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dc.contributor.authorScekic, Sandra
dc.date.accessioned2023-06-22T11:03:59Z
dc.date.available2023-06-22T11:03:59Z
dc.date.issued2023-06-22
dc.identifier.urihttps://hdl.handle.net/2077/77319
dc.description.abstractConstruction companies in the modern era consider all things, from the precise measurement and placement of the poles to the finishing touches of the facade. Before the commencement of construction work, environmental consultants sample the soil, including soil properties and hazardous contaminants. In part, this is to minimise economic hazards due to unexpected costs regarding the removal of soils, that are not technically appropriate, and reduce the risks of unexpected exposure to harmful substances during the construction process. Methane, CH4, is found in nature as it is formed by the decomposition of organic material. The gas is light, allowing it to migrate underground or accumulate in pockets depending on the soil properties and their compositions. When reaching concentrations of 5–15%, the gas is combustible and flammable (CIRIA, 2006). Throughout history, methane gas has been the cause of accidents and fatalities as it has not been adequately acknowledged. In addition to explosions, the gas can intoxicate workers if they inhale excessively (Wisconsin Department of Health Service, n.d.). The purpose of this thesis is to determine whether methane gas concentration should be considered prior to and throughout construction work. The method is a combined approach of fieldwork, literature study and an interview. The fieldwork took place throughout Gothenburg to measure methane gas concentration and water level in groundwater monitoring wells. Gas concentrations were taken at a parking lot, an industrial area, an old landfill, old properties and a gas station. Previous reports from WSP, a consultant and advisory company in community development, provided information about the soil and its sequence for each location. Results from the fieldwork show that CH4 concentrations are 0.0% or 0.1% in regions with clay, man-made ground and gravelly sand. The areas with higher CH4 concentrations consist of sediments that have been deposited in fluvial environments.en
dc.language.isoengen
dc.relation.ispartofseriesB1230en
dc.subjectMethaneen
dc.subjectConstructionen
dc.subjectMethane migrationen
dc.subjectRemediationen
dc.subjectSoil propertiesen
dc.titleRisks of underground methane gas in construction projects. A survey on methane gas concentration in Gothenburg, Swedenen
dc.contributor.departmentUniversity of Gothenburg/Department of Earth Scienceseng
dc.contributor.departmentGöteborgs universitet/Institutionen för geovetenskaperswe


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