Parent map for Sutton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Parent map for Sutton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Parent map for Sutton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Parent map for Sutton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Parent map for Val Verde County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:15,000.

Parent map for Sutton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Index map for Val Verde County, Texas showing the distribution of census blocks and smaller inset areas for which the U.S. Census Bureau collected data. The plotted map scale is 1:168,878.

Parent map for Sutton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Parent map for Sutton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Index map for Edwards County, Texas showing the distribution of census blocks and smaller inset areas for which the U.S. Census Bureau collected data. The plotted map scale is 1:128,961.

Parent map for Sutton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Index map for Menard County, Texas showing the distribution of census blocks and smaller inset areas for which the U.S. Census Bureau collected data. The plotted map scale is 1:85,974.

Parent map for Schleicher County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:20,000.

Parent map for Kimble County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Parent map for Schleicher County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:20,000.

Parent map for Crockett County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:24,000.

Parent map for Edwards County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:18,000.

Parent map for Sutton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Parent map for Schleicher County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:20,000.

Parent map for Kimble County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Parent map for Sutton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:19,000.

Parent map for Crockett County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:24,000.