Risk Assessment of Mining Environmental Liabilities for Their Categorization and Prioritization in Gold-Mining Areas of Ecuador

Mining environmental liabilities (MEL) are of great concern because of potential risks to ecosystems and human health. In this research, the environmental risk (RI) related to MEL existing in three artisanal and small-scale gold-mining areas of Ecuador was evaluated. For this purpose, data of 167 ME...

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Veröffentlicht in:Sustainability 2022-05, Vol.14 (10), p.6089
Hauptverfasser: Salgado-Almeida, Bryan, Falquez-Torres, Daniel A., Romero-Crespo, Paola L., Valverde-Armas, Priscila E., Guzmán-Martínez, Fredy, Jiménez-Oyola, Samantha
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container_end_page
container_issue 10
container_start_page 6089
container_title Sustainability
container_volume 14
creator Salgado-Almeida, Bryan
Falquez-Torres, Daniel A.
Romero-Crespo, Paola L.
Valverde-Armas, Priscila E.
Guzmán-Martínez, Fredy
Jiménez-Oyola, Samantha
description Mining environmental liabilities (MEL) are of great concern because of potential risks to ecosystems and human health. In this research, the environmental risk (RI) related to MEL existing in three artisanal and small-scale gold-mining areas of Ecuador was evaluated. For this purpose, data of 167 MEL including landfills, mining galleries, tailing deposits, and mineral processing plants from Macuchi, Tenguel–Ponce Enriquez, and Puyango mining areas, were analyzed. The risk assessment related to the presence of waste deposits was carried out based on the methodology proposed by the Spanish Geological Survey. Moreover, the procedure outlined in the Environmental Risk Assessment Guide of the Ministry of Environment of Peru for nonwaste deposits was applied. The highest RI values were identified in Puyango and Tenguel–Ponce Enriquez. Thus, they were both categorized as priority control areas requiring intervention and rehabilitation plans. The MEL that require a high level of intervention include waste deposits and mine entrances associated with potentially toxic elements. Moreover, the point risk maps showed that rivers in the studied areas have a potential pollution risk. This study provides risk levels associated with MEL in mining areas from Ecuador. This information could be used for environmental management and pollution mitigation.
doi_str_mv 10.3390/su14106089
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source MDPI - Multidisciplinary Digital Publishing Institute; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals
subjects Acid mine drainage
Deposits
Ecosystems
Environmental assessment
Environmental health
Environmental liability
Environmental management
Environmental risk
Geological surveys
Geology
Gold
Gold mines & mining
Landfills
Mineral processing
Mitigation
Pollution
Pollution control
Population
Rehabilitation
Risk analysis
Risk assessment
Risk levels
River ecology
Sediments
Sustainability
Waste disposal sites
title Risk Assessment of Mining Environmental Liabilities for Their Categorization and Prioritization in Gold-Mining Areas of Ecuador
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