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208 Cards in this Set
- Front
- Back
|
Which of the following are not part of the hydrologic cycle?
A. Evaporation B. Precipitation C. Transpiration D. Transportation |
D. Transportation |
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|
An impervious layer of material is made up of |
Rock and clay |
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|
Aquifers are generally classified as |
Water table and Artesian |
|
|
The most common means of recharging an aquifer is |
Percolation |
|
|
What is the most reasonable course of action against groundwater pollution? |
Prevention |
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|
What pollution is removed as groundwater travels through the soil? |
Suspended chemicals |
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|
Artesian wells originate from groundwater that is trapped between two? |
Impervious strata |
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|
Most aquifers occur in ____ and _____ formations. |
Sand and gravel |
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The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
The casing of a new well should extend at least _______ ft. above the well pad. |
12 inches |
|
|
The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
The casing of a new well should extend at least _______ ft. above the well pad. |
12 inches |
|
|
A new well shall be continuously pumped for 24 hours after the water level stabilizes at design capacity, then increased to 150% designed capacity for ______ hours? |
6 hours |
|
|
The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
The casing of a new well should extend at least _______ ft. above the well pad. |
12 inches |
|
|
A new well shall be continuously pumped for 24 hours after the water level stabilizes at design capacity, then increased to 150% designed capacity for ______ hours? |
6 hours |
|
|
When disinfecting a new well the chlorine dose should be |
50 mg/L |
|
|
The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
The casing of a new well should extend at least _______ ft. above the well pad. |
12 inches |
|
|
A new well shall be continuously pumped for 24 hours after the water level stabilizes at design capacity, then increased to 150% designed capacity for ______ hours? |
6 hours |
|
|
When disinfecting a new well the chlorine dose should be |
50 mg/L |
|
|
Most well pumps in a public water system are? |
Vertical turbine |
|
|
The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
The casing of a new well should extend at least _______ ft. above the well pad. |
12 inches |
|
|
A new well shall be continuously pumped for 24 hours after the water level stabilizes at design capacity, then increased to 150% designed capacity for ______ hours? |
6 hours |
|
|
When disinfecting a new well the chlorine dose should be |
50 mg/L |
|
|
Most well pumps in a public water system are? |
Vertical turbine |
|
|
The static level in a well is the static level when the well is ____ |
Not running or producing |
|
|
The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
The casing of a new well should extend at least _______ ft. above the well pad. |
12 inches |
|
|
A new well shall be continuously pumped for 24 hours after the water level stabilizes at design capacity, then increased to 150% designed capacity for ______ hours? |
6 hours |
|
|
When disinfecting a new well the chlorine dose should be |
50 mg/L |
|
|
Most well pumps in a public water system are? |
Vertical turbine |
|
|
The static level in a well is the static level when the well is ____ |
Not running or producing |
|
|
The specific capacity is expressed as a ratio of the yield, in terms of gallons per minute and ______. |
Drawdown |
|
|
The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
The casing of a new well should extend at least _______ ft. above the well pad. |
12 inches |
|
|
A new well shall be continuously pumped for 24 hours after the water level stabilizes at design capacity, then increased to 150% designed capacity for ______ hours? |
6 hours |
|
|
When disinfecting a new well the chlorine dose should be |
50 mg/L |
|
|
Most well pumps in a public water system are? |
Vertical turbine |
|
|
The static level in a well is the static level when the well is ____ |
Not running or producing |
|
|
The specific capacity is expressed as a ratio of the yield, in terms of gallons per minute and ______. |
Drawdown |
|
|
An airline is installed In a well to measure ______. |
Water levels |
|
|
The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
The casing of a new well should extend at least _______ ft. above the well pad. |
12 inches |
|
|
A new well shall be continuously pumped for 24 hours after the water level stabilizes at design capacity, then increased to 150% designed capacity for ______ hours? |
6 hours |
|
|
When disinfecting a new well the chlorine dose should be |
50 mg/L |
|
|
Most well pumps in a public water system are? |
Vertical turbine |
|
|
The static level in a well is the static level when the well is ____ |
Not running or producing |
|
|
The specific capacity is expressed as a ratio of the yield, in terms of gallons per minute and ______. |
Drawdown |
|
|
An airline is installed In a well to measure ______. |
Water levels |
|
|
The recovery rate of a well is measured in |
Feet rise per minute |
|
|
The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
The casing of a new well should extend at least _______ ft. above the well pad. |
12 inches |
|
|
A new well shall be continuously pumped for 24 hours after the water level stabilizes at design capacity, then increased to 150% designed capacity for ______ hours? |
6 hours |
|
|
When disinfecting a new well the chlorine dose should be |
50 mg/L |
|
|
Most well pumps in a public water system are? |
Vertical turbine |
|
|
The static level in a well is the static level when the well is ____ |
Not running or producing |
|
|
The specific capacity is expressed as a ratio of the yield, in terms of gallons per minute and ______. |
Drawdown |
|
|
An airline is installed In a well to measure ______. |
Water levels |
|
|
The recovery rate of a well is measured in |
Feet rise per minute |
|
|
One advantage of a gravel wall well is that it
A. Lowers the static level B. Cost less to construct C. Allows the use of large screen openings D. Raises the pumping level |
C. Allows the use of large screen openings |
|
|
The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
When should existing wells be disinfected? |
After well or pump repairs are made |
|
|
The casing of a new well should extend at least _______ ft. above the well pad. |
12 inches |
|
|
A new well shall be continuously pumped for 24 hours after the water level stabilizes at design capacity, then increased to 150% designed capacity for ______ hours? |
6 hours |
|
|
When disinfecting a new well the chlorine dose should be |
50 mg/L |
|
|
Most well pumps in a public water system are? |
Vertical turbine |
|
|
The static level in a well is the static level when the well is ____ |
Not running or producing |
|
|
The specific capacity is expressed as a ratio of the yield, in terms of gallons per minute and ______. |
Drawdown |
|
|
An airline is installed In a well to measure ______. |
Water levels |
|
|
The recovery rate of a well is measured in |
Feet rise per minute |
|
|
One advantage of a gravel wall well is that it
A. Lowers the static level B. Cost less to construct C. Allows the use of large screen openings D. Raises the pumping level |
C. Allows the use of large screen openings |
|
|
The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
When should existing wells be disinfected? |
After well or pump repairs are made |
|
|
Cement grouting of a well is to provide a _____ seal from contamination. |
Sanitary |
|
|
The casing of a new well should extend at least _______ ft. above the well pad. |
12 inches |
|
|
A new well shall be continuously pumped for 24 hours after the water level stabilizes at design capacity, then increased to 150% designed capacity for ______ hours? |
6 hours |
|
|
When disinfecting a new well the chlorine dose should be |
50 mg/L |
|
|
Most well pumps in a public water system are? |
Vertical turbine |
|
|
The static level in a well is the static level when the well is ____ |
Not running or producing |
|
|
The specific capacity is expressed as a ratio of the yield, in terms of gallons per minute and ______. |
Drawdown |
|
|
An airline is installed In a well to measure ______. |
Water levels |
|
|
The recovery rate of a well is measured in |
Feet rise per minute |
|
|
One advantage of a gravel wall well is that it
A. Lowers the static level B. Cost less to construct C. Allows the use of large screen openings D. Raises the pumping level |
C. Allows the use of large screen openings |
|
|
The minimum distance from a well to a potential pollution source should be at least |
200 feet |
|
|
When should existing wells be disinfected? |
After well or pump repairs are made |
|
|
Cement grouting of a well is to provide a _____ seal from contamination. |
Sanitary |
|
|
Line shaft bearing in a well can be lubricated with |
Water or oil |
|
|
The casing of a new well should extend at least _______ ft. above the well pad. |
12 inches |
|
|
A new well shall be continuously pumped for 24 hours after the water level stabilizes at design capacity, then increased to 150% designed capacity for ______ hours? |
6 hours |
|
|
When disinfecting a new well the chlorine dose should be |
50 mg/L |
|
|
Most well pumps in a public water system are? |
Vertical turbine |
|
|
The static level in a well is the static level when the well is ____ |
Not running or producing |
|
|
The specific capacity is expressed as a ratio of the yield, in terms of gallons per minute and ______. |
Drawdown |
|
|
An airline is installed In a well to measure ______. |
Water levels |
|
|
The recovery rate of a well is measured in |
Feet rise per minute |
|
|
One advantage of a gravel wall well is that it
A. Lowers the static level B. Cost less to construct C. Allows the use of large screen openings D. Raises the pumping level |
C. Allows the use of large screen openings |
|
|
Continuous slotted screens are the best choice because of the low ________ encountered. |
Friction loss |
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Continuous slotted screens are the best choice because of the low ________ encountered. |
Friction loss |
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The performance of a well can be determined by taking reading of the ________ conditions. |
Hydraulic |
|
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Continuous slotted screens are the best choice because of the low ________ encountered. |
Friction loss |
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The performance of a well can be determined by taking reading of the ________ conditions. |
Hydraulic |
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A good well _______ is essential for troubleshooting well operational problems. |
Operational log |
|
|
Continuous slotted screens are the best choice because of the low ________ encountered. |
Friction loss |
|
|
The performance of a well can be determined by taking reading of the ________ conditions. |
Hydraulic |
|
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A good well _______ is essential for troubleshooting well operational problems. |
Operational log |
|
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The most common cause of a clogged well screen are ______ and ________. |
Chemical scaling and lime encrustation |
|
|
Continuous slotted screens are the best choice because of the low ________ encountered. |
Friction loss |
|
|
The performance of a well can be determined by taking reading of the ________ conditions. |
Hydraulic |
|
|
A good well _______ is essential for troubleshooting well operational problems. |
Operational log |
|
|
The most common cause of a clogged well screen are ______ and ________. |
Chemical scaling and lime encrustation |
|
|
________ method of cleaning a well will clean all but the most severely scaled screens. |
Acidizing |
|
|
The most common cause of loss production from a well is |
Improper clearance between the impeller and the pump bowls due to wear |
|
|
The most common cause of loss production from a well is |
Improper clearance between the impeller and the pump bowls due to wear |
|
|
What information should be collected during a sanitary survey when pumps are off? |
Recovery rate |
|
|
The most common cause of loss production from a well is |
Improper clearance between the impeller and the pump bowls due to wear |
|
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What information should be collected during a sanitary survey when pumps are off? |
Recovery rate |
|
|
Staining problems from iron occur most in ______ water. |
Hard |
|
|
Gallionella or Crenothrix are |
Iron bacteria |
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When the static level of the ground water is 50ft below the ground surface, the most suitable type of pump is a |
Turbine pump |
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When the static level of the ground water is 50ft below the ground surface, the most suitable type of pump is a |
Turbine pump |
|
|
An objective feature of iron and manganese in water is |
Staining of fixtures |
|
|
Which source of water usually has more hard water? |
Well water |
|
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What causes "red water"? |
Iron bacteria |
|
|
What causes "red water"? |
Iron bacteria |
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Which of the following is found mainly in groundwater sources and forms a precipitate when oxidized? |
Iron |
|
|
What does the term surface runoff refer to? |
Water that flow into rivers after rainfall |
|
|
The amount of water in a water-bearing formation depends on the |
Porosity of the formation |
|
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The amount of water in a water-bearing formation depends on the |
Porosity of the formation |
|
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Amount of water a well will produce for each foot of drawdown |
Specific capacity |
|
|
The amount of water in a water-bearing formation depends on the |
Porosity of the formation |
|
|
Amount of water a well will produce for each foot of drawdown |
Specific capacity |
|
|
The most common type of well used for public water supply systems is a |
Drilled well |
|
|
Why is a well acidified? |
Increase the wells productivity |
|
|
What is the primary purpose of well grouting? |
Prevent surface water contamination from entering the water being drawn from the well |
|
|
What is the primary purpose of well grouting? |
Prevent surface water contamination from entering the water being drawn from the well |
|
|
If a confined aquifer's recharge is elevated, the water in the aquifer will be |
Under pressure |
|
|
What is the primary purpose of well grouting? |
Prevent surface water contamination from entering the water being drawn from the well |
|
|
If a confined aquifer's recharge is elevated, the water in the aquifer will be |
Under pressure |
|
|
The residual drawdown of a well is defined as |
Water level below the normal level that persists after a well pump has been off for a period of time |
|
|
What is the primary purpose of well grouting? |
Prevent surface water contamination from entering the water being drawn from the well |
|
|
If a confined aquifer's recharge is elevated, the water in the aquifer will be |
Under pressure |
|
|
The residual drawdown of a well is defined as |
Water level below the normal level that persists after a well pump has been off for a period of time |
|
|
A well produces 162 games. The drawdown is 16'. Calculate the specific yield in gpm/ft. |
10 gpm/ft |
|
|
What is the primary purpose of well grouting? |
Prevent surface water contamination from entering the water being drawn from the well |
|
|
If a confined aquifer's recharge is elevated, the water in the aquifer will be |
Under pressure |
|
|
The residual drawdown of a well is defined as |
Water level below the normal level that persists after a well pump has been off for a period of time |
|
|
A well produces 162 games. The drawdown is 16'. Calculate the specific yield in gpm/ft. |
10 gpm/ft |
|
|
Find the drawdown of a well, if the well yields 265 gpm and the specific yield is 11.7 gpm/ft. |
22.7' |
|
|
What is the primary purpose of well grouting? |
Prevent surface water contamination from entering the water being drawn from the well |
|
|
If a confined aquifer's recharge is elevated, the water in the aquifer will be |
Under pressure |
|
|
The residual drawdown of a well is defined as |
Water level below the normal level that persists after a well pump has been off for a period of time |
|
|
A well produces 162 games. The drawdown is 16'. Calculate the specific yield in gpm/ft. |
10 gpm/ft |
|
|
Find the drawdown of a well, if the well yields 265 gpm and the specific yield is 11.7 gpm/ft. |
22.7' |
|
|
The static water level in a well is 84.5'. The pumping level is 104.2'. What is the drawdown? |
19.7' |
|
|
The zone of influence is defined as the |
Distance from a well that the cone of depression affects the normal water table |
|
|
The zone of influence is defined as the |
Distance from a well that the cone of depression affects the normal water table |
|
|
What type of pump has high efficiencies (90 to 95%) at very high pressure, impellers that are very close fitting, and high maintenance cost? |
Vertical turbine |
|
|
The zone of influence is defined as the |
Distance from a well that the cone of depression affects the normal water table |
|
|
What type of pump has high efficiencies (90 to 95%) at very high pressure, impellers that are very close fitting, and high maintenance cost? |
Vertical turbine |
|
|
Which of the following is most likely a cause of decreasing drawdown and an unchanging static water level? |
Pump is losing efficiency |
|
|
The zone of influence is defined as the |
Distance from a well that the cone of depression affects the normal water table |
|
|
What type of pump has high efficiencies (90 to 95%) at very high pressure, impellers that are very close fitting, and high maintenance cost? |
Vertical turbine |
|
|
Which of the following is most likely a cause of decreasing drawdown and an unchanging static water level? |
Pump is losing efficiency |
|
|
Groundwater generally requires less treatment than surface water for |
Microorganisms |
|
|
The zone of influence is defined as the |
Distance from a well that the cone of depression affects the normal water table |
|
|
What type of pump has high efficiencies (90 to 95%) at very high pressure, impellers that are very close fitting, and high maintenance cost? |
Vertical turbine |
|
|
Which of the following is most likely a cause of decreasing drawdown and an unchanging static water level? |
Pump is losing efficiency |
|
|
Groundwater generally requires less treatment than surface water for |
Microorganisms |
|
|
The maximum contaminant level for turbidity in groundwater is |
5 NTU |
|
|
The zone of influence is defined as the |
Distance from a well that the cone of depression affects the normal water table |
|
|
What type of pump has high efficiencies (90 to 95%) at very high pressure, impellers that are very close fitting, and high maintenance cost? |
Vertical turbine |
|
|
Which of the following is most likely a cause of decreasing drawdown and an unchanging static water level? |
Pump is losing efficiency |
|
|
Groundwater generally requires less treatment than surface water for |
Microorganisms |
|
|
The maximum contaminant level for turbidity in groundwater is |
5 NTU |
|
|
How could you loosen encrustations on a well casing and well? |
Acid treatment |
|
|
The zone of influence is defined as the |
Distance from a well that the cone of depression affects the normal water table |
|
|
What type of pump has high efficiencies (90 to 95%) at very high pressure, impellers that are very close fitting, and high maintenance cost? |
Vertical turbine |
|
|
Which of the following is most likely a cause of decreasing drawdown and an unchanging static water level? |
Pump is losing efficiency |
|
|
Groundwater generally requires less treatment than surface water for |
Microorganisms |
|
|
The maximum contaminant level for turbidity in groundwater is |
5 NTU |
|
|
How could you loosen encrustations on a well casing and well? |
Acid treatment |
|
|
When a well requires treatment with chlorine, which type of chlorine is used? |
Liquid chlorine |
|
|
The zone of influence is defined as the |
Distance from a well that the cone of depression affects the normal water table |
|
|
What type of pump has high efficiencies (90 to 95%) at very high pressure, impellers that are very close fitting, and high maintenance cost? |
Vertical turbine |
|
|
Which of the following is most likely a cause of decreasing drawdown and an unchanging static water level? |
Pump is losing efficiency |
|
|
Groundwater generally requires less treatment than surface water for |
Microorganisms |
|
|
The maximum contaminant level for turbidity in groundwater is |
5 NTU |
|
|
How could you loosen encrustations on a well casing and well? |
Acid treatment |
|
|
When a well requires treatment with chlorine, which type of chlorine is used? |
Liquid chlorine |
|
|
Which source of water has the greatest natural protection from bacterial contamination? |
Deep well in gravel |
|
|
The space between the inner or protective casing and the outer casing or drill hole should be filled with cement grout to a minimum of how many feet? |
10 feet |
|
|
The space between the inner or protective casing and the outer casing or drill hole should be filled with cement grout to a minimum of how many feet? |
10 feet |
|
|
The difference between the static level and the pumping level of a well is called the |
Drawdown |
|
|
The space between the inner or protective casing and the outer casing or drill hole should be filled with cement grout to a minimum of how many feet? |
10 feet |
|
|
The difference between the static level and the pumping level of a well is called the |
Drawdown |
|
|
Chemicals added to a groundwater supply should be added |
After the check valve |
|
|
The space between the inner or protective casing and the outer casing or drill hole should be filled with cement grout to a minimum of how many feet? |
10 feet |
|
|
The difference between the static level and the pumping level of a well is called the |
Drawdown |
|
|
Chemicals added to a groundwater supply should be added |
After the check valve |
|
|
The minimum distance allowed between a municipal well and a buried sewer is |
50 feet |
|
|
The space between the inner or protective casing and the outer casing or drill hole should be filled with cement grout to a minimum of how many feet? |
10 feet |
|
|
The difference between the static level and the pumping level of a well is called the |
Drawdown |
|
|
Chemicals added to a groundwater supply should be added |
After the check valve |
|
|
The minimum distance allowed between a municipal well and a buried sewer is |
50 feet |
|
|
Polyphosphates are only effective in masking (sequestering) iron and manganese in what chemical state? |
Ferrous and manganous |
