Joint Groundwater Monitoring and Contamination Report: 2012 (open access)

Joint Groundwater Monitoring and Contamination Report: 2012

Annual report compiling information about required groundwater monitoring activities and cases of contamination by state-regulated activities during the 2001 calendar year. Includes tables with the enforcement status of each case of contamination.
Date: July 2013
Creator: Texas Groundwater Protection Committee
System: The Portal to Texas History
Environmental Regulation Impacts on Eastern Interconnection Performance (open access)

Environmental Regulation Impacts on Eastern Interconnection Performance

In the United States, recent environmental regulations will likely result in the removal of nearly 30 GW of oil and coal-fired generation from the power grid, mostly in the Eastern Interconnection (EI). The effects of this transition on voltage stability and transmission line flows have previously not been studied from a system-wide perspective. This report discusses the results of power flow studies designed to simulate the evolution of the EI over the next few years as traditional generation sources are replaced with environmentally friendlier ones such as natural gas and wind.
Date: July 1, 2013
Creator: Markham, Penn N; Liu, Yilu & Young II, Marcus Aaron
System: The UNT Digital Library
Water-Smart Landscapes start with WaterSense (open access)

Water-Smart Landscapes start with WaterSense

Report discussing the U.S. Environmental Protection Agency's (EPA's) WaterSense program that concerns water conservation and use.
Date: July 2013
Creator: United States. Environmental Protection Agency.
System: The UNT Digital Library
Estimation of Groundwater Recharge at Pahute Mesa using the Chloride Mass-Balance Method (open access)

Estimation of Groundwater Recharge at Pahute Mesa using the Chloride Mass-Balance Method

Groundwater recharge on Pahute Mesa was estimated using the chloride mass-balance (CMB) method. This method relies on the conservative properties of chloride to trace its movement from the atmosphere as dry- and wet-deposition through the soil zone and ultimately to the saturated zone. Typically, the CMB method assumes no mixing of groundwater with different chloride concentrations; however, because groundwater is thought to flow into Pahute Mesa from valleys north of Pahute Mesa, groundwater flow rates (i.e., underflow) and chloride concentrations from Kawich Valley and Gold Flat were carefully considered. Precipitation was measured with bulk and tipping-bucket precipitation gauges installed for this study at six sites on Pahute Mesa. These data, along with historical precipitation amounts from gauges on Pahute Mesa and estimates from the PRISM model, were evaluated to estimate mean annual precipitation. Chloride deposition from the atmosphere was estimated by analyzing quarterly samples of wet- and dry-deposition for chloride in the bulk gauges and evaluating chloride wet-deposition amounts measured at other locations by the National Atmospheric Deposition Program. Mean chloride concentrations in groundwater were estimated using data from the UGTA Geochemistry Database, data from other reports, and data from samples collected from emplacement boreholes for this study. Calculations were …
Date: July 1, 2013
Creator: Cooper, Clay A; Hershey, Ronald L; Healey, John M & Lyles, Brad F
System: The UNT Digital Library
Experimental High Energy Physics Brandeis University Final Report (open access)

Experimental High Energy Physics Brandeis University Final Report

During the past three years, the Brandeis experimental particle physics group was comprised of four faculty (Bensinger, Blocker, Sciolla, and Wellenstein), one research scientist, one post doc, and ten graduate students. The group focused on the ATLAS experiment at LHC. In 2011, the LHC delivered 5/fb of pp colliding beam data at a center-of-mass energy of 7 TeV. In 2012, the center-of-mass energy was increased to 8 TeV, and 20/fb were delivered. The Brandeis group focused on two aspects of the ATLAS experiment -- the muon detection system and physics analysis. Since data taking began at the LHC in 2009, our group actively worked on ATLAS physics analysis, with an emphasis on exploiting the new energy regime of the LHC to search for indications of physics beyond the Standard Model. The topics investigated were Z' -> ll, Higgs -> ZZ* -. 4l, lepton flavor violation, muon compositeness, left-right symmetric theories, and a search for Higgs -> ee. The Brandeis group has for many years been a leader in the endcap muon system, making important contributions to every aspect of its design and production. During the past three years, the group continued to work on commissioning the muon detector and alignment …
Date: July 26, 2013
Creator: Blocker, Craig A.; Bensinger, James; Sciolla, Gabriella & Wellenstein, Hermann
System: The UNT Digital Library
Hydrate Research Activities That Both Support and Derive From the Monitoring Station/Sea-Floor Observatory, Mississippi Canyon 118, Northern Gulf of Mexico (open access)

Hydrate Research Activities That Both Support and Derive From the Monitoring Station/Sea-Floor Observatory, Mississippi Canyon 118, Northern Gulf of Mexico

A permanent observatory has been installed on the seafloor at Federal Lease Block, Mississippi Canyon 118 (MC118), northern Gulf of Mexico. Researched and designed by the Gulf of Mexico Hydrates Research Consortium (GOM-HRC) with the geological, geophysical, geochemical and biological characterization of in situ gas hydrates systems as the research goal, the site has been designated by the Bureau of Ocean Energy Management as a permanent Research Reserve where studies of hydrates and related ocean systems may take place continuously and cooperatively into the foreseeable future. The predominant seafloor feature at MC118 is a carbonate-hydrate complex, officially named Woolsey Mound for the founder of both the GOM-HRC and the concept of the permanent seafloor hydrates research facility, the late James Robert “Bob” Woolsey. As primary investigator of the overall project until his death in mid-2008, Woolsey provided key scientific input and served as chief administrator for the Monitoring Station/ Seafloor Observatory (MS-SFO). This final technical report presents highlights of research and accomplishments to date. Although not all projects reached the status originally envisioned, they are all either complete or positioned for completion at the earliest opportunity. All Department of Energy funds have been exhausted in this effort but, in addition, …
Date: July 31, 2013
Creator: Lutken, Carol
System: The UNT Digital Library