SWM DEQ Exam 2026 Questions With
100% Correct Answers
Verified Updates Verified By Experts
What is a level spreader lip made out of? - Correct Answer -concrete, wood, or
pre-fabricated metal (non-erodible material)
Grass channel side slopes and longitudinal slope - Correct Answer -3H:1V or
flatter, max longitudinal slope 4%
Max contributing drainage area for grass channel - Correct Answer -5 acres
Pre-treatment check dams in grass channels - Correct Answer -max desired height
12-18"
Soil compost amendment. 1st soil tested conducted every - Correct Answer -5000
ft^2 to determine soil properties
,Soil compost amendment. 2nd test taken - Correct Answer -At least 1 week after
compost has been incorporated
For soil compost amendment prep you must deep till 2-3' with rips - Correct
Answer -perpendicular to direction of flow
Difference between extensive and intensive for vegetated roof - Correct Answer -
extensive: low plants with 3" to 6" growth medium, intensive medium 6 to 12"
The vegetated roof leakproof tests involves putting 2" of water over membrane
for - Correct Answer -48 hours
Warranty related to vegetative roof suggests - Correct Answer -75% survival after
first growing season
Minimum effective vegetated ground cover for flat roofs and for pitched roofs -
Correct Answer -75%, 90%
, Difference between level 1 and level 2 permeable pavement - Correct Answer -for
level 1, UD is required
How many design scales are there fore infiltration practices? - Correct Answer -3
For check dams in dry swale, what is the max check dam height? - Correct Answer
-12"
What is the filter layer in the dry swale? - Correct Answer -3" of pea gravel
Difference in swale slopes for wet swale level 1 and level 2 - Correct Answer -level
1 swale slopes less than 2%, level 2 swale slopes less than 1%
Difference between level 1 and level 2 filtering practices - Correct Answer -level 1
is a one cell design and level 2 is a two cell design
If an E&SC practice is going to be converted to a permanent BMP, how should the
elevations compare? - Correct Answer -BMP elevation should be lower
100% Correct Answers
Verified Updates Verified By Experts
What is a level spreader lip made out of? - Correct Answer -concrete, wood, or
pre-fabricated metal (non-erodible material)
Grass channel side slopes and longitudinal slope - Correct Answer -3H:1V or
flatter, max longitudinal slope 4%
Max contributing drainage area for grass channel - Correct Answer -5 acres
Pre-treatment check dams in grass channels - Correct Answer -max desired height
12-18"
Soil compost amendment. 1st soil tested conducted every - Correct Answer -5000
ft^2 to determine soil properties
,Soil compost amendment. 2nd test taken - Correct Answer -At least 1 week after
compost has been incorporated
For soil compost amendment prep you must deep till 2-3' with rips - Correct
Answer -perpendicular to direction of flow
Difference between extensive and intensive for vegetated roof - Correct Answer -
extensive: low plants with 3" to 6" growth medium, intensive medium 6 to 12"
The vegetated roof leakproof tests involves putting 2" of water over membrane
for - Correct Answer -48 hours
Warranty related to vegetative roof suggests - Correct Answer -75% survival after
first growing season
Minimum effective vegetated ground cover for flat roofs and for pitched roofs -
Correct Answer -75%, 90%
, Difference between level 1 and level 2 permeable pavement - Correct Answer -for
level 1, UD is required
How many design scales are there fore infiltration practices? - Correct Answer -3
For check dams in dry swale, what is the max check dam height? - Correct Answer
-12"
What is the filter layer in the dry swale? - Correct Answer -3" of pea gravel
Difference in swale slopes for wet swale level 1 and level 2 - Correct Answer -level
1 swale slopes less than 2%, level 2 swale slopes less than 1%
Difference between level 1 and level 2 filtering practices - Correct Answer -level 1
is a one cell design and level 2 is a two cell design
If an E&SC practice is going to be converted to a permanent BMP, how should the
elevations compare? - Correct Answer -BMP elevation should be lower
