Effect of an Active Open Dumpsite on the Earth’s Subsurface and Groundwater Resource

Abstract

An electrical resistivity survey was carried out at a dumpsite and controlled station located about 200m away from the dumpsite to assess the vertical extent of leachate contamination of the dumpsite and its impact on the soil and groundwater resources. Subsurface resistivity of the dumpsite and the controlled stations were examined, which reflects the subsurface soil tolerance and the impact of the vertical extent of leachate contamination on the subsurface. The leachate infiltration may reflect the state and the quality of the groundwater. This implies that leachates from the dumpsite must have also migrated into the aquifer system, thereby contaminating the water-bearing unit.

Investigation of groundwater vulnerability to open dumpsites and its potential risk using electrical resistivity and water analysis

“…3 ), which implies that the groundwater systems and the subsoil are heavily impacted by the dumpsite leachates [ 2 ]. [ 42 ] noted that the dumpsite leachates released into the environment hardly remain at the surface, but seeped down the soil to the water-bearing unit. The weathered unit resistivity values were found within the range of 2.9 Ωm – 19 Ωm, while fractured unit resistivity varies between 67 Ωm and 444 Ωm, which grossly contradicted the ambient resistivity values compiled in Table 2 .…”

“…Most African countries are usually hot, especially Northern Nigeria, where the daytime temperatures alternate between 24 °C and 38 °C annually, as it is related to the meteorological conditions, and this can influence the character of dumpsite leachate [ 2 , 42 ]. Therefore, the characteristics of the landfills located in such difficult terrain are mainly affected by the meteorological conditions of the terrain, and the environmental impact may be difficult to predict.…”

“…These leachates are generally characterized by high chemical oxygen demand (COD) and biological oxygen demand (BOD) with unwanted substances such as inorganic and organic contaminants [ 48 , 49 ]. This is because, recent studies have also shown that climatic data such as wind, pressure and temperature, can influence and control the degree of heat and gas emission emerging from landfills [ 17 , 25 , 42 ]. The major four major categories of contaminants found in municipal dumpsite leachate are; inorganic compounds, organic contaminants and substrates, heavy metals, colour and total dissolved solids (TDS) [ 34 ], and they can be classified into three main groups as shown in Table 1 .…”

Delineation of Regional Aquifer Parameters for Groundwater Exploration at Kurna, Kano

“…However, the major challenges of surface water include unfavourable climate and pollution, which usually attributed to poor management of waste materials [5,6,7] and mining activities as well [8,9].…”

Modification of the Traditional Half Schlumberger Arrays and its Efficiency for Subsurface Exploration

“…However, electrical resistivity which appears to be the most common geophysics technique currently in use; involves the injecting of an electrical current into the ground through steel electrodes in an attempt to measure the electrical properties of the subsurface of the earth [7,21,22,23]. The Schlumberger array configuration of Vertical Electrical Sounding (VES) is one of the most commonly used techniques in the electrical resistivity survey due to its capacity to probe deeper when compared to the Wenner array [24,25].…”