Cesswi 2 Questions and Answers 100%
Solved
Sediment basin structural BMP that allows stormwater runoff to be collected and sediment
to fall out of suspension before water is allowed to undergo controlled release. Larger drainage
area
sediment trap structural BMP that provides and area for sediment laden runoff to pond,
allowing the sediment to settle out of suspension before runoff is discharged. Smaller drainage
area
Stabilized construction entrance/exit reduces the tracking of sediment onto public rights of
way. 50 ft long, 10 ft wide, 6-12in deep
temporary stream crossing comprised of a culvert, ford, or bridge that spans waterway to
provide construction traffic a safe and stable access point. Not to exceed a year of use
Diversions temporary or permanent BMPs that intercept and divert runoff to a stabilized
outlet or treatment facility. Can be vegetated , hardened with rock or concrete, or covered with
rolled E&S products
,Inlet protection at grade ex. drop inlet; BMPs that are flush to the ground. Is considered a
secondary control device
Inlet protection -block and gravel temporary BMP that promotes the settling of sediment
by pooling water. Considered a secondary control device
wet ponds are designed to remove pollutants from... post-construction runoff by way of a
permanent pool. During construction they are used for sediment removal during phases. Treat
large drainage areas
Secondary containment facilities should be regularly drained and disposed of properly so that
their capacity at any point in time is equal to 110% of the primary storage containers
permeable surfaces BMPs made of porous bituminous asphalt, porous concrete,
interlocking concrete paving blocks or grid pavers, reinforced turf, plastic grids, bricks, or grass.
The make ground surface more rigid and will allow for infiltration. provide water quality and
groundwater recharge benefits.
, permeable pavement does not work well in ______ soils Clay (D soils)
infiltration basins/ponds consists of a shallow impoundment, which is designed to
infiltrate stormwater into soil. Increases baseflow of streams due to ground water recharging
infiltration trench BMP that is a rock filled trench with no outlet that receives stormwater
runoff. Stormwater is passed through a combination of pretreatment measures (swale, basin) then
into trench where it is stored in a void space and then infiltrates into soil.
infiltration trenches treat small sites less than 5 acres
bioretention features plants, specialized soils and mulches to provide onsite treatment of
stormwater runoff. They collect surface runoff and serve as water quality and quantity BMP
sand and organic filters 2 celled or chambered BMP; 1st cell settles large pollutants, 2nd
cell acts as filtering device (sand). Treat up to 10 Acres. Does not discharge to groundwater
system or soils.
Solved
Sediment basin structural BMP that allows stormwater runoff to be collected and sediment
to fall out of suspension before water is allowed to undergo controlled release. Larger drainage
area
sediment trap structural BMP that provides and area for sediment laden runoff to pond,
allowing the sediment to settle out of suspension before runoff is discharged. Smaller drainage
area
Stabilized construction entrance/exit reduces the tracking of sediment onto public rights of
way. 50 ft long, 10 ft wide, 6-12in deep
temporary stream crossing comprised of a culvert, ford, or bridge that spans waterway to
provide construction traffic a safe and stable access point. Not to exceed a year of use
Diversions temporary or permanent BMPs that intercept and divert runoff to a stabilized
outlet or treatment facility. Can be vegetated , hardened with rock or concrete, or covered with
rolled E&S products
,Inlet protection at grade ex. drop inlet; BMPs that are flush to the ground. Is considered a
secondary control device
Inlet protection -block and gravel temporary BMP that promotes the settling of sediment
by pooling water. Considered a secondary control device
wet ponds are designed to remove pollutants from... post-construction runoff by way of a
permanent pool. During construction they are used for sediment removal during phases. Treat
large drainage areas
Secondary containment facilities should be regularly drained and disposed of properly so that
their capacity at any point in time is equal to 110% of the primary storage containers
permeable surfaces BMPs made of porous bituminous asphalt, porous concrete,
interlocking concrete paving blocks or grid pavers, reinforced turf, plastic grids, bricks, or grass.
The make ground surface more rigid and will allow for infiltration. provide water quality and
groundwater recharge benefits.
, permeable pavement does not work well in ______ soils Clay (D soils)
infiltration basins/ponds consists of a shallow impoundment, which is designed to
infiltrate stormwater into soil. Increases baseflow of streams due to ground water recharging
infiltration trench BMP that is a rock filled trench with no outlet that receives stormwater
runoff. Stormwater is passed through a combination of pretreatment measures (swale, basin) then
into trench where it is stored in a void space and then infiltrates into soil.
infiltration trenches treat small sites less than 5 acres
bioretention features plants, specialized soils and mulches to provide onsite treatment of
stormwater runoff. They collect surface runoff and serve as water quality and quantity BMP
sand and organic filters 2 celled or chambered BMP; 1st cell settles large pollutants, 2nd
cell acts as filtering device (sand). Treat up to 10 Acres. Does not discharge to groundwater
system or soils.
