Spring 2016
Massachusetts Department of Conservation and Recreation Division of Water Supply Protection Office of Watershed Management
Wachusett Reservoir
Aquatic Invasive Species Summary
Historical Update and Ongoing Actions
WachusettReservoirAquaticInvasiveSpeciesSummaryHistoricalUpdateandOngoingActions
Spring2016
TableofContentsIntroduction...............................................................................................................................................................................1
1. HistoryofAISinWachusettReservoir/Watershed.......................................................................................1
1.1 ReservoirNon‐NativeAquaticVegetation(through2015).............................................................2
1.2 ReservoirNon‐NativeAquaticFauna........................................................................................................5
2. NewIntroductionsandExpansionofNon‐nativeSpecies............................................................................6
3. AddressingAISintheFuture:Objectives,Strategies,Actions....................................................................7
3.1 PublicEducation/Outreach...........................................................................................................................7
3.2 ExclusionandDecontamination..................................................................................................................8
3.3 Detection/Monitoring......................................................................................................................................8
3.4 Response...............................................................................................................................................................9
4. Appendices.....................................................................................................................................................................11
AISWatchList...............................................................................................................................................................11
AquaticInvasiveSpeciesDecontaminationProtocolforMWRA/DCRReservoirs..........................12
5. WorksCited....................................................................................................................................................................14
AcknowledgementsThisreportwaspreparedbytheMADepartmentofConservationandRecreation,DivisionofWaterSupplyProtection,OfficeofWatershedManagement.TheprincipalauthorsareJoyTrahan‐LiptakandJamieCarr,AquaticBiologistsfortheWachusett/SudburyOperationalSection,underthesupervisionofJohnScannell,RegionalDirectorandPatAustin,P.E,SectionDirectorofEnvironmentalQuality.CoverphotobyJoyTrahan‐Liptak:EurasianMilfoil(Myriophyllumspicatum)inMuddyPond,Sterling.
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Introduction
An“AquaticInvasiveSpeciesAssessmentandManagementPlan”wasproducedbytheDivisionofWater Supply Protection (DWSP) in October 2010. This plan documented the presence of non‐native aquatic species in the reservoir system (including Sudbury Reservoir, a backup watersupply), provided ahistoryofmanagement for those species considered invasive, andpresentedthebasicstrategyforprotectingthereservoirsfromadditionalnon‐nativeaquaticspecies.Duetotheexpansionofthenon‐nativeaquaticspeciespopulationswithinandencroachingonWachusettReservoiranditswatershed,itwasdeterminedthatanupdateddocumentspecifictothisreservoirandsurroundingareashouldbedeveloped.
1. HistoryofAISinWachusettReservoir/Watershed
Non‐nativespecies(alsoreferredtoasaquaticinvasivespeciesorAIS)havelikelybeenpresentinoraroundWachusettReservoirformanydecades;however,inthepast25‐30years,awarenessandconcern regarding the effect of these species has increased as these and additional non‐nativespecies increase their distribution within and around the reservoir and watershed. Of primaryconcernformanagersoftheWachusettsystemarethosespecieswhichhavethepotentialtoimpactwaterquality. The following is a brief historyof non‐native species inWachusettReservoir andmonitoringeffortsthathavebeenconductedasaresultoftheriseofspecificnon‐nativespeciesintheregion. MoreextensivediscussionanddataregardingspecificmanagementactivitiesmaybefoundintheAnnualWaterQualityReports,ascitedbelow.
Figure1:MapofWachusettReservoirhighlightingAISmanagementareas.
QuinapoxetBasin
ThomasBasin
Oakdale Basin
Stillwater Basin
Hastings Cove
Gates Cove
Horseshoe Cove
Powerline Cove
West BoylstonBrook Cove
Malagasco Brook Cove
Wachusett ReservoirMain Basin
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1.1 ReservoirNon‐NativeAquaticVegetation(through2015)
Since themid to late 1990s, several non‐native species of aquatic vegetation have becomewellestablished in certain portions of the reservoir. Some, including Myriophyllum heterophyllum(variablemilfoil)havelikelybeenpresentsincethe1970sorbefore,sincetheyweredocumentedin nearby areas in the 1960s. Field notes for sampling conducted in Quinapoxet Basin in 1989reference“lotsofmilfoil”inthatarea.AnevaluationofreservoirvegetationconductedbyMADEPstaff in1996documentedM.heterophyllum as established in several basins and coves; however,Myriophyllumspicatum(Eurasianmilfoil),Cabombacaroliniana(fanwort),noranyotherAISwerenoted(McVoy&Brank,1996).
In 1999, MDC (Metropolitan District Commission, DCR’s predecessor agency) Aquatic BiologistDavidWorden initiatedanaquaticvegetationevaluationanddiscoveredbothM. spicatum andC.caroliniana in northern portions of Stillwater Basin. These populations were small andcharacterizedas“pioneers.”SurveysofwaterbodiesintheStillwaterBasinwatersheddocumentednoM.spicatumorC.caroliniana,leadingbiologiststoconcludethattheinfestationoriginatedfromdirectintroductionstotheStillwaterBasinortheriveritself.By2001,M.spicatumdistributionhadincreased and was beginning to colonize the northern portion of Oakdale Basin. At this point,managers from MDC and the Massachusetts Water Resource Authority (MWRA) decided thatmanagementofM.spicatumandC.carolinianashouldbeinitiatedinordertoprecludethesespeciesfromestablishinginthemainbasinofthereservoirwheretheirpresencecouldbedetrimentaltowater quality. Althoughothermanagementmethodswere evaluated, physical removal via diverhand‐pulling was selected as the primary strategy. Installation of benthic barriers and floatingfragment curtains supplemented the hand‐pulling operations. By the end of the first year ofmanagement,twoacresofbenthicbarrierhadbeeninstalledinOakdaleBasinandbetween78,000and97,900M.spicatumplantshadbeenremoved,primarilyfromOakdaleBasin,butasfarsouthasPowerlineCoveinthemainbasin.
These management efforts have been ongoing since their inception in 2002 and are currentlyenhancedbyMWRA’sdiverassistedsuctionharvesting(DASH)whichhasbeenusedtotargetlargedensepatchesoftargetvegetationsince2012. Moreextensivediscussionontheseannualeffortsmaybefoundinannualwaterqualityreports(http://www.mass.gov/eea/agencies/dcr/water‐res‐protection/water‐quality‐monitoring/water‐quality.html).
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Figure2:AISRemovalinThomas,Oakdale,andMainBasin2003–2015*includeshoursforDASH
Despite thesemeasures andanaverageeffortof235diver‐hoursperyear since2002, the targetplantscontinuedtoproliferateandextendtheirdistributioncloserandintothemainbasin.Intheearly stages of the project, management of the invasive species in Stillwater Basin was deemedunfeasibleduetothephysicalcharacteristicsof thisbasin, thearealextentof the infestation,andtheir distribution among dense beds of native plants. Regardless of isolation of this basin byfragmentbarriers(Figure3),fragmentscontinuedtomovedownstream,especiallyattimesofhighflow,and itwasdeterminedthatmanagement in thisareawouldberequiredtopreclude furtherinfestationdownstream.Therefore,anintensivevegetationremovalprogramwasimplementedin2013utilizingDiverAssistedSuctionHarvesting.Theprogramwascontinuedin2014and2015byMWRAandisanticipatedtobeongoing.RemovaleffortshaveresultedinasignificantdecreaseofAIS biomass and EQ biologists have observed reestablishment of native plant species as workcontinues.
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450
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5,000
10,000
15,000
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Number of Plants
Program Year
EWM FW Diver/Crew‐Hours
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Figure4:StillwaterDASHAISRemovalTotals
Aspartofroutineinvestigationsin2014,DCRaquaticbiologistsandMWRAcontractorsdiscoveredtwonewnon‐nativespeciesofaquaticvegetation;Glossostigmacleistanthum(mudmat)andElatineambigua (Asian waterwort) in the reservoir. At the time of discovery, these plants were wellestablished at various locations throughout the reservoir and had therefore likely been presentundetectedforsometimeduetotheirdiminutivestature.Asaresultofthischaracteristicandtheirhabit of low growth along the sediment, these species are unlikely to impact water quality.However, the discovery of these well‐established organisms highlights the vulnerability of thereservoirtointroductionsofnovelnon‐nativespeciesandthenecessityforcontinuedmonitoring.Asmonitoring continues, occasional isolated occurrences of invasive species are to be expected.FurtherdiscussionofnewAISoccurrencessuchasthisisprovidedinSection2.
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350,000
2013 2014 2015
Gallons of biomass removed
Project Year
Figure3:LocationsofFragmentBarriers
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1.2 ReservoirNon‐NativeAquaticFauna
Although several non‐native animals (i.e., Chinesemystery snail, virile crayfish, largemouthbass,etc.) have been present within Wachusett Reservoir for many years, these species have nothistoricallybeenconsideredathreattowaterquality.
Aswithmostwaterbodiesintheregion,thereareseveralspeciesofnon‐nativefishpresentwithinthe reservoir. Introductionsof fish toMassachusettsweremadeasearlyas themid‐1700s fromintentionaleffortstoimprovegamefisheriesorunintentionalreleasesviabaitbucketsoraquariumreleases. Although76waterbodies inMassachusettsweretreatedchemicallybetween1952and1968withtheintentofimprovingtroutfisheries,littleefforthasbeenmadetomanagenon‐nativepopulations,andmanyaresupportedviastockingactivities(e.g.,RainbowTrout). Asof2002,asmuch as 48% of the state’s primary fishery is composed of non‐native fish and 27 species areactively reproducing (Hartel, Halliwell, & Launer, 2002). The table below lists non‐native fishspeciesknowntoinhabitWachusettReservoirand/oritstributaries.
Comparing historical angler creel surveys for Wachusett Reservoir with recent angler creelsurveysconductedin2011and2012showsthatthefishspeciesmostfrequentlycaughtbyanglershavechangedoverthepast30years,andthatthislikelyreflectschangesinthefishcommunitycompositionoverthistimeperiod(Carr,2015). Asofthemostrecentsurveylake trout and smallmouth bass comprised nearly two‐thirds of total angler catch andgreaterthanhalfofthetotalharvestreported.
Table1:Non‐nativeAquaticFaunaofWachusettReservoir
Species Year Introduced to MA (from Hartel et. al.)
Wachusett Reservoir MA DFW Stocking Status
Management Action Taken
Fish
Yellow Bullhead (Ameiurus natalis) 1917 None
Rainbow Smelt (Osmerus mordax) 1700s Unknown, stocked in Quabbin
Reservoir None
Landlocked Salmon (Salmo salar) 1965 Currently stocked periodically None
Rainbow Trout (Oncorhynchus mykiss) 1883 Currently stocked annually None
Brown Trout (Salmo trutta) 1887 Previously stocked None
Lake Trout (Salvelinus namaycush) 1952 Unknown, stocked in Quabbin
Reservoir None
Rock Bass (Ambloplites rupestris) 1934 None
Bluegill (Lepomis macrochirus) 1917 None
Smallmouth Bass (Micropterus dolomieu)
1850 None
Largemouth Bass (Micropterus salmoides)
< 1862 None
Black Crappie (Pomoxis nigromaculatus)
1910 None
Invertebrates
Chinese mystery snail (Cipangopaludina chinensis)
ca. 1914 None
Virile crayfish (Orconectes virilis) < 1917 None
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2. NewIntroductionsandExpansionofNon‐nativeSpecies
Introductionsofnon‐nativespeciesareexpectedtobeanon‐goingissueonaglobal,national,andregional scale as anthropogenic activity continues to facilitate distribution and climate changealtershabitatsandgrowthpatterns.ThefollowingoutlinesseveralfactorsthatmustbeconsideredwhenaddressingAISinthereservoirandwatershed:
Recentdiscoveriesofwellestablishednon‐nativespecieswithin thereservoirhighlightthe continued vulnerability of the water supply to new introductions. As an easilypublicallyaccessiblewaterbodyincloseproximitytourbanareas,WachusettReservoirisundermanydirecthumanpressures.Theproximityofthereservoirtothemanyotherwaterbodies in the region that are infestedprovidesadded risk frombothhumanandnatural transport vectors such as transport on fishing gear, waterfowl movement,downstreamflow,andevenwindcurrents.Asdiscussedinthesectionsabove,theriskoffragmentsmovingintonewareasofthewaterbodyviawatercurrentshasalreadybeenobserved in the reservoir. In the case of bothGatesBrook Cove andMalagascoBrookCove,Eurasianmilfoilwasfoundbehindsedimentcurtainswhichshouldhaveprecludedinfestationviawaterflow.Itispossiblethatfragmentsweretransportedtotheseareasbybeavers,waterfowl,oranglers.
ItisimportanttoconsiderthattheincreaseinthenumberofAISnowreportedwithinthereservoirisnotduesolelytorecentintroductions. Atleastinpart,severaloftherecentspecies discoveries such as Glossostigma cleistanthum (mudmat) and Elatine ambigua(Asianwaterwort)werediscoveredduetotheamountofeffortexpendedtosurveythelittoralareasofthewaterbody,themorerecentconcentrationonidentifyingthesmallestaquatic plants species, and the still developing field of using DNA analysis to identifyaquaticplantstospecieslevel.Thesefactorswilllikelybeinplayinthefutureaswell.
Zooplanktonnetsamplesareperiodicallyscannedforknownzooplanktoninvaderssuchas spiny water flea (Bythotrephes longimanus), which would be easily recognizable ifcaptured.However,itispossiblethatsmallorganismssuchaszooplankton,sponges,andbryozoanspresentwithinthereservoirthathavelargelynotbeenkeyedoutmayincludenon‐nativespecies.Otherorganismsmayalsobepresent,butremainundetectedduetotheir life histories. An example of such a species is the non‐native freshwater jellyfishwhichwasdiscoveredbyDCRbiologistsduringitsmedusastageinasmallpondadjacenttothereservoirin2015.
Climate change is also likely to contribute to increases in non‐native species and theirviability in the reservoir, as outlined in the following excerpt from the AquaticMacrophyte Surveys ofMWRA/DCR Source and Emergency Reservoirs 2015 report byESS(ESSGroup,Inc.,2016).
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3. AddressingAISintheFuture:Objectives,Strategies,Actions
The overarching goals for aquatic invasive species management in Wachusett Reservoir are topreventnewintroductionsofnon‐nativespeciesandtolimitthespreadofintroductionsthathave alreadyoccurred. In general, the strategies to meet these goals fall under four generalcategories: public outreach and education, exclusion/decontamination, detection, and response.Theseeffortsaregenerallyoverseenbytheaquaticbiologists intheWachusettEQSectionwithalarge portion of public education/outreach and enforcement undertaken by the DCRWatershedRangers.Eachcategoryisdiscussedinthesectionsthatfollow.
3.1 PublicEducation/Outreach
While the Division has much control over potential introductions of non‐native species to thereservoir from equipment such as boats and trailers, there is a greater challenge in preventingintroductions from anglers fishing from shore, as well as introductions to water bodies in thewatersheds. The approach to providing public outreach on the threats from non‐native speciesmustbemultifacetedtoreachthegeneralpublicaswellasusergroups.
DCRWatershedRangersaretheprimarysourceofpublicinterfaceintheimmediatevicinityofthereservoir. They are regularly updated (annual training and as needed) on the latest non‐nativespeciesconcernsandthustheyarewellequippedtoeducatethereservoiruserstheyencounteraspartoftheirdailypatroldutiesandineducationalsettings.Alawagainsttransportationofaquaticnuisancespecies(M.G.L.c.21,§37B)waspassedin2013.Theimplementingregulations(302CMR18.00)giveDCRRangers(aswellasotherdesignatedlawenforcementofficials)authoritytoissuecitationsfor“Knowinglyorintentionallyplacing,orcausingtobeplaced,anANS[aquaticnuisancespecies]inoruponInlandWaters,”andotherrelatedviolationsofthelawonallpropertiesownedormanagedbyDCR.
Educational brochures and signage are a key element in any public outreach and DCR hasdevelopedbothtohighlightthreatsfromnon‐nativespeciesandthestepsneededtoprotectagainst
8
them. Entities targeted for distribution of brochures/signage include the following: bait shops,libraries,sportsmanclubs,boatramps,wateraccessareas,anglers,etc.
3.2 ExclusionandDecontamination
PublicboatingisnotallowedonWachusettReservoir.Certainsituationsrequirethatcontractors,law enforcement agencies, and staff from Division of Fisheries and Wildlife use their agency’svessels on the reservoir. These vessels and any equipment utilized on or in the reservoirmustcomplywiththe“Aquatic InvasiveSpeciesDecontaminationProtocol forMWRA/DCRReservoirs”includedintheAppendix.ThisrequirementwillbeincludedinallRFPsandagreementswithotheragencies. DCR Aquatic Biologists or MWRA personnel are present on site to perform a visualinspectionofeachvesselandassociatedequipmentbeforeitentersthereservoir.Inadditiontotheinspection,completeddecontaminationcertifications formsarecollectedandapproved/deniedatthattime.Recognizingthatproceduresfordecontaminationmaychangebasedontheintroductionofnewnon‐nativespecies,thisdocumentwillbeupdatedasneeded.
3.3 Detection/Monitoring
Monitoring of the aquatic communities within a water body is an essential component to anyprogram that strives to reduce the risk for establishment of non‐native species. Knowledge ofbaseline conditions facilitates early detection of new introductions and provides for futureassessmentsofhowtheseintroductionsaffectthenativecommunityovertime.Earlydetectionofintroductionsallowsforresponsemeasuresthatareoftensuccessfulineradicationorcontrolatalowercostandeffortduetothelimitedextentoftheinitialinfestation.
WachusettReservoir,includingallfivebasins,isthefirstpriorityformonitoring.Additionalwaterbodiesareaddedandprioritizedbasedonseveralcriteria,including:connectionandproximitytothereservoir,usebythepublic,andproximitytoknownpopulationsofnon‐nativespecies.Specificmonitoredparameters,timing,andprotocolswillvarydependingonthewaterbody.Thefollowinggraphicpresentstheexpectedtime‐framesformonitoringprograms.
9
Figure5:WachusettReservoirandWatershedExpectedAnnualMonitoringSchedule
Standardprotocols for thesemonitoring activitieswill bedeveloped asneeded and appended tothisdocument.Resultswillbecataloguedelectronicallyinastandardizedformatandbriefreportswillbedevelopedforeachwaterbody/areaasassessmentsarecompleted.
3.4 Response
Asdiscussedabove(seeSection2), thenumberofnon‐nativeaquaticspeciesand theviabilityofspeciescurrentlypresent in theregion isexpectedto increase. It isexpectedthat thenumberofnon‐native species present within the reservoir and its watershed could show a correspondingincrease. The detection of these species will most likely correspond with the level of effortallocatedtowardmonitoringactivities.
Duetothewide‐rangingnatureofinvasivespecies,thewaterqualityand/orecologicimpactsthesespeciesmayhaveonthereservoirwillbeevaluatedandrespondedtoonanindividualbasis.Somespecies, such asWater Chestnut (Trapanatans)may have clear negative impacts on bothwaterqualityandecologic functionaswellasastraightforwardandacceptedapproachtomanagement(physical removal). The impacts and management of others, such as the mudmat and Asianwaterwortdiscoveredinthereservoirin2014,maybelessclearandrequireadditionalmonitoringor research in order to determine if management is necessary upon discovery or becomesnecessaryinthefuture.
Thefollowinggraphicprovidesanexampleoftheprogressionofresponseactivities.
Reservoir Vegetation
Reservoir Zooplankton
Reservoir Invertebrates
Tributary Algae
Watershed Vegetation
January
February
March
April
May
June
July
August
September
October
November
Decem
ber
10
Figure6:AISResponseExample
Detection
•Initial detections will likely take place during routine monitoring activities or as a result of reports from other Division employees or the public.
Confirmation of ID
•If necessary, confirmation of the initial identification should be obtained by a second qualified individual either in person or via email, shipped sample, etc.
Notify DCR/MWRA
•Once a positive identification has been confirmed, the appropriate individuals at DCR and MWRA shall be notified.
Delineation
•DCR biologists will conduct surveys to quantify/define the infestation. Map(s) depicting density and distribution of the infestation will be produced for distribution to MWRA/DCR
etc. and used to assist with planning the management strategy. If necessary, plant fragments collected during the investigation will be removed from the water and
disposed of away from shore.
Evaluation
•Using the data gathered during the initial surveys and information compiled in this document, biologists will assess the available management tools and potential success
thereof to recommend the best management technique(s). This information will then be reviewed by managers who will make the final decision on how to proceed.
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4. Appendices
AISWatchList
Thislistwillbeupdatedasnecessary–lastupdated3/2016
Vegetation/Algae
Scientific Name Common Name(s) Type of Organism Closest known occurrence
Myriophyllum spicatum Eurasian milfoil Macrophyte Wachusett ReservoirCabomba caroliniana Fanwort Macrophyte Wachusett ReservoirMyriophyllum heterophyllum
Variable milfoil Macrophyte Wachusett Reservoir
Trapa natans Water chestnut Macrophyte Coe’s Pond (Worcester, MA)
Glossostigma cleistanthum Mudmat Macrophyte Wachusett ReservoirElatine ambigua Asian waterwort Macrophyte Wachusett Reservoir
Hydrillaverticillata Hydrilla Macrophyte South Meadow Ponds (Clinton, MA)
Egeria densa Brazilian waterweed Macrophyte Lake Cochituate (Natick, MA)
Najas minor Brittle / European naiad Macrophyte Lily Ponds (W. Boylston, MA)
Potamogeton crispus Curly‐leaf Pondweed Macrophyte South Meadow Ponds (Clinton, MA)
Didymosphenia geminata Didymo / “rock snot” Diatom Alga West Branch of the Westfield River (Chester, MA)
Emergent Vegetation
Phragmites australis Common Reed Wetland Plant Wachusett ReservoirLythrum salicaria Purple Loosestrife Wetland Plant Wachusett ReservoirNelumbo lutea American lotus Wetland Plant Charles River (Newton, MA)
Fauna
Corbicula fluminea Asian clam Bivalve Mollusk Fort Meadow Reservoir(Marlborough, MA)
Dreissena polymorpha Zebra mussel Bivalve Mollusk Laurel Lake and Housatonic River (Lee and Lenox, MA)
Bythotrephes longimanus Spiny water flea Micro‐crustacean [Feeder canal] Hudson River (Glens Falls, NY)
Cipangopaludina chinensis malleata
Chinese mystery snail Gastropod Wachusett Reservoir
Orconectes virilis Virile crayfish Crustacean Wachusett Reservoir
Channa argus Snakehead Fish Newton Pond (Boylston/Shrewsbury, MA)
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AquaticInvasiveSpeciesDecontaminationProtocolforMWRA/DCRReservoirs
Pleasecompleteandsubmitthischecklistbeforedeployingaboat/equipmenttoMWRA/DCRreservoirs(ForQuabbinReservoir,includingO’LoughlinPondandPottapaugPond,pleasecomplywiththeQuabbinBoatSealProgramrequirements):1.
CLEAN:Carefullyinspectboat,trailer,andequipmentforanypossiblecontamination(thisincludesallinteriorandexteriorboatsurfaces,engines,anchors,lines,downriggers,fishinggear,boots,clothing,wetsuits,divegear,nets,buckets,tools,andanyotheritemsexposedtowater).Removeallplantfragments(eventhosethatarenative),mud,anddebris.Disposeofthesematerialsinanuplandareawellawayfromopenwaterandcatchbasinsorwatercoursesthatmightdischargeintoawaterbody.Ifaboatormotorwereusedinawaterbodythatcontainszebramussels,feelthesurfaceforanyroughspots.Anyroughareasshouldbethoroughlycleaneduntilsmoothtothetouch(seebelow).
2.
DRAIN:Drainallwaterfromboat,bilge,engines,jetdrives,livewells,andotherequipment,andremovestandingwaterfromeverynookandcrannythatcannotbedrained.Watershouldbereleasedinanareathatis“highanddry”justaswithdisposalofremovedplantfragments,mud,anddebris.
3.
EACHpieceofequipmenttobeutilizedmustbesubjectedtooneofthefollowing,dependingontheequipmenttobeusedandtimeavailable.
DRY OR DECONTAMINATE
Iftimepermits,imposedowntimeforboat,trailer,andallequipmentsothattheyare
FULLYDRYforthetimeperiodslistedbelow:
TimeofYear DurationJulyandAugust 1weekJuneandSeptember 2weeksBeforeandafterthesedates 4weeks
WinterExposuretofreezingtemperaturesoverthewinterisconsideredtobesufficient
fordecontamination*
*preferredmethod
Ifdryingdowntimeisnotpracticableandavisittoanotherwaterbodyisplanned,useone,ora
combinationofthefollowingmethods:Disinfectant Concentration ContactTimeSteam/scaldinghotwater*
>140°F 10seconds
Chlorine/BleachSolution
1oz.pergallonwater
10minutes
Lysol 1%solution 10minutesVinegar Assold–100% 20minutesFreezing <32°F 24hours
4.
Pleasefilloutandsubmitfollowingchecklistforeachsetofequipmenttobeutilizedforthedurationoftheproject.
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DecontaminationCertification
Lastwaterbodyvisited:name,town,state
Thefollowingpiecesofequipmentthatwillbeutilizedin/onhavebeendecontaminatedasfollows: nameofMWRA/DCRreservoir
Pleasecheckeachdecontaminationmethodused.Note‘n/a’iflistedequipmentwillnotbeused.
Dry FrozenSteam/scaldingwater>140°F*
Chlorine/BleachSolution Lysol Vinegar___/___/___to
___/___/______/___/___to___/___/___
Boat
Hull/enginehousing
Deck
Bilgeandlivewell
Transomwell
Rope,anchors
Enginecoolingsystem
Plantcollectionequipment
Trailer Frame
Wheels
Bunks/rollers
Survey
Equipment Throwrakeincludingrope
Secchidiskincludingrope
Boots
Nets
Watersamplers
DiveGear
Wetsuit
Weights
BCD
Mask,fins,snorkel
Airhosesandtanks
Plantcollectionbags/tools
Other Pleaselist:
*preferredmethod
Iherebycertifythatthewatercraftandallotherequipmenttobeutilizedonthis
MWRA/DCRreservoirhavebeendecontaminatedaslistedabove.
Printname Company/Position Signature
5.
DCRPersonnel Project/Contract:
Inspection: Pass
Reason:
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5. WorksCited
Carr,J.(2015).WachusettReservoirCreelSurveyReport:SurveyYears2011and2012.MassachusettsDepartmentofConservationandRecreation,DivisionofWatershedManagement.
ESSGroup,Inc.(2016).AquaticMacrophyteSurveys,MWRA/DCRSourceandEmergencyReservoirs2015.Waltham,MA.
Hartel,K.E.,Halliwell,D.B.,&Launer,A.E.(2002).InlandFishesofMassachusetts.MassachusettsAudubonSociety.
McVoy,R.,&Brank,E.(1996).WachusettReservoirMacrophyteObservations.