Development of a conceptual framework of holistic risk assessment — Landfill as a particular type of contaminated land

Butt, Talib E.; Nunns, M. A.; Beal, Cara

doi:10.1016/j.scitotenv.2016.04.152

Cited by 25 publications

(13 citation statements)

References 7 publications

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“…Bjerg et al, 2011;Butt et al, 2008). Butt et al (2016) presented a conceptual framework for a holistic risk assessment of landfills. The fundamental and initial stage of any risk assessment is the baseline study including geology, hydrology, hydrogeology, topography, meteorology, geography, human influences and site management (Butt et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Development of a high-resolution 3D geological model for landfill leachate risk assessment

Høyer

Klint

Fiandaca

et al. 2019

Engineering Geology

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Groundwater protection and risk assessment of contaminated sites (e.g. abandoned landfills, industrial waste facilities, gasoline stations, and dry cleaners) situated in complex glacial landscapes are extremely challenging. A common method to assess the risks for leakage and contamination of groundwater and surface water is to develop hydraulic models. However, reliable models need to contain information about both the three-dimensional (3D) distribution of the deposits and their hydraulic properties. Environmental risk assessments therefore require highly detailed digital 3D geological models. In order to construct models with this degree of detail, dense data coverage with high-quality data is necessary. Many studies rely of few data sources, resulting in relatively sparse data. In this study we demonstrate how 6 different data sources can be combined to gain new insight on the geological history, which is central to the subsequent 3D geological modelling. The analyses in this study include (i) geomorphology, (ii) spear-auger mapping and near-surface electromagnetic induction data, (iii) borehole analyses, (iv) geoelectrical profiling, and (v) transient electromagnetic measurements. The study area is located on the island of Samsø, in the central part of Denmark, where a digital 3D geological model is constructed. The model consists of combined layer and voxel models and covers a small area (~ 1 km 2) surrounding a former landfill (Pillemark). The near-surface geology is characterized by a deadice landscape formed by glaciers during the Weichselian ice-age. By interpreting the new data it has been possible to update and revise the geological history, which was used during the development of a highly detailed 3D geological model. This model was constructed combining layers and voxels in order to better represent the complex geology and incorporate all the details provided by the different data sources. The novel geological understanding was used to update the risk assessment of the Pillemark landfill, where a remedial pumping today is ongoing. The immediate risk is related to the migration of landfill leachate downgradient through a lacustrine sandy aquifer and wetlands. Groundwater used for drinking water purposes is abstracted from an underlying sand and gravel aquifer (Tebbestrup formation), which is protected by a clay till (mid Danish till) found in the entire Pillemark area. A vertical hydraulic gradient from the upper to the lower aquifer indicates groundwater flow. However, the actual impact of landfill on the deeper aquifer has to be assessed by a detailed evaluation of the drainage system, pumping schemes and groundwater quality in the 3 area. The 3D geological model is an important step toward the development of a groundwater flow model, required in order to establish a water balance for the hydrogeological system and estimate the vertical transport.

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Section: Introductionmentioning

confidence: 99%

Development of a high-resolution 3D geological model for landfill leachate risk assessment

Høyer

Klint

Fiandaca

et al. 2019

Engineering Geology

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“…Due to the role of water in the circulation of chemical components between different elements of the environment, the analysis covered also the contamination of water with trace elements, in particular with heavy metals. Metals in groundwater can occur due to penetration of pesticides and mineral fertilizers used in crop fields, but can also get from leachates from landfills and from industrial and municipal wastewater [16][17]19]. The concentration of heavy metals in groundwater near the industrial waste landfill in Zgierz is shown in Figures 6-9.…”

Section: Resultsmentioning

confidence: 99%

“…The scope of the monitoring was specified by numerous regulations defining its area as well as method and frequency. All these efforts are aimed at protecting the environment and, consequently, human health [18][19][20].…”

Section: Discussionmentioning

confidence: 99%

Assessment of the Monitoring of an Industrial Waste Landfill

Janas

Zawadzka

2018

Ecological Chemistry and Engineering S

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Industrial waste deposited in landfills poses a threat to the environment and can cause its deterioration. The physical and chemical processes that result in the formation of a number of harmful substances occur in the mass of stored waste. When released to the environment these compounds can be dangerous to all its elements, especially to groundwater. The monitoring of landfill impact plays an important role in assessing the state of the environment. It allows us to follow what changes take place in the waste bed itself, and in particular elements of the environment. On the basis of long-term monitoring studies (conducted in the years 1995-2016), the quality of groundwater around the industrial waste landfill in Zgierz was determined and its impact on the environment was characterized. The quality of conducted monitoring was assessed in relation to the current regulations. Analysis of the results of groundwater quality tests confirms that the industrial landfill in the operational phase due to a number of applied security measures has not contributed to the deterioration of groundwater quality. In the post-operational phase, groundwater contamination is observed, and consequently irreversible changes occur in the environment. The negative impact of the landfill can be due to the disruption of sealing layers and elution of pollutants from the waste by rainwater. The landfill site monitoring plays a key role in assessing causal relationships occurring between the state of the landfill and elements of the environment in its vicinity.

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“…This was due to the fact that the variables related to this parameter commonly trigger severe damage to humans and the environment within the watersheds. Such affectations are described in detail in Araiza [46] and Butt et al [60]. They are even often referred to as risks associated with MSW management.…”

Section: Comments About Parameter and Variable Weightsmentioning

confidence: 99%

Prioritization and Analysis of Watershed: A Study Applied to Municipal Solid Waste

et al. 2021

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This paper shows a watershed prioritization analysis applied to municipal solid waste. The study area was the macrowatershed “Cañón del Sumidero”, in the state of Chiapas, Mexico. Geographic information systems, multi-criteria evaluation techniques, as well as several geomorphometric, land use, vegetation and waste management variables were used. The results indicate that, of the set of watersheds analyzed (4 subwatersheds and 80 microwatersheds), only 14 (2 subwatersheds and 12 microwatersheds) have high priority, since they are severely affected by the mismanagement of solid waste. This is also due to the major presence of urban settlements, which are places with different dynamics in terms of population growth, migration, as well as access to infrastructure and services, such as collection and final disposal of waste. Additionally, the incidence of certain biophysical and geomorphometric variables, such as steep slopes, high rainfall and high drainage density, among others, exacerbate the waste-related problems. The remaining watersheds (2 subwatersheds and 68 microwatersheds) showed moderate or low prioritization values because of the low amount of solid waste produced there. Finally, this work concludes that the regionalization of municipalities and the management of solid waste through decentralized operating agencies can help solve solid waste management problems since this approach would permit to delegate non-primary activities from watershed operating agencies to other specialized waste agencies.

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Development of a conceptual framework of holistic risk assessment — Landfill as a particular type of contaminated land

Cited by 25 publications

References 7 publications

Development of a high-resolution 3D geological model for landfill leachate risk assessment

Development of a high-resolution 3D geological model for landfill leachate risk assessment

Assessment of the Monitoring of an Industrial Waste Landfill

Prioritization and Analysis of Watershed: A Study Applied to Municipal Solid Waste

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