MD Erosion and Sediment Control
woven silt film - ✔✔ correct answer used in silt fences, super silt fences and standard inlet
protections
woven monofilament - ✔✔ correct answer used in temporary stone outlet and gabion outlet
structures
Nonwoven geotextile - ✔✔ correct answer commonly used in practices like inflow and outflow
protections, at grade, median curb inlet protections, and in all dewatering practices
Galvanized Chain Link Fence - ✔✔ correct answer Used in super silt fence and diversion fence
gabion baskets - ✔✔ correct answer Used in inflow and inlet protections, minimum 11 gauge wire,
stone size used to fill baskets 4-7"
compost - ✔✔ correct answer Decomposed organic material that is produced when bacteria in soil
break down garbage and biodegradable trash, making organic fertilizer
stabilized construction entrance - ✔✔ correct answer Reduces tracking of Sediment onto roadways,
provides stable area for egress and ingress from construction site
benching - ✔✔ correct answer Provides erosion control and vegetative establishment for extreme
changes in grade, provides subsurface drainage where necessary for slope stability, to be free of
sediment during construction
vegetative stabilization - ✔✔ correct answer Promotes establishment of vegetation on exposed soil
(disturbed areas) not stabilized by other methods, requires 95 % ground cover
incremental stabilization - ✔✔ correct answer Excavate and stabilize in increments less than 15',
seeding and mulching to be done as work progresses
Vegetative Stabilization-Soil Preparation - ✔✔ correct answer requires seed bed preparation and
application of lime and fertilizer in the top 3"-5"soil by disking or other means
soil stabilization matting - ✔✔ correct answer Material used to temporarily or permanently stabilize
channels or steep slopes until ground cover is established
, MD Erosion and Sediment Control
stockpile area - ✔✔ correct answer Side slopes not steeper than 2:1,
Access should be from the upslope side,
Runoff must drain to a sediment control practice
follow benching criteria when height exceeds 20 feet
earth dike - ✔✔ correct answer Directs a sediment laden water to traps, Diverts clear water away
from disturbed areas, Maximum drainage area (DA) and slope-10 acres & 10%, Dike to divert clear
water should be lined with matting or stone
temporary swale - ✔✔ correct answer Directs a sediment laden water to traps
perimeter dike/swale - ✔✔ correct answer A combination of the earth dike and temporary swale,
Handles drainage areas less than 2 acres
temporary storm drain diversion - ✔✔ correct answer A temporary swale or pipe that directs a storm
drain system into a sediment basin or trap
Used to prevent sediment laden water entering a storm drain system and redirects it to a trap or
basin
temporary asphalt berm - ✔✔ correct answer a temporary macadam mound which directs sediment
laden runoff to sediment control, intercepts and diverts clear water, and segments drainage area
clear water diversion pipe - ✔✔ correct answer Used to convey clear water in conjunction with sand
bags around a work area in a drainage way,
Pipe size depends on contributing drainage area as shown below
temporary barrier diversion - ✔✔ correct answer Diverts clear water channel flow around work area
In a drainage way,
Waterway construction permit required for a stream diversion
woven silt film - ✔✔ correct answer used in silt fences, super silt fences and standard inlet
protections
woven monofilament - ✔✔ correct answer used in temporary stone outlet and gabion outlet
structures
Nonwoven geotextile - ✔✔ correct answer commonly used in practices like inflow and outflow
protections, at grade, median curb inlet protections, and in all dewatering practices
Galvanized Chain Link Fence - ✔✔ correct answer Used in super silt fence and diversion fence
gabion baskets - ✔✔ correct answer Used in inflow and inlet protections, minimum 11 gauge wire,
stone size used to fill baskets 4-7"
compost - ✔✔ correct answer Decomposed organic material that is produced when bacteria in soil
break down garbage and biodegradable trash, making organic fertilizer
stabilized construction entrance - ✔✔ correct answer Reduces tracking of Sediment onto roadways,
provides stable area for egress and ingress from construction site
benching - ✔✔ correct answer Provides erosion control and vegetative establishment for extreme
changes in grade, provides subsurface drainage where necessary for slope stability, to be free of
sediment during construction
vegetative stabilization - ✔✔ correct answer Promotes establishment of vegetation on exposed soil
(disturbed areas) not stabilized by other methods, requires 95 % ground cover
incremental stabilization - ✔✔ correct answer Excavate and stabilize in increments less than 15',
seeding and mulching to be done as work progresses
Vegetative Stabilization-Soil Preparation - ✔✔ correct answer requires seed bed preparation and
application of lime and fertilizer in the top 3"-5"soil by disking or other means
soil stabilization matting - ✔✔ correct answer Material used to temporarily or permanently stabilize
channels or steep slopes until ground cover is established
, MD Erosion and Sediment Control
stockpile area - ✔✔ correct answer Side slopes not steeper than 2:1,
Access should be from the upslope side,
Runoff must drain to a sediment control practice
follow benching criteria when height exceeds 20 feet
earth dike - ✔✔ correct answer Directs a sediment laden water to traps, Diverts clear water away
from disturbed areas, Maximum drainage area (DA) and slope-10 acres & 10%, Dike to divert clear
water should be lined with matting or stone
temporary swale - ✔✔ correct answer Directs a sediment laden water to traps
perimeter dike/swale - ✔✔ correct answer A combination of the earth dike and temporary swale,
Handles drainage areas less than 2 acres
temporary storm drain diversion - ✔✔ correct answer A temporary swale or pipe that directs a storm
drain system into a sediment basin or trap
Used to prevent sediment laden water entering a storm drain system and redirects it to a trap or
basin
temporary asphalt berm - ✔✔ correct answer a temporary macadam mound which directs sediment
laden runoff to sediment control, intercepts and diverts clear water, and segments drainage area
clear water diversion pipe - ✔✔ correct answer Used to convey clear water in conjunction with sand
bags around a work area in a drainage way,
Pipe size depends on contributing drainage area as shown below
temporary barrier diversion - ✔✔ correct answer Diverts clear water channel flow around work area
In a drainage way,
Waterway construction permit required for a stream diversion
