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Kerenhapukh, Yuestika, Ananda Fadhila, Henna Notrian Puteri, Putri Fadilah e Abdul Halim. "Effectiveness of Waste Management in the United States of America". Frequency of International Relations (FETRIAN) 3, n. 1 (20 novembre 2021): 33–55. http://dx.doi.org/10.25077/fetrian.3.1.33-55.2021.
Testo completoAbstract (sommario):
Waste is a significant concern at this time. No matter what country, waste will always exist in people's daily lives, including the United States. To deal with all types of waste, the United States has implemented policies and regulations called the Environmental Protection Agency (EPA) and 3R.This study aims to see how the policies launched by the United States, namely the Environmental Protection Agency and 3R, in dealing with environmental problems, where one of the causes is that it comes from various types of waste, both from the household sector and large companies. In writing this journal, the author uses a descriptive-qualitative research method based on green theory. The environmental crisis has penetrated almost all parts of the world since the 60s, starting from an individual protest until finally, this environmental problem has become an international concern; green theory is present as a form of concern for the environment because the environment is the world's primary asset, so by saving the environment indirectly also save the inhabitants of the earth. Each country is competing in finding ways to overcome these problems. One of which is the United States. The environmental protection agency and 3R are some of the steps taken by the United States in dealing with environmental problems in the hope that the policies taken can save them from environmental problems not only in the present but also in the future, where several factors cause these problems. In this program, the United States implements several activities. The most important is providing education about the dangers of waste and recycling waste in the environment. This is done in response to the environmental crisis, which is the leading cause of damage and life crises, including disease. In this paper, the authors also see how effective Environmental Protection Agency policies are and describe several types of waste that damage the environment.
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O'Connor, Thomas P. "Total Water Management: A Research Project of the United States Environmental Protection Agency". Proceedings of the Water Environment Federation 2011, n. 9 (1 gennaio 2011): 6334–46. http://dx.doi.org/10.2175/193864711802766452.
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Mortelliti, Joseph. "Whose Standards Control? Maine v. McCanhy and the Federal, State, and Tribal Battle Over Water Quality Regulation". Michigan Journal of Environmental & Administrative Law, n. 6.2 (2017): 523. http://dx.doi.org/10.36640/mjeal.6.2.whose.
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This Note considers the longstanding clash between the United States government and state governments over the management of intrastate waters through the lens of Maine v. McCarthy, an ongoing federal lawsuit. McCarthy confronts whether the United States Environmental Protection Agency can require state water quality standards to specifically safeguard the health and cultural practices of Maine’s Indian tribes, particularly sustenance fishing. A panoply of legal and political factors gave rise to and shaped the course of the litigation, ranging from tribal sovereignty to agency discretion and political gamesmanship. After evaluating the litigants’ arguments and examining previous regulatory collisions between the Environmental Protection Agency and state governments, this Note argues that the Environmental Protection Agency has the authority to dictate changes to Maine’s water quality standards, regardless of preexisting agreements granting Maine regulatory control over state waters.
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Carnes, Richard A. "The united states environmental protection agency combustion research facility: A commitment to hazardous waste management". Journal of Hazardous Materials 13, n. 2 (aprile 1986): 197–206. http://dx.doi.org/10.1016/0304-3894(86)80019-x.
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Schnobrich, Popham Haik, e James A. Mennell. "Enhanced Monitoring Requirements for Air Emission Sources in the United States". European Energy and Environmental Law Review 4, Issue 4 (1 aprile 1995): 115–16. http://dx.doi.org/10.54648/eelr1995026.
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The regulation of emissions to the air is currently at the top of the agenda for US environmental lawyers. In addition to emission limits, air emission sources will be subject to extensive monitoring requirements. This short article reviews the proposals of the U S Environmental Protection Agency for an Enhanced Monitoring Program, affecting industries operating in the US.
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Kimble, Gina, James Amburgey e Helene Hilger. "Improvements inCryptosporidiumrecovery and variability through modifications to United States Environmental Protection Agency Method 1623". Water and Environment Journal 27, n. 2 (26 novembre 2012): 269–74. http://dx.doi.org/10.1111/wej.12010.
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Orts, Eric W. "A Reflexive Model of Environmental Regulation". Business Ethics Quarterly 5, n. 4 (ottobre 1995): 779–94. http://dx.doi.org/10.2307/3857414.
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Although contemporary methods of environmental regulation have registered some significant accomplishments, the current system of environmental law is not working well enough. First the good news: Since the first Earth Day in 1970, smog has decreased in the United States by thirty percent. The number of lakes and rivers safe for fishing and swimming has increased by one-third. Recycling has begun to reduce levels of municipal waste. Ocean dumping has been curtailed. Forests have begun to expand. One success story is the virtual elimination of airborne lead in the United States. Another is the rapid phase-out of ozone-layer depleting chemicals worldwide. Nevertheless, prominent commentators of diverse political persuasions agree in an assessment that conventional models of environmental law have “failed.” Many environmental problems remain unsolved: species extinction, global desertification and deforestation, possible global climate change, and continuing severe air and water pollution in urban areas and poor countries. What is more, successful environmental protection has come only at enormous economic cost. By the year 2000, the Environmental Protection Agency (EPA) estimates that the United States will spend approximately two percent of its gross national product on environmental pollution control. Academic economists have pointed out the nonsensical inefficiency of many environmental regulations, but usually to no avail.
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Bailey, Patricia M. "The Changing Role of Environmental Agencies". European Energy and Environmental Law Review 6, Issue 5 (1 maggio 1997): 148–55. http://dx.doi.org/10.54648/eelr1997023.
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While both the European Community and the United States now have "environmental agencies", the European Environment Agency ( ("EEA") and the Environmental Protection Agency ("EPA ") respectively, these agencies are at different stages of development and have been assigned significantly different tasks. With the recent emphasis on regulatory reform and alternatives/complements to command-and-control legislation, the roles of these agencies will likely change in the future. This article examines the changing role of the EPA and considers whether some of the methods used by the EPA could be developed by the EEA to expand its role in a similar fashion. The article begins with a brief analysis of why the roles of these agencies are changing. It continues with an overview of the EEA and the EPA. The article then looks at methods utilised by the EPA as alternatives and complements to traditional enforcement and considers how some of these methods could be employed by the EEA.
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Harvey, Michael G. "The Marketing of Potentially Toxic Pesticides Worldwide: The Issues and a Proposed Control System". Journal of Public Policy & Marketing 7, n. 1 (gennaio 1988): 203–18. http://dx.doi.org/10.1177/074391568800700115.
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It is estimated by 1990 United States based multinational corporations (MNCs) will export over one billion dollars or pesticides and chemicals that have been banned by the Environmental Protection Agency (EPA) for sale in the domestic market. The potential environmental hazards and dangerous side effects to inhabitants of foreign countries could be devastating. This article examines the growth of sales of pesticides which have been banned domestically, why they create such a hazard in foreign countries as well as a “boomerang effect” in the United States, and explores a means to more adequately monitor and control the sale of these pesticides worldwide.
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Cook, Jeffrey J. "Framing the debate: How interest groups influence draft rules at the United States Environmental Protection Agency". Environmental Policy and Governance 28, n. 3 (1 marzo 2018): 183–91. http://dx.doi.org/10.1002/eet.1801.
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Müller, Simone M. "Hidden Externalities: The Globalization of Hazardous Waste". Business History Review 93, n. 1 (2019): 51–74. http://dx.doi.org/10.1017/s0007680519000357.
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This article focuses on chemical retailers Jack and Charles Colbert to, first, show the externalization processes linked to the greening of U.S. industry through stricter consumer and environmental protection regulations and, second, illustrate the limitations of nationally framed environmentalism targeting businesses in a global market. Throughout the 1970s and 1980s, the Colberts traded chemicals that the U.S. Environmental Protection Agency had banned for use in the United States. They exported them legally to countries where the material was still a permitted commodity—primarily in the global South. Rare interview material illustrates how the exporters justified their unequal business deals by misappropriating the meaning of recycling.
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Young, Ben, Wesley W. Ingwersen, Matthew Bergmann, Jose D. Hernandez-Betancur, Tapajyoti Ghosh, Eric Bell e Sarah Cashman. "A System for Standardizing and Combining U.S. Environmental Protection Agency Emissions and Waste Inventory Data". Applied Sciences 12, n. 7 (28 marzo 2022): 3447. http://dx.doi.org/10.3390/app12073447.
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The U.S. Environmental Protection Agency (USEPA) provides databases that agglomerate data provided by companies or states reporting emissions, releases, wastes generated, and other activities to meet statutory requirements. These databases, often referred to as inventories, can be used for a wide variety of environmental reporting and modeling purposes to characterize conditions in the United States. Yet, users are often challenged to find, retrieve, and interpret these data due to the unique schemes employed for data management, which could result in erroneous estimations or double-counting of emissions. To address these challenges, a system called Standardized Emission and Waste Inventories (StEWI) has been created. The system consists of four python modules that provide rapid access to USEPA inventory data in standard formats and permit filtering and combination of these inventory data. When accessed through StEWI, reported emissions of carbon dioxide to air and ammonia to water are reduced approximately two- and four-fold, respectively, to avoid duplicate reporting. StEWI will greatly facilitate the use of USEPA inventory data in chemical release and exposure modeling and life cycle assessment tools, among other things. To date, StEWI has been used to build the recent USEEIO model and the baseline electricity life cycle inventory database for the Federal LCA Commons.
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Jacangelo, Joseph G., Daniel J. Askenaizer e Kellogg Schwab. "Research needs in drinking water: a basis in regulations in the United States". Journal of Water and Health 4, S1 (1 luglio 2006): 1–9. http://dx.doi.org/10.2166/wh.2006.0037.
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Regulations are one of the primary drivers for research on contaminants in drinking water in the United States. Since the original Safe Drinking Water Act (SDWA), enacted in 1974, the United States Environmental Protection Agency (USEPA) has developed a series of drinking water regulations. These regulations are focused on protecting public health. When evaluating available information on whether or not to regulate a constituent in drinking water, USEPA considers available information on health effects and occurrence of the constituent. The authors provide their view of the research needed for these contaminants. For inorganics, more data are needed on perchlorate. For organics, greater treatment and health effects information is warranted for N-nitrosodimethylamine (NDMA), methyl tertiary butyl ether (MTBE) and pharmaceuticals and personal care products. Finally, more research is needed on analytical methods for noroviruses and other emerging pathogens.
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Beck, Marcus W., Benjamen Wetherill e Jillian Carr. "MassWateR: Improving quality control, analysis, and sharing of water quality data". PLOS ONE 18, n. 11 (1 novembre 2023): e0293737. http://dx.doi.org/10.1371/journal.pone.0293737.
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The long-term protection and restoration of aquatic resources depends on robust monitoring data; data that require systematic quality control and analysis tools. The MassWateR R package facilitates quality control, analysis, and data sharing for discrete surface water quality data collected by monitoring programs of various size and technical capacity. The tools were developed to address regional needs for programs in Massachusetts, USA, but the principles and outputs can be applicable to monitoring data collected anywhere. Users can create quality control reports, perform outlier analyses, and assess trends by season, date, and site for more than 40 parameters. Users can also prepare data for submission to the United States Environmental Protection Agency Water Quality Exchange, thus sharing data to the largest water quality database in the United States. The automated and reproducible workflow offered by MassWateR is expected to increase the quantity and quality of publicly available data to support the management of aquatic resources.
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Lambert, Lixia He, e Courtney Bir. "Evaluating water quality using social media and federal agency data". Journal of Water and Health 19, n. 6 (7 ottobre 2021): 959–74. http://dx.doi.org/10.2166/wh.2021.187.
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Abstract United States Environmental Protection Agency (USEPA) drinking water violation report is currently one of the most reliable measures of evaluating United States drinking water quality. While states continuously strive to comply with federal water quality standards making this documentation continuously relevant, consumers are likely to perceive water quality through sensory aesthetics or physical and virtual social networks. This research quantifies the relationship between consumer perceptions and government-reported drinking water quality to provide insights to state water managers and policymakers. We evaluated consumer perceptions of tap water using weekly social media data. The online search returned 898,709 mentions and 799,035 posts. Net sentiment, measured as the number of negative posts minus the number of positive posts divided by the number of posts expressing sentiment, was determined and ranged from −100 to 100. Net sentiment was uncorrelated with USEPA weekly water quality violations for most states. Net sentiment was correlated with violations related to arsenic standards (−0.223) and a total number of violations (−0.220) for Washington. For California, net sentiment was correlated with violations related to disinfectants and other organic compounds (−0.295). In many cases, water violations in one city became national news, which eclipsed local water issues circulating on social media.
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LaDou, J. "The American Experience with Hazardous Waste Management". Asia Pacific Journal of Public Health 1, n. 4 (ottobre 1987): 41–45. http://dx.doi.org/10.1177/101053958700100411.
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The United States created a fund in 1980 to clean up hazardous wastes contaminating the environment and to seek out and clean up abandoned dumping sites that harbour hazardous materials. Many of these locations are not known at this time, and others are as much as one hundred years old. The amount of money actually needed to accomplish the goals of legislation is merely speculation. The Of fice of Technology Assessment estimates that dealing with the most critical 10, 000 sites will cost US$100 billion. The impact of hazardous wastes on the public health of surrounding communities is interpreted with caution. Of the 900 hazardous waste dump sites receiving priority attention by the Environmental Protection Agency (EPA), only 20 have been studied for effects on human health. No prospective study has been initiated among affected populations yet. Federal laws and most state laws do not provide a mechanism for compensating individuals who have developed illnesses from environmental exposures to hazardous waste sites.
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de Saillan, Charles. "United States Court Upholds Regulation of Greenhouse Gas Emissions: Coalition for Responsible Regulation, Inc. v. Environmental Protection Agency". European Energy and Environmental Law Review 22, Issue 3 (1 giugno 2013): 116–29. http://dx.doi.org/10.54648/eelr2013009.
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Last year, the US Court of Appeals (D.C. Circuit) upheld a series of findings, interpretations, and regulations that the Environmental Protection Agency (EPA) had issued as its first steps to limit the emissions of greenhouse gases under the Clean Air Act. First, EPA had made a finding that emissions of greenhouse gases from motor vehicles cause or contribute to an endangerment to the public health or welfare. Second, to address this endangerment, EPA together with the Department of Transportation, promulgated greenhouse gas emission and fuel efficiency standards for cars and light trucks for model years 2012 through 2016. EPA estimates that these standards will reduce greenhouse gas emissions by approximately 960 million metric tons of CO2 equivalent over the life of these model years. Third, EPA formally reaffirmed its interpretation that the motor vehicle emission standards - by regulating greenhouse gases under the Act - would trigger permitting requirements for greenhouse gas emissions from stationary facilities. These permitting requirements include the installation of best available control technology to reduce greenhouse gas emissions from new or modified facilities. Fourth, EPA issued regulations phasing in these permitting requirements over several years. Rejecting a multitude of challenges, the court upheld all these actions, thus paving the way for EPA to significantly regulate and limit greenhouse gas emissions from motor vehicles and stationary facilities. On 26 June 2012, the prominent US Court of Appeals for the District of Columbia Circuit handed the Barak Obama Administration a decisive, quadruple victory in its efforts to limit greenhouse gas emissions through regulations. The court upheld the finding of the US Environmental Protection Agency (EPA) that greenhouse gas emissions are reasonably anticipated to endanger public health and welfare. The court also upheld EPA regulations and interpretations that will require reductions in greenhouse gas emissions from motor vehicles and large stationary sources. The court reaffirmed its decision, denying a petition for rehearing, on 20 December 2012. The decision paves the way for significant mandatory reductions of greenhouse gas emissions in the US.
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Boehm, Alexandria B., Nicholas J. Ashbolt, John M. Colford, Lee E. Dunbar, Lora E. Fleming, Mark A. Gold, Joel A. Hansel et al. "A sea change ahead for recreational water quality criteria". Journal of Water and Health 7, n. 1 (1 ottobre 2008): 9–20. http://dx.doi.org/10.2166/wh.2009.122.
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The United States Environmental Protection Agency is committed to developing new recreational water quality criteria for coastal waters by 2012 to provide increased protection to swimmers. We review the uncertainties and shortcomings of the current recreational water quality criteria, describe critical research needs for the development of new criteria, as well as recommend a path forward for new criteria development. We believe that among the most needed research needs are the completion of epidemiology studies in tropical waters and in waters adversely impacted by urban runoff and animal feces, as well as studies aimed to validate the use of models for indicator and pathogen concentration and health risk predictions.
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Meyer, Paul. "Recent Research and Development Testing Conducted at Ohmsett – The National Oil Spill Response Research and Renewable Energy Test Facility". International Oil Spill Conference Proceedings 2017, n. 1 (1 maggio 2017): 1345–65. http://dx.doi.org/10.7901/2169-3358-2017.1.1345.
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Abstract 2017-321 The Department of the Interior’s Bureau of Safety and Environmental Enforcement (BSEE) National Oil Spill Response Research and Renewable Energy Test Facility, Ohmsett, plays a critical role in advancing oil spill response capabilities through research, development, testing, and training. Ohmsett’s 10 million liter (l) saltwater wave tank provides an independent venue to conduct research and development with full-size response equipment using real oil, in realistic, repeatable conditions. This paper will discuss recent research and development conducted at Ohmsett, including: Remote sensing of surface oil by BSEE, the National Oceanic and Atmospheric Administration (NOAA), the United States Army, the United States Coast Guard (USCG), and the United States Environmental Protection Agency (U.S. EPA); using acoustics to measure oil slick thickness; creating large volumes of emulsions for Ohmsett tests; mechanical recovery of chemically treated, undispersed oil; skimmer testing in diminishing slick thickness; a USCG and BSEE test of a skimmer ice management system; and an autonomous skimmer development. This paper will summarize the setup and methodology used during recent testing, training, and research conducted at Ohmsett. Reports of BSEE funded oil spill response research can be found at https://www.bsee.gov/site-page/master-list-of-oil-spill-response-research.
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HU, SHUNFU, e JIANPENG ZHOU. "DEVELOPING A GIS-BASED INFORMATION MANAGEMENT SYSTEM FOR ON-SITE WASTEWATER TREATMENT FACILITIES". International Journal of Software Engineering and Knowledge Engineering 18, n. 04 (giugno 2008): 503–13. http://dx.doi.org/10.1142/s0218194008003738.
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On-site wastewater treatment facilities (WWTFs) collect, treat, and dispose wastewater from dwellings that are not connected to municipal wastewater collection and treatment systems. They serve about 25% of the total population in the United States from an estimated 26 million homes, businesses, and recreational facilities nationwide. There is currently no adequate coordinated information management system for on-site WWTFs. Given the increasing concern about environmental contamination and its effect on public health, it is necessary to provide a more adequate management tool for on-site WWTFs information. This paper presents the development of an integrated, GIS-based, on-site wastewater information management system, which includes three components: (1) a mobile GIS for field data collection; (2) a World Wide Web (WWW) interface for electronic submission of individual WWTF information to a centralized GIS database in a state department of public health or state environmental protection agency; and (3) a GIS for the display and management of on-site WWTFs information, along with other spatial information such as land use, soil types, streams, and topography. It is anticipated that this GIS-based on-site wastewater information management system will provide environmental protection agencies and public health organizations with a spatial framework for managing on-site WWTFs and assessing the risks related to surface discharges.
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Sanchez, Marla C., Richard E. Brown, Carrie Webber e Gregory K. Homan. "Savings estimates for the United States Environmental Protection Agency's ENERGY STAR voluntary product labeling program". Energy Policy 36, n. 6 (giugno 2008): 2098–108. http://dx.doi.org/10.1016/j.enpol.2008.02.021.
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Guo, Ying, Steven J. Laux, Melissa Burdier, Peng Gao, Lena Q. Ma e Timothy G. Townsend. "Polycyclic aromatic hydrocarbons in processed yard trash". Waste Management & Research 38, n. 8 (28 maggio 2020): 825–30. http://dx.doi.org/10.1177/0734242x20925154.
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This work examines polycyclic aromatic hydrocarbon (PAH) concentrations in yard trash at various stages of the yard trash management cycle of collection, stockpiling, grinding and screening into mulch, and composting. Total extractable PAH concentrations were measured in yard trash at various management stages from 10 locations in Florida. The concentrations of 16 PAH compounds in processed yard trash ranged from 0.38 to 14 mg kg-1. PAH concentrations were detected in vegetative material harvested from a residential neighborhood, but were below the United States Environmental Protection Agency residential regional screening levels (RSLs). PAH concentrations near or above the RSLs were common in both unprocessed and processed yard trash collected at waste management facilities. PAH concentrations were amongst the highest in newly ground yard trash samples and were amongst the lowest in composted yard trash samples. These findings are important because land application of some waste materials, such as construction and demolition debris fines and street sweepings, are sometimes limited due to PAH. If processed yard trash, which is commonly land applied in residential settings, possesses similar PAH concentrations, evaluation of current risk assessment practices for land-applied wastes may require further examination.
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Blette, Veronica. "Drinking water public right-to-know requirements in the United States". Journal of Water and Health 6, S1 (1 marzo 2008): 43–51. http://dx.doi.org/10.2166/wh.2008.031.
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The United States Environmental Protection Agency implements a national drinking-water program under the authority of the Federal Safe Drinking Water Act. Amendments to the Act in 1996 added new provisions to enhance consumer understanding of drinking-water issues. Notification requirements associated with annual consumer confidence reports, source water assessments and state compliance reports are intended to enhance the public's knowledge of the quality of their drinking water. Water utilities are also subject to public notification requirements to provide more timely information to consumers in response to violations of health standards. These right-to-know requirements are intended to build the public's confidence, but communicating with consumers can be challenging for both utility managers and government leaders. This paper discusses the need for timely communication, the challenge of providing information when there is uncertainty in the science and the importance of preparing to respond to critical incidents. Because surveys have shown that other members of the community may have better access to consumers or are more trusted, it is important for water utilities to establish relationships with the media and the local public health community.
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Farber, Daniel A. "Climate Policy and the United States System of Divided Powers: Dealing with Carbon Leakage and Regulatory Linkage". Transnational Environmental Law 3, n. 1 (23 settembre 2013): 31–55. http://dx.doi.org/10.1017/s2047102513000186.
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AbstractClimate change has pushed governmental authorities within the United States (US) into new routes of national and transnational policy-making. The normal route for national policy-making runs from Congress in setting policy, to the President in agency implementation, to judicial oversight and enforcement. When that route is blocked, however, federalism and the separation of powers provide some byways and detours that may still be used to make progress. State governments and the executive branch have moved into the breach left by congressional deadlock. In the absence of federal climate legislation or a formal treaty, however, constitutional challenges will predictably meet efforts to limit carbon leakage or to establish linkages between regulatory systems.These constitutional issues often involve corners of constitutional law such as foreign affairs, where doctrines are particularly murky. Solid arguments can be made in favour of state efforts to avoid leakage and create linkage, despite claims of discrimination against interstate commerce, extraterritoriality, and foreign affairs pre-emption. The Environmental Protection Agency has some statutory authority to deal with leakage, and the President seems to have authority to pursue linkage through executive agreement. Thus, both states and the executive branch should have room to deal with transboundary implications of climate policies. Although the deadlock in Congress regarding climate change may be unusually severe, these modes of response may also be important for other kinds of transnational activity by US state governments and the national executive.
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Bąk, Joanna. "Modelling the relationship between LID practices and the runoff of rainwater through the example of rainfall data for Krakow". E3S Web of Conferences 45 (2018): 00008. http://dx.doi.org/10.1051/e3sconf/20184500008.
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The progressing process of urbanization causes areas that were once previously green to turn into areas with a high rate of runoff. For this reason, all activities aimed at the alternative management of rainwater in the city are extremely important. The aim of the work is to compare the share of rainwater management in urban catchments to various alternative forms of management of these waters (including rain gardens and green roofs). The paper compares the outflows from the sample catchment with different runoff coefficients and after the implementation of various Low Impact Development (LID) practices to the catchment. The calculations were carried out using the Storm Water Management Model (SWMM) program version 5.1.012 with LID controls developed by the United States Environmental Protection Agency (US EPA). The rainfall data used to carry out the simulation was derived over the last three years from the meteorological station in Krakow.
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Riebau, Allen R., e Douglas Fox. "The new smoke management". International Journal of Wildland Fire 10, n. 4 (2001): 415. http://dx.doi.org/10.1071/wf01039.
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This paper was presented at the conference ‘Integrating spatial technologies and ecological principles for a new age in fire management’, Boise, Idaho, USA, June 1999 The United States Environmental Protection Agency (EPA) will implement new regulations for the management of atmospheric particulate matter 2.5 µm and less in diameter (PM2.5), tropospheric ozone, and regional haze in the next few years. These three air quality issues relate directly to forest and agriculture burning. Fire generates PM2.5 and ozone precursor gases that reduce visibility. Hence, wild and agricultural land managers will be subject to these air quality regulations much as industrial and mobile sources have been for the past 25 years. In addition, these new regulations come at a time when private as well as public land managers throughout the United States are developing plans to increase their application of fire as a management tool. Prescribed fire will remain viable as a tool for land managers with these new regulations but only under a responsible smoke management paradigm. This paradigm will include formal ‘state-approved’ Smoke Management Programs and will require the use of new and ‘approved’ technologies that have been subjected to public and stakeholder scrutiny as regulatory tools. These programs will acknowledge that wildland fire is different from conventional human-caused air pollution sources. They will recognize that the managed use of fire is a superior option to wildfire from public safety and health perspectives. But they will also require greater utilization of non-burning alternatives in all circumstances, especially where fire is used for economic rather than ecological reasons. Through better smoke management and greater use of non-burning alternatives, steadily reduced smoke emissions will likely result.
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Tager, Edward, Salah-Eddine Naoushi, Wahib Arairo, Marianne Saba e Makram El Bachawati. "Aspen Plus designing and optimizing the hospital wastewater treatment by wet air oxidation method". E3S Web of Conferences 436 (2023): 10012. http://dx.doi.org/10.1051/e3sconf/202343610012.
Testo completoAbstract (sommario):
Healthcare establishments, pharma industries, and medical laboratories generate various waste materials, collectively called hospital or healthcare waste. Waste management regulations differ depending on the laws and acts adopted by the authorities and their level of compliance. For instance, in the United States of America, hospitals follow the rules set by the Environmental Protection Agency. In Europe, hospitals adhere to guidelines and standards set by the European Environmental Agency, while globally, the World Health Organization has established standardized policies and regulations. As a result, waste treatment technologies have become more prevalent for making medical waste non-infectious. These treatments include thermal treatment using microwave technologies (e.g., Wet air oxidation), steam sterilization, electro-pyrolysis, and chemical and mechanical systems. This research aims to model the treatment of hospital wastewater by wet air oxidation method using Aspen Plus for the first time in Lebanon. The simulation showed that the reaction conversion yield for thiols or mercaptans was 89.7% and 83.8% for sodium hydrosulfide, and the COD and BOD5 levels were reduced by 79.1% and 88%, respectively.
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Bhat, Abhishek S., e Ashok Kumar. "Application of the United States environmental protection agency's AERSCREEN to the air quality problems". Environmental Progress & Sustainable Energy 30, n. 2 (18 maggio 2011): 135–40. http://dx.doi.org/10.1002/ep.10569.
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Bursić, Vojislava, Gorica Vuković, Magdalena Cara, Marija Kostić, Tijana Stojanović, Aleksandra Petrović, Nikola Puvača, Dušan Marinković e Bojan Konstantinović. "Plant Protection Products Residues Assessment in the Organic and Conventional Agricultural Production". Sustainability 13, n. 3 (21 gennaio 2021): 1075. http://dx.doi.org/10.3390/su13031075.
Testo completoAbstract (sommario):
The organic food is progressively enticing purchasers’ attention, as it is recognized to be better than the food produced by the conventional agriculture and more sustainable for the natural environment. Pesticides and their metabolites can enter the human body via food and water. In the food production, over 60 thousand chemical agents are applied, while 90% of the harmful substances are consumed. The organic production is based on the qualitative and healthy food using the natural resources in an ecologically sustainable way. The European Regulations set the maximum pesticide levels (MRLs) in the organic products, which are also regulated by The United States Department of Agriculture in their National program supported by The United States Environmental Protection Agency. It is imperative to bear in mind that in the products from the organic production, the multiple detections cannot be tolerated, i.e., that one product cannot contain more than two detected pesticide residues. In this paper, a multi-residue pesticide method has been developed to determine the pesticides in the agricultural products from the organic and conventional production. In this work, 60 pesticides were analyzed using a simple QuEChERS sample preparation procedure, followed by LC-MS/MS. The tomato, potato, apple, and carrot samples from the organic and conventional products were collected from the market and the pesticide residues assessment comparing the organic to the conventional was done.
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Basra, Komal, Madeleine K. Scammell, Eugene B. Benson e Wendy Heiger-Bernays. "Ambient Air Exposure to PCBs: Regulation and Monitoring at Five Contaminated Sites in EPA Regions 1, 2, 4, and 5". NEW SOLUTIONS: A Journal of Environmental and Occupational Health Policy 28, n. 2 (20 marzo 2018): 262–82. http://dx.doi.org/10.1177/1048291118763620.
Testo completoAbstract (sommario):
Existing regulations seek to protect the public from exposure to polychlorinated biphenyls (PCBs) in food, water, and soil. Exposure to PCBs in ambient air has recently been given explicit consideration in the human health risk assessments that form the basis of risk management decisions at contaminated sites. The objective of this paper is to examine how ambient air exposure to PCBs is regulated and monitored at five contaminated sites in the United States. We reviewed online accessible materials (including Environmental Protection Agency-site specific websites, data repositories, and other agency websites). Results indicate that the five sites vary in regard to the measured PCB concentrations in air, the sampling and monitoring methodologies, and the established site-specific guidelines/standards and their basis. We conclude that current practices may not adequately protect those living or working near these sites from airborne PCB exposure and that regulations should include recognition of exposure to indoor sources.
31
Weintraub, June M. "Improving Cryptosporidium testing methods: a public health perspective". Journal of Water and Health 4, S1 (1 luglio 2006): 23–26. http://dx.doi.org/10.2166/wh.2006.0040.
Testo completoAbstract (sommario):
Cryptosporidium is a protozoan parasite found in surface waters throughout the United States. Waterborne cryptosporidiosis outbreaks may be associated with contaminated drinking water supplies. The approved method, USEPA (United States Environmental Protection Agency) Method 1623, for testing for the presence of Cryptosporidium in United States surface waters has several limitations. Firstly, recovery efficiency varies widely. Secondly, Method 1623 does not specify a mechanism for assessing the viability and infectivity of oocysts detected, or the Cryptosporidium species of the oocysts. Lastly, there are logistical limitations which are relevant to Method 1623 in particular, and to the state of the science of Cryptosporidium testing in general. Methods that give specific results more quickly, with higher recoveries and better consistency must be developed and made accessible for utilities to use. Improved Cryptosporidium testing methods can minimize uncertainty; this, in turn, will simplify the risk communication task, and the level of trust which the public has in the water utility can be maintained and improved. This paper reviews the current and ongoing research on analytical, monitoring, and sampling methods for Cryptosporidium, and identifies the needs that should be considered in future research.
32
Ndlovu, F. P. "The marine environment and ballast water management law". Water Policy 18, n. 4 (15 marzo 2016): 964–82. http://dx.doi.org/10.2166/wp.2016.105.
Testo completoAbstract (sommario):
This article contains a study of international and national measures dealing with the potential threat of pollution and the introduction of alien species that may come from the discharge of improperly treated ballast water. Ballast water management policy, law and coastal biosecurity strategies are considered. There are challenges to achieving the ideals of ballast water laws, as correctly pointed out by President Denholm of the Baltic and International Maritime Council (BIMCO), such as the cost of achieving these measures in today's economic climate; however, this article emphasizes the long-term effects of ignoring proper ballast water management. This article encourages a sustained commitment to strategies aimed at dealing with pollution and the harm that may be caused by marine invasive species that often find their way around the world as a result of ballast water discharges. With the imminent implementation of international law on ballast water and a federal court of appeals in the United States ordering the Environmental Protection Agency (EPA) to rewrite a portion of its ballast water dumping rules, ballast water policy justly deserves unrelenting global attention.
33
Mohammad, Norsyazwani, Emilia Zainal Abidin, Vivien How, Sarva Mangala Praveena e Zailina Hashim. "Pesticide management approach towards protecting the safety and health of farmers in Southeast Asia". Reviews on Environmental Health 33, n. 2 (27 giugno 2018): 123–34. http://dx.doi.org/10.1515/reveh-2017-0019.
Testo completoAbstract (sommario):
Abstract Background: It is estimated that pesticide production and use have increased continuously in the countries of Southeast Asia in recent years. Within the context of protecting the safety and health of workers in the agricultural sector, there is an existing gap in the implementation of the pesticide management framework because safety and health effects arising from occupational exposures continue to be reported. Objective: This study aims to provide narrative similarities, differences and weaknesses of the existing pesticide management system in Southeast Asian countries (Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, Philippines, Singapore, Thailand and Vietnam) within the context of occupational safety and health. Methods: This is preliminary traditional review study. Pesticide regulation and management at the country level were identified using web-based search engines such as Scopus, ScienceDirect, PubMed and Google. Book, reports, legislation document and other documents retrieved were also gathered from international organizations and specific websites of governmental agency in Southeast Asian countries. The scope of this review is only limited to literature written in English. In total, 44 review articles, reports and documents were gathered for this study. The approach of pesticide management in protecting safety and health in the agricultural setting were benchmarked according to the elements introduced by the United States Environmental Protection Agency, namely, (1) the protection of workers and (2) the practice of safety. Results: All countries have assigned a local authority and government organization to manage and control pesticide use in the agricultural sector. The countries with the highest usage of pesticide are Thailand, Philippines and Malaysia. Most Southeast Asian countries have emphasized safety practice in the management of pesticide usage, but there were less emphasis on the element of protection of workers within the framework in Indonesia, Myanmar, Thailand and Vietnam. Conclusion: The governing bodies in the countries of Southeast Asia have placed significant effort to develop framework related to pesticide management at the country level. The implementation of pesticide management based on the existing framework is evident in most of the countries but needs to be improved. It is suggested that emphasis be given to the implementation of diagnosis, health surveillance and reporting system as well as following or adopting standard guidelines for the protection of workers in terms of safety and health in the agricultural sector.
34
Blanchard, Charles L., e George M. Hidy. "Ozone response to emission reductions in the southeastern United States". Atmospheric Chemistry and Physics 18, n. 11 (13 giugno 2018): 8183–202. http://dx.doi.org/10.5194/acp-18-8183-2018.
Testo completoAbstract (sommario):
Abstract. Ozone (O3) formation in the southeastern US is studied in relation to nitrogen oxide (NOx) emissions using long-term (1990s–2015) surface measurements of the Southeastern Aerosol Research and Characterization (SEARCH) network, U.S. Environmental Protection Agency (EPA) O3 measurements, and EPA Clean Air Status and Trends Network (CASTNET) nitrate deposition data. Annual fourth-highest daily peak 8 h O3 mixing ratios at EPA monitoring sites in Georgia, Alabama, and Mississippi exhibit statistically significant (p < 0.0001) linear correlations with annual NOx emissions in those states between 1996 and 2015. The annual fourth-highest daily peak 8 h O3 mixing ratios declined toward values of ∼ 45–50 ppbv and monthly O3 maxima decreased at rates averaging ∼ 1–1.5 ppbv yr−1. Mean annual total oxidized nitrogen (NOy) mixing ratios at SEARCH sites declined in proportion to NOx emission reductions. CASTNET data show declining wet and dry nitrate deposition since the late 1990s, with total (wet plus dry) nitrate deposition fluxes decreasing linearly in proportion to reductions of NOx emissions by ∼ 60 % in Alabama and Georgia. Annual nitrate deposition rates at Georgia and Alabama CASTNET sites correspond to 30 % of Georgia emission rates and 36 % of Alabama emission rates, respectively. The fraction of NOx emissions lost to deposition has not changed. SEARCH and CASTNET sites exhibit downward trends in mean annual nitric acid (HNO3) concentrations. Observed relationships of O3 to NOz (NOy–NOx) support past model predictions of increases in cycling of NO and increasing responsiveness of O3 to NOx. The study data provide a long-term record that can be used to examine the accuracy of process relationships embedded in modeling efforts. Quantifying observed O3 trends and relating them to reductions in ambient NOy species concentrations offers key insights into processes of general relevance to air quality management and provides important information supporting strategies for reducing O3 mixing ratios.
35
Darlington, Molly, Jordan D. Reinders, Amit Sethi, Albert L. Lu, Partha Ramaseshadri, Joshua R. Fischer, Chad J. Boeckman et al. "RNAi for Western Corn Rootworm Management: Lessons Learned, Challenges, and Future Directions". Insects 13, n. 1 (5 gennaio 2022): 57. http://dx.doi.org/10.3390/insects13010057.
Testo completoAbstract (sommario):
The western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte, is considered one of the most economically important pests of maize (Zea mays L.) in the United States (U.S.) Corn Belt with costs of management and yield losses exceeding USD ~1–2 billion annually. WCR management has proven challenging given the ability of this insect to evolve resistance to multiple management strategies including synthetic insecticides, cultural practices, and plant-incorporated protectants, generating a constant need to develop new management tools. One of the most recent developments is maize expressing double-stranded hairpin RNA structures targeting housekeeping genes, which triggers an RNA interference (RNAi) response and eventually leads to insect death. Following the first description of in planta RNAi in 2007, traits targeting multiple genes have been explored. In June 2017, the U.S. Environmental Protection Agency approved the first in planta RNAi product against insects for commercial use. This product expresses a dsRNA targeting the WCR snf7 gene in combination with Bt proteins (Cry3Bb1 and Cry34Ab1/Cry35Ab1) to improve trait durability and will be introduced for commercial use in 2022.
36
McNitt, Jan, e Ron Kepford. "Developing a new regulatory paradigm to address the impacts of diffuse pollution attributable to agriculture". Water Science and Technology 39, n. 12 (1 giugno 1999): 299–305. http://dx.doi.org/10.2166/wst.1999.0559.
Testo completoAbstract (sommario):
To control pollution attributable to livestock operations, the statutory and regulatory scheme of the US Clean Water Act focuses on implementing structural controls to contain animal waste. While the United States Environmental Protection Agency (USEPA) is empowered only to regulate point sources, existing authority may be extended to regulate diffuse runoff associated with certain livestock facilities. Current water pollution abatement programs, however, have not responded to the differences inherent in diffuse pollution and the land management strategies necessary to control and abate its impacts. The Planned Intervention Micro-watershed Approach (PIMA) recognizes this distinction, offering a method of refining land management strategies while keeping existing point source pollution regulation and enforcement mechanisms in place. Within a limited time frame, producers have flexibility to develop and implement cost-effective management practices that achieve environmental goals. Planned intervention is integrated with a micro-watershed approach to watershed management which uses small, hydrologically discrete areas to target diffuse pollution sources and direct intervention efforts. This approach utilizes local stakeholder input and participation to create a bottom-up, community-based institutional framework for addressing diffuse pollution from agricultural sources that satisfies water quality objectives.
37
Hayes, Miles O., Jacqueline Michel e Todd M. Montello. "THE REACH SENSITIVITY INDEX (RSI) FOR MAPPING RIVERS AND STREAMS". International Oil Spill Conference Proceedings 1997, n. 1 (1 aprile 1997): 343–50. http://dx.doi.org/10.7901/2169-3358-1997-1-343.
Testo completoAbstract (sommario):
ABSTRACT Strategies for identifying and protecting sensitive inland areas under U.S. Environmental Protection Agency (USEPA) management have focused on major rivers and have built on the Environmental Sensitivity Index (ESI) approach developed by the National Oceanic and Atmospheric Administration (NOAA) for marine environments. A watershed approach has been refined and applied to smaller rivers and streams in the southeastern United States. Existing standardized river classification schemes did not adequately address oil spill response issues. Thus a new stream reach sensitivity scheme was developed, based on (1) the degree of difficulty anticipated for the containment and recovery of spilled oil, and (2) the sensitivity and vulnerability of associated wetlands. This scheme considered the following factors: navigability, water flow patterns, stream size, occurrence of suitable collection points inherent in the stream type, and channel leakage and bifurcation. A reach sensitivity index (RSI) was prototyped using streams in South Carolina, and then was applied to the Leaf River watershed in Mississippi. The RSI is on a scale of 1 to 10. The final atlas and digital product are maps at a scale of 1:100,000 showing the RSI, sensitive biological and human use resources, and potential access and collection points.
38
Hafizza Mohd Amran, Nurul, Mohd Khairul Amri Kamarudin, Noorjima Abd Wahab, Muhammad Hafiz Md Saad, Mohd Hafiz Rosli, Mohd Armi Abu Samah, Nor Bakhiah Baharim, Nurul Asma Ezzatee Mohd Razak e Syazni Jusoh. "Environmental Management on Natural River Based on Water Quality Deterioration in Terengganu River Basin, Terengganu, Malaysia". International Journal of Engineering & Technology 7, n. 4.34 (13 dicembre 2018): 132. http://dx.doi.org/10.14419/ijet.v7i4.34.23844.
Testo completoAbstract (sommario):
This study is aimed to look at the level of water quality deterioration in Terengganu River Basin. Environmental management studies on the deterioration of water quality in Terengganu River Basin have been using data collection and analysis methods. The Gravimetric method was used to analysis the TSS measured in mg/L. 250 ml water samples was needed for each study area (each station). All preparation and preservation of the samples are in accordance with standard procedures provided by the American Public Health Society (APHA) and United States Environmental Protection Agency (USEPA). The results show that Terengganu River Basin is classified in level III that is contaminated. The Terengganu River Basin is contaminated at the downstream to the middle of the river due to anthropogenic activity. Moreover, the results indicate that the amount of AN and TSS is higher and is a major contributor to the deterioration of water quality in the Terengganu River Basin. Management of water resources should be improved and noted. This study has proposed several steps in managing water resources such as settlement of land use solutions, regulatory methods, river quality monitoring programs, minimizing waste, wall construction, the use of Geographic Information System (GIS) and legislative measures.
39
Čampara, Leo, Vlado Frančić, Lovro Maglić e Nermin Hasanspahić. "Overview and Comparison of the IMO and the US Maritime Administration Ballast Water Management Regulations". Journal of Marine Science and Engineering 7, n. 9 (22 agosto 2019): 283. http://dx.doi.org/10.3390/jmse7090283.
Testo completoAbstract (sommario):
Along with the International Maritime Organization (IMO), the United States Maritime Administration has developed its own ballast water management legislation under the dual authority of the US Coast Guard and the Environmental Protection Agency. The IMO and US ballast water management regulations are globally recognized as the most significant and influential regimes. Complexity and certain regulatory differences pose considerable concern amongst all stakeholders in the shipping industry, predominantly ship owners and ship operators. This paper presents a conceptual study which overviews, emphasises, and compares key provisions of these two sets of regulations by targeting and unveiling significant points from their perspective since they represent the largest group of stakeholders. Therefore, the paper aims to support shipowners and operators in better understanding the Ballast Water Management regulations and their differences. In addition, the study may benefit in choosing an adequate ballast water treatment system to be installed onboard ships, considering the sea areas where ships intend to operate. Finally, the paper can also help policy makers understand those differences that could present a major barrier in the efficient and smooth ballast water management implementation.
40
Chen, Wenjie, Guoru Huang e Han Zhang. "Urban stormwater inundation simulation based on SWMM and diffusive overland-flow model". Water Science and Technology 76, n. 12 (25 settembre 2017): 3392–403. http://dx.doi.org/10.2166/wst.2017.504.
Testo completoAbstract (sommario):
Abstract With rapid urbanization, inundation-induced property losses have become more and more severe. Urban inundation modeling is an effective way to reduce these losses. This paper introduces a simplified urban stormwater inundation simulation model based on the United States Environmental Protection Agency Storm Water Management Model (SWMM) and a geographic information system (GIS)-based diffusive overland-flow model. SWMM is applied for computation of flows in storm sewer systems and flooding flows at junctions, while the GIS-based diffusive overland-flow model simulates surface runoff and inundation. One observed rainfall scenario on Haidian Island, Hainan Province, China was chosen to calibrate the model and the other two were used for validation. Comparisons of the model results with field-surveyed data and InfoWorks ICM (Integrated Catchment Modeling) modeled results indicated the inundation model in this paper can provide inundation extents and reasonable inundation depths even in a large study area.
41
Huber, W. C., W. J. Wells, I. K. Besaw e M. A. Leisenring. "Hydrologic regionalisation impacts on wet-weather control selection". Water Science and Technology 54, n. 6-7 (1 settembre 2006): 485–92. http://dx.doi.org/10.2166/wst.2006.604.
Testo completoAbstract (sommario):
Continuous simulation is performed using the US Environmental Protection Agency (USEPA) Storm Water Management Model (SWMM) to evaluate regional differences around the United States in hydrologic and water quality performance of wet-weather controls. Controls are characterised as being limited by peak inflow rate (i.e. any device with little or no storage, such as screens, filters and some proprietary devices) or by storage capacity (e.g. ponds, tanks). For flow-limited devices, results are presented in the form of percentage of annual runoff volume captured (passing through the device) for a given inflow capacity. For storage-limited devices, results are presented in two forms: percentage of annual runoff volume captured as a function of unit basin size and drawdown (drain) time, and as a percentage of total suspended solids captured, for the same two variables. Regional differences are apparent, driven mainly by variations in rainfall patterns around the country.
42
Torbitt, Alison, e Richard Hildreth. "International Treaties and U.S. Laws as Tools to Regulate the Greenhouse Gas Emissions from Ships and Ports". International Journal of Marine and Coastal Law 25, n. 3 (2010): 347–76. http://dx.doi.org/10.1163/157180810x516999.
Testo completoAbstract (sommario):
AbstractRegulations on marine greenhouse gas emissions are possible, and some are in progress, using international treaty law and federal regulations. Under the United Nations Convention on the Law of the Sea (LOSC), port and coastal States have jurisdiction over ships entering their waters and have the ability to implement mitigation strategies, ranging from mandatory speed reduction to installing shore-side electricity or sequestration equipment. Under the International Convention for the Prevention of Pollution from Ships (MARPOL) Annex VI, the International Maritime Organization (IMO) is determining the feasibility of design, fuel, and operation reforms. Alternatively, the implementation may be usurped by a global cap-and-trade scheme from the United Nations Framework Convention on Climate Change. In the U.S., the Environmental Protection Agency (EPA) is tightening the Clean Air Act § 213 regulations governing marine vessels and U.S. waters were recently designated a SOx Emission Control Area. However, carbon dioxide emissions from marine vessels remain unregulated.
43
Lee, Si Duk. "Risk Assessment and Risk Management of Noncriteria Pollutants". Toxicology and Industrial Health 6, n. 5 (ottobre 1990): 245–55. http://dx.doi.org/10.1177/074823379000600519.
Testo completoAbstract (sommario):
Noncriteria air pollutants are synonymous with hazardous air pollutants (HAPs), air toxics or toxic air pollutants (TAPs). The term noncriteria pollutants refers to all air pollutants except for the criteria pollutants (SOx, PM, NOx, CO, O3, and Pb). Air toxics are pervasive in our environment worldwide in varying degrees. Uses of these chemicals are varied and numerous; their emissions are ubiquitous, and they include organic compounds such as chlorinated hydrocarbons, dioxins, aldehydes, polynuclear aromatic hydrocarbons, and heavy metals such as chromium, nickel, cadmium, and mercury. There are more than 70,000 chemicals that are in use commercially in the United States, and we know relatively little about their ambient concentrations, persistence, transport and transformation as well as their effects on health and the environment, many of which take decades to emerge. The United States Environmental Protection Agency, under the authority of Section 112 of the Clean Air Act, is mandated to regulate any air pollutant which, in the Administrator's judgment, “causes, or contributes to, air pollution which may reasonably be anticipated to result in an increase in serious irreversible or incapacitating reversible illness.” For such regulatory decision-making, EPA's Office of Health and Environmental Assessment (OHEA) provides scientific assessment of health effects for potentially hazardous air pollutants. In accordance with risk assessment guidelines developed by OHEA over the years, Health Assessment Documents (HADs) containing risk assessment information were prepared and were subjected to critical review and careful revision to produce Final Draft HADs which serve as scientific databases for regulatory decision-making by the Office of Air Quality Planning and Standards (OAQPS) in its risk management process. EPA developed databases such as the Integrated Risk Information System (IRIS) and the National Air Toxics Information Clearinghouse (NATICH) and a technical assistance response system called the Air Risk Information Support Center (AIR RISC), in addition, to help in implementation of the National Air Toxics Program by state and local regulators.
44
Schindel, Geary M., Rudolph Rosen e Graham M. Schindel. "Recommended Planning and Response for Hazardous Material Releases in Karst Terrains". Environmental & Engineering Geoscience 29, n. 3 (1 agosto 2023): 183–90. http://dx.doi.org/10.21663/eeg-d-22-00083.
Testo completoAbstract (sommario):
Abstract In the United States, as much as 20 percent of the land surface is considered karst, and 40 percent of the groundwater for municipal and domestic consumption comes from karst aquifers. The U.S. Environmental Protection Agency has recognized karst aquifers as the groundwater type most vulnerable to contamination from anthropogenic sources, including hazardous materials and other pollutants. This paper presents a series of recommendations to assist first responders, water resource managers, and community leaders during a hazardous materials release in karst terrains. Hazardous materials releases have the potential to adversely impact human health and the environment. Karst aquifers are noted for rapid and direct recharge through caves, sinkholes, and sinking streams; groundwater velocities can exceed 1 km per day and are often complex and poorly understood. Best management practices in karst include pre-event planning, response, remediation, and long-term monitoring for hazardous materials releases.
45
Balkrishna, Acharya, Shalini Mishra e Maneesha Rana. "Effect of Coliform Bacteria on Various Environmental Factors: A Review". International Journal of Health Sciences and Research 14, n. 5 (13 maggio 2024): 279–92. http://dx.doi.org/10.52403/ijhsr.20240537.
Testo completoAbstract (sommario):
Sewage sludge is a mud-like residue generated from wastewater treatment that contains pollutants such as heavy metals, fecal coliforms, Escherichia coli, Salmonella, and other harmful bacteria. Coliform bacteria are rod-shaped Gram-negative non-spore forming motile or non-motile bacteria that may ferment lactose with the production of acid and gas when grown at 35-37°C. The presence of coliform bacteria in sludge is a serious problem for both human health ranging from mild gastrointestinal complaints to more severe illnesses and, environmental safety. Controlling coliform bacteria demands proper sludge management, treatment, and disposal. Appropriate treatment processes, such as aerobic digestion and composting, can reduce the number of coliform bacteria in sludge. Several nanoparticles, including silver nanoparticles (AgNPs), titanium dioxide nanoparticles (TiO2NPs), and copper nanoparticles (CuNPs), play a significant role as anti-microbial agents and may be effective in the disinfection of E. coli. The United States Environmental Protection Agency (EPA) has set regulations governing the maximum allowable number of coliform bacteria in sludge. This review provides an overview of the origins of coliform bacteria in sludge, their health concerns, strategies for identification, and various degradation techniques along with their limitations. Key words: Coliform, Environment, Regulatory bodies, Degradation, Nanotechnology.
46
Bai, Yiran, Yuhong Li, Ruoyu Zhang, Na Zhao e Xiaofan Zeng. "Comprehensive Performance Evaluation System Based on Environmental and Economic Benefits for Optimal Allocation of LID Facilities". Water 11, n. 2 (18 febbraio 2019): 341. http://dx.doi.org/10.3390/w11020341.
Testo completoAbstract (sommario):
In recent years, urban flooding occurred frequently because of extreme rainstorms. Sponge city construction can effectively mitigate urban flooding and improve urban rainwater utilization. Low-impact development (LID) is regarded as a sustainable solution for urban stormwater management. In this project, a comprehensive evaluation system was developed based on environmental and economic benefits using the analytical hierarchy process (AHP) and the Storm Water Management Model (SWMM) of the United States (US) Environmental Protection Agency (EPA). The performance of four LID scenarios with the same locations but different sizes of green roof, permeable pavement, concave greenbelt, and rain garden were analyzed in the Sucheng district of Jiangsu province in China. Results illustrate that the green roof performed best in reducing runoff, while the rain garden performed worst. The LID combination scenario (1) that contained more green roof, permeable pavement, and concave greenbelt facilities, but fewer rain gardens had the better comprehensive performance on the basis of environmental and economic benefits. The combined scenario (2) (LID proportion of maximum construction area was 40%) could also be an alternative. This study provides a guide to optimize LID layouts for sponge city construction, which can also provide optimal selection for other sponge city constructions.
47
Adu-Boahen, Kofi, Isaac Boateng, Emmanuel Yeboah Okyere e Sender Kyeremeh. "An assessment of water quality and the locals' perception of coastal lagoon pollution in ghana: A case study of chemu lagoon in tema". Asian Review of Environmental and Earth Sciences 10, n. 1 (31 gennaio 2023): 28–39. http://dx.doi.org/10.20448/arees.v10i1.4440.
Testo completoAbstract (sommario):
The Chemu lagoon is not immune to pollution through chemical waste contamination, refuse disposals, and untreated household sewage, and hence has been chosen as a case study. This paper aims to assess the lagoon's level of pollution. Chemical analysis of water samples, field observations, and a structured survey questionnaire was used to assess the state of the lagoon. The study revealed that the Chemu lagoon has inferior water quality as most of the parameters evaluated were above the acceptable standards of the United States Environmental Protection Agency (USEPA). Significant differences in concentrations of water quality parameters were established between seasons. The study found that respondents were aware of the lagoon’s polluted state and attributed pollution to siltation and waste dumping. This leads to offensive odour, livelihood losses emphasising a reduction in fishing activities, and outbreaks of diseases in the area. Conclusively, stakeholders have not prioritised mitigating pollution of the lagoon. The study recommends that the Environmental Health and Waste Management Departments of the Tema Metropolitan Assembly intensify house-to-house hygiene education and sanitary inspection in the area. There should be education and sensitisation on proper waste management practices in the area.
48
Liang, Changmei, Xiang Zhang, Jun Xia, Jing Xu e Dunxian She. "The Effect of Sponge City Construction for Reducing Directly Connected Impervious Areas on Hydrological Responses at the Urban Catchment Scale". Water 12, n. 4 (18 aprile 2020): 1163. http://dx.doi.org/10.3390/w12041163.
Testo completoAbstract (sommario):
Low-impact development (LID) has been widely used at both site-specific and local scales to try and mitigate the impact of urban stormwater runoff caused by increasing impervious urban areas. Recently, the concept of a “sponge city” was proposed by the Chinese government, which includes LID controls at the source, a pipe drainage system midway, and a drainage system for excess stormwater at the terminal. There is a need to evaluate the effectiveness of sponge city construction at the large urban catchment scale, particularly with different spatial distributions of LIDs that reduce directly connected impervious areas (DCIAs). In this paper, the performances of five design scenarios with different spatial distributions but same sizes of LID controls at the urban catchment scale were analyzed using a geographic information system (GIS) of the United States Environmental Systems Research Institute (ESRI)—based Storm Water Management Model (SWMM) of the United States Environmental Protection Agency (USEPA) and MIKE 11 of Danish Hydraulic Institute (DHI) in Xining City, China. Results confirmed the effectiveness of sponge city construction in reducing the urban stormwater runoff. The hydrological performance reduction was positively correlated and linearly dependent on DCIA reduction. Peak flow reduction was most sensitive to DCIA reduction, followed by runoff volume and peak time. As rainfall intensity increased, the hydrological performance was more sensitive to rainfall intensity than DCIA reduction. Results of this study provide new insights for stormwater managers to implement LID more effectively at the urban catchment scale.
49
Lindstrom, K. P., e Adriana Renescu. "Pollution prevention: a winning strategy for the protection of the environment". Water Science and Technology 30, n. 5 (1 settembre 1994): 195–202. http://dx.doi.org/10.2166/wst.1994.0238.
Testo completoAbstract (sommario):
This case study presents the development and implementation of the County Sanitation Districts of Orange County (Districts) Pollution Prevention Program (P3) aimed at reducing the environmental release of pollutants. The P3 has been integrated in the Districts' environmental management program and incorporates the goals of the Districts' 30-year Master Plan called 2020 Vision. The Districts take a multi-media approach to environmental protection giving equal importance to emissions to air, water or the land. The Districts' P3 efforts, applied in combination with an aggressive Source Control Program, has resulted in significant reductions in heavy metals and other pollutant discharges to the environment. The P3 is a major element of the Districts' Source Control Program. During the past seven years, pollution prevention (the management of waste generation or reduction of waste before it is generated) has proven to be the most effective strategy to protect the environment. The Program has resulted in reductions in influent loadings of heavy metals and other pollutants of concern, and an improving record of compliance by major industrial dischargers. The reduction in metals and other pollutants has resulted in quantifiable improvements in environmental conditions in the marine environment (in the vicinity of the discharge) several miles offshore near the ocean outfall, in reduced air emissions from the treatment plants, and in the concentrations of heavy metals in the residual biosolids produced for recycling. Long-term monitoring data shows improvements in effluent toxicity (as measured by fish survival), reductions in the concentrations of metals in sediments around the ocean outfall and long-term gradual improvements in biological conditions as measured by the number of species of benthic invertebrates. Data on the trends for each of these and other conditions, are presented along with the specific methods employed to achieve the reductions from industrial dischargers. The successes of P3 were acknowledged by the United States Environmental Protection Agency (EPA), which awarded the Districts the Administrator's national 1992 Pollution Prevention Achievement Award.
50
Jiang, Wenbin, Lu Lin, Xuesong Xu, Huiyao Wang e Pei Xu. "Analysis of Regulatory Framework for Produced Water Management and Reuse in Major Oil- and Gas-Producing Regions in the United States". Water 14, n. 14 (8 luglio 2022): 2162. http://dx.doi.org/10.3390/w14142162.
Testo completoAbstract (sommario):
The rapid development of unconventional oil and gas (O&G) extraction around the world produces a significant amount of wastewater that requires appropriate management and disposal. Produced water (PW) is primarily disposed of through saltwater disposal wells, and other reuse/disposal methods include using PW for hydraulic fracturing, enhanced oil recovery, well drilling, evaporation ponds or seepage pits within the O&G field, and transferring PW offsite for management or reuse. Currently, 1–2% of PW in the U.S. is used outside the O&G field after treatment. With the considerable interest in PW reuse to reduce environmental implications and alleviate regional water scarcity, it is imperative to analyze the current regulatory framework for PW management and reuse. In the U.S., PW is subject to a complex set of federal, state, and sometimes local regulations to address the wide range of PW management, construction, and operation practices. Under the supervision of the U.S. Environment Protection Agency (U.S. EPA), different states have their own regulatory agencies and requirements based on state-specific practices and laws. This study analyzed the regulatory framework in major O&G-producing regions surrounding the management of PW, including relevant laws and jurisdictional illustrations of water rules and responsibilities, water quality standards, and PW disposal and current/potential beneficial reuse up to early 2022. The selected eastern states (based on the 98th meridian designated by the U.S. EPA as a tool to separate discharge permitting) include the Appalachian Basin (Marcellus and Utica shale areas of Pennsylvania, Ohio, and West Virginia), Oklahoma, and Texas; and the western states include California, Colorado, New Mexico, and Wyoming. These regions represent different regulations; climates; water quantities; quality diversities; and geologic, geographic, and hydrologic conditions. This review is particularly focused on the water quality standards, reuse practices and scenarios, risks assessment, knowledge gaps, and research needs for the potential reuse of treated PW outside of O&G fields. Given the complexity surrounding PW regulations and rules, this study is intended as preliminary guidance for PW management, and for identifying the knowledge gaps and research needs to reduce the potential impacts of treated PW reuse on the environment and public health. The regulations and experiences learned from these case studies would significantly benefit other states and countries with O&G sources for the protection of their environment and public health.