Storm Water Management Inspector Exam Newest
2026 Questions and Correct Detailed Answers Already
Graded A+
Grass Channel construction sequence - CORRECT ANSWER--protect area
during construction
-stabilize drainage area
-grade to final dimensions
-install check dams, pre-treatment
-soil compost amendments
-prepare planting holes
Soil Testing before Soil Compost Amendments - CORRECT ANSWER-1st test:
-conducted every 5000 sq. ft. to determine soil properties
2nd test:
-taken at least 1 week after compost has been incorporated to determine if
further amendments are needed
-test during final construction inspection to ensure tilling or subsoiling has
achieved design depth
,Construction Sequence for Soil Compost Amendment - CORRECT ANSWER--
Step 1: deep till 2-3 ft. to create rips perpendicular to the direction of flow
-Step 2: deep till again to a depth of 12-18 inches after final building lots have
been graded
-Step 3: conditions must be dry before incorporating compost
-Step 4: Incorporate compost mix using roto-tiller
-Step 5: Level site, seed, or sod to establish vigorous grass cover// lime or
irrigation as needed
-Step 6: Areas exceeding 2500 sq. ft. should employ simple erosion control
measures, such as silt fence, to reduce the potential for erosion and trap
sediment
Vegetated rooftops (aka ecoroofs, living roofs, or green roofs) - CORRECT
ANSWER-alternative roof surfaces that typically consist of waterproofing and
drainage materials and an engineered growing media that is designed to support
plant growth. they temporarily capture and temporarily store stormwater runoff
in the growing media before it is conveyed into the storm drain system
intensive vegetated rooftops - CORRECT ANSWER--deeper growing media
layer that ranges from 6 inches to 4 ft thick
-planted with a variety of plants, including trees
,extensive vegetated rooftops - CORRECT ANSWER--shallower growing media
layer that ranges from 2-6 inches thick
-planted with carefully selected drought tolerant vegetation
Construction sequence for vegetated roof - CORRECT ANSWER--Step 1:
construct the roof deck with the appropriate slope and material
-Step 2: install the waterproofing method/material
-Step 3: Conduct a flood test to ensure the system is water tight by placing at
least 2 inches of water over the membrane for 48 hours to confirm
-Step 4: add additional system components//drain collars and protective flashing
should be installed to ensure free flow of excess stormwater
-Step 5: growing media should be mixed before delivery// spread media evenly
over filter fabric surface// cover until planted to prevent weeds from growing//
limit foot and equipment traffic
-Step 6: moisten growing media prior to planting// plant according to plan//water
plants immediately and routinely during establishment
-Step 7: 12-18 mo. to fully establish vegetated roof; temporary washing may be
needed during first summer; hand weed during first two years
Step 8: Care and replacement warranty should specifiy 75% minimum survival
after the first growing season of species planted and a minimum effective
vegetative ground cover of 75% for flat roofs and 90% for pitched roofs
, What are the types of disconnection allowed for rooftop disconnection? -
CORRECT ANSWER-1) simple disconnection - rooftops and/or on-lot residential
impervious surfaces are directed to pervious areas
2) disconnection leading to an alternative runoff reduction practice adjacent to
the roof (ex: soil compost amended filter path)
Why have a rooftop disconnection to an alternative practice? - CORRECT
ANSWER--lot size too small
-filter width is too narrow
-need more water quality credit
Functions provided by simple rooftop disconnection - CORRECT ANSWER--
annual runoff volume reduction
-total phosphorus mass load removal
-total nitrogen mass load removal
Alternative rooftop disconnection types - CORRECT ANSWER--soil compost-
amended filter path
-dry-well or french drain
-rain-garden//front yard bioretention
-rainwater harvesting//cistern
2026 Questions and Correct Detailed Answers Already
Graded A+
Grass Channel construction sequence - CORRECT ANSWER--protect area
during construction
-stabilize drainage area
-grade to final dimensions
-install check dams, pre-treatment
-soil compost amendments
-prepare planting holes
Soil Testing before Soil Compost Amendments - CORRECT ANSWER-1st test:
-conducted every 5000 sq. ft. to determine soil properties
2nd test:
-taken at least 1 week after compost has been incorporated to determine if
further amendments are needed
-test during final construction inspection to ensure tilling or subsoiling has
achieved design depth
,Construction Sequence for Soil Compost Amendment - CORRECT ANSWER--
Step 1: deep till 2-3 ft. to create rips perpendicular to the direction of flow
-Step 2: deep till again to a depth of 12-18 inches after final building lots have
been graded
-Step 3: conditions must be dry before incorporating compost
-Step 4: Incorporate compost mix using roto-tiller
-Step 5: Level site, seed, or sod to establish vigorous grass cover// lime or
irrigation as needed
-Step 6: Areas exceeding 2500 sq. ft. should employ simple erosion control
measures, such as silt fence, to reduce the potential for erosion and trap
sediment
Vegetated rooftops (aka ecoroofs, living roofs, or green roofs) - CORRECT
ANSWER-alternative roof surfaces that typically consist of waterproofing and
drainage materials and an engineered growing media that is designed to support
plant growth. they temporarily capture and temporarily store stormwater runoff
in the growing media before it is conveyed into the storm drain system
intensive vegetated rooftops - CORRECT ANSWER--deeper growing media
layer that ranges from 6 inches to 4 ft thick
-planted with a variety of plants, including trees
,extensive vegetated rooftops - CORRECT ANSWER--shallower growing media
layer that ranges from 2-6 inches thick
-planted with carefully selected drought tolerant vegetation
Construction sequence for vegetated roof - CORRECT ANSWER--Step 1:
construct the roof deck with the appropriate slope and material
-Step 2: install the waterproofing method/material
-Step 3: Conduct a flood test to ensure the system is water tight by placing at
least 2 inches of water over the membrane for 48 hours to confirm
-Step 4: add additional system components//drain collars and protective flashing
should be installed to ensure free flow of excess stormwater
-Step 5: growing media should be mixed before delivery// spread media evenly
over filter fabric surface// cover until planted to prevent weeds from growing//
limit foot and equipment traffic
-Step 6: moisten growing media prior to planting// plant according to plan//water
plants immediately and routinely during establishment
-Step 7: 12-18 mo. to fully establish vegetated roof; temporary washing may be
needed during first summer; hand weed during first two years
Step 8: Care and replacement warranty should specifiy 75% minimum survival
after the first growing season of species planted and a minimum effective
vegetative ground cover of 75% for flat roofs and 90% for pitched roofs
, What are the types of disconnection allowed for rooftop disconnection? -
CORRECT ANSWER-1) simple disconnection - rooftops and/or on-lot residential
impervious surfaces are directed to pervious areas
2) disconnection leading to an alternative runoff reduction practice adjacent to
the roof (ex: soil compost amended filter path)
Why have a rooftop disconnection to an alternative practice? - CORRECT
ANSWER--lot size too small
-filter width is too narrow
-need more water quality credit
Functions provided by simple rooftop disconnection - CORRECT ANSWER--
annual runoff volume reduction
-total phosphorus mass load removal
-total nitrogen mass load removal
Alternative rooftop disconnection types - CORRECT ANSWER--soil compost-
amended filter path
-dry-well or french drain
-rain-garden//front yard bioretention
-rainwater harvesting//cistern
