A small water treatment plant (WTP) is pumping groundwater for further treatment for drinking water supply. The pumping rate is 150 gallons per minute (gpm). The aquifer has a thickness of 20 m, with an intrinsic permeability of 4 x 10-8 m2 and hydraulic gradient of 0.004 in the flow direction (from east to west). Assume that the aquifer is homogeneous and isotropic, in an infinite flow domain, and that the groundwater has a constant temperature of 10 . Recently, MTBE has been detected in the WTP’s influent water. Which of the following gas stations may be a possible source of contamination? Station A: 50 m west and 50 m south to the WTP. Station B: 500 m east and 300 m north to the WTP. Station C: 1000 m east and 500 m north to the WTP. Station D: 5000 m east and 800 m south to the WTP.
A small water treatment plant (WTP) is pumping groundwater for further treatment for drinking water supply. The pumping rate is 150 gallons per minute (gpm). The aquifer has a thickness of 20 m, with an intrinsic permeability of 4 x 10-8 m2 and hydraulic gradient of 0.004 in the flow direction (from east to west). Assume that the aquifer is homogeneous and isotropic, in an infinite flow domain, and that the groundwater has a constant temperature of 10 . Recently, MTBE has been detected in the WTP’s influent water. Which of the following gas stations may be a possible source of contamination? Station A: 50 m west and 50 m south to the WTP. Station B: 500 m east and 300 m north to the WTP. Station C: 1000 m east and 500 m north to the WTP. Station D: 5000 m east and 800 m south to the WTP.
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A small water treatment plant (WTP) is pumping groundwater for further treatment for drinking water supply. The pumping rate is 150 gallons per minute (gpm). The aquifer has a thickness of 20 m, with an intrinsic permeability of 4 x 10-8 m2 and hydraulic gradient of 0.004 in the flow direction (from east to west). Assume that the aquifer is homogeneous and isotropic, in an infinite flow domain, and that the groundwater has a constant temperature of 10 . Recently, MTBE has been detected in the WTP’s influent water. Which of the following gas stations may be a possible source of contamination?
- Station A: 50 m west and 50 m south to the WTP.
- Station B: 500 m east and 300 m north to the WTP.
- Station C: 1000 m east and 500 m north to the WTP.
- Station D: 5000 m east and 800 m south to the WTP.
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