Which type of well is most difficult to maintain in a sanitary condition?
a. Dug well.
b. Bored well.
d. Drilled well.
The annular space between a well casing and the surrounding earth should be
filled with cement grout to a depth of at least ___________ feet.
In the blank space to the left of each type of well Iisted below, place the number
corresponding to the characteristic in the right-hand column which more nearly
describes that type of well than do the other characteristics.
a. _____ Dug well.
Can be constructed in a kind of soiI at great
b. _____ Bored well.
Used where the water table is not very deep.
c. _____ Driven well.
Simplest and easiest where soiI is not too hard.
d. _____ Drilled well.
Can be constructed anywhere with simple
Practical at depths less than 100 ft where
water requirement is low.
If an individual wastewater disposal system is to be constructed in the general
vicinity of an existing well, what is the least distance that should be maintained
between the well and the:
a. Septic tank. _______ feet.
b. Laterals (disposal field) _______ feet.
Newly constructed wells should be disinfected with ________ ppm calcium.