Submitreport
to:
CityofLynchburg
525TaylorStreet
Lynchburg,Virginia24501
Attn:StormwaterBMP
4344554250
DRYSWALES:O&MCHECKLISTVirginiaStormwaterManagementHandbook,
Chapter9C.11.0.
InspectionDate
Project SitePlan/PermitNumber
Location DateBMPPlacedinService
DateofLastInspectionInspector
Owner/Owner’sRepresentative
AsBuiltPlansavailable: Y/N
FacilityType:Level1____________________________Level2
FacilityLo
cation:
Surface
Underground
FiltrationMedia:
Nofiltration(e.g.,drywell,permeablepavement,infiltrationfacility,etc.
Sand
BioretentionSoil
Peat
Other:_____________________
HydraulicConfiguration:
Onlinefacility
Offlinefacility
TypeofPreTreatmentFacility:
Sedimentforebay(aboveground)
Sedimenta
tionchamber
Plungepool
Stonediaphragm
Grassfilterstrip
Grasschannel
Other:_____________________
Ideally,DrySwalesshouldbeinspectedannuallyintheSpring,triggeringsuchmaintenanceactivit iesassedimentremoval,spot
revegetation,inletstabilization,andrepairstocheckdams,underdrains andoutlets.
ElementofBMP PotentialProblem Y/N HowtoFixProblem
WhoWill
Address
Problem
Comments
Contributing
DrainageArea
Thereisexcessivetrash
anddebris
Removeimmediately
Owneror
professional
Thereisevidenceof
erosionand/orbareor
exposedsoil
Stabilizeimmediately
Owneror
professional
Thereareexcessive
landscapewasteoryard
clippings
Removeimmediatelyand
recycleorcompost
Owneror
professional
PreTreatment
andFlow
Spreaders
Thereisadequate
accesstothepre
treatmentfacility.
Establishadequateaccess Professional
Thereisexcessivetrash,
debris,orsediment.
Removeimmediately
Owneror
professional
Thereisevidenceof
erosionand/or
exposedsoil
Stabilizeimmediately
Owneror
professional
Thereisevidenceof
clogging(standing
water,noticeable
odors,waterstains,
algaeorfloatingaquatic
vegetation)
Identifyandeliminatethe
sourceoftheproblem.If
necessary,removeandclean
orreplacetheclogged
material.
Professional
Thereisdead
vegetationorexposed
soilinthegrassfilter
Restabilizeandrevegetateas
necessary
Owneror
professional
Thepeagravel
diaphragmisatthe
correctlevel
Correcttheinstallation,as
needed
Professional
InletandSwale
SidesandBase
Theinletprovidesa
stableconveyanceinto
theswale
Stabilizeimmediately,as
needed,andclearblockages.
Owneror
professional
Thereisexcessivetrash,
debris,orsediment.
Removeimmediately
Owneror
professional
Thereisevidenceof
erosionatoraround
theinlet
Repairerosiondamageand
reseed
Owneror
professional
CheckDams
Acheckdamisnot
functioningproperly.
Checkupstreamand
downstreamsidesofcheck
damsforevidenceof
undercutting,sidecuttingor
erosionandrepair
immediately.
Professional
Thereisalarge
accumulationof
sedimentor
trash/debrisbehindthe
checkdam.
Removesedimentwhenthe
accumulationexceeds25%of
theoriginalTv.Remove
trash/debrisandclear
blockagesofweepholes.
Professional
Invasivespeciesor
weedsmakeupatleast
Removeinvasivespeciesand
excessiveweedsimmediately
Owneror
professional
ElementofBMP PotentialProblem Y/N HowtoFixProblem
WhoWill
Address
Problem
Comments
Vegetation
10%ofthefacility’s
vegetation
andreplacevegetationas
needed.
Treesformanoverhead
canopythatmaydrop
leaflitter,fruitand
othervegetative
materialsthatmay
causeclogging.
Pruneorremovevegetation
andorganiclitterasnecessary.
Owneror
professional
Grassheightisnot
consistentwith
standards.
DrySwalesmustbemowedto
keepgrassataheightof4”to
9”.Removegrassclippings
aftermowing.
Owneror
professional
Thegrasscoverisnot
denseenoughoris
deadordying
Increasewateringandreseed,
ifnecessary,tomaintain95%
turfcover,butavoidusing
chemicalfertilizersunless
absolutelynecessary.Replace
saltkilledvegetationwithsalt
tolerantspecies.
Professional
FilterMedia/Soil
Thereisevidencethat
chemicals,fertilizers,
and/oroilarepresent
Removeundesirablechemicals
frommediaandfacility
immediately,andreplace
mulchormediaasneeded
Professional
Thereisexcessivetrash,
debris,orsediment.
Removetrashanddebris
immediately.Checkplant
healthand,withoutdamaging
plants,manuallyremovethe
sediment,especiallyifthe
depthexceeds20%ofthe
facility’sdesigndepth.
Owneror
professional
Thereisevidenceof
erosionand/or
exposedsoil
Stabilizeimmediately
Owneror
professional
Thereisevidencethat
chemicals,fertilizers,
and/oroilarepresent
Removeundesirablechemicals
frommediaimmediately,and
replacemulchormediaas
needed
Professional
Underdrain
Theperforatedpipeis
notconveyingwateras
designed
Determineifthepipeis
cloggedwithdebrisorif
woodyrootshavepiercedthe
pipe.Immediatelycleanoutor
replacethepipe,asnecessary.
Professional
ElementofBMP PotentialProblem Y/N HowtoFixProblem
WhoWill
Address
Problem
Comments
Theunderlyingsoil
interfaceisclogged
(thereisevidenceon
thesurfaceofsoil
crusting,standing
water,thefacilitydoes
notdewaterbetween
storms,orwaterponds
onthesurfaceofbasin
formorethan48hours
afteranevent).
Measurethedrawdownrate
oftheobservation
wellfor
threedaysfollowingastorm
eventinexcessof1/2inchesin
depth..Afterthreedays,if
thereisstandingwaterontop
butnotintheunderdrain,this
indicatesacloggedsoillayer.If
standingwaterisbothonthe
surfaceandintheunderdrain,
thentheunderdrain
is
probablyclogged.Thisshould
bepromptlyinvestigatedand
remediatedtorestoreproper
filtration.Gradingchanges
maybeneededorunderdrain
repairsmade.
Professional
Outlet
Outletsareobstructed
orerosionandsoil
exposureisevident
belowtheoutlet.
Removeobstructionsand
stabilizeerodedorexposed
areas.
Owneror
Professional
Thereisexcessivetrash,
debris,orsedimentat
theoutlet
Removeimmediately,and
keepthecontributingareafree
oftrashanddebris.
Owneror
professional
Overall
Accesstothe
Infiltrationfacilityorits
componentsis
adequate
Establishadequateaccess.
Removewoodyvegetationand
debristhatmayblockaccess.
Ensurethathardwarecanbe
openedandoperated.
Professional
Mosquitoproliferation
Eliminatestagnantpoolsand
establishvegetation;treatfor
mosquitoesasneeded.If
spraysareconsidered,thena
mosquitolarvicide,suchas
Bacillusthurendensisor
Altosideformulationscanbe
appliedonlyifabsolutely
necessary.
Owneror
professional
Complaintsfromlocal
residents
Correctrealproblems.
Owneror
professional
Encroachmentonthe
swaleoreasementby
buildingsorother
structures
Informinvolvedproperty
ownersofBMPsstatus;clearly
marktheboundariesofthe
receivingperviousarea,as
needed
Owneror
professional