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CSES 6080 Soil Resources & Conservation > Module 12 - Erosion and Sediment Control BMPs in Alabama > Flashcards

Module 12 - Erosion and Sediment Control BMPs in Alabama Flashcards

1
Q

Erosion Control Blanket: Which of the folling provides only the minimum amount of erosion resistance?
Biodegradable Erosion Control Blanket
Permanent Erosion Control Blanket
Turf Reinforment Mat
Netting

A

Netting

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2
Q

Inlet protection is a practice of …
Runoff conveyance
Site preparation
Sediment Control
Surface stabilization

A

Sediment Control

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3
Q

Which cross-sectional grass swale shapes are common?
Parabolic and triangular.
Round.
Triangular, parabolic, or trapezoidal.
Trapezoidal.

A

Triangular, parabolic, or trapezoidal.

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4
Q

When mulching a sloped area …
A properly anchored erosion control blanket to keep the mulch in place.
A special permit is required.
Only straw must be used.
Only HECPs are permitted.

A

A properly anchored erosion control blanket to keep the mulch in place.

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5
Q

Topsoiling is a practice of …
Surface stabilization
Site preparation
Sediment Control
Runoff conveyance

A

Site preparation

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6
Q

Check dams: When is it necessary to excavate a shallow keyway across a channel?
In every check dam installation.
Never.
In compacted soils only.
In highly erosive soil conditions.

A

In highly erosive soil conditions.

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7
Q

The minium aggregate depth of a construction exit bad is:
12 inches
9 inches
3 inches
6 inches

A

6 inches

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8
Q

Sodding is a practice of …
Surface stabilization
Sediment Control
Site preparation
Runoff conveyance

A

Surface stabilization

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9
Q

Chemical Stabilization: Applying products like polyacrylamide (PAM) near natural water bodies …:
can improve receiving water quality.
is prohibited by the Clean Water Act.
requires the establishment of a buffer zone.

A

requires the establishment of a buffer zone.

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10
Q

Which 24-hour design storm criteria is typically used for permanent diversions?
2 to 5-year
100-year
10 to 50-year
10 to 100-year

A

10 to 50-year

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11
Q

Preservation of Vegetation: Site clearing should never be closer than
5 feet to a branch of a tree.
5 feet to the trunk of a tree.
50 feet to the trunk of a tree.
15 feet to the trunk of a tree.

A

5 feet to the trunk of a tree.

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12
Q

How is water from a sediment basin discharged under normal operating conditions?
Through a floating skimmer
It is not discharged, it is infiltrated
Through the storm drain
Through the spillway

A

Through a floating skimmer

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13
Q

Which 24-hour design storm criteria is typically used for temporary diversions on construction sites?
10 to 50-year
100-year
10 to 100-year
2 to 5-year

A

2 to 5-year

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14
Q

A favorable pH range for plant growth is usually:
4.0-8.0
7.0-8.0
6.0-6.5
6.0-7.5

A

6.0-6.5

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15
Q

Check dams are used for drainage areas of
5 acres or less.
1 acre or less.
1 acre and more.
10 acres or less.

A

1 acre or less.

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16
Q

Retaining wall is a practice of …
Site preparation
Sediment Control
Runoff conveyance
Surface stabilization

A

Surface stabilization

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17
Q

What is the proper seedbed preparation for permanent seeding?
Tillage to a depth of 6 inches, application of lime and fertilizer.
Tillage to a depth of 6 inches, application of fertilizer.
Tillage to a depth of 6 inches.
Tillage to a depth of 6 inches, application of lime.

A

Tillage to a depth of 6 inches, application of lime and fertilizer.

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18
Q

Erosion control blanket is a practice of …
Surface stabilization
Site preparation
Sediment Control
Runoff conveyance

A

Surface stabilization

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19
Q

Chemical stabilization is a practice of …
Sediment Control
Runoff conveyance
Site preparation
Surface stabilization

A

Surface stabilization

20
Q

Floating turbidity barrier is a practice of …
Runoff conveyance
Site preparation
Surface stabilization
Sediment Control

A

Sediment Control

20
Q

Floating turbidity barrier is a practice of …
Runoff conveyance
Site preparation
Surface stabilization
Sediment Control

A

Sediment Control

21
Q

Filter strip is a practice of …
Surface stabilization
Site preparation
Sediment Control
Runoff conveyance

A

Sediment Control

22
Q

Flocculants have to be used together with which best management practice?

Floating Turbidity Barrier.
Mulching.
Sediment Barrier.
Sediment Basin.

A

Sediment Basin.

23
Q

Check dams have to be lined with
Straw.
Erosion control blankets.
Woven geotextile.
Non-woven geotextile.

A

Non-woven geotextile.

24
Q

Preservation of vegetation is a practice of …
Site preparation
Runoff conveyance
Surface stabilization
Sediment Control

A

Surface stabilization

25
Q

In a seeded area, what percentage of the ground surface should be visible after mulching?
30%
50%
5%
25%

26
Q

Mulching is a practice of …
Runoff conveyance
Surface stabilization
Site preparation
Sediment Control

A

Surface stabilization

27
Q

Check dams can be build as:
rock, wattle, silt fence, or sand bag check dam.
rock, silt fence, or sand bag check dam.
rock, wattle, or sand bag check dam.
wattle, silt fence, or sand bag check dam.

A

rock, wattle, silt fence, or sand bag check dam.

28
Q

Check dam is a practice of …
Runoff conveyance
Sediment Control
Surface stabilization
Site preparation

A

Runoff conveyance

29
Q

Rock check dams should be installed with side slopes
2:1 or steeper.
1:2 or steeper.
2:1 or flatter.
1:2 or flatter.

A

2:1 or flatter.

30
Q

Permanent seeding is a practice of …
Runoff conveyance
Sediment Control
Site preparation
Surface stabilization

A

Surface stabilization

31
Q

Check dams
Reduce turbidity.
Improve infiltration capacities.
Reduce runoff.
Reduce channel erosion.

A

Reduce channel erosion.

32
Q

Erosion Control Blanket: Which of the following provides erosion protection for 1 to 5 years?
Netting
Biodegradable Erosion Control Blanket
Permanent Erosion Control Blanket
Turf Reinforcement Mat

A

Biodegradable Erosion Control Blanket

33
Q

Construction exit pad is a practice of …
Sediment Control
Runoff conveyance
Surface stabilization
Site preparation

A

Site preparation

34
Q

The minimum width of a construction exit bad is:
As required
50 feet
25 feet
30 feet

A

As required

35
Q

How can you ensure that water runs over a check dam and not around it?
Materials are positioned to form a hyperbolic top perpendicularly to the channel flow.
The crest of the dam is installed level.
Materials are positioned to form a parabolic top perpendicularly to the channel flow.
A non-woven geotextile is positioned on the dam.

A

Materials are positioned to form a parabolic top perpendicularly to the channel flow.

36
Q

Grass swale is a practice of …
Site preparation
Surface stabilization
Runoff conveyance
Sediment Control

A

Runoff conveyance

37
Q

Temporary seeding is a practice of …
Surface stabilization
Runoff conveyance
Sediment Control
Site preparation

A

Surface stabilization

38
Q

The minimum length of a construction exit bad is:
25 feet
As required
50 feet
30 feet

39
Q

Sediment basin is a practice of …
Runoff conveyance
Sediment Control
Surface stabilization
Site preparation

A

Sediment Control

40
Q

Permanent seeding: If a soil test is not available, what is the recommended application rate of lime?
1 tons / acre on clayey and 2 ton / acre on sandy soils.
0.5 tons / acre.
2 tons / acre.
2 tons / acre on clayey and 1 ton / acre on sandy soils.

A

2 tons / acre on clayey and 1 ton / acre on sandy soils.

41
Q

How is water from a sediment basin discharged during high rainfall?
Through a floating skimmer
Through the storm drain
It is not discharged, it is infiltrated
Through the spillway

A

Through the spillway

42
Q

Outlet protection is a practice of …
Runoff conveyance
Sediment Control
Site preparation
Surface stabilization

A

Runoff conveyance

43
Q

If installed correctly, check dams may capture
Mainly silt-sized sediments.
Suspended, clay-size sediments.
Mainly coarser sediments.

A

Mainly coarser sediments.

44
Q

Flocculant is a practice of …
Sediment Control
Site preparation
Runoff conveyance
Surface stabilization

A

Sediment Control

45
Q

Erosion Control Blanket: Which of the following provides erosion protection similar to stone or concrete liners?
Turf Reinforcement Mat
Netting
Permanent Erosion Control Blanket
Biodegradable Erosion Control Blanket

A

Turf Reinforcement Mat

CSES 6080 Soil Resources & Conservation (18 decks)

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