On-Site Sewage Facility (OSSF) Installer II Exam
Recommended Test Questions And Correct Answers
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Two wastewater tests commonly used to measure the strength of sewage are the
_______ and the _____ SELECTED ANSWER 👀 BOD and the SS
Blockage in the home plumbing system is often caused by _______, _______ and
_______ SELECTED ANSWER 👀 Oils fats and grease
It is recommended that ____________not be used because they significantly
increase the amount of suspended solids and organic matter discharged into the
sewage disposal system SELECTED ANSWER 👀 Garbage disposal
Wastewater containing no DO is referred to as ___________is __________, and
has _________odor SELECTED ANSWER 👀 Septic
Dark grayto black color
strong disagreeable
Information on boundaries and property lot size , soil conditions , and location of
existing or planned buildings is obtained during the
a . permit application
b . site evaluation
c . construction
d . installation SELECTED ANSWER 👀 b . site evaluation
,______should NOT be allowed over the OSSF treatment unit or drainfield
a . Vegetation
b . Mowing
c . Earth fill
d . Rainfall runoff SELECTED ANSWER 👀 d . Rainfall runoff
Septic tanks must have a ____or ____compartment design SELECTED ANSWER 👀
2 or 3
In a two compartment system , the first tank should contain between ___to
_____of the required capacity SELECTED ANSWER 👀 1/2 to 2/3
The location of the treatment tank is usually determined by ____of the land and
out from the home the ________ and ______ SELECTED ANSWER 👀 Slope of the
land and The bathroom and Kitchen
List three of the materials acceptable for the construction of treatment and pump
tanks SELECTED ANSWER 👀 Fiberglass
Other materials approved by TECQ
Reinforced plastic polyethylene
Complete the following requirements for a house sewer .
The pipe from the house to the septic tank must have a minimum inside diameter
of no less than 3 inches .
, b . The slope of the house sewer shall be no less than 1/8 fall per foot of pipe . .
The stub out location should be at the highest possible elevation with respect to
the house foundation to avoid deep septic tanks .
d . The line must be of Watertight construction
e A two way clean out plug must be provided between the building and the septic
tank .
f . All fittings should be of the Sanitary type .
g . An additional cleanout may be single type ) must be provided within 5 of every
90 ° bend and for every 50 ' of straight horizontal piping SELECTED ANSWER 👀 a .
3
b . 1/8
c .highest.
d . Watertight
e . clean out septic
f . Sanitary
g . 5 and 50 '
The size of any drainfield is dependent on what two factors ? SELECTED ANSWER
👀 Sewage bading or volume in gallons day = a Long term soil acceptance rate
determined by Class
Complete the following requirements for a standard absorptive drainfield
a . Minimum depth is ___" inches .
b . Minimum separation between drainfield excavations is ____' feet .
c . In most cases , the maximum drainfield depth is _____' feet .
d . The porous media most commonly used is _______gravel SELECTED ANSWER
👀 a . Minimum 18 "
Recommended Test Questions And Correct Answers
Instant Download Pdf
Two wastewater tests commonly used to measure the strength of sewage are the
_______ and the _____ SELECTED ANSWER 👀 BOD and the SS
Blockage in the home plumbing system is often caused by _______, _______ and
_______ SELECTED ANSWER 👀 Oils fats and grease
It is recommended that ____________not be used because they significantly
increase the amount of suspended solids and organic matter discharged into the
sewage disposal system SELECTED ANSWER 👀 Garbage disposal
Wastewater containing no DO is referred to as ___________is __________, and
has _________odor SELECTED ANSWER 👀 Septic
Dark grayto black color
strong disagreeable
Information on boundaries and property lot size , soil conditions , and location of
existing or planned buildings is obtained during the
a . permit application
b . site evaluation
c . construction
d . installation SELECTED ANSWER 👀 b . site evaluation
,______should NOT be allowed over the OSSF treatment unit or drainfield
a . Vegetation
b . Mowing
c . Earth fill
d . Rainfall runoff SELECTED ANSWER 👀 d . Rainfall runoff
Septic tanks must have a ____or ____compartment design SELECTED ANSWER 👀
2 or 3
In a two compartment system , the first tank should contain between ___to
_____of the required capacity SELECTED ANSWER 👀 1/2 to 2/3
The location of the treatment tank is usually determined by ____of the land and
out from the home the ________ and ______ SELECTED ANSWER 👀 Slope of the
land and The bathroom and Kitchen
List three of the materials acceptable for the construction of treatment and pump
tanks SELECTED ANSWER 👀 Fiberglass
Other materials approved by TECQ
Reinforced plastic polyethylene
Complete the following requirements for a house sewer .
The pipe from the house to the septic tank must have a minimum inside diameter
of no less than 3 inches .
, b . The slope of the house sewer shall be no less than 1/8 fall per foot of pipe . .
The stub out location should be at the highest possible elevation with respect to
the house foundation to avoid deep septic tanks .
d . The line must be of Watertight construction
e A two way clean out plug must be provided between the building and the septic
tank .
f . All fittings should be of the Sanitary type .
g . An additional cleanout may be single type ) must be provided within 5 of every
90 ° bend and for every 50 ' of straight horizontal piping SELECTED ANSWER 👀 a .
3
b . 1/8
c .highest.
d . Watertight
e . clean out septic
f . Sanitary
g . 5 and 50 '
The size of any drainfield is dependent on what two factors ? SELECTED ANSWER
👀 Sewage bading or volume in gallons day = a Long term soil acceptance rate
determined by Class
Complete the following requirements for a standard absorptive drainfield
a . Minimum depth is ___" inches .
b . Minimum separation between drainfield excavations is ____' feet .
c . In most cases , the maximum drainfield depth is _____' feet .
d . The porous media most commonly used is _______gravel SELECTED ANSWER
👀 a . Minimum 18 "
