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Kirkman R.,Environmental Operations | Stephens D.,Bamford
Proceedings of Institution of Civil Engineers: Energy | Year: 2010

This paper provides output data for the first year of operation of the new Sheffield energy recovery facility. It should be of interest to the energy provision community as a whole, but particularly to those promoting, planning, designing, constructing or operating a renewable electricity and heat energy facility utilising non-recyclable, kerbside-collected, municipal solid waste as fuel. An overview of the location of the facility and the extent of the associated district energy network is provided. Details of the fuel, energy output, emissions and operating data are given.


Turnipseed S.B.,U.S. Food and Drug Administration | Romano J.,Environmental Operations
Journal of Agricultural and Food Chemistry | Year: 2013

The papers in this special issue of Journal of Agricultural and Food Chemistry were originally presented at the 49th annual Florida Pesticide Residue Workshop (FPRW). The FPRW is an annual meeting for scientists specializing in trace level analysis of pesticides, veterinary drug residues, and other chemical contaminants in food, animal feed, and environmental samples. © 2013 American Chemical Society.


Houde M.,Center Saint Laurent | Douville M.,Center Saint Laurent | Gagnon P.,Center Saint Laurent | Sproull J.,Prairie and Northern Laboratory for Environmental Testing | Cloutier F.,Environmental Operations
Ecotoxicology and Environmental Safety | Year: 2015

Trichloroethylene (TCE) is a ubiquitous contaminant classified as a human carcinogen. Vinyl chloride (VC) is primarily used to manufacture polyvinyl chloride and can also be a degradation product of TCE. Very few data exist on the toxicity of TCE and VC in aquatic organisms particularly at environmentally relevant concentrations. The aim of this study was to evaluate the sub-lethal effects (10. day exposure; 0.1; 1; 10. μg/L) of TCE and VC in Daphnia magna at the gene, cellular, and life-history levels. Results indicated impacts of VC on the regulation of genes related to glutathione-. S-transferase (. GST), juvenile hormone esterase (. JHE), and the vitelline outer layer membrane protein (. VMO1). On the cellular level, exposure to 0.1, 1, and 10. μg/L of VC significantly increased the activity of JHE in D. magna and TCE increased the activity of chitinase (at 1 and 10. μg/L). Results for life-history parameters indicated a possible tendency of TCE to affect the number of molts at the individual level in D. magna (. p=0.051). Measurement of VG-like proteins using the alkali-labile phosphates (ALP) assay did not show differences between TCE treated organisms and controls. However, semi-quantitative measurement using gradient gel electrophoresis (213-218. kDa) indicated significant decrease in VG-like protein levels following exposure to TCE at all three concentrations. Overall, results indicate effects of TCE and VC on genes and proteins related to metabolism, reproduction, and growth in D. magna. © 2015.


Stark T.D.,University of Illinois at Urbana - Champaign | Lafiura D.,Ultra Poly Corporation in Portland | Fought S.,Environmental Operations
Geotechnical Special Publication | Year: 2016

Pennsylvania Department of Environmental Protection (DEP) and Department of Community and Economic Development (DCED) officials welcomed the recent creation of an entity that collects and reprocesses geomembranes used in various aspects of Marcellus shale oil and gas drilling, development, and production. These various aspects include well pad liners, above ground impoundments, secondary containment, and floating covers. Well pad liners are placed over a large area (usually 60 m (200 ft) by 60 m (200 ft)) around the drill well to contain drilling fluids, provide an anti-slip surface for drill workers, and contain oil and gas products. Above ground containment ponds are used for a variety of containment purposes, e.g., drill pad water, well flowback water, and shale derived liquids. Secondary containment geomembranes are used around oil and gas storage tanks to contain any leaks from these tanks. Floating covers are used to prevent contact with the environment and wildlife of various liquids associated with the shale play. © ASCE.


Deb A.K.,Environmental Operations | Haque C.E.,University of Manitoba
Sustainability | Year: 2011

Due to its deltaic geographical position and precarious socioeconomic and demographic conditions, Bangladesh is recognized worldwide for its exposure to recurring environmental hazards. Based on a 21-month long field study in two fishing villages that are characterized by distinct ecological settings and ethnic groups, this article examines the arrays of cross-scale environmental, social and institutional stressors that singly or cumulatively impact fishers' livelihood well-being and generational poverty. Analysis of the vulnerabilities makes it clear that the degree to which poor fishers suffer from environmental stressors and calamities is determined not only by the frequency of abnormal events, but also by their internal capabilities of self-protection, resilience against those stressors, position in the social network and asset and resource ownership. Coastal and floodplain fishers identified cyclone and long-standing floods as strong drivers of poverty as their bundles of 'safety net' capital are usually disrupted or lost. For a majority of the fishers, income/day/family declines to as low as US$ 0.7-0.9. Fishers lack appropriate sets of endowments and entitlements that would allow them immediate buffer against livelihood stressors. Vulnerability here is intricately related to one's socio-economic status; poor and 'socially vulnerable' ethnic fishers are concurrently 'biologically vulnerable' too. The corollary of multi-faceted stressors is that, poverty persists as an ever-increasing haunting presence that thousands of floodplain and coastal fishers of Bangladesh are forced to cope with. It is evident that nature-induced stressors exert 'ratchet effects' on fishers with low endowments who critically risk nutritional deprivation and social standing. Lucidly, most of the fishers are trapped in a form of 'livelihood war'. © 2011 by the authors.


Russell D.L.,Environmental Operations
Problemy Ekorozwoju | Year: 2010

This is a different approach to the subject of sustainability which suggests: 1) that certain activities are inherently unsustainable; 2) that sustainability be defined with regard to a basic level of technology, economy, and demand; 3) that sustainability can be better managed by looking at the energy and waste and consumption from manufacturing, and treating the technologies as "black boxes"; 4) the environmental permit data from manufacturing concerns needs to be made more public because the effect of the publication of that information will enhance pollution reduction; 5) that we need to define pollution receptors and assign the costs to develop trans-boundary solutions; and 6) that there is a lot of fruitful work still to be performed on developing very good estimates of the capacity of agricultural, non-agricultural, and oceanic receptors.


Iida Y.,Environmental Operations
NEC Technical Journal | Year: 2011

Next year 2012, is the 20th anniversary of the 1st Earth Summit that was held in Rio de Janeiro in 1992. The international mechanisms for conserving the Earth proposed there, such as the reduction of Greenhouse Gas (GHG) emissions and the conservation of biodiversity have tended to diversify the range of commercial activity. The future calls not for measures that are confined exclusively to an enterprise, region or nation, but for those that are applicable on a global scale. With such measures, the fundamentals can be summarized into the three layers of "observation," "analysis" and "proposal and execution of the actual measures." M2M can act as a platform for processing these three layers within the framework of the ICT (Information and communications technology) infrastructures. This paper discusses the new values that will be added in the automation and integration of global-scale "observations" and "analyses" by combining the extensive spatial sensor technology owned by NEC with the M2M technologies.


Ferreira J.A.Z.,Environmental Operations | Ferreira J.A.Z.,University of Texas at Austin | Zornberg J.G.,University of Texas at Austin
Geotechnical Testing Journal | Year: 2015

This paper presented a newly developed transparent pullout testing device conceived with the objective of studying the soil-geogrid interaction under small displacements and strains. The bottom plate and the side walls of the pullout box were transparent. The system involved a transparent soil, which was tested as a surrogate for sands in the testing program. The setup led to 3D visualization of the soil-geogrid interaction as it allowed direct visualization of the plan view of the geogrid as well as of the side view of the soil-geogrid interface. Markers embedded in the transparent soil mass allowed tracking of soil particle displacements during the test. The tests were conducted using a polypropylene biaxial geogrid and both transparent soil and a conventional sand. Displacements along the geogrid were obtained continuously using digital image correlation (DIC) techniques in tests with transparent soil, and using telltails at five junctions in tests with sand. Comparison of test results with both soils showed that the transparent soil constitutes a good surrogate for sands in pullout studies. The pullout test with transparent soil also indicated that displacements along the geogrid could be properly described using an exponential function. Moreover, exponential fitting to the displacement data led to an exponential distribution of strains along the geogrid during pullout testing. Deflections of transverse ribs were first observed at early stages of the test when only 25 % of the maximum pullout force developed. The observed displacement patterns of the soil markers were useful in defining the zone of influence of the geogrid, which could be successfully quantified using the newly developed testing device. Overall, the new equipment was found to represent an effective tool to better understand the mechanisms involved in soil-geogrid interaction, particularly those that are relevant to quantify the interface stiffness. Copyright © 2015 by ASTM Int'l (all rights reserved).


SPRINGFIELD, VA / ACCESSWIRE / December 19, 2016 / Versar, Inc. (NYSE MKT: VSR) announced today that the Versar-ERRG Joint Venture team was awarded the Environmental Services & Construction ID/IQ contract for the Pacific Air Forces Region (ES&C-PACAF) with a contract ceiling to be shared among eight awardees totaling $48 million. This new contract, for work on behalf of the Air Force Civil Engineer Center (AFCEC), provides for the performance of Environmental Operations and Services, Environmental Restoration, and Environmental Construction services. It is intended to facilitate environmental programs and related work in AFCEC's PACAF region, including potential task order assignments in Alaska, Hawaii, and Korea/Japan. The contract vehicle has a five-year ordering period, during which task orders may be awarded and performed. Any awarded work may also be performed for three additional years following the basic five-year ordering period. Versar is the managing partner of the Joint Venture. Tony Otten, CEO of Versar, said, "We are very pleased to continue our work with AFCEC and recognize the importance of the PACAF region to the U.S. Air Force and the Defense Department in the coming years. AFCEC is a significant and long-standing Versar customer. Through our proven remediation capabilities and ongoing environmental work with ERRG, Inc., the Joint Venture offers AFCEC a dedicated and highly qualified team for assignments in the United States and around the world." Cindy Liu, President and CEO of ERRG, said, "We are honored that our Joint Venture team was selected by AFCEC to support PACAF, and we look forward to providing meaningful and practical solutions to the environmental challenges facing AFCEC. Additionally, we are delighted that this contract allows us to continue the highly successful working relationship between Versar and ERRG that began in 2011." VERSAR, INC., headquartered in Springfield, Virginia, is a publicly-traded global project management company providing sustainable value oriented solutions to government and commercial clients in the construction management, environmental services, and professional services market areas. VERSAR operates the following websites: www.versar.com and www.versarpps.com. Find out more about VERSAR at: This news release contains forward-looking information. The forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements may be significantly impacted by certain risks and uncertainties described herein and in Versar’s Annual Report on Form 10-K filed with the Securities and Exchange Commission for the fiscal year ended June 26, 2015, as updated from time to time in the Company’s periodic filings. The forward-looking statements are made as of the date hereof and Versar does not undertake to update its forward-looking statements.

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