OSSF DR TEST 2026 | All Questions and Correct
Answers | Graded A+ | Verified Answers |
Brand New Version!
_______ and ________ soil textural classes are always unsuitable for standard
absorptive OSSF ---------CORRECT ANSWER-----------------class IA and IV
List each of the major soil horizons ---------CORRECT ANSWER-----------------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
ANSWER-----------------Hydraulic conductivity, saturated, unsaturated
Interconnected pores in the soil profile allow ______ and _______ to enter the
soil at its surface and migrate downward ---------CORRECT ANSWER-----------------
air, water
List the four components of soil ---------CORRECT ANSWER-----------------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 ANSWER-----------------
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 ANSWER-----------------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 ANSWER-----------------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 ANSWER-----------------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
ANSWER-----------------846 gals
Calculate the working liquid capacity (volume) for this septic tank. SEE PAGE 2-
39!! ---------CORRECT ANSWER-----------------1077gals
, What is the surface area (area in square feet) of an evapotranspiration system 40
feet wide and 65 feet long? ---------CORRECT ANSWER-----------------2,600 sqft
Figure the acreage for a piece of property that measures 256 feet on each of four
sides. ---------CORRECT ANSWER-----------------1.5 acres
Figure the area of a lot that measures 60ft by 280ft ---------CORRECT ANSWER------
-----------16,800sqft ,0.39 acres
A disposal option that might be considered in a clay soil would be a ________. ----
-----CORRECT ANSWER-----------------drip or spray irrigation
The primary treatment device providing the least or poorest treatment of
domestic wastewater would be _______. ---------CORRECT ANSWER-----------------
septic tank
Nitrogen or nitrate removal in soil occurs by _________. ---------CORRECT
ANSWER-----------------vegetation uptake
Answers | Graded A+ | Verified Answers |
Brand New Version!
_______ and ________ soil textural classes are always unsuitable for standard
absorptive OSSF ---------CORRECT ANSWER-----------------class IA and IV
List each of the major soil horizons ---------CORRECT ANSWER-----------------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
ANSWER-----------------Hydraulic conductivity, saturated, unsaturated
Interconnected pores in the soil profile allow ______ and _______ to enter the
soil at its surface and migrate downward ---------CORRECT ANSWER-----------------
air, water
List the four components of soil ---------CORRECT ANSWER-----------------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 ANSWER-----------------
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 ANSWER-----------------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 ANSWER-----------------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 ANSWER-----------------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
ANSWER-----------------846 gals
Calculate the working liquid capacity (volume) for this septic tank. SEE PAGE 2-
39!! ---------CORRECT ANSWER-----------------1077gals
, What is the surface area (area in square feet) of an evapotranspiration system 40
feet wide and 65 feet long? ---------CORRECT ANSWER-----------------2,600 sqft
Figure the acreage for a piece of property that measures 256 feet on each of four
sides. ---------CORRECT ANSWER-----------------1.5 acres
Figure the area of a lot that measures 60ft by 280ft ---------CORRECT ANSWER------
-----------16,800sqft ,0.39 acres
A disposal option that might be considered in a clay soil would be a ________. ----
-----CORRECT ANSWER-----------------drip or spray irrigation
The primary treatment device providing the least or poorest treatment of
domestic wastewater would be _______. ---------CORRECT ANSWER-----------------
septic tank
Nitrogen or nitrate removal in soil occurs by _________. ---------CORRECT
ANSWER-----------------vegetation uptake
