OSSF DR TEST PRACTICE || A+ Graded Already.
_______ and ________ soil textural classes are always unsuitable for standard absorptive
OSSF correct answers class IA and IV
List each of the major soil horizons correct answers surface soil A, surface soil B, and parent
material
_____________ is a term describing the ability of water to migrate through a soil profile
under either _________ or __________ conditions. correct answers Hydraulic conductivity,
saturated, unsaturated
Interconnected pores in the soil profile allow ______ and _______ to enter the soil at its
surface and migrate downward correct answers air, water
List the four components of soil correct answers air, water, organics, inorganics
A drainfield is 50 feet by 90 feet and must be covered with an average of 15 inches of sand
loam. How many cubic yards of sandy loam soil must be purchased (find the volume of a
rectangular object)? correct answers 208.3 cubic yards
What would be the volume of a 5-foot-diameter pump tank that is 5 feet tall with the inlet 1
foot below the rim? correct answers 587 gals
What would be the percent slope on a lot 250 feet deep that drops 20 feet in elevation over
the depth of the lot? correct answers 8%
How many cubic yards of gravel would be needed to fill a ditch 3 feet deep, 10 feet wide, and
12 feet long with 18 inches of gravel? 1 cubic yard = 27 cubic feet. correct answers 6.67
cubic yards
A septic tank is 6 feet in diameter and is 8 feet deep. How many gallons will it hold if the
overflow line is located half way up from the bottom? correct answers 846 gals
Calculate the working liquid capacity (volume) for this septic tank. SEE PAGE 2-39!! correct
answers 1077gals
What is the surface area (area in square feet) of an evapotranspiration system 40 feet wide
and 65 feet long? correct answers 2,600 sqft
Figure the acreage for a piece of property that measures 256 feet on each of four sides.
correct answers 1.5 acres
Figure the area of a lot that measures 60ft by 280ft correct answers 16,800sqft ,0.39 acres
A disposal option that might be considered in a clay soil would be a ________. correct
answers drip or spray irrigation
The primary treatment device providing the least or poorest treatment of domestic wastewater
would be _______. correct answers septic tank
, Nitrogen or nitrate removal in soil occurs by _________. correct answers vegetation uptake
The factors influencing the survival of bacteria in soil are _______. correct answers moisture,
temperature, pH, and organic matter.
Physical removal of bacteria by straining occurs when _______. correct answers the bacteria
are larger than the pore openings in the soil
A solid that can be filtered out of the wastewater is a _________. correct answers suspended
solid
Which of the following describes domestic wastewater as it leaves a home? correct answers
fresh, light in color, has dissolved oxygen
Which of the following are problems caused by malfunctioning septic tank systems? correct
answers surface water pollution, groundwater contamination, and standing sewage in
neighborhoods
An inorganic chemical that affects human health is correct answers nitrate
Parasites (helminths) found in untreated sewage include ________. correct answers
hookworm, round worms, and tapeworms
Viruses are responsible for such diseases as correct answers poliomyelitis and infectious
hepatitis
A type of bacteria that indicates sewage contamination is ________. correct answers fecal
coliform
Protozoa are very simple animal organisms that may cause ________. correct answers
amoeba dysentery and Giardiasis
Waterborne diseases that spread by pathogenic bacteria include _________. correct answers
typhoid, cholera, and dysentery
Microorganisms in wastewater include __________. correct answers bacteria, viruses,
protozoa and helminths.
Microorganisms that cause disease are called _________. correct answers pathogens
Domestic wastewater contains microorganisms that are capable of causing _________.
correct answers infectious diseases
An official inspector of a new OSSF is a(n) _______. correct answers designated
representative
A trench requires 430 cubic feet of gravel. How many cubic yards must be purchased? correct
answers 16 cubic yards
_______ and ________ soil textural classes are always unsuitable for standard absorptive
OSSF correct answers class IA and IV
List each of the major soil horizons correct answers surface soil A, surface soil B, and parent
material
_____________ is a term describing the ability of water to migrate through a soil profile
under either _________ or __________ conditions. correct answers Hydraulic conductivity,
saturated, unsaturated
Interconnected pores in the soil profile allow ______ and _______ to enter the soil at its
surface and migrate downward correct answers air, water
List the four components of soil correct answers air, water, organics, inorganics
A drainfield is 50 feet by 90 feet and must be covered with an average of 15 inches of sand
loam. How many cubic yards of sandy loam soil must be purchased (find the volume of a
rectangular object)? correct answers 208.3 cubic yards
What would be the volume of a 5-foot-diameter pump tank that is 5 feet tall with the inlet 1
foot below the rim? correct answers 587 gals
What would be the percent slope on a lot 250 feet deep that drops 20 feet in elevation over
the depth of the lot? correct answers 8%
How many cubic yards of gravel would be needed to fill a ditch 3 feet deep, 10 feet wide, and
12 feet long with 18 inches of gravel? 1 cubic yard = 27 cubic feet. correct answers 6.67
cubic yards
A septic tank is 6 feet in diameter and is 8 feet deep. How many gallons will it hold if the
overflow line is located half way up from the bottom? correct answers 846 gals
Calculate the working liquid capacity (volume) for this septic tank. SEE PAGE 2-39!! correct
answers 1077gals
What is the surface area (area in square feet) of an evapotranspiration system 40 feet wide
and 65 feet long? correct answers 2,600 sqft
Figure the acreage for a piece of property that measures 256 feet on each of four sides.
correct answers 1.5 acres
Figure the area of a lot that measures 60ft by 280ft correct answers 16,800sqft ,0.39 acres
A disposal option that might be considered in a clay soil would be a ________. correct
answers drip or spray irrigation
The primary treatment device providing the least or poorest treatment of domestic wastewater
would be _______. correct answers septic tank
, Nitrogen or nitrate removal in soil occurs by _________. correct answers vegetation uptake
The factors influencing the survival of bacteria in soil are _______. correct answers moisture,
temperature, pH, and organic matter.
Physical removal of bacteria by straining occurs when _______. correct answers the bacteria
are larger than the pore openings in the soil
A solid that can be filtered out of the wastewater is a _________. correct answers suspended
solid
Which of the following describes domestic wastewater as it leaves a home? correct answers
fresh, light in color, has dissolved oxygen
Which of the following are problems caused by malfunctioning septic tank systems? correct
answers surface water pollution, groundwater contamination, and standing sewage in
neighborhoods
An inorganic chemical that affects human health is correct answers nitrate
Parasites (helminths) found in untreated sewage include ________. correct answers
hookworm, round worms, and tapeworms
Viruses are responsible for such diseases as correct answers poliomyelitis and infectious
hepatitis
A type of bacteria that indicates sewage contamination is ________. correct answers fecal
coliform
Protozoa are very simple animal organisms that may cause ________. correct answers
amoeba dysentery and Giardiasis
Waterborne diseases that spread by pathogenic bacteria include _________. correct answers
typhoid, cholera, and dysentery
Microorganisms in wastewater include __________. correct answers bacteria, viruses,
protozoa and helminths.
Microorganisms that cause disease are called _________. correct answers pathogens
Domestic wastewater contains microorganisms that are capable of causing _________.
correct answers infectious diseases
An official inspector of a new OSSF is a(n) _______. correct answers designated
representative
A trench requires 430 cubic feet of gravel. How many cubic yards must be purchased? correct
answers 16 cubic yards
