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Stormwater Management Inspector Prep Exam Questions and Answers
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Stormwater Management Inspector Prep Exam Questions and Answers
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Stormwater Management Inspector PrepExam Questions and Answers
What iiare iithe iitypes iiof iidisconnection iiallowed iifor iirooftop iidisconnection? ii- iiAnswers
ii-1) iisimple iidisconnection ii- iirooftops iiand/or iion-lot iiresidential iiimpervious iisurfaces
iiare iidirected iito iipervious iiareas
2) iidisconnection iileading iito iian iialternative iirunoff iireduction iipractice iiadjacent iito iithe
iiroof ii(ex: iisoil iicompost iiamended iifilter iipath)
Why iihave iia iirooftop iidisconnection iito iian iialternative iipractice? ii- iiAnswers ii--lot iisize
iitoo iismall
-filter iiwidth iiis iitoo iinarrow
-need iimore iiwater iiquality iicredit
Functions iiprovided iiby iisimple iirooftop iidisconnection ii- iiAnswers ii--annual iirunoff
iivolume iireduction
-total iiphosphorus iimass iiload iiremoval
-total iinitrogen iimass iiload iiremoval
Alternative iirooftop iidisconnection iitypes ii- iiAnswers ii--soil iicompost-amended iifilter
iipath
-dry-well iior iifrench iidrain
-rain-garden//front iiyard iibioretention
-rainwater iiharvesting//cistern
-stormwater iiplanter
How iidoes iisheet iiflow iito iia iivegetated iifilter iistrip iior iiconserved iiopen iispace iiwork? ii-
iiAnswers ii-Filter iistrips iiare iivegetated iiareas iithat iitreat iisheet iiflow iidelivered iifrom
iiadjacent iiimpervious iiand iimanaged iiturd iiareas iiby iislowing iirunoff iivelocities iiand
iiallowing iisediment iiand iiattached iipollutants iito iisettle iiand/or iibe iifiltered iiby iithe
iivegetation
Gravel iidiaphragm ii- iiAnswers ii--pretreatment iidevice
-maintains iisheet iiflow
-not iinecessary iiif iicontributing iidrainage iiarea iiis iisolely iiturf
-trench iiis ii2 iift. iiwide iiand ii1 iift. iideep
-runs iion iisame iicontour iiat iitop iiof iifilter iistrip
-drop iiat iileast ii3 iiinches
-fabric iibetween iigravel iiand iisoil
Engineered iilevel iispreader ii- iiAnswers ii--forebay: iimax. ii3ft. iideep, iitransition iito ii1 iift. iiat
iilevel iispreader iilip
,-level iispreader iilip ii- iiconcrete, iiwood, iior iiprefabricated iimetal, iiwith iia iiwell iianchored
iifooter, iior iiother iiaccepted iirigid, iinon-erodible iimaterial
-location: ii3-6 iiinches iiabove iidownstream iinatural iigrade iito iiavoid iiturf iibuildup
-3ft. iiof iiVDOT ii#3 iistone, iiunderlain iiby iifilter iifabric iijust iibelow iispreader
-vegetated iireceiving iiarea iimust iibe iistabilized
Construction iisequence iifor iiconserved iiopen iispace ii- iiAnswers ii-- iino iiclearing,
iigrading, iiheavy iiequipment
-protect iiarea iiduring iiconstruction
-prevent iisediment iidischarge
-mark iilimits iiof iidisturbance
-drainage iiarea iistabilized
-grade iiwith iitracked iivehicles
-install iigravel iidiaphragm iiand/or iilevel iispreader
-mark iifilter iiboundaries
-keep iivehicles iiout
-stockpile iitopsoil iifor iilater iiuse
-divert iiconstruction iirunoff
-install iigravel iidiaphragm iiand/or iilevel iispreader
-grade iiwith iitracked iivehicles
-open iito iirunoff iionce iistabilized
Maintenance iiof iiVegetated iiFilter iiStrips ii- iiAnswers ii-minimal; iispring iicleanup, iiregular
iimowing, iicheck iidam iirepairs, iiand iiother iimethods iiof iimaintaining iihydraulic iiefficiency
Grass iichannel iidesign iicriteria ii- iiAnswers ii--the iibottom iiwidth iiof iithe iichannel iishould
iibe iibetween ii4-8 iifeet iiwide
-the iichannel iiside-slopes iishould iibe ii3H:1V iior iiflatter
-the iimaximum iitotal iicontributing iidrainage iiarea iito iiany iiindividual iigrass iichannel iiis ii5
iiacres
-the iilongitudinal iislope iiof iithe iichannel iiis ii<4%
-max iiflow iivelocity iiof iichannel iimust iibe ii<1ft/sec iiduring iia ii1 iiinch iistorm iievent
-the iidimensions iiof iithe iichannel iishould iiensure iithat iiflow iivelocity iiis iinon-erosive
iiduring iithe ii2-yr iiand ii10-yr iidesign iistorm iievents iiand iithe ii10-yr iidesign iiflow iiis
iicontained iiwithin iithe iichannel
Grass iichannel iipretreatment ii- iiAnswers ii--check iidams
-tree iicheck iidams
-grass iifilter iistrip
-gravel iior iistone iidiaphragm
-gravel iior iistone iiflow iispreaders
Check iidams ii- iiAnswers ii--Purpose: iibreak-up iislopes iiand iiincrease iitime iiwater iistays
iiin iichannel ii
max iidesired iiheight ii12-18 iiin
-averaging iiponding iidepth: ii12 iiin
, -armoring iimay iibe iineeded iidownstream
-anchored iiinto iiside iislopes iiand iibottom
-center iiweir iito iipass ii10-year iistorm
-weep iihole iior iisimilar iidrainage iifor iidewatering, iicomposed iiof
iiwood/concrete/stone/other iinon-erodible iimaterial
Grass iiChannel iiconstruction iisequence ii- iiAnswers ii--protect iiarea iiduring iiconstruction
-stabilize iidrainage iiarea
-grade iito iifinal iidimensions
-install iicheck iidams, iipre-treatment
-soil iicompost iiamendments
-prepare iiplanting iiholes
Soil iiTesting iibefore iiSoil iiCompost iiAmendments ii- iiAnswers ii-1st iitest:
-conducted iievery ii5000 iisq. iift. iito iidetermine iisoil iiproperties
2nd iitest:
-taken iiat iileast ii1 iiweek iiafter iicompost iihas iibeen iiincorporated iito iidetermine iiif iifurther
iiamendments iiare iineeded
-test iiduring iifinal iiconstruction iiinspection iito iiensure iitilling iior iisubsoiling iihas iiachieved
iidesign iidepth
Construction iiSequence iifor iiSoil iiCompost iiAmendment ii- iiAnswers ii--Step ii1: iideep iitill
ii2-3 iift. iito iicreate iirips iiperpendicular iito iithe iidirection iiof iiflow
-Step ii2: iideep iitill iiagain iito iia iidepth iiof ii12-18 iiinches iiafter iifinal iibuilding iilots iihave
iibeen iigraded
-Step ii3: iiconditions iimust iibe iidry iibefore iiincorporating iicompost
-Step ii4: iiIncorporate iicompost iimix iiusing iiroto-tiller
-Step ii5: iiLevel iisite, iiseed, iior iisod iito iiestablish iivigorous iigrass iicover// iilime iior
iiirrigation iias iineeded
-Step ii6: iiAreas iiexceeding ii2500 iisq. iift. iishould iiemploy iisimple iierosion iicontrol
iimeasures, iisuch iias iisilt iifence, iito iireduce iithe iipotential iifor iierosion iiand iitrap
iisediment
Vegetated iirooftops ii(aka iiecoroofs, iiliving iiroofs, iior iigreen iiroofs) ii- iiAnswers ii-
alternative iiroof iisurfaces iithat iitypically iiconsist iiof iiwaterproofing iiand iidrainage
iimaterials iiand iian iiengineered iigrowing iimedia iithat iiis iidesigned iito iisupport iiplant
iigrowth. iithey iitemporarily iicapture iiand iitemporarily iistore iistormwater iirunoff iiin iithe
iigrowing iimedia iibefore iiit iiis iiconveyed iiinto iithe iistorm iidrain iisystem
intensive iivegetated iirooftops ii- iiAnswers ii--deeper iigrowing iimedia iilayer iithat iiranges
iifrom ii6 iiinches iito ii4 iift iithick ii
-planted iiwith iia iivariety iiof iiplants, iiincluding iitrees
extensive iivegetated iirooftops ii- iiAnswers ii--shallower iigrowing iimedia iilayer iithat
iiranges iifrom ii2-6 iiinches iithick
-planted iiwith iicarefully iiselected iidrought iitolerant iivegetation
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