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own. Nitrate has been released and has infiltrated vertically down to the water table to point E. Indicate on Figure 1 the path that the nitrate is expected to take and where will it discharge back to the ground surface[1]? What will be the estimated time of travel of nitrate in the groundwater (assume it travels at the same velocity as water)?

own. Nitrate has been released and has infiltrated vertically down to the water table to point E. Indicate on Figure 1 the path that the nitrate is expected to take and where will it discharge back to the ground surface[1]? What will be the estimated time of travel of nitrate in the groundwater (assume it travels at the same velocity as water)?

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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A manure pile is located in the upland area shown. Nitrate has been released and has infiltrated vertically down to the water table to point E. Indicate on Figure 1 the path that the nitrate is expected to take and where will it discharge back to the ground surface[1]? What will be the estimated time of travel of nitrate in the groundwater (assume it travels at the same velocity as water)?

Hydraulic gradient = -0.03, porosity - 0.3 and K = 1/mday

You are asked to site a monitoring well at location D to detect the nitrate before it reaches the protected wetland. How deep below the ground will you need to drill the well? Plot this well in Figure 1 and indicate the location of the screen. 

 

Porosity n = 0.3 Hydraulic conductivity, K = 1 m/day protected wetlands h=90m C 50 B water table h-100m 100 DISTANCE (m) contaminated site E 150 A B h=120m h-110m 150 100 50 200 ELEVATION (m a.s.)
Transcribed Image Text:Porosity n = 0.3 Hydraulic conductivity, K = 1 m/day protected wetlands h=90m C 50 B water table h-100m 100 DISTANCE (m) contaminated site E 150 A B h=120m h-110m 150 100 50 200 ELEVATION (m a.s.)
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