Chapter 6

Question 1

Water in an aquifer is called _______water

Answer 1

Ground

Question 2

A well drilled into a water table aquifer is usually a _________well

Answer 2

Shallow

Question 3

Aquifers sandwiched between impermeable layers of rock or clay are called confined aquifers or artesian wells ( true or false )

Answer 3

True

Question 4

Wells dug into artesian aquifers are considered _________wells

Answer 4

Deep

Question 5

Porosity is the percentage of openings or pores within a formation ( true or false)

Answer 5

True

Question 6

Permeability is the ability to ________water through the aquifer

Answer 6

Transmit

Question 7

Some artesian aquifer recharge areas ( outcrop) are located many miles away from the well development site ( true or false)

Answer 7

True

Question 8

No public well can be within ______feet of a livestock , sewer lines, septic tanks, storm sewers, or cemeteries

Answer 8

50 feet

Question 9

No public well can be within. __________feet of a septic tank drain field , improperly constructed water well , or underground fuel or chemical tank

Answer 9

150 feet

Question 10

A sanitary control easement covering land within _______feet of a public well must be recorded in county courthouse records

Answer 10

150 feet

Question 11

Abandoned wells, not plugged, within ______mile of proposed well site must be reported to TCEQ

Answer 11

1/4 mile

Question 12

Well casing supports the bore hole and helps protect the aquifer from contamination. ( true or false )

Answer 12

True

Question 13

The casing must extend at least _____inches above the floor of the pump room or ground surface

Answer 13

18 inches

Question 14

The well screen prevents _______ from entering the well.

Answer 14

Sand

Question 15

The well casing ________acts as a vacuum breaker

Answer 15

Vent

Question 16

TCEQ REQUIRES A faucet for raw water sampling on the discharge pipe of each PWS WELL ( true or false )

Answer 16

True

Question 17

TCEQ requires a _______on the discharge side of each well to measure yields for water production data.

Answer 17

Meter

Question 18

Two types of well pumps in common use are the line shaft vertical turbine and the _________

Answer 18

Submersible

Question 19

The line shaft turbine is driven by a motor located above the pump at ground level ( true or false)

Answer 19

True

Question 20

The submersible pump is driven by a _________motor locate under the pump

Answer 20

Waterproof

Question 21

The water level in the well casing when the pump is off is called the static level ( true or false)

Answer 21

True

Question 22

The water level in the well casing when the pump is on is called the _______

Answer 22

Pumping level

Question 23

The difference between the static level and pumping level is called the _____

Answer 23

Drawdown

Question 24

Three ways to measure water levels is the wetted tape, electric sounder, and the ________

Answer 24

Air line

Question 25

A bacteriological sample, taken from a newly constructed well, on ________successive days, must show negative results

Answer 25

3

Question 26

The state requires a physical and chemical analysis of the new well water after ______ hours of pumping

Answer 26

36

Question 27

The state requires wells be protected by ________fences or locked well houses

Answer 27

Intruder resistant

Question 28

Groundwater has more minerals and dissolved solids than surface water ( true or false)

Answer 28

True

Question 29

Ground water is usually clear and void of ______

Answer 29

Bacteria

Question 30

Treatment for excessive mineral content includes softening, ion exchange, EDR, and _______

Answer 30

Reverse osmosis

Question 31

Hydrogen sulfide gas can be removed by an ________process

Answer 31

Aeration

Question 32

A type of poly phosphate can be used to _________clear water iron ( dissolved iron ) before it is oxidized and becomes red ,suspended iron

Answer 32

Sequester

Question 33

Treatment of corrosive ground water can be accomplished by adding alkalinity as lime or soda ash to adjust the PH ( true or false )

Answer 33

True