QUESTIONS WITH VERIFIED
ANSWERS.
What steps are necessary for installing RECPs on a slope? -
correct answer-Good Seedbed preparation
planting of seed
anchor at top
overlap material
anchor to the soil
Identify types of materials RECPs are constructed from -
correct answer-straw
coconut
excelsior
coir
polypropylene
nylon
What is an ECB? - correct answer-Erosion control blanket
,What is a TRM - correct answer-Turf Reinforcement Mat
What do you evaluate for selection of an ECB and TRM? -
correct answer-shear stress
velocity
How does seedbed preparation for slope RECP's differ from
and ECB and TRM? - correct answer-channel slopes must be
smooth
check slots/staple barrier are required
What must be considered in establishing vegetation - correct
answer-Selecting proper seed mix that includes warm season
grasses, the use of soil amendments, and planting when soil
moisture exists.
List the methods for planting seed - correct answer-Mechanical
Drill
Broadcasting
Hydraulic Methods
,What steps are necessary for successful hydraulic planting of
seed? - correct answer-Apply seed first with no mulch, then
apply the hydraulic mulch.
How long should it be assumed that it will take to develop
adequate vegetative cover - correct answer-At least 2 growing
seasons
List the benefits for using vegetation to control wind erosion -
correct answer-Reduces particle detachment and wind velocity
Absorbs the impact of moving particles
What two factors are used to calculate the effectiveness of a
sediment and erosion control plan? - correct answer-C-Factor
P-Factor
How are C Factors determined? - correct answer-weighted
average of erosion control practices found in a sediment and
erosion control plan
, How are net P-Factor values determined? - correct answer-
weighted value of the sediment control practices through which
runoff waters pass at the discharge points
Retaining Walls - correct answer-Stabilize the toe of the slope
Reduce Slope Steepness
Soil Roughening - correct answer-Roughens the soil surface by
mechanical means
Typically performed parallel to the slop contours and
perpendicular to the direction of the runoff
Types of Soil Roughening - correct answer-Track Walking
Scarifying
Stair Stepping
Imprinting
Sheepsfoot rolling
Track Walking - correct answer-