Impact of Waste Disposal Site On Groundwater Quality at Rafin-Tofa Dumpsite, Kampala, Niger State, Nigeria

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@article{1710557,
      author = {Shehu Atabo Ibrahim},
      title = {Impact of Waste Disposal Site On Groundwater Quality at Rafin-Tofa Dumpsite, Kampala, Niger State, Nigeria},
      journal = {Iconic Research And Engineering Journals},
      year = {2025},
      volume = {9},
      number = {3},
      pages = {1581-1602},
      issn = {2456-8880},
      url = {https://www.irejournals.com/formatedpaper/1710557.pdf},
      abstract = {The impact of waste disposal site on groundwater quality at Rafin-Tofa dumpsite, Kampala, Niger State, Nigeria was investigated using 2D Electrical Resistivity Imaging (ERI) and Vertical Electrical Sounding (VES). Resistivity data were collected from parallel survey of 9 profile lines at the dumpsite and 3 control profile lines using a Wenner-Alpha array configuration. The 2-D results revealed three distinct lithology which includes topsoil, weathered basement and fresh basement. The topsoil comprises of clay, lateritic soil, and peat/clay materials. The 2-D resistivity values 2.31-40.0 ?m at profile distance 0.0-100 m at the depths 1.25-12.4 m across various profiles were interpreted as contaminated zone which also correspond to VES 5, 6, 8 and 9. High resistivity values range  from 889-7823.4 ?m at the depth 7-14.5 m correspond to VES results at profiles 1,2,3,4 and 7 was interpreted as weathered basement rock. The 2-D results of the control sites which constitute profiles 10, 11 and 12 revealed the resistivity values that range from 88.2-482 ?m  from profiles distance 0.0-100 m at the depth of 1.25- 19.8 m across various profiles was interpreted as weathered rock which is free from contamination. The results of the control sites indicate that the layer is underlain by clay lithology. The 2-D ERI and VES sections of the model resolved clearly the subsurface lithological variations. Interpretation of the field data showed that 2-D ERI and VES techniques were effective in delineating groundwater contaminated zones. The vertical and horizontal sensitivity of the 2-D Wenner-Alpha array for sub- surface resistivity variations made it possible to determine the position and extent of leachate infiltration into groundwater. It can be deduced from 2-D and VES results that the area associated with low resistivity is prone to leachate penetration and as such hand dug well is not safe for consumption. Level of leachate contamination of the subsurface was observed on the entire sites at varying depths. The impact of waste disposal site is that; the study was able to delineate the depth of the contamination of the area to be at 9.25 m. This depth indicates that any borehole to be drilled at that area must be beyond the depth of 10.00 m to avoid infiltration 0f contaminant to the water.},
      month = {September},
      doi = {https://doi.org/10.64388/IREV9I3-1710557-5123}
  }