What is the water source for groundwater recharge? 2. A. Suppose we have a closed aquifer at a depth of 500-550 ft. A bottled water company is draining the aquifer at a rate of 0.5 ft/yr. Low permeability (1 ft/yr) rocks (e.g. shales) are present from the surface to a depth of 500 ft. How many years will it take until all of the water is gone from this aquifer (assuming no recharge)? (show your work and units)_ B. Suppose this company operated for that many years (answer 2. A. above). How long will it take for the aquifer to recharge (presuming it doesn't collapse as water is drained)? (show your work and units)_ C. What might be an option for the water company to allow it to keep operating past the time in "A"? D. List an advantage (or advertising claim) that the water company could claim, presuming that "B" is true: 3. A. How is an open aquifer recharged? (what process) B. Suppose this aquifer had 500 ft. of sandstone above it which has high permeability (rate of 10ft/yr). If someone spilled a chemical on the surface, is this aquifer at risk, and in how many years? (show work and units for calculations) 4. If you were told that an aquifer had a recharge zone that was far away (horizontally) from the aquifer, what type of aquifer would it be? 5. What is a risk that would ered an aquifer's use caused by rates of discharge that exceed rates of recharge? It is especially common in sediments (unconsolidated material), but could also happen in rocks? 6. What is the name of the line separating the unsaturated vs. saturated zones in groundwater? 7. What does it mean for groundwater to be unsaturated with respect water quantity? (use terminology learned in this course) 8. A. A well gets its water from which zone (from Q.6)? B. Why there and not the other zone?
What is the water source for groundwater recharge? 2. A. Suppose we have a closed aquifer at a depth of 500-550 ft. A bottled water company is draining the aquifer at a rate of 0.5 ft/yr. Low permeability (1 ft/yr) rocks (e.g. shales) are present from the surface to a depth of 500 ft. How many years will it take until all of the water is gone from this aquifer (assuming no recharge)? (show your work and units)_ B. Suppose this company operated for that many years (answer 2. A. above). How long will it take for the aquifer to recharge (presuming it doesn't collapse as water is drained)? (show your work and units)_ C. What might be an option for the water company to allow it to keep operating past the time in "A"? D. List an advantage (or advertising claim) that the water company could claim, presuming that "B" is true: 3. A. How is an open aquifer recharged? (what process) B. Suppose this aquifer had 500 ft. of sandstone above it which has high permeability (rate of 10ft/yr). If someone spilled a chemical on the surface, is this aquifer at risk, and in how many years? (show work and units for calculations) 4. If you were told that an aquifer had a recharge zone that was far away (horizontally) from the aquifer, what type of aquifer would it be? 5. What is a risk that would ered an aquifer's use caused by rates of discharge that exceed rates of recharge? It is especially common in sediments (unconsolidated material), but could also happen in rocks? 6. What is the name of the line separating the unsaturated vs. saturated zones in groundwater? 7. What does it mean for groundwater to be unsaturated with respect water quantity? (use terminology learned in this course) 8. A. A well gets its water from which zone (from Q.6)? B. Why there and not the other zone?
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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Solve the questions or answer to the best of your ability pls show work for them
Transcribed Image Text:What is the water source for groundwater recharge?
2. A. Suppose we have a closed aquifer at a depth of 500-550 ft. A bottled water company is draining the
aquifer at a rate of 0.5 ft/yr. Low permeability (1 ft/yr) rocks (e.g. shales) are present from the surface to a
depth of 500 ft. How many years will it take until all of the water is gone from this aquifer (assuming no
recharge)?
(show your work and units)_
B. Suppose this company operated for that many years (answer 2. A. above). How long will it take for the
aquifer to recharge (presuming it doesn't collapse as water is drained)?
(show your work and units)_
C. What might be an option for the water company to allow it to keep operating past the time in "A"?
D. List an advantage (or advertising claim) that the water company could claim, presuming that "B" is
true:
3. A. How is an open aquifer recharged? (what process)
B. Suppose this aquifer had 500 ft. of sandstone above it which has high permeability (rate of 10ft/yr). If
someone spilled a chemical on the surface, is this aquifer at risk, and in how many years? (show work
and units for calculations)
4. If you were told that an aquifer had a recharge zone that was far away (horizontally) from the aquifer, what
type of aquifer would it be?
5. What is a risk that would ered an aquifer's use caused by rates of discharge that exceed rates of
recharge? It is especially common in sediments (unconsolidated material), but could also happen in rocks?
6. What is the name of the line separating the unsaturated vs. saturated zones in groundwater?
7. What does it mean for groundwater to be unsaturated with respect water quantity? (use terminology
learned in this course)
8. A. A well gets its water from which zone (from Q.6)?
B. Why there and not the other zone?
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