Assume a chemical solvent, which is denser than water is spilled into the reservoir. How many days will it take for the contaminant to reach the observation well assuming only advection occurs in the aquifer? The stratum has a hydraulic conductivity of 4 x 10-2 cm/sec The silty sand in the aquifer has a void ratio of 0.75. el. 167.3 m Reservoir p Clay Silty sand Observation well Clay 256 m el. 165.0 m 2 m

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Groundwater Flow

The term groundwater refers to the water which is found beneath the earth's surface. Pores present in the soil and rocks with fractures make a passage for rainwater to enter the earth's surface and deposit as groundwater. The flow nature and direction of groundwater under the earth's surface directly impacts the strength and compressibility of the soil, which reflects its ability to support structural loads.