CO₂ Leakage-Induced Contamination in Shallow Potable Aquifer and Associated Health Risk Assessment

Figure 3

Conceptual model representing the shallow potable aquifer with a length and thickness of 200 m and 40 m, respectively. Blue arrows represent ambient groundwater flow with the rate of 2 cm/day. The grid blocks with the purple color stand for constant pressure boundaries; left and right boundary are 3.2 MPa and 2.8 MPa, respectively. Both upper and lower boundaries are assumed to be the no-flow boundary. CO₂ leakage point (red) is located at 50 m away from the left boundary. In addition, the municipal well (green) located at 50 m away from the right boundary penetrates 30 m deep from the upper seal while the pumping activity was only conducted through the screened section.