jkw methodology
TRANSCRIPT
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Activeingredient:Thechemicalcomponentofaherbicidethatactually
killsordebilitatestheplant.
Axil:Theanglebetweentheleafstalkofaplantand
thestem.
BASIS:Aqualificationoftechnicalcompetenceforpeople
whouse,store,selloradviseontheuseof
pesticides.BASISisanorganisationcommittedto
makingsurepeopleinvolvedinhandlingandusingpesticidesarecompetent.BASISmaintainaregister
oftrainedadvisors,whoneedtodemonstrate
anannualprogrammeofcontinualprofessional
developmenttomaintaintheirqualification.Details
ontheBASISProfessionalRegisterareavailable
from34,StJohnStreet,Ashbourne,DerbyshireDE6
1GH.Tel:01335343945.
Brownfield:Asitethathasbeenpreviouslyusedinamanner
thatrequiresremediationbeforeitisusedagain.Suchsitesareoftenpost-industrialsitesorderelict
buildingsandoftenhavecontaminatedlandand
otherwasteissuesassociatedwiththem.
Bund:Shallowpileofsoil,spreadouttoachieveadepthno
greaterthan1m,preferably0.5m.Bundscaneither
beonthesurface,oroccupyvoidstocreatealevel
surface.BundsshouldhavethebulkoftheJapanese
knotweedrhizomeconcentratedonthesurface,to
facilitateregrowthsuitableforherbicidetreatment.
Canes:Tall,hollow,bamboo-likestems.
Clerkofworks:PersonresponsibleformanagingalltheJapanese
knotweedonsite.Theclerkofworksoverseesthe
Japaneseknotweedmanagementplanandensures
allstaffonsiteareawareoftheirrolewithregards
Japaneseknotweedmanagement.
ControlofPesticidesRegulations
(CoPR)1986:CoPR1986requireanypersonwhousesapesticidetotakeallreasonableprecautionstoprotectthe
healthofhumanbeings,creaturesandplants,
safeguardtheenvironmentandinparticularavoid
thepollutionofwater.Forapplicationofpesticides
inornearwaterapprovalfromtheEnvironment
Agencyshouldbesoughtbeforeuse.
Crown:Thevisiblepartoftherhizomefromwhichcanes
grow.Crownscanproducemanynewcanesand,becauseoftheirsize,canberesistanttoburningor
dryingout.
Dormant:Thestateinwhichanorganismisstillalive,but
displayslittleevidenceoflife.
Dutyofcare:Section34oftheEnvironmentalProtectionAct
1990(EPA90)imposesadutyofcareonpersonsconcernedwithcontrolledwaste.Thedutyapplies
toanypersonwhoproduces,imports,carries,
keeps,treatsordisposesofcontrolledwaste,or
asabrokerhascontrolofsuchwastes.Breaching
thedutyofcareisanoffence,withapenaltyofan
unlimitedfineifconvictedonindictment.
EnvironmentalProtection
Act1990(EPA1990):EPA1990containsanumberoflegalprovisions
concerningcontrolledwaste,whicharesetoutinPartII.AnyJapaneseknotweedcontaminatedsoil
orplantmaterialthatyoudiscard,intendtodiscard
orarerequiredtodiscardislikelytobeclassifiedas
controlledwaste.Themostrelevantprovisionsarein
sections33and34.
Fly-tipping:Illegaldisposalofwasteintotheenvironment.
Glossary
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Formulation:Aparticularherbicidetradedunderaspecificname.
Differentformulationsofherbicidemaysharethe
sameactiveingredient,butaredesignedforuse
indifferentsituations.Forinstance,onlycertain
formulationsofglyphosateareapprovedforusein
ornearwater.
Greenbelt:Areaofundevelopedlandinproximitytoa
communitythathasbeenpreservedtoconservethe
aestheticbeautyofthelocation.Theseareasare
referredtoasgreenwedgesinWales.
HazardousWasteRegulations2005
(HWR2005):HWR2005containprovisionsaboutthehandlingandmovementofhazardouswaste.Consignment
notesmustbecompletedwhenanyhazardous
wasteistransferred,whichincludedetailsabout
thehazardouspropertiesandanyspecialhandling
requirements.Ifaconsignmentnoteiscompleted,
awastetransfernoteisnotnecessary.Material
containingknotweedthathasbeentreatedwith
herbicide,maybeclassifiedashazardouswaste.
Hazardouswaste: HazardousWastewastewhichbyvirtueofitscomposition,carriestheriskofdeath,injuryor
impairmentofhealth,tohumansoranimals,the
pollutionofwaters,orcouldhaveanunacceptable
environmentalimpactifimproperlyhandled,treated
ordisposedof,ascontrolledintheECDirectives
onHazardousWasteanddefinedbySpecialWaste
Regulations1996(asamended)(schedule2).
Heave:Physicaldisruptionofahardsurfacecausedbyan
upwardstress.
Hybrid:Aplantoranimalthatresultsfromreproductionby
twodifferentspecies.
Membrane:Inthiscode,membranedescribesarelativelylow
specificationprotectivelayerusedforcontaining
Japaneseknotweedwhenitisbeingtransported
(sections5.1,6.1,6.2,7.2).Comparewithrootbarriermembrane,below.
Perennial:Aplantthatcontinuesitsgrowthfromyeartoyear.
Persistentherbicide:Aherbicidethatcontainsanactiveingredient
thatwillnotbeswiftlydegradedafterithasbeenapplied.Thiscansometimeslimitthemannerin
whichtreatedsoilcanbereusedordisposedof.
Rhizome:Undergroundstem.EnablesJapaneseknotweedto
surviveover-winter,whenthecanesdieback.Small
sectionsofrhizome,aslittleas0.7gcanregrowinto
anewplant.Rhizomatous:Oforpertainingtoarhizome.
Rootbarriermembrane:Highspecificationmembraneusedforhighly
stressedshort-termprotection,suchashaulage
routes(section2.2,7.1and7.3),orcontaining
Japaneseknotweedinthelongterm(sections4,5
and8.5).Rootbarriermembranesmustbemadeofa
materialthatisfitforpurpose.Itshouldbemadeof
amaterialthatcanbe:
a) usedwithoutdamage;
b) providedinlargesizes,tominimisetheneed
forseals;
c) sealedsecurely;
d) remainintactforatleast50years(guaranteed
bythemanufacturer);
e) resistUVdamageifusedwhereitisexposed
tosunlight;
f) buriedwithoutpollutinggroundwater
fromchemicalsleachedfromit.Comparewith membrane,above.
Sett:Thesystemoftunnelsandchambersusedby
badgersandprotectedbylaw.
Tines:Longpointedteethattachedtoadiggerbucketto
rakeoutrhizome.
Viable:Capableofgrowingintoanewplant.
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Wasteexemption:Whenthedisposalofwasteisdeemednottopresent
arisktopublichealthortheenvironment.
WasteManagementLicensing
Regulations(WMLR)1994:WMLR1994describewasterelevantobjectives
inParagraph4ofSchedule4.Theseobjectives
requirethatwasteisrecoveredordisposedof
withoutendangeringhumanhealthandwithout
usingprocessesormethodswhichcouldharmthe
environmentandinparticularwithoutrisktowater,
air,soil,plantsoranimals;orcausingnuisance
throughnoiseorodours;oradverselyaffectingthe
countrysideorplacesofspecialinterest
Wasterelevantobjectives: SeeWasteManagementLicensingRegulations
(WMLR)1994,above.
WildlifeandCountryside
Act1981(WCA1981):Section14(2)statesthatifanypersonplantsor
otherwisecausestogrowinthewildanyplantwhich
isincludedinPartIIofSchedule9,heshallbeguilty
ofanoffence.Japaneseknotweedisoneofthe
plantslistedintheSchedule.
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AguidetoJapaneseknotweedrhizomeidentificationand
excavation
Finger-nailsizedsectionsofrhizome
0.7ginweightcanregenerateintoanewknotweedplant.
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AguidetoJapaneseknotweedrhizomeidentificationandexcavation
i) What is Japanese knotweed?JapaneseknotweedFallopia japonicawasintroduced
intotheUKduringthemid-nineteenthcenturyasanornamentalplant.Ithassincebecomeoneofthe
mostproblematicinvasiveweedsinEurope(see
Section1ofCode)
Japaneseknotweedisaperennialweed,producing
tallcanes,upto3m(10feet)inheightduringthe
summer.Thecaneshavecharacteristicpurpleflecks,
andproducebranchesfromnodesalongitslength.
Thesebranchessupportshovel-shapedleaves
andclustersofwhiteflowersinautumn.Thecanes
dieoffinwinter,turningbrownandsheddingtheir
leaves.Thisproducesdensemulchthatprecludesthegrowthofnativeplants.
ii) What is Japanese knotweed rhizome?Japaneseknotweedcanesgrowfromdensecrowns
thatalsoproduceextensiveundergroundstems,
calledrhizomes.Theserhizomesalsoproducefine,
white,hair-likeroots.Itishardtostatewithcertainty
thelikelyextentofrhizomespreadfromtheparent
plant.Researchhasshownthatrhizomecangrow
adistanceofatleast7m(23feet)andachieveadepthofatleast2m(6feet)fromtheparentcrown.
However,theactualextentoftherhizomecanvary
considerablydependingonthesoiltypeandthe
historyofthesite.Manyknotweedinfestationsstart
lifeasaresultoffly-tippedwaste,andrepeated
applicationsofwasteontopoftheinitialinfestation
canresultinadeepmatrixofrhizome.
Environment AgencyManagingJapaneseknotweedondevelopmentsites39
Thisguideshouldbeusedinconjunctionwiththe
EnvironmentAgencycodeofpractice,managingJapanese
knotweedondevelopmentsites.Ithasbeenproducedas
aseparateguidetofacilitateuseduringexcavations.
AppendixI
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iii) Why is it important to be able to identifyJapanese knotweed rhizome?Whilstknotweedcanregeneratefromsmall
sectionsofcane,mostknotweedintheUKarises
fromrhizomeandcrownmaterial.Finger-nailsized
sectionsofrhizome0.7ginweightcanregenerate
intoanewknotweedplant.Itappearsthattheregenerativepotentialofrhizomevaries.Thick,old
woodytissueappearstobelessabletoproduce
newgrowththancrownmaterialorthinnersucculent
rhizome.Thishasimplicationsforthoseexcavating
knotweedrhizomes,wherethereisariskofthin
terminalrhizomefromtheedgeofthecutbeing
overlooked,whichwouldhaveahigh
regenerativepotential.
Thereareoftensituationsinwhichitisnecessary
tobeabletoidentifyrhizomewithoutthebenefit
ofintactknotweedcanesforassistance.Ifa
siteisundisturbeditisfairlyeasytorecognise
characteristicsummergrowth,orthedeadwinter
canes.Ifthesitehasalreadybeenscraped,itis
necessarytoinspectthewastematerialforevidence
ofknotweed;deadcanes,leavesandrhizome,to
establishiftheweedispresentonsite.Knowledgeof
rhizomeidentificationisthenrequiredtoidentifythe
locationandextentoftheinfestation.
Thecostofknotweedmanagementcanbe
significantlyreducedifknotweedandnon-knotweedwastestreamscanbekeptseparate.Ifpoorinitial
managementofasitehasalreadyprecludedthis
option,thisshouldbeofgreatconcerntoany
subsequentdeveloper.
Wastehauliersalsoneedtotakecaretoinspect
wastematerialpriortoacceptingit(SeeSection6.2
ofCode).Soilcontainingviableknotweedmaterial
isnotsuitablefordisposalunderanexemptionfrom
Section34oftheEnvironmentalProtectionAct1990.
Section34imposesadutyofcareonapersonwho
produces,imports,carries,keeps,treatsordisposes
ofcontrolledwaste,oractsasabrokerfor
suchwastes.
iv) How do I recognise rhizome?Anidentificationchartforknotweedrhizome,and
acomparisonwithothercommonlyencountered
roots,isprovidedwithinAppendixII.Theformer
WelshDevelopmentAgency,nowpartoftheWelsh
AssemblyGovernment,hasproducedatabular
guidetotheidentificationofknotweedrhizomethatisreproducedinAppendixIIIwiththeir
kindpermission.
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Inadditiontotherhizomedescribedwithinthe
identificationchart,verynewrhizomegrowth,
delicateandwhiteinappearance,canbefoundduring
thegrowingseason.
v) How do I remove rhizome?Putsimply,removetherhizomewithextremecare.Itisimportanttoreadthecodeofpracticebefore
startingexcavation.Themajorityofknotweed
rhizomeisconfinedtothetop0.5mofsoil.Remove
thesoilbyfirstscrapingoffthecrownsandsurface
rhizomeandputtingtooneside.Crownsand
rhizomecanbedriedandburned(seeSection5.2
ofCode)priortotreatmentwiththeremainingsoil.
Crownmaterialinparticularisresistanttoburning;
thereforeitisimportanttoregardthismaterialasstill
potentiallyinfectious.
Thenext0.5-1mofsoilcanthenberemovedand
putaside,andthentheremainingsoiltoadepthof
approximately3mcanbeexcavated.Thismaterial
shouldformthebaseofabund(SeeSection5.5
ofCode),orthetoplayerofburiedmaterial(See
Sections5.4and4.1ofCode).Thisprocessof
excavationcanbeproportionedtoanydepthof
excavation,ratherthanadoptingthe3m
generaliseddepth.
Guidanceonthecontainmentandmovementofknotweed-infestedsoilisprovidedwithinSections2,
6and7oftheCodeofPractice.
Carefuluseoftheinformationwithinthisguideshould
enableoperatorstoeffectivelyinspecttheedgeof
theirexcavationforremainingrhizome.Dependingon
thehistoryofthesite,thedepthtowhichknotweed
rhizomeextendscanvarybetween0.5m10m.The
historyoftheinfestation,soiltypeandthewater
tablecanallhaveaprofoundimpactontheextentof
rhizome.Situationsinwhichrhizomeisgreaterthan
3mtendstobeassociatedwithsituationsinwhich
additionalwastehasbeenregularlydumpedonan
establishedknotweedstand,orwind-blownsandhas
createdadunesystem.
Carefulexcavationofrhizomehasthepotentialto
significantlyreducethevolumeofwasteremoved
insteadofsimplyexcavatinga7mx3mvolumeofsoil.
Italsoensureseffectiveremovalinsituationswherea
7mx3mexcavationisanunder-estimate.Inallcases
theprecautionaryapproachmustbeadoptedrather
thanriskleavingrhizomebehind.
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Notallrhizomeregeneratesinthesamemannerand
thefactorsthatdeterminerhizomeregeneration
arethesubjectofresearch.Itappearsthatolder
rhizomebecomeswoody,andtendstobeutilised
bytheplantforfoodstorage,whereasthefresh
youngrhizomeismorecarrot-likeandmuchmore
infectious.Therefore,thesmallpiecesattheextremeedgeoftherhizomeringarepotentiallythemost
infectious,andthereforerequirethegreatestofcare.
Itisgoodpracticetoexcavateanother0.5maround
theperimeterofthecutafterallrhizomehasbeen
apparentlyremovedasafurtherprecaution.
Rhizomeisanundergroundstem,ratherthanaroot,
andwilltendtospreadlaterally.Therhizomeat
theperipheryofthematrixwilltendtobeshallow,
thereforetheexcavationusuallydescribesasaucer-
shapedprofile.
Havingexcavatedtherhizomeitisessentialthat
wastestreamsarekeptseparateandthatrhizome
isnotallowedtocontaminatespoilthathasbeen
removedfromareasfreefromrhizome.
Remember:
Donotexcavaterhizomeunlessyouhaveto,especiallyifyoudonothavethe
capacitytotreatthematerialonsite.
A0.7gpieceofrhizomeisapproximatelythesize
ofyourlittlefingernail,andthismaybecapableof
growingintoanewplant.
Thematrixoftherhizomewillvaryinsizeand
extent,dependingonthenatureandhistoryofthe
site.Carefuluseofthisguidewillminimisethewaste
youproduceandsignificantlyreduceyourcosts.
Rhizomemayremaindormantforatleast20years.
Dormantrhizomemayregrowifitisdisturbed.
Lackofregrowthisnotevidenceoferadication.
Avoidspreadingrhizomebyfollowingtheguidance
givenwithintheknotweedcodeofpractice.
Ifyouspreadrhizomeintotheenvironmentyou
maybeliabletoprosecutionundertheWildlife&
CountrysideAct1981.
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Plants commonly found on development sites
External appearance of root or rhizome
Snap Test
Scrape Test
Root / rhizome identification chart - Japanese knotweed
Japanese knotweed Fallopia japonica
(and other Asiatic invasive knotweeds).Japaneseknotweediscommonlyencounteredon
brownfieldsites,wheresoildisturbanceandfly-tipping
arecommon.Closeproximitytorivers,roadsandrailways
mayalsoprovideasourceofinvasion.
Environment AgencyManagingJapaneseknotweedondevelopmentsites43
Colour:Darkbrown,lighterwhendried.
Texture:Smoothskin,becomingroughwhendesiccated.
Features:oftenforminglongknottylengths.Maysupportsmallred
buds,particularlyoncrowns(baseofstem).Finehair-like
rootscommon,particularlyonthinnersections.
Snapability:Easy.Verycarrot-likeinstructureandcolourwhenfresh.
Morewoodywhendry.Oldermaterial,particularlynear
thecrown,canbeverywoody.Colourcanvaryfromdeep
redtopaleyellow,withorangethemostcommon.Younger
freshmaterialusuallyhasadifferentcolouredcore.
Outer layer:Thinskin,easilyremovedwhenfresh.
Inner layer:Palethreadsoftenrunthroughdarkerfibrousflesh,
particularlyinlargerrhizome.Oftenvariationsincolour
throughrhizomewhensplitlengthways.Crownmaterial
isoftencakedwithsoilandcanbehardtorecognise.Cleaningshouldrevealredbudsandcharacteristicflesh.
AppendixII
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Root / Rhizome identification chart - other common plants
Plants commonly found on development sites
External appearance of root or rhizome
Snap Test
Scrape Test
Dock:
Commonondisturbedgroundandintopsoil.AgriculturalweedandcoveredbytheWeedsAct1959.Closestnative
planttoknotweed,sosimilarrootappearance.
Colour:palered/brown.
Texture:Fleshyskin.
Features:Tapering,withbranchesclusterednearthetip.Lacking
theknottyappearanceofknotweed.
Snapability:
Easy.Rubbery,butlacksthecarrot-likesnappinessof
knotweed.Coreissimilarcolourtotherestoftheroot,
lackingthecolourvariationofknotweedrhizome.
Outer layer:Thinskin,similar
toknotweed.
Inner layer:fleshy,withadistinctcore.Orange/yellowincolour,
butusuallypalerthanknotweed.
44 Environment AgencyManagingJapaneseknotweedondevelopmentsites
AppendixIII
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Plants commonly found on development sites
External appearance of root or rhizome
Snap Test
Scrape Test
Root / rhizome identification chart - knotweed
Buddleja (Butterfly bush):
Introducedshrub(intro:1890),colonisingwastegroundandmasonry.Spreadbyseed.Pink,purpleorwhite
flowers.Corkybark.Silverundersidetoleaves.
Colour:Palebrown.
Texture:Bark-like.
Features:Barkeasilydamagedandrevealingthewoodycore.
Tough.
Snapability:Verypoor.Tendstoripratherthanbreakcleanly.
Distinctcore.
Outer layer:Thinwrinkledbark.
Inner layer:Whitewood.
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Plants commonly found on development sites
External appearance of root or rhizome
Snap Test
Scrape Test
Root / rhizome identification chart - knotweed
Sycamore (and most other trees):
Treesarecommoncolonisersofwasteground.Theirrootsareoccasionallymistakenforrhizome.
Colour:Mid-brown.
Texture:Fairlysmoothandeven.
Features:Doesnotfragmentaseasilyasknotweed.Tendtoremain
intaperedsections.Finerootlets.
Snapability:Verypoor.Verywoody,tendingtobreakandtearrather
thansnap.Fairlyuniformincolourandstructure.
Outer layer:Toughbark.
Inner layer:Palecolouredwood.
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General characteristics Yes No
Twig-likeappearance
Table for the identification of Japanese knotweed rhizome
Fleshywithhardnesslikecarrot
Exterior of rhizome Yes No
Colourdarkbrown,likecoffeegranules
Textureoftheouterbarkleathery
Brittlewhenfresh,breakeasilylikecarrot
Youngrhizomeiswhiteandverysoft
Whenbarkisremoved,tissueispaleorange/yellow
Nodesat1-2cmspacing
Nodesslightlyenlargedandknotty
Atnodeswhitefibrousrootsarecommon
Ifpresent,freshbudsatnodesarered/pink
Interiorofrhizome
Longitudinal view Yes No
Colour:paleorangeandlightyellow,similartoacarrot
Centralcoreisusuallydarkorange/brown,likerust,
andsometimeshollow
Cross section Yes No
Cortexwithrayscomingfromcentre,likespokesfromawheel
TOTAL
Iftheyesscoreisgreaterthantheno
score,thentreattheidentifiedrhizome
asJapaneseknotweed.
Reproducedwithkindpermissionoftheformer
WelshDevelopmentAgency,nowpartoftheWelsh
AssemblyGovernment.
48 Environment AgencyManagingJapaneseknotweedondevelopmentsites
AppendixIV
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ManagementplanforJapaneseknotweedat:
Tableofcontents
1. INTRODUCTIONTOTHESITE 2
1.1 Descript ionofthesite
1.2 Sitemanagementobjectives
1.3 Limitationsandthreatstomanagementobjectives
1.4 Inventor yofthesite
2. OVERVIEWOFMANAGEMENTPLAN 3 2.1 Briefdescriptionofmanagementplan
2.2 Set tingpriorities
2.3 P reventingf urtherspread
3. SPECIFICCONTROLPLANSFORJAPANESEKNOTWEED 4 3.1 Managementobjectives
3.2 Managementoptions
3.3 Actionsplanned
3.4 Howactionswillbeevaluated
3.5 Resourceneeds
3.6 Resultsofevaluation
4. SUMMARYINFORMATION 5 Table1: Priorityareas
Table2: Controlmethods
Table3: Implement ationschedule
Table4: P rojectedresourcesandcos ts
5. REFERENCES 6
6. APPENDICES 7 Appendix1. SitemapsandJapaneseknotweeddistributiondaps
Appendix2. Japaneseknotweedrecordingsheet
Appendix3. Formsforcollectingmonitoringdata
Appendix4. Herbiciderecords
Appendix5. Wasterecords
Appendix6. Usefulcontacts
Periodcovered:
Prepairedby: Date:
Environment AgencyManagingJapaneseknotweedondevelopmentsites49
AppendixV
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Descriptionofthesiteboundaries,topography,access,specialfeatures:IncludemapsofsitepreandpostdevelopmentinAppendix1.
DescriptionoftheJapaneseknotweeddistributiononsiteandadjacenttothesite:IncludedetailedmapsshowinglocationofJapaneseknotweedandexactareacovered(allocateauniqueidentification
numbertoeachlocationofJapaneseknotweedonsitee.g.JK001,JK002etc).
Completearecordingsheetforeachlocation(seeAppendix2)IfJapaneseknotweedispresentonadjacentland,record
distributionanddetailsoflanduseandlandownership.
1.4 Inventory of the Site
DescriptionofhowthepresenceofJapaneseknotweedposesathreatto,orlimitsmanagementobjectives.Includeforexample: Increasingcostsofdevelopment
Delaysinschedulingofworks
Damageorpotentialdamagecausedbytheplant
PotentialforspreadofJapaneseknotweedfromwithinandoutsidethesiteboundary
(e.g.withinthesite,fromadjacentlandorviawatercourses)
PotentialforimportofJapaneseknotweedonmaterials
1.3 Limitations and Threats to Site Management Objectives
Briefdescriptionoftheexistingsite(priortoanydevelopment):Includepresenceofanynatureconservation
featurese.g.protectedspecies;vegetationtoberetained;watercourses(includeproximityofstreamsorriversifadjacenttothesite);buildingstoberetained;drainageonsite;otherrelevantfeatures.
Briefdescriptionoftheproposeddevelopment:Includeanyproposedimportorexportofsoils.
Briefdescriptionofthesitepost-development:Includeanypartsofthesitedesignatedforlandscaping,conservationareasetc.
1.1 Description of the Site
Briefdescriptionofsitemanagementobjectives:Includeproposedtimescaleandplansforrestoration/re-planting.
1.2 Site Management Objectives
Introduction to the site DRAFT TEMPLATE
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Descriptionofmethodstobeemployedtopreventfurtherspread:
Includeforexample: IsolationofJapaneseknotweedonsitebyfencingtoavoiddisturbanceduringtreatment.
Assessmentofriskofre-invasionofJapaneseknotweedfromadjacentland.
LiaisonwithadjacentlandownerstotreatJapaneseknotweedwhichposesarisktothesite.
ProcedurestoensurethatimportedmaterialsarefreefromJapaneseknotweed.
Identificationofdesignatedhaulroutesthroughsitetoavoidcontamination.
Descriptionoftrainingtobegiventositeoperatorsandcontractorsduringdevelopment:Includeforexampleidentificationoftheplant(bothaboveandbelowgroundparts)andtrainingonsitepracticesto
preventfurtherspread.
2.3 Preventing Further Spread
Examples: AreasofJapaneseknotweedonsitewhichrequirerapidtreatmentwillbeidentified.
Preventionoffurtherinfestationoftheplantonthesiteisapriority.
Replacementvegetation/habitatwillbeconsideredratherthanjusteliminatingJapaneseknotweed.
Controlmethodswhichsuitthelocationandtimescalewillbeadopted.
Implementationwillbebasedontheaboveinformation. Regularmonitoringwillbecarriedout.
Managementwillberevisedinresponsetofeedbackfromtheabove.
Assignprioritytoeachmanagementobjective:(e.g.High,MediumLow)-RecordprioritiesforeachlocationoftheplantinTable1.
2.2 Setting Priorities
AllocatepersonneltooverseeJapaneseknotweedmanagementandtoberesponsibleforsignoffat
theendofthetreatmentperiod:
Overview of weed management plan
2.1 Brief Description of Management Plan
DRAFT TEMPLATE
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Sitename:
Responsiblemanager: Dateplanlastupdated:
Brieflydescribethelocationstobetreated,materialsandmethodstobeused,andanapproximate
scheduleforcontrolandmonitoringactivities.RecorddetailsinTable2.
3.3 Actions planned (treatments and monitoring)
Viablecontroloptionsare: Notreatment;
Treatmentalternative1
Treatmentalternative2etc.
Brieflydiscussthealternatives,indicatewhicharepreferredandtheconditions(sizeofareatreated,location,timing,
totalanticipatedcost,etc.)underwhichtheymaybeused.
Buildinrestrictedflexibilitytoallowconditionsonsitetobetakenintoconsideration.Statewhothesiteoperatives
shouldcontactwhennoneofthelistedalternativescanbecarriedout.
3.2 Management options
Establishmeasurableobjectivesfortheplannedcontrolactivities.Include: theimpactondensity,cover,etc.thatyouwanttoachieve;
thesizeoftheareainwhichyouhopetoachievethis;
theperiodinwhichyouhopetoachieveit.
Examples: Objective1. EliminationofJapaneseknotweedonallpartsofthesitewithin5years.
Objective2. Reducepercentagecoverby50%on1haofthesitewithin2years.
Objective3. PreventionoffurtherspreadofJapaneseknotweedonsite. Objective4. Co-ordinationwithadjacentlandownerstocommenceactivetreatmentofJapaneseknotweedin
adjacentareaswithin1year.
3.1 Management objectives (measurable)
Specific control plans for Japanese knotweed
Outlinethemethodsthatwillbeusedtomonitorcontrolactivitiesandthecriteriathatwillbeusedto
evaluatesuccessorfailureoftheprogram.Thecriteriaforsuccessshouldbebasedontheprogramsobjectivesand
goals.(DatasheetstobeusedwhencollectingmonitoringdatashouldbeincludedinAppendix3).
3.4 How actions will be evaluated (criteria for success)
Estimatetheamountoftimeforstaff,materials,contractorsetc.andmoneythatwillberequiredtocarry
outtheplannedcontrol,monitoringandevaluation.RecordinTable4.
3.5 Resource needs
Thissectionistobefilledinlater,preferablywithin1year,whenmonitoringdatahasbeentakenand
evaluated.Theevaluationshouldbeusedtodeterminewhetheranyofthesections3.1-3.5aboveshouldbemodified.
3.6 Results of evaluation
DRAFT TEMPLATE
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Summary information
Table 1 - Priority areas
Area Descriptionandjustificationsofpriority Prioritylevel
Table 2 - Control Methods
Area ControlMethod Carriedoutby
Table 3 - Implementation Schedule
Scheduletheplanning,surveying,andtreatmentforJapaneseknotweedforatleastthenextyear.
TreatmentSchedule Date
Table 4 - Projected resources and costsRevisethistableannuallyaftercomparingestimatedtoactualcosts.
Item Description Projectedresources Projectedcosts ActualCosts
References
Listreferencescitedorused.Forexample:
Child,L.E.andWade,P.M.(2000)TheJapanese
KnotweedManual.PackardPublishingLimited,Chichester.ISBN1853411272
EnvironmentAgencyandCornwallCountyCouncil
(1998)Japaneseknotweed.Howtocontrolitand
preventitsspread.EnvironmentAgency,Bodmin.
EnvironmentAgencyandCornwallCounty
Council(2001)Japaneseknotweed.Guidancefor
householdersandlandowners.CornwallCounty
Council.
WelshDevelopmentAgency(1998)Thecontrolof
Japaneseknotweedinconstructionandlandscape
contracts:Modelspecification.FormerWelsh
DevelopmentAgency,nowpartoftheWelshAssemblyGovernment.
WelshDevelopmentAgency(1998)Theeradication
ofJapaneseknotweed:Modeltenderdocument.
FormerWelshDevelopmentAgency,nowpartofthe
WelshAssemblyGovernment.
DRAFT TEMPLATE
DRAFT TEMPLATE
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Remarks:
Attachcopiesofthemap(s)ofthesite,andofmapsdepictingtheextentoftheJapaneseknotweedonthesite.
Appendix 1 - Distribution maps
Appendices
ExampleofJapaneseknotweedRecordingSheet(completeanewsheetforeachareaofJapaneseknotweed).
Appendix 2 - Japanese knotweed recording sheet
Averageheightofstems
Max.stemdiameterat
30cmaboveground
Vegetationcomposition
Proximitytowatercourses
Slope
>2.5m
>2.5cm
1-2.5m
1-2cm
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DRAFT TEMPLATE
Attachcopiesofdatacollectionsheets.
Appendix 3 - Forms used in collecting monitoring data
Attachdetailsofherbicidesused,doserateandapplicationratesanddatesapplied.
Appendix 4 - Herbicide records
AttachdetailsofwasterecordsforanymaterialcontainingJapaneseknotweedtakenoffsite.
Appendix 5 - Waste records
AttachdetailsofContractors,LocalAuthoritycontact,EnvironmentAgencycontact,adjacentlandownersetc.
Appendix 6 - Useful contacts
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ManagementplanforJapaneseknotweedat:
Periodcovered:
Prepairedby: Date:N.E. Body
2006-2010
April 2006
Environment AgencyManagingJapaneseknotweedondevelopmentsites57
Tableofcontents
1. INTRODUCTIONTOTHESITE 2
1.1 Descript ionofthesite
1.2 Sitemanagementobjectives
1.3 Limitationsandthreatstomanagementobjectives
1.4 Inventor yofthesite
2. OVERVIEWOFMANAGEMENTPLAN 3 2.1 Briefdescriptionofmanagementplan
2.2 Set tingpriorities
2.3 P reventingf urtherspread
3. SPECIFICCONTROLPLANSFORJAPANESEKNOTWEED 4 3.1 Managementobjectives
3.2 Managementoptions
3.3 Actionsplanned
3.4 Howactionswillbeevaluated
3.5 Resourceneeds
3.6 Resultsofevaluation
4. SUMMARYINFORMATION 5 Table1: Priorityareas
Table2: Controlmethods
Table3: Implement ationschedule
Table4: P rojectedresourcesandcos ts
5. REFERENCES 6
6. APPENDICES 7 Appendix1. SitemapsandJapaneseknotweeddistributionmaps
Appendix2. Japaneseknotweedrecordingsheet
Appendix3. Formsforcollectingmonitoringdata
Appendix4. Herbiciderecords
Appendix5. Wasterecords
Appendix6. Usefulcontacts
AppendixVI
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Briefdescriptionoftheexistingsite(priortoanydevelopment):Includepresenceofanynatureconservation
featurese.g.protectedspecies;vegetationtoberetained;watercourses(includeproximityofstreamsorriversifadjacenttothesite);buildingstoberetained;drainageonsite;otherrelevantfeatures.
Briefdescriptionoftheproposeddevelopment:Includeanyproposedimportorexportofsoils.
Briefdescriptionofthesitepost-development:Includeanypartsofthesitedesignatedforlandscaping,conservationareasetc.
1.1 Description of the Site
Introduction to the site DRAFT TEMPLATE
The site is a brown-field industrial site formerly a textiles factory which has beenvacant for 10 years. Buildings were demolished some 8 years ago. The site coversan area of approximately 6.5 ha. and is surrounded by mature hedgerows with somemature trees. A watercourse runs along the southern boundary of the site in anwesterly direction. Existing vegetation cover is rough ruderal vegetation with severalpatches of Japanese knotweed within the site and adjacent to the watercourse.
The development will require site levelling, construction of a service road,installation of drainage and services and the construction of a building. Somematerial will be exported and the remaining inert material will be used on-site inconstruction works. Import of top soils for landscaping around car parking andcommunal areas will be required.
The proposed development will incorporate 3 sports pitches and a car parking areawith a club house and facilities to the north eastern corner. A service road willprovide access onto the site. Hedgerows to be retained and landscaping to be carriedout in the vicinity of the clubhouse. A conservation area to the southern boundary isproposed alongside the watercourse.
Briefdescriptionofsitemanagementobjectives:Includeproposedtimescaleandplansforrestoration/re-planting.
1.2 Site Management Objectives
The site is expected to be operational 24 months after works commence.Landscape planting and restoration of the boundary hedgerows and riparianvegetation will be carried out during the construction period.
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Introduction to the site DRAFT TEMPLATE
DescriptionofhowthepresenceofJapaneseknotweedposesathreatto,orlimitsmanagement
objectives.Includeforexample: Increasingcostsofdevelopment
Delaysinschedulingofworks
Damageorpotentialdamagecausedbytheplant
PotentialforspreadofJapaneseknotweedfromwithinandoutsidethesiteboundary
(e.g.withinthesite,fromadjacentlandorviawatercourses)
PotentialforimportofJapaneseknotweedonmaterials
1.3 Limitations and Threats to Site Management Objectives
The presence of Japanese knotweed on site will increase the financial burden on thisproject both in terms of treatment costs and in delays in scheduling constructionworks. Any Japanese knotweed left untreated has the potential to damage hard
surfaces and sports pitches and to delay the landscaping. A large area of Japaneseknotweed exists outside the site to the eastern boundary and there is potentialfor further spread into the site along the watercourse. The development willnecessitate the export of some material and the import of top soils for landscapingand for sports pitches. Materials leaving or brought onto site should be checked toensure that Japanese knotweed does not leave or enter the site via this route.
Descriptionofthesiteboundaries,topography,access,specialfeatures:IncludemapsofsitepreandpostdevelopmentinAppendix1.
DescriptionoftheJapaneseknotweeddistributiononsiteandadjacenttothesite:IncludedetailedmapsshowinglocationofJapaneseknotweedandexactareacovered(allocateauniqueidentification
numbertoeachlocationofJapaneseknotweedonsitee.g.JK001,JK002etc).
Completearecordingsheetforeachlocation(seeAppendix2)IfJapaneseknotweedispresentonadjacentland,record
distributionanddetailsoflanduseandlandownership.
1.4 Inventory of the Site
The site is reasonably level with access from the B4452 on the western boundary.The site slopes down steeply towards the watercourse on the southern boundaryand there is potential in this area to accommodate a conservation area. Two matureWillow trees are located in the south western corner of the site.
Boundaries to the northern, western and eastern edges of the site are composedof mature hedgerow species including Hawthorn, Field maple, Blackthorn with some
mature Ash and Oak trees.
There are 6 distinct patches of well established Japanese knotweed on the sitein addition to 2 areas where a few stems have become established. These aredescribed in the accompanying maps and recording sheets. On adjacent land to
the east of the site, a large area of Japanese knotweed is present adjacent to thewatercourse. Total area of Japanese knotweed on site is estimated at 1,900m2.Total area of Japanese knotweed on adjacent land is estimated at 500 m2.
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Overview of weed management plan DRAFT TEMPLATE
AllocatepersonneltooverseeJapaneseknotweedmanagementandtoberesponsibleforsignoffatthe
endofthetreatmentperiod:
2.1 Brief Description of Management Plan
The Management of Japanese knotweed on site shall be overseen by the siteforeman and in his absence, his deputy. This Management Plan and appendices andrevisions of this plan shall be kept for future site owners. This Management Planshould be read in conjunction with the Environment Agency Code of Practice.
Examples: AreasofJapaneseknotweedonsitewhichrequirerapidtreatmentwillbeidentified.
Preventionoffurtherinfestationoftheplantonthesiteisapriority. Replacementvegetation/habitatwillbeconsideredratherthanjusteliminatingJapaneseknotweed.
Controlmethodswhichsuitthelocationandtimescalewillbeadopted.
Implementationwillbebasedontheaboveinformation.
Regularmonitoringwillbecarriedout.
Managementwillberevisedinresponsetofeedbackfromtheabove.
Assignprioritytoeachmanagementobjective:(e.g.High,MediumLow)-RecordprioritiesforeachlocationoftheplantinTable1.
2.2 Setting Priorities
High Priority
Areas of Japanese knotweed which require rapid treatment -JK002 on site access routeJK004 overlying site drainage routeJK005 and JK008 on land proposed for sports pitches.
Prevention of further spread. All Japanese knotweed areas to be isolated prior to any work being carriedout on site. This to include an area of at least 7 m laterally from above ground stems to ensure that anyunderground parts are also isolated.
All personnel on site to receive training on identification of Japanese knotweed both above and belowground parts.
Medium Priority
Control Methods for remaining areas of Japanese knotweed. A range of control methods will be adoptedto include excavation and stock piling for future treatment (bund method), in-situ herbicide treatment anda combination of digging and subsequent herbicide application (combination method). Herbicides will beselected which are suitable for site use e.g. restrictions on herbicides which can be used in or near water.
Monitoring -A scheme for monitoring will be agreed with the site foreman who will be ultimately responsible foroverseeing the control of Japanese knotweed on site.
Management -This management plan will be reviewed on a regular basis and in any case every 6 months from siteacquisition to site completion.
Low Priority
Replacement vegetation. JK003 adjacent to watercourse once eliminated should be replaced with grass
cover to prevent bankside erosion.
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Descriptionofmethodstobeemployedtopreventfurtherspread:
Includeforexample: IsolationofJapaneseknotweedonsitebyfencingtoavoiddisturbanceduringtreatment.
Assessmentofriskofre-invasionofJapaneseknotweedfromadjacentland.
LiaisonwithadjacentlandownerstotreatJapaneseknotweedwhichposesarisktothesite.
ProcedurestoensurethatimportedmaterialsarefreefromJapaneseknotweed.
Identificationofdesignatedhaulroutesthroughsitetoavoidcontamination.
Descriptionoftrainingtobegiventositeoperatorsandcontractorsduringdevelopment:Includeforexampleidentificationoftheplant(bothaboveandbelowgroundparts)andtrainingonsitepracticesto
preventfurtherspread.
2.3 Preventing Further Spread
Overview of weed management plan DRAFT TEMPLATE
All areas affected by Japanese knotweed to be fenced and isolated from activitieson site immediately to avoid potential for spread on-site. An area including aperimeter of at least 7m from the above ground stems should be isolated. See
Environment Agency Code of Practice 2.1, 2.2There is a high risk of invasion from neighbouring land. Contact the landowner andagree on a co-ordinated treatment programme.
No material to leave the site from the isolated Japanese knotweed areas.All topsoil and materials brought onto site to be checked prior to accepting. SeeEnvironment Agency Code of Practice 2.3No new materials to be stored adjacent to Japanese knotweed isolated areas.
No movement of Japanese knotweed contaminated material across site unless ondesignated haul routes, avoiding Japanese knotweed isolated areas.
All contractors and site operatives on site to receive training in Japaneseknotweed identification and site practices. Training to be given on day 1. Postershighlighting the key features of the plant to be displayed in all communal areas (see
Environment Agency Code of Practice Appendices I-IV).
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Sitename:
Responsiblemanager: Dateplanlastupdated:
Establishmeasurableobjectivesfortheplannedcontrolactivities.Include: theimpactondensity,cover,etc.thatyouwanttoachieve;
thesizeoftheareainwhichyouhopetoachievethis;
theperiodinwhichyouhopetoachieveit.
Examples: Objective1. EliminationofJapaneseknotweedonallpartsofthesitewithin5years.
Objective2. Reducepercentagecoverby50%on1haofthesitewithin2years.
Objective3. PreventionoffurtherspreadofJapaneseknotweedonsite. Objective4. Co-ordinationwithadjacentlandownerstocommenceactivetreatmentofJapaneseknotweedin
adjacentareaswithin1year.
3.1 Management objectives (measurable)
Specific control plans for Japanese knotweed DRAFT TEMPLATE
Dummy Site
Site Foreman May 2006
Objective 1
Immediately contain existing Japanese knotweed on site and preventfurther spread.
Objective 2
Reduce the percentage cover of Japanese knotweed on site by 50% within1 year.
Objective 3
Liaise with adjacent landowner to commence active treatment of Japaneseknotweed within 1 year.
Objective 4
Eliminate Japanese knotweed on site within 4 years.
Viablecontroloptionsare: Notreatment;
Treatmentalternative1
Treatmentalternative2etc.
Brieflydiscussthealternatives,indicatewhicharepreferredandtheconditions(sizeofareatreated,location,timing,
totalanticipatedcost,etc.)underwhichtheymaybeused.
Buildinrestrictedflexibilitytoallowconditionsonsitetobetakenintoconsideration.Statewhothesiteoperatives
shouldcontactwhennoneofthelistedalternativescanbecarriedout.
3.2 Management options - (continue on next page)
The various options for the control of Japanese knotweed include in situ herbicide
treatment, combined treatment of digging and herbicide, excavation and stock-pilingfor future treatment (the bund method), excavation and burial on site or excavationand removal off site. It is not an acceptable option to consider doing nothing.
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Summary information
3.2 Management options - (continued)
DRAFT TEMPLATE
Excavation and removal off site is a rapid method of removal but is costly, and in thelong term unsustainable. The particular site conditions do not allow for excavationand burial on site to the required depth of 5m (see Environment Agency Code ofPractice). As there is sufficient space on site, excavation and stock-piling on sitefor subsequent herbicide treatment (the bund method) is a viable option particularlyfor those areas of site which are required to have immediate availability (e.g. accessroad). The remaining areas of Japanese knotweed could be treated by a combineddigging and herbicide treatment or by in-situ herbicide treatment. The range ofherbicides available are limited in the case of the affected areas adjacent to the
watercourse, but other herbicides could be considered in more open areas away fromwater and mature trees. It may be necessary to vary the herbicide used or themode of application once treatment has commenced. This should be discussed andagreed with the approved contractor.
Brieflydescribethelocationstobetreated,materialsandmethodstobeused,andanapproximate
scheduleforcontrolandmonitoringactivities.RecorddetailsinTable2.
3.3 Actions planned (treatments and monitoring) - (continue on next page)
JK002, JK004, JK005, JK008Control Method:The Bund Method (See Environment Agency Code of Practice 5.4)
Treat affected area with an appropriate non-persistent herbicide and leave forat least 1 week.
Cut and remove canes and leave to dry on site for subsequent burning. Rake the surface of the affected area with tines to remove crowns and surface
material either leave to dry with canes for burning or spread on top of
completed bund. Excavate affected area until all rhizome material has been removed. Create bund on a layer of geotextile starting with least infected soil and build
up to 0.5 m to 1 m in height laying crown material and/or stems on top.
Treat regrowth with appropriate herbicide. Disturb bund after one or two treatments and treat regrowth with
appropriate herbicide.
Continue to treat and disturb until no further regrowth appears.
Soil from the bund may not be used off-site.
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Specific control plans for Japanese knotweed DRAFT TEMPLATE
Brieflydescribethelocationstobetreated,materialsandmethodstobeused,andanapproximate
scheduleforcontrolandmonitoringactivities.RecorddetailsinTable2.
3.3 Actions planned (treatments and monitoring) - (continued)
Estimatetheamountoftimeforstaff,materials,contractorsetc.andmoneythatwillberequiredtocarry
outtheplannedcontrol,monitoringandevaluation.RecordinTable4.
3.5 Resource needs
Thissectionistobefilledinlater,preferablywithin1year,whenmonitoringdatahasbeentakenand
evaluated.Theevaluationshouldbeusedtodeterminewhetheranyofthesections3.1-3.5aboveshouldbemodified.
3.6 Results of evaluation
JK001, JK006 - Control Method:Combined Treatment Method (See Environment Agency Code of Practice 3.4)
Cut and remove canes and leave to dry on site for subsequent burning. Rake the surface of the affected area with tines to remove crowns and surface material
and burn with canes.
Cultivate affected area to a depth of at least 50 cm depending on the depth to which thebulk of rhizome material exists.
Re-spread the excavated material over the cultivated area
Apply appropriate herbicide to regrowth. Check for new growth at 4 - 6 weeks intervals after treatment and re-treat accordingly. Repeat cultivation and herbicide application until no further regrowth appears.JK003, JK007 - Control Method:Application of herbicide to above ground stems in situ using a herbicide approved for use in ornear water e.g. glyphosate (See Environment Agency Code of Practice 3.2, 3.3)
Cut and remove dead canes during winter for subsequent burning.
Apply herbicide according to the manufacturers guidelines.
Check for new growth at 4 - 6 week intervals after treatment and re-treat accordingly.
Outlinethemethodsthatwillbeusedtomonitorcontrolactivitiesandthecriteriathatwillbeusedto
evaluatesuccessorfailureoftheprogram.Thecriteriaforsuccessshouldbebasedontheprogramsobjectivesandgoals.(DatasheetstobeusedwhencollectingmonitoringdatashouldbeincludedinAppendix3).
3.4 How actions will be evaluated (criteria for success)
Monitoring will be carried out by the contractor and the site foreman prior to anytreatment being carried out to act as a baseline for future monitoring and every 4 6weeks throughout the growth season. The contractor and site foreman will agree the level
of control achieved and the future treatment schedule. Recording sheets will be used todocument the percentage cover of Japanese knotweed at each affected area on site overat least 3 representative samples of 1 m2.
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Summary information
Table 1 - Priority areas
Area Descriptionandjustificationsofpriority Prioritylevel
DRAFT TEMPLATE
JK002, JK004,JK005, JK008
JK002 on proposed access road,JK004 overlying site drainage route.
JK005 and JK008 on land proposed forsports pitches. Rapid treatment required
High
JK001, JK003,JK006, JK007
Stands on or adjacent to site boundariescan be treated in-situ
Medium
Table 2 - Control Methods
Area ControlMethod Carriedoutby
JK003 ContractorHerbicide application
JK007 ContractorHerbicide application
JK008Site operativesand contractor
Bund method
JK006 Site operativesand contractor
Combination treatment
JK005Site operativesand contractor
Bund method
JK004Site operatives
and contractor
Bund method
JK002Site operativesand contractor
Bund method
JK001Site operativesand contractor
Combination treatment
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Summary information
References
Listreferencescitedorused.Forexample:
Child,L.E.andWade,P.M.(2000)TheJapaneseKnotweedManual.
PackardPublishingLimited,Chichester.ISBN1853411272
EnvironmentAgencyandCornwallCountyCouncil(1998)Japaneseknotweed.
Howtocontrolitandpreventitsspread.EnvironmentAgency,Bodmin.
EnvironmentAgencyandCornwallCountyCouncil(2001)Japaneseknotweed.
Guidanceforhouseholdersandlandowners.CornwallCountyCouncil.
WelshDevelopmentAgency(1998)ThecontrolofJapaneseknotweedinconstructionandlandscape
contracts:Modelspecification.
FormerWelshDevelopmentAgency,nowpartoftheWelshAssemblyGovernment.
WelshDevelopmentAgency(1998)TheeradicationofJapaneseknotweed:Modeltenderdocument.FormerWelshDevelopmentAgency,nowpartoftheWelshAssemblyGovernment.
DRAFT TEMPLATE
DRAFT TEMPLATE
Table 3 - Implementation ScheduleScheduletheplanning,surveying,andtreatmentforJapaneseknotweedforatleastthenextyear.
TreatmentSchedule-BundMethod Date
Table 4 - Projected resources and costsRevisethistableannuallyaftercomparingestimatedtoactualcosts.
Item Description Projectedresources Projectedcosts ActualCosts
Chemical treatment to be carried outprior to excavation if plants are in leaf.
day.month.year
Excavate Japanese knotweed and surrounding areauntil all traces of rhizome are removed.
Stockpile excavated material on protective membrane for treatment.day.month.year
Chemical treatment to be carried out during growing
season (March to September).
day.month.year
Apply disturbance to stockpile. day.month.year
Monitor for new growth. day.month.year
Chemical treatment to be carried out during growingseason (March to September).
day.month.year
Chemicaltreatment
Contractor toapply herbicide
Materials
Labour
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DRAFT TEMPLATE
Attachcopiesofthemap(s)ofthesite,andofmapsdepictingtheextentoftheJapaneseknotweedonthesite.
Appendix 1 - Distribution maps
Appendices
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Remarks:
ExampleofJapaneseknotweedRecordingSheet(completeanewsheetforeachareaofJapaneseknotweed).
Appendix 2 - Japanese knotweed recording sheet
Averageheightofstems
Max.stemdiameterat
30cmaboveground
Vegetationcomposition
Proximitytowatercourses
Slope
>2.5m
>2.5cm
1-2.5m
1-2cm
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onotremovesoilfromth
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ss
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Environment first: This publication is printed on paper made
from 100 per cent previously used waste. By-products from
making the pulp and paper are used for composting and fertiliser, for
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Then call us on
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