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Abstract

Dumping sites or landfills are considered as foremost common option of waste management worldwide. Dumping sites, often not lined, represent a potential environmental issue causing a long-term risk to the environment and health. A number of computers model-based studies have described the solid waste collection and its management, but provide little information about the relative contributions regarding environmental impacts of landfilling especially in the context of developing world. The aim of study was to estimate environmental impacts from dumping site by using EASEWASTE model. A case study was carried out at an old and closed dumping site filled with mixed waste without bottom liner, no leachate collection and gas collection. On the basis of the existing dumping site investigation, a Mahmood Booti Dumping Site Scenario was developed, and related data of waste generation & composition was collected and added to assess environmental impacts. The results show that human toxicity via soil (9.14E+09 m3 soil) had the highest potential impact, followed by global warming (8.83E+11 Kg CO2-eq), eco-toxicity in water (6.25E+11 m3 water), and eco-toxicity in soil (6.54E+10 m3 soil). This is mostly caused by leaching of heavy metals from ashes (e.g. residues from roads cleaning and vacuum cleaning bags), batteries, paper and metals. The adopted risk analysis approach uses easily accessible computer aided models, for open dumping sites, appears to be a key tool to assist decision makers in establishing priorities for remediation action.
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Authors and Affiliations

Asifa Alam
1
Muhammad Nawaz Chaudhry
2
Sajid Rashid Ahmad
3
Aadila Batool
3
Adeel Mahmood
4
Huda Ahmad Al-Ghamdi
5

  1. College of Earth and Environmental Sciences, University of the Punjab, Pakistan
  2. Department of Environmental Science and Policy, Lahore School of Economics, Pakistan
  3. Remote Sensing, GIS and Climatic Research Lab, Department of Space Sciences, University of the Punjab, Pakistan
  4. Department of Environmental Sciences, Government College Women University, Sialkot, Pakistan
  5. Department of Biology, College of Sciences, King Khalid University, Abha, Saudi Arabia
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Abstract

Environmental risk assessment is one of the key tools in environmental engineering. This risk assessment can be qualitative or quantitative and it is based on preliminary studies i.e., baseline study for waste disposal sites. Even though the literature exists on baseline study in general, still there is a lack of guidance regarding development of a site-specific baseline study model for a waste disposal site. This study has two-fold aim, firstly, how to develop site-specific baseline study model for a selected dumping site, and secondly, how this site-specific baseline study can support the environmental engineering via mathematical risk estimation. Mahmood Booti Open Dumping Site (MBODS) is selected to demonstrate the development and application of site-specific baseline study model. This is followed by building a framework that shows how the output of the baseline study can lead to environmental engineering via mathematical risk estimation. The paper provides a mechanism of how to construct a bespoke baseline-study model that is readily useable, avoiding procurement of expensive computer software and yet smoothly connecting with the follow-on stages of the risk assessment. The work presented in this paper can be reproduced repeatedly to create site-specific baseline study models for risk assessment of other waste disposal sites in a cost-effective, consistent and cohesive manner.
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Authors and Affiliations

Asifa Alam
1
Adeel Mahmood
2
M. Nawaz Chaudhry
3
Sajid Rashid Ahmad
1
Noor Ul Safa
2
Huda Ahmed Alghamdi
4
Heba Waheeb Alhamdi
4
Rizwan Ullah
5

  1. College of Earth and Environmental Sciences, University of the Punjab Lahore, Pakistan
  2. Department of Environmental Sciences, GC Women University Sialkot, Pakistan
  3. Lahore Schools of Economics, Lahore, Pakistan
  4. Department of Biology, College of Sciences, King Khalid University, Abha 61413, Saudi Arabia
  5. Department of Zoology, Mirpur University of Science of Technology (MUST), Mirpur Azad Kashmir, Pakistan

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