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Woodchip Denitrification Bioreactors: Impact Of Temperature And Hydraulic Retention Time On Nitrate Removal, Natasha L. Hoover, Alok Bhandari, Michelle L. Soupir, Thomas Moorman 2017 Iowa State University

Woodchip Denitrification Bioreactors: Impact Of Temperature And Hydraulic Retention Time On Nitrate Removal, Natasha L. Hoover, Alok Bhandari, Michelle L. Soupir, Thomas Moorman

Michelle L. Soupir

Woodchip denitrification bioreactors, a relatively new technology for edge-of-field treatment of subsurface agricultural drainage water, have shown potential for nitrate removal. However, few studies have evaluated the performance of these reactors under varied controlled conditions including initial woodchip age and a range of hydraulic retention times (HRTs) and temperatures similar to the field. This study investigated (i) the release of total organic C (TOC) during reactor start up for fresh and weathered woodchips, (ii) nitrate (NO3–N) removal at HRTs ranging from 2 to 24 h, (iii) nitrate removal at influent NO3–N concentrations of 10, 30, and 50 mg ...


An Analysis Of The Economic And Environmental Impact Of The U.S. Epa's Brownfields Program In New York And New Jersey From 2009 To 2014 Using Gis, Schenine Mitchell, Cindy Wang, Karmin Chong, Angelo Lampousis 2017 Environmental Protection Agency

An Analysis Of The Economic And Environmental Impact Of The U.S. Epa's Brownfields Program In New York And New Jersey From 2009 To 2014 Using Gis, Schenine Mitchell, Cindy Wang, Karmin Chong, Angelo Lampousis

Publications and Research

The United States Environmental Protection Agency (U.S. EPA) as part of its mission to protect human health and the environment has developed a Brownfields Economic Redevelopment Initiative designed to empower States, communities and other stakeholders in economic development to work collaboratively to in a timely manner to prevent, assess, safely clean up and sustainably reuse brownfields. In order to effectively carry out the mission of the Brownfields Program, all ten regions share in the same goal of redeveloping brownfields. In this project we explore correlations between median household income and Brownfields funding (i.e., Phase I/Phase II assessments ...


Murray Energy Corporation V. Mccarthy, Sarah M. Danno 2017 University of Montana School of Law

Murray Energy Corporation V. Mccarthy, Sarah M. Danno

Public Land and Resources Law Review

Holding that the widespread effects of environmental regulation on the coal industry constituted sufficient importance, the Northern District of West Virginia ordered the Environmental Protection Agency to conduct analysis on employment loss and plant reduction resulting from regulatory effects. In admonishing the EPA’s inaction, the court ruled that the Agency had a non-discretionary duty to evaluate employment and plant reduction. Furthermore, the court held that the EPA’s attempt to put forth general reports in place of required evaluations was an invalid attempt to circumvent its statutory duty.


Slides: Dam Operations: Does A Changing World Call For Changing Plans?, Reed D. Benson 2017 Selected Works

Slides: Dam Operations: Does A Changing World Call For Changing Plans?, Reed D. Benson

Reed D. Benson

Presenter: Reed D. Benson, University of New Mexico School of Law 13 slides


Rethinking Western Water Law: Instream Flows, Reed D. Benson 2017 Selected Works

Rethinking Western Water Law: Instream Flows, Reed D. Benson

Reed D. Benson

Presenter: Reed D. Benson, University of New Mexico School of Law 1 page.


Tom Ford, Tom Ford 2017 Loyola Marymount University

Tom Ford, Tom Ford

Faculty Pub Night

No abstract provided.


Nitrogen Sustainability: Impediments To Action And Communication, Eric E. Jorgensen 2017 USEPA

Nitrogen Sustainability: Impediments To Action And Communication, Eric E. Jorgensen

Journal of Environmental Sustainability

“Sustainability” is widely used to imply the presence of explicit consideration of environmentally friendly needs and that high societal-value is placed on those needs. However, it is abundantly clear after 30 years that talking about sustainability and achieving it are two entirely different things. The core concept underlying sustainability is that current human practices and activities be conducted so as to not degrade prospects for future generations. With nitrogen, conflicts about sustainability in-theory and sustainability in-practice are close to the surface because of nitrogen’s central role in food production and economic activity. Measures of nitrogen inputs commonly range as ...


Toxicity Of Fluorescent Tracers And Their Degradation Byproducts, Philippe Gombert, Hugues Biaudet, René de Sèze, Pascal Pandard, Jean Carré 2017 INERIS

Toxicity Of Fluorescent Tracers And Their Degradation Byproducts, Philippe Gombert, Hugues Biaudet, René De Sèze, Pascal Pandard, Jean Carré

International Journal of Speleology

Tracer tests are frequently used to delineate catchment area of water supply springs in karstic zones. In the karstic chalk of Normandy, the main tracers used are fluorescent: uranine, sulforhodamine B, naphtionate, and Tinopal®. In this area, a statistical analysis shows that less than half of the injected tracers joins the monitored restitution points and enters the drinking water system where they undergo chlorination. Most of the injected tracers is absorbed in the rock matrix or is thrown out of the aquifer via karstic springs: then it can join superficial waters where it is degraded due to the sun and ...


A Photosynthesis-Based Two-Leaf Canopy Stomatal Conductance Model For Meteorology And Air Quality Modeling With Wrf/Cmaq Px Lsm, Limei Ran, Jonathan Pleim, Conghe Song, Larry Band, John T. Walker, Francis S. Binkowski 2017 United States Environmental Protection Agency

A Photosynthesis-Based Two-Leaf Canopy Stomatal Conductance Model For Meteorology And Air Quality Modeling With Wrf/Cmaq Px Lsm, Limei Ran, Jonathan Pleim, Conghe Song, Larry Band, John T. Walker, Francis S. Binkowski

U.S. Environmental Protection Agency Papers

A coupled photosynthesis-stomatal conductance model with single-layer sunlit and shaded leaf canopy scaling is implemented and evaluated in a diagnostic box model with the Pleim-Xiu land surface model (PX LSM) and ozone deposition model components taken directly from the meteorology and air quality modeling system—WRF/CMAQ (Weather Research and Forecast model and Community Multiscale Air Quality model). The photosynthesis-based model for PX LSM (PX PSN) is evaluated at a FLUXNET site for implementation against different parameterizations and the current PX LSM approach with a simple Jarvis function (PX Jarvis). Latent heat flux (LH) from PX PSN is further evaluated ...


Weight Of Evidence Evaluation Of A Network Of Adverse Outcome Pathways Linking Activation Of The Nicotinic Acetylcholine Receptor In Honey Bees To Colony Death, Carlie A. LaLone, Daniel L. Villeneuve, Judy Wu-Smart, Rebecca Y. Milsk, Keith Sappington, Kristina V. Garber, Justin Housenger, Gerald T. Ankley 2017 U.S. Environmental Protection Agency

Weight Of Evidence Evaluation Of A Network Of Adverse Outcome Pathways Linking Activation Of The Nicotinic Acetylcholine Receptor In Honey Bees To Colony Death, Carlie A. Lalone, Daniel L. Villeneuve, Judy Wu-Smart, Rebecca Y. Milsk, Keith Sappington, Kristina V. Garber, Justin Housenger, Gerald T. Ankley

U.S. Environmental Protection Agency Papers

Ongoing honey bee (Apis mellifera) colony losses are of significant international concern because of the essential role these insects play in pollinating crops. Both chemical and non-chemical stressors have been implicated as possible contributors to colony failure; however, the potential role(s) of commonly-used neonicotinoid insecticides has emerged as particularly concerning. Neonicotinoids act on the nicotinic acetylcholine receptors (nAChRs) in the central nervous system to eliminate pest insects. However, mounting evidence indicates that neonicotinoids also may adversely affect beneficial pollinators, such as the honey bee, via impairments on learning and memory, and ultimately foraging success. The specificmechanisms linking activation of ...


Proposal For Implementation Of An E-Receipt System And Non-Toxic Compostable Receipt Paper At Umass Dining Facilities, Patricia Murphy, Randa Kallin, Kyle Grasso, Taryn Ramey 2017 University of Massachusetts Amherst

Proposal For Implementation Of An E-Receipt System And Non-Toxic Compostable Receipt Paper At Umass Dining Facilities, Patricia Murphy, Randa Kallin, Kyle Grasso, Taryn Ramey

Student Showcase

For our junior year writing course, we were given the assignment to write a proposal to fix something on campus. As students passionate about sustainability, our group elected to improve an aspect of campus we thought could boost our universities impressive green reputation. We all realized receipt printing is a large and wasteful process at UMassAmherst while both large-scale stores such as Home Depot and smaller venues in downtown Amherst were able to implement an e-receipt system which saves money and resources. Although this proposal started as a class project, our group found through our research that this idea had ...


Evaluating Trophic Rewilding As A Conservation Technique, Aaron Sieve 2017 Augustana College, Rock Island Illinois

Evaluating Trophic Rewilding As A Conservation Technique, Aaron Sieve

Biology: Student Scholarship & Creative Works

The focus for this paper is to define specifically trophic rewilding, determine its efficacy as a conservation technique, and explore ways to lessen one of its key limitations. Trophic rewilding is the conservation technique whereby an extirpated keystone species or ecosystem engineer is reintroduced into a degraded habitat to restore ecological function by triggering trophic cascades. The technique is evaluated through analysis of the concepts of trophic cascades and ecosystem engineers. Key limitations of trophic rewilding are that a lack of population control in reintroduced may cause issues, that many times not enough is known about trophic cascades to be ...


Understanding Community Character As A Socio-Ecological Framework To Enhance Local-Scale Adaptation: An Interdisciplinary Case Study From Rural Northwest Connecticut, Joanna Wozniak-Brown 2017 Antioch University, New England

Understanding Community Character As A Socio-Ecological Framework To Enhance Local-Scale Adaptation: An Interdisciplinary Case Study From Rural Northwest Connecticut, Joanna Wozniak-Brown

Dissertations & Theses

Around the world, municipalities are facing new challenges, not the least of which is climate change. This is especially true for rural communities that, for a variety of reasons, will be disproportionately affected by the climatic changes and accompanying policies or programs.

This dissertation, written in manuscript-style, integrates climate change and social-ecological scholarship to address the unique character of rural communities, to communicate the complexity of rural identity through the term "rural character"; and to empower rural communities to incorporate adaptation strategies into their daily municipal operations and planning.

Specifically, this dissertation seeks to answer the following questions: What is ...


Integrating Project Knowledge And Models: The Next Step In Developing A Payment For Ecosystem Services Scheme For The Big Creek Watershed, Lisa A. Schulte Moore 2017 Iowa State University

Integrating Project Knowledge And Models: The Next Step In Developing A Payment For Ecosystem Services Scheme For The Big Creek Watershed, Lisa A. Schulte Moore

Leopold Center Completed Grant Reports

The team developed a spatially targeted conservation planning scheme to foster water quality decision making in centeral Iowa's Big Creek watershed. The scheme is foundational to the potential development of a Payment for Ecosystem Services (PES) for the watershed. Big Creek watershed is an ideal Iowa location for this project because of the proximity of ecosystem service providers (farmers) to a large number of beneficiaries (water users).


Developing A Hydrological Monitoring Program For Ponds In Wapusk National Park, Manitoba, Using Water Isotope Tracers, Stephanie Roy 2017 Wilfrid Laurier University

Developing A Hydrological Monitoring Program For Ponds In Wapusk National Park, Manitoba, Using Water Isotope Tracers, Stephanie Roy

Theses and Dissertations (Comprehensive)

Northern lake-rich landscapes are vulnerable to increases in surface air temperatures and are changing in dynamic ways. Current meteorological records indicate that some of the greatest warming in the past century has occurred in the Hudson Bay Lowlands (HBL). As the HBL is an extensive wetland consisting of hundreds of thousands of shallow lakes and ponds, it is difficult to anticipate the long-term implications that climate change will have on pond water balance. To develop and implement long-term monitoring of hydrological conditions, sampling of pond water isotope composition has occurred during the past six years in Wapusk National Park (WNP ...


Does Timing Of Herbicide Use Influence Rates Of Germination Or Seedling Biomass Of Native Plants Used For Restoration?, Christine McManamen 2017 University of Montana, Missoula

Does Timing Of Herbicide Use Influence Rates Of Germination Or Seedling Biomass Of Native Plants Used For Restoration?, Christine Mcmanamen

Graduate Student Theses, Dissertations, & Professional Papers

Invasive plants can negatively impact native grasslands by changing their species composition, productivity, and function. Managers commonly use herbicides as a control method; however, this practice can lead to secondary invasion by other non-native invasive plants, unless measures are taken to promote natives. Because of this, managers often seed native plants after spraying herbicides. There is evidence, however, that chemical control of invasive plants may reduce the effectiveness of subsequent seed-addition treatments, but there is currently little quantitative information on optimal timing between spraying and seeding or on variation in herbicide sensitivity among native plants commonly used in seed mixes ...


The Last Best Hope: Are Voluntary Conservation Agreements Effective Tools For Protecting Imperiled Species?, Sophie B. Tsairis 2017 University of Montana, Missoula

The Last Best Hope: Are Voluntary Conservation Agreements Effective Tools For Protecting Imperiled Species?, Sophie B. Tsairis

Graduate Student Theses, Dissertations, & Professional Papers

Candidate Conservation Agreements with Assurances, or CCAAs, are little known, voluntary conservation agreements that protect imperiled wildlife on private lands. These agreements have emerged over the past decade and have had mixed results in providing adequate protections for candidate species.

Landowners, private industries, state and federal agencies, and environmental nonprofits, are using CCAAs as tools to eliminate the need for an endangered species listing. An Endangered Species Act listing can lead to land-use uncertainty for private landowners and this threat is the main incentive to enroll in a CCAA. When landowners enroll in CCAAs they are agreeing to provide specific ...


The Impact Of New York State's 2016 Mold Licensing Requirement On Indoor Air Quality Assessments, Angelo Lampousis, Mark Drozdov 2017 CUNY City College

The Impact Of New York State's 2016 Mold Licensing Requirement On Indoor Air Quality Assessments, Angelo Lampousis, Mark Drozdov

Publications and Research

As of January 2016, New York joined a select number of states in regulating mold. The New York State Department of Labor has approved mold-related training courses in three levels, ranging from two to four days. These include the mold abatement worker, mold remediation contractor, and mold assessor courses. In this presentation we share the experience obtained to date from delivering the above referenced courses and challenges as an approved training provider. We also evaluate the relative effectiveness of the mode of delivery as it relates to different audiences.


Wellness Education And Job-Related Injuries And Illnesses For Federal Employees, Eunice Scott Scott 2017 Walden University

Wellness Education And Job-Related Injuries And Illnesses For Federal Employees, Eunice Scott Scott

Walden Dissertations and Doctoral Studies

Wellness Education and Job-Related Injuries and Illnesses for Federal Employees

by

Eunice Scott

MS, Walden University, 2013

BS, Excelsior College, 2011

Doctoral Study Submitted in Partial Fulfillment

of the Requirements for the Degree of

Doctor of Nursing Practice

Walden University

March 2017

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Work-related injuries and illnesses may lead to absenteeism, which affects the level of productivity. The purpose of this study was to determine the success of an employee workplace training program on work-related injury and illness rates at selected federal districts within a federal organization. Newman's model, which describes internal and external factors that may have an ...


Terrestrial Versus Aquatic Carbon Fluxes In An Agricultural Coastal Floodplain, Jackie Roslyn Webb 2017 Southern Cross University

Terrestrial Versus Aquatic Carbon Fluxes In An Agricultural Coastal Floodplain, Jackie Roslyn Webb

Theses

In ecosystems at the terrestrial-aquatic interface, the carbon cycle is intricately connected between these two components. However, these terrestrial-aquatic carbon subsidies are often neglected in carbon budgets. This dissertation addresses the role of the aquatic pathway in the carbon budget of a “model” ecosystem representing a well constrained catchment. By combining terrestrial and aquatic methodologies, the study revealed important findings on the drivers of aquatic carbon fluxes and the relative contribution of this pathway to offsetting the land carbon sink. This study demonstrated that an interdisciplinary approach to terrestrial-aquatic ecosystems propels our understanding of carbon cycling in these systems.


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