CESSWI Part 2 Solved 100% Correct
Baffles desc/purp - ANSWER-structural bmps designed to legnthen the flow path of
basins, traps, ponds as well as slowing flow to allow pollutants time to fall out of
suspension.
May be solid , or porous.
baffles inspection - ANSWER-inspect according to regulatory times tables
structural integrity of materials
proper installation as called in plan/swppp
weir width adjusted for expected flow
sediment build up behind baffles
accumulation of trash and debris
baffles maintenence - ANSWER-maintain weir size per plan
repair structural baffle materials when necessary
prevent trash build up
baffles objectives - ANSWER-sediment control
post construction mgmt
good housekeeping/materials mgmt
Bmps designed for sediment control - ANSWER-1) baffles
2)Cut-back curbs
3) fiber rolls
4) sediment bags
5) temp stream crossing
6) sediment basins
7) sediment traps
8) silt fence
9) skimmers
10) stabilized entrances and exits
11) turbidity curtains
Bmps used for erosion control - ANSWER-1) hydromulch
2) Hydroseed
3) Mulching
4) RECP
5) seeding
6) Sod
7) Soil binders
8) surface roughening
9) tackifiers
,Concrete wash out area: applications - ANSWER-1) concrete vehicles/equipment are
washed out on-site
2) where fresh concrete or concrete waste must be disposed of on-site
Concrete wash out area: Descrip & purl - ANSWER-structural bmp that contains
concrete removed form vehicles/equipment by washing and prevents it from entering
storm drains or water bodies. these washout areas may exist with or without linings.
Concrete wash out area: imp consid - ANSWER-1) high ph and presence of
metals(chromium etc. ) concrete wash out areas should be installe sonly after the
environmental sensitivity of the area has been carefully considered(drain inlets,
waterbodies, high water table, etc)
2) when these areas are not needed, the dried and hardened concrete should be
disposed and washout area removed
Concrete wash out area: inspect - ANSWER-1) installed as shown on plans/swppp
2) seepage from washout area
3) signage from washout area
4) signage indicating the location
5) accessibility by vehicles
6) monitoring of site-including training of personnel
Concrete wash out area: limitations - ANSWER-1) only as effective as training of
employees, subcontractors, and suppliers in the use of the bmp
2) access and placement of the bmp-allows
3) proper disposal of removed material
Concrete wash out area: Maint - ANSWER-1) integrity of the washout area
2) remove dried concrete
3) if applicable, maintain the stabilized entrance leading to the washout area
Concrete wash out area: object - ANSWER-1) good housekeeping/materials
management
Concrete wash out area: Pot assoc bmps - ANSWER-1) seeding
2) secondary containment
3) Equip maint and cleaning
4) materials management
Concrete wash out area: Target pollute - ANSWER-1) metals
2) ph
cut back curb desc/purp - ANSWER-temp bmps that create a place for water to pond at
the back of the curb while allowing full site access
, cut back curb objectives - ANSWER-sediment control
cut back curbs applications - ANSWER-behind existing curbs where no sidewalk exists
at site perimeters
cut back curbs inspection - ANSWER-proper depth of cutback
erosion of soil under roadways curbs and s/w adj to cutback
accumulated sediment
accumulated trash
cut back curbs maintainence - ANSWER-proper depth
remove accumulated seidment when it reachs 1/2" to 1/3" depth
keep free of trash and debris
Diversions: Applications - ANSWER-1) divert run on water away from disturbed areas
2) above existing disturbed slopes and cut or fill slopes
3) across unprotected slopes to reduce slope length
4)diversion of sediment laden water
5)construction perimeter
Diversions: Descr & Purp - ANSWER-temp or permanent, structural bmps that are
utilized to intercept and divert run on/off site water and off site runoff to a stabilized
outlet or treatment practice.
Diversions: Limitations - ANSWER-1) downstream flooding
2) freezing weather
3) violation of local/state run off regulations
4) topographic features
Diversions: targeted pollutants - ANSWER-1) sediment
Diversions:Imple consid - ANSWER-1) they should be sufficiently sized
2) outfall protection
3) vegetated channels should be used whenever possible
4) look at velocity within the channel and provide temp stabilization
Diversions:inspect - ANSWER-1) installed as shown on plan/swppp
2) the presence of trash debris, or sediment accumulation
3) proper function of energy dissipation devices
4) sufficient vegetation to reduce erosion
5) evidence of over-topping
6) presence of erosion at bends/grade changes
Diversions:Maint - ANSWER-1) ensure adequate stabilization of erosion areas
2) repair damage to lining materials as needed
3) repair damage (rills, gullies)when encountered
Baffles desc/purp - ANSWER-structural bmps designed to legnthen the flow path of
basins, traps, ponds as well as slowing flow to allow pollutants time to fall out of
suspension.
May be solid , or porous.
baffles inspection - ANSWER-inspect according to regulatory times tables
structural integrity of materials
proper installation as called in plan/swppp
weir width adjusted for expected flow
sediment build up behind baffles
accumulation of trash and debris
baffles maintenence - ANSWER-maintain weir size per plan
repair structural baffle materials when necessary
prevent trash build up
baffles objectives - ANSWER-sediment control
post construction mgmt
good housekeeping/materials mgmt
Bmps designed for sediment control - ANSWER-1) baffles
2)Cut-back curbs
3) fiber rolls
4) sediment bags
5) temp stream crossing
6) sediment basins
7) sediment traps
8) silt fence
9) skimmers
10) stabilized entrances and exits
11) turbidity curtains
Bmps used for erosion control - ANSWER-1) hydromulch
2) Hydroseed
3) Mulching
4) RECP
5) seeding
6) Sod
7) Soil binders
8) surface roughening
9) tackifiers
,Concrete wash out area: applications - ANSWER-1) concrete vehicles/equipment are
washed out on-site
2) where fresh concrete or concrete waste must be disposed of on-site
Concrete wash out area: Descrip & purl - ANSWER-structural bmp that contains
concrete removed form vehicles/equipment by washing and prevents it from entering
storm drains or water bodies. these washout areas may exist with or without linings.
Concrete wash out area: imp consid - ANSWER-1) high ph and presence of
metals(chromium etc. ) concrete wash out areas should be installe sonly after the
environmental sensitivity of the area has been carefully considered(drain inlets,
waterbodies, high water table, etc)
2) when these areas are not needed, the dried and hardened concrete should be
disposed and washout area removed
Concrete wash out area: inspect - ANSWER-1) installed as shown on plans/swppp
2) seepage from washout area
3) signage from washout area
4) signage indicating the location
5) accessibility by vehicles
6) monitoring of site-including training of personnel
Concrete wash out area: limitations - ANSWER-1) only as effective as training of
employees, subcontractors, and suppliers in the use of the bmp
2) access and placement of the bmp-allows
3) proper disposal of removed material
Concrete wash out area: Maint - ANSWER-1) integrity of the washout area
2) remove dried concrete
3) if applicable, maintain the stabilized entrance leading to the washout area
Concrete wash out area: object - ANSWER-1) good housekeeping/materials
management
Concrete wash out area: Pot assoc bmps - ANSWER-1) seeding
2) secondary containment
3) Equip maint and cleaning
4) materials management
Concrete wash out area: Target pollute - ANSWER-1) metals
2) ph
cut back curb desc/purp - ANSWER-temp bmps that create a place for water to pond at
the back of the curb while allowing full site access
, cut back curb objectives - ANSWER-sediment control
cut back curbs applications - ANSWER-behind existing curbs where no sidewalk exists
at site perimeters
cut back curbs inspection - ANSWER-proper depth of cutback
erosion of soil under roadways curbs and s/w adj to cutback
accumulated sediment
accumulated trash
cut back curbs maintainence - ANSWER-proper depth
remove accumulated seidment when it reachs 1/2" to 1/3" depth
keep free of trash and debris
Diversions: Applications - ANSWER-1) divert run on water away from disturbed areas
2) above existing disturbed slopes and cut or fill slopes
3) across unprotected slopes to reduce slope length
4)diversion of sediment laden water
5)construction perimeter
Diversions: Descr & Purp - ANSWER-temp or permanent, structural bmps that are
utilized to intercept and divert run on/off site water and off site runoff to a stabilized
outlet or treatment practice.
Diversions: Limitations - ANSWER-1) downstream flooding
2) freezing weather
3) violation of local/state run off regulations
4) topographic features
Diversions: targeted pollutants - ANSWER-1) sediment
Diversions:Imple consid - ANSWER-1) they should be sufficiently sized
2) outfall protection
3) vegetated channels should be used whenever possible
4) look at velocity within the channel and provide temp stabilization
Diversions:inspect - ANSWER-1) installed as shown on plan/swppp
2) the presence of trash debris, or sediment accumulation
3) proper function of energy dissipation devices
4) sufficient vegetation to reduce erosion
5) evidence of over-topping
6) presence of erosion at bends/grade changes
Diversions:Maint - ANSWER-1) ensure adequate stabilization of erosion areas
2) repair damage to lining materials as needed
3) repair damage (rills, gullies)when encountered
