OSSF DR Test Practice Questions – Exam Preparation Study Guide with Answers

)__*_()()(_(()*)()(*)(OSSF DR TEST
)__*_()()(_(()*)()(*)(OSSF
PRACTICE Q.pdf10/23/2026,
DR TEST
)__*_()()(_(()*)()(*)(OSSF
8:13:01
PRACTICE
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
Q.pdf10/23/2026,
DR TEST8:13:01
PRACTICE
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
Q.pdf10/23/2026,
4:03:13 AM1
8:13:01
of 25Page
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
1OSSF4:03:13
DR TESTAM1
PRACTICE
of 25PageQ.pdf2026/10/23Page
1OSSF4:03:13
DR TESTAM1
PRACTICE
of
1 of
25Page
25 Q.pdf2026/10/23Page
1OSSF DR TEST PRACTICE
1 of 25 Q.pdf2026/10/23Page 1 of 25




OSSF DR TEST PRACTICE Save




Practice questions for this set


Learn 1 /7 Study using Learn




T/F: Septic tanks may be 1.5 inch-thick steel



Choose an answer



1 True 2 False



Don't know?




Terms in this set (150)




)__*_()()(_(()*)()(*)(OSSF DR TEST
)__*_()()(_(()*)()(*)(OSSF
PRACTICE Q.pdf10/23/2026,
DR TEST
)__*_()()(_(()*)()(*)(OSSF
8:13:01
PRACTICE
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
Q.pdf10/23/2026,
DR TEST8:13:01
PRACTICE
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
Q.pdf10/23/2026,
4:03:13 AM1
8:13:01
of 25Page
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
1OSSF4:03:13
DR TESTAM1
PRACTICE
of 25PageQ.pdf2026/10/23Page
1OSSF4:03:13
DR TESTAM1
PRACTICE
of
1 of
25Page
25 Q.pdf2026/10/23Page
1OSSF DR TEST PRACTICE
1 of 25 Q.pdf2026/10/23Page 1 of 25

,)__*_()()(_(()*)()(*)(OSSF DR TEST
)__*_()()(_(()*)()(*)(OSSF
PRACTICE Q.pdf10/23/2026,
DR TEST
)__*_()()(_(()*)()(*)(OSSF
8:13:01
PRACTICE
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
Q.pdf10/23/2026,
DR TEST8:13:01
PRACTICE
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
Q.pdf10/23/2026,
4:03:13 AM2
8:13:01
of 25Page
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
2OSSF4:03:13
DR TESTAM2
PRACTICE
of 25PageQ.pdf2026/10/23Page
2OSSF4:03:13
DR TESTAM2
PRACTICE
of
2 of
25Page
25 Q.pdf2026/10/23Page
2OSSF DR TEST PRACTICE
2 of 25 Q.pdf2026/10/23Page 2 of 25




_______ and ________ soil textural classes are class IA and IV
always unsuitable for standard absorptive
OSSF


List each of the major soil horizons surface soil A, surface soil B, and parent material




_____________ is a term describing the ability of Hydraulic conductivity, saturated, unsaturated
water to migrate through a soil profile
under either _________ or __________ conditions.


Interconnected pores in the soil profile air, water
allow ______ and _______ to enter the soil at its
surface and migrate downward


List the four components of soil air, water, organics, inorganics


A drainfield is 50 feet by 90 feet and must 208.3 cubic yards
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)?


)__*_()()(_(()*)()(*)(OSSF DR TEST
)__*_()()(_(()*)()(*)(OSSF
PRACTICE Q.pdf10/23/2026,
DR TEST
)__*_()()(_(()*)()(*)(OSSF
8:13:01
PRACTICE
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
Q.pdf10/23/2026,
DR TEST8:13:01
PRACTICE
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
Q.pdf10/23/2026,
4:03:13 AM2
8:13:01
of 25Page
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
2OSSF4:03:13
DR TESTAM2
PRACTICE
of 25PageQ.pdf2026/10/23Page
2OSSF4:03:13
DR TESTAM2
PRACTICE
of
2 of
25Page
25 Q.pdf2026/10/23Page
2OSSF DR TEST PRACTICE
2 of 25 Q.pdf2026/10/23Page 2 of 25

, )__*_()()(_(()*)()(*)(OSSF DR TEST
)__*_()()(_(()*)()(*)(OSSF
PRACTICE Q.pdf10/23/2026,
DR TEST
)__*_()()(_(()*)()(*)(OSSF
8:13:01
PRACTICE
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
Q.pdf10/23/2026,
DR TEST8:13:01
PRACTICE
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
Q.pdf10/23/2026,
4:03:13 AM3
8:13:01
of 25Page
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
3OSSF4:03:13
DR TESTAM3
PRACTICE
of 25PageQ.pdf2026/10/23Page
3OSSF4:03:13
DR TESTAM3
PRACTICE
of
3 of
25Page
25 Q.pdf2026/10/23Page
3OSSF DR TEST PRACTICE
3 of 25 Q.pdf2026/10/23Page 3 of 25




What would be the volume of a 5-foot- 587 gals
diameter pump tank that is 5 feet tall with
the inlet 1 foot below the rim?


What would be the percent slope on a lot 8%
250 feet deep that drops 20 feet in
elevation over the depth of the lot?


How many cubic yards of gravel would be 6.67 cubic yards
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.


A septic tank is 6 feet in diameter and is 8 846 gals
feet deep. How many gallons will it hold if
the overflow line is located half way up
from the bottom?


Calculate the working liquid capacity 1077gals
(volume) for this septic tank. SEE PAGE 2-
39!!


What is the surface area (area in square 2,600 sqft
feet) of an evapotranspiration system 40
feet wide and 65 feet long?


)__*_()()(_(()*)()(*)(OSSF DR TEST
)__*_()()(_(()*)()(*)(OSSF
PRACTICE Q.pdf10/23/2026,
DR TEST
)__*_()()(_(()*)()(*)(OSSF
8:13:01
PRACTICE
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
Q.pdf10/23/2026,
DR TEST8:13:01
PRACTICE
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
Q.pdf10/23/2026,
4:03:13 AM3
8:13:01
of 25Page
AM*@*^%^#!*&^*&^!()(@*&$*@10/23/2026,
3OSSF4:03:13
DR TESTAM3
PRACTICE
of 25PageQ.pdf2026/10/23Page
3OSSF4:03:13
DR TESTAM3
PRACTICE
of
3 of
25Page
25 Q.pdf2026/10/23Page
3OSSF DR TEST PRACTICE
3 of 25 Q.pdf2026/10/23Page 3 of 25