New Zealand Mud Snails in the Darlington Ditch, Cobblestone Fishing Access Site on the Madison River PDF
Preview New Zealand Mud Snails in the Darlington Ditch, Cobblestone Fishing Access Site on the Madison River
8 - OKCQiV© M0NTANAITi™iiiiuiHniiiiiiiiiii ^ <^r §&fms®ii:\ 308640015 6059 1 ^ STATEDOCUMENTSeOLLEeTIOMy ]9Ql jfS^t 2001 MONT•AjNNA(ST4ATS20U0S1RARY: I^tfMUadEqttfaeqaVWimsi<t,5 HELE1N5A1/5MEO.N6TtAhNAAVE5-9620; 1400So.19th Bozeman,MT5971 May4,2001 TO: Governor'sOffice,ToddO'Hair,Room204,StateCapitol,P.O.200801,Helena,MT59620-0801 EnvironmentalQualityCouncil,CapitolBuilding,Room106,P.OBox201704,Helena,MT59620 Dept.EnvironmentalQuality,MetcalfBuilding,P.O.Box200901,Helena,MT59620-0901 MontanaFish,Wildlife&Parks Director'sOffice FWPCommissioners WildlifeDivision DennisFlath LegalUnit FisheriesDivision MTHistoricalSociety,StateHistoricPreservationOffice,POB201202Helena,MT59620-1202 MTStateParksAssociation,P.O.Box699,Billings,MT59103 MTStateLibrary,1515E.SixthAve.,POB201800,Helena,MT59620 JJaanmeetsElJleinss,eMn,onMtoanntaanAaudEunbviornonCmouennctiall,IPnOfoBrm5a9t5i,onHeCleenntae,r,MPTOB591612844,Helena,MT59624 GeorgeOchenski,POB689,Helena,MT59624 GallatinCountyCommissioners,GallatinCountyCourthouse,311WestMain,Bozeman,MT59715 JerryDiMarco,P.O.Box1571,Bozeman,MT 59771 WWialydlniefeHuFresdte,raPt.iOo.n,BPo.xO.72B8o,xLi1b1b7y5,,MHeTlen5a9,92M3T59624 GlenHockett,745DoaneRoad,Bozeman,MT 59715 JackAtcheson,StateLandCoalition,3210OttawaSt.,Butte,MT59701 JBoohbnGBillobeormtq,uiMsotn,taMnoantWaonoalgSrtoowckerGsroAwsesrosc,AsPs.oO.c,B4o4xW1.6936,thHAevlee.naP,.OM.TBox591612845,Helena,MT 59624 TomSather,HeadwatersFish&GameAssoc,P.O.Box1941,Bozeman,MT 59771-1941 PerryBackus,65Redtail,Dillon,MT 59725 LadiesandGentlemen: EnclosedaretwoseparateEnvironmentalAssessments(EA's)addressingthepresenceofNewZealandMudSnailsin theDarlingtonDitch,atandadjacenttotheCobblestoneFishingAccessSiteontheMadisonRiver. Theyarethe DarlingtonDitchNewZealandMudSnailControlProjectEAandtheCobblestoneFishingAccessSiteFootbridge pErAo.poTshaelccoonmsmiestnetdpoefrpirooddfuocrtiBoonthanEdA'adsvweirltlisreumnefntroomfMthaisyE4A,.20P0u1bltihcrmoeuegthiJnugnsew4i,ll20b0e1h.ePludbilnicThirneveolFvoermkesntonfoMratyhis 22J.12,F0l2oE0wa0es1rtsLa.tat1mh4em00eThSarote.e7:1F09o0thr,pk.Bsmo.Mz,eetMmhaaonyd,i2sM4t,TC2h0u50r91c.7h18CA-on5mn4em9xe6,,nte1s-1m2asihCloe:udlapdrfblSeot.wseaertnst7@:tmo0o:0ntpMa.onmna.t.eaadnnudaaFtisthh,eWBiolzdleimfaen&PuPbalrikcs,LPiabrtarriyc,k Sincerely, °AQ-3£mu* k^&ti- IPatrickJ.Flowers RegionalSupervisor DRAFT MEPA/NEPA/HB495CHECKLIST PARTI. PROPOSEDACTIONDESCRIPTION 1. Type ofProposed State Action Construction offootbridge across the Darlinton Ditch at CobblestoneFishingAccessSite(FAS). 2. AgencyAuthorityfortheProposedAction 87-1-209 M.C.A. authorizes Montana Fish, Wildlife&Parkstoacquireanddeveloppropertiesforfishingaccessandoutdoorrecreation purposes. 3. NameofProject CobblestoneFASfootbridge. 4. Name,AddressandPhoneNumberofProjectSponsor(ifotherthantheagency) Agencysponsored. 5. IfApplicable: EstimatedConstruction/CommencementDate Summer,2001 EstimatedCompletionDate Summer,2001 CurrentStatusofProjectDesign(%complete) 90% 6. LocationAffectedbyProposedAction(county,rangeandtownship) CobblestoneFAS,alonglowerMadisonRiver,GallatinCounty,Township01North,Range02 East. 7. ProjectSize:Estimatethenumberofacresthatwouldbedirectlyaffectedthatarecurrently: (a) Developed: (d) Floodplain acres residential _acres industrial _acres (e) Productive: irrigatedcropland acres (b) OpenSpace/Woodlands/ drycropland acres Recreation _acres forestry acres rangeland acres (c) Wetlands/Riparian other acres Areas 1 acres 8. Map/siteplan:attachanoriginal81/2"x11"orlargersectionofthemostrecentUSGS7.5' seriestopographicmap showingthe location andboundariesoftheareathatwouldbe affectedbytheproposedaction.Adifferentmapscalemaybesubstitutedifmoreappropriate orifrequiredbyagencyrule.Ifavailable,asiteplanshouldalsobeattached. Seeattachedvicinitymap,FASsitemap,mastersiteplanandfootbridgeplansketch- Revised5/1/2001 9. NarrativeSummaryoftheProposedActionorProjectincludingtheBenefitsandPurposeof theProposedAction. Theproposedactionistoconstructafootbridge(seeattachedsketchdetailingfootbridgedesign) overtheDarlintonDitch(DD)nearthepublicparkingareawithinCobblestoneFAS. Withthe recent(June,2000)discoveryoftheNewZealandMudSnail(NZMS)withinthissectionofDD, Cobblestone FAS was closedtopublic entrywhileFWP conductedadditional research and evaluatedacourseofactiontodealwiththeintroducedmollusk. Whenthesitewasopentopublic useallrecreationistsareforcedtowadethroughDarlintonDitchtoaccesstheMadisonRiver withinCobblestoneFAS.FWPisproposingtoconstructafootbridgeoverDDasastop-gap measuretoreducethepossibilitythatrecreationistswadingDDwillspreadtheNZMSintothe adjacent-MadisonRiver. ThisproposedactioncouldpermitFWPtore-openthesiteforpublic recreationuseandaccesstotheMadisonRiver.Theproposalincludesutilizingfencingtochannel allriverboundfoottraffictothefootbridgetopreventpeoplefromwadinginDDinthevicinityof theparkinglot. FencingwouldrestrictaccesstoDDthroughouttheFASparkingarea,bothalong theeastsideoftheditchandtheMadisonRiverside(west)oftheditch. Approximately400yards of4-strandsmoothwirefencing,attachedtowoodfenceposts,wouldbeutilizedtofencethe shorelineofDD.Jack-legfencingwillbeutilizedacrossDDtorestrictwading(seeattachedmaster siteplan). Othertypesoffencingmaterialswereconsideredforthisprojectbutwererejected becauseofpotentialimpactstomammalsandbirds,usersafetyandbecause oftheaesthetic concerns.SigningwillbeusedtoinformsiteusersofthepresenceofNZMSandtoencouragethem totakeavarietyofprecautionstopreventspreadoftheNZMSintotheMadisonRiver InJune,2000NewZealandMudSnailswerediscoveredinanapproximately2000footsectionof theDarlintonDitchwithinCobblestoneFASandanadjacentdownstreamneighborsproperty. The NZMSisnativetoNewZealandastheirnameimplies. HowtheyarrivedinNorthAmericais undocumented,buttheevidencesuggeststheyarrivedinshipmentsoftroutortrouteggssentfrom NewZealandtoprivatecommercialaquaculturefacilitiesinIdaho.NZMSwerefirstdetectedin springsalongtheSnakeRivernearHagerman,Idaho. ThefirstdocumentationofNZMSin Montanawaterswasin1994,whentheywerefoundintheYellowstoneNationalParksectionof theMadisonRiveraboveHebgenReservoir. Sincethattimetheyhavespreaddownstreamasfaras QuakeLakeandarecontinuingtospreaddown-river. Wedonotknowhowthesnailsarrivedin DarlintonDitchattheCobblestoneFAS,butresearchersfeeltheyhavebeenthereforonlytwoor threeyears.WhiletheNZMShasbeenconfirmedinDarlintonDitchtheirdensitiesareasyet unknown. ImpactsofNZMSonfishpopulationsorevenindividualfishisyetunknown.TheNZMShasnot invadedanysectionofaMontanariverthathaslong-termfishpopulationdataavailable. Studiesin NewZealandsuggestthatbrowntrout(non-nativetoNewZealand)deriveaslittleas2%ofthe nutritivevalueavailablefromingestedNZMS.TheNZMSareverysmall,andhaveanoperclethat theycloseovertheshellorificetoprotectthemselves. HighpercentagesoftheNZMSpass unharmedthroughthedigestivesystemoffish.FWPisconcernedthatifNZMSattainhighenough densitiestodisplacealargeportionoftheexistingaquaticinvertebratefauna,andfishgetlittle nutritivevaluefromNZMS,thedietsoffishcouldbenegativelyimpacted. AnotherconcernwithNZMSisthattheyreproduceasexually-theyclonethemselves. Asmgle snailcanstartawholenewpopulation. GeneticanalysesofNZMSintheMadisonRiverreveals thattheyarealmostentirelyofasinglegeneticprofile,whichisthesameastheSnakeRiver NZMS. Theproposaltoconstructafootbridge-overDD,ifimplemented,wouldallowFWPtore-open Cobblestone FAS whichhasbeen closedtopublicuse sinceMay25, 2000. Theproposed footbridgewouldbeconstructedasatemporaryfacilitywhoselongevitywouldbedependenton effortstoeradicatetheNZMS.TotaleradicationoftheNZMSwouldlikelybenecessarytoremove thefootbridgeandreturntheFAStopostNZMSdiscoveiystatus. Itmustbenotedthattheproposedfootbridgewouldnotbeconstructedtofacilitateeasyaccessto theMadisonRiver. PastproposalstoprovideavehiclebridgeoverDarlintonDitchtofacilitate rivercraftlaunchinghasbeenmetwithwide-scalepubliccriticism. Thefootbridgeproposalwould consistofthreeapproximately30-footlonguntreatedpolestringersplacedonsimpletimberor concreteabutmentstospanthespringcreek/ditch.Thestringerswouldbedeckedwithplanks. The bridgewouldbeapproximately6inchestoonefootabovethehighwaterlevelofDarlintonDitch. Thewaterintheditch/springcreekisapproximatelyonefootdeepattheproposedfootbridge location. 10. ListingofanyotherLocal, StateorFederalagencythat has overlapping or additional jurisdiction. (a) Permits: AgencyName Permit DateFiled/# FWP MontanaStreamProtectionActPermit (b) Funding: AgencyName FundingAmount FWP $1,500 (c) OtherOverlappingorAdditionalJurisdictionalResponsibilities: AgencyName TypeofResponsibility StateHistoricPreservationOffice CulturalClearance 11. ListofAgenciesConsultedduringPreparationoftheEA: None PART ENVIRONMENTALREVIEW TT. PHYSICALENVIRONMENT 1.LANDRESOURCES IMPACTS Willtheproposedactionresultin: Potentially CanImpactBe Comment Unknown* None MinorO Significant Mitigated-* Index a.Soilinstabilityorchangesingeologic X substructure? b.Disruption,displacement,erosion,compaction, X moistureloss,orover-coveringofsoilwhich wouldreduceproductivityorfertility? c.Destruction,coveringormodificationofany X uniquegeologicorphysicalfeatures?: d.Changesinsiltation,depositionorerosion X Yes SeeId. patternsthatmaymodifythechannelofariveror below streamorthebedorshoreofalake? e.Exposureofpeopleorpropertytoearthquakes, X landslides,groundfailure,orothernaturalhazard? f.OtherN/A NarrativeDescriptionandEvaluationoftheCumulativeandSecondaryEffectsonLandResources(Attachadditionalpagesofnarrativeifneeded): Thebridgewillbedesignedtopassnormalhighflowsoftheditch/springcreek. Althoughfloodingisunlikelyinaregulatedspringcreek (DarlintonDitch),inalargefloodevent,thebridgemaybedisplacedandcausesomeerosionorchannelmodifcation. IncludeanarrativeexplanationunderPartIIIdescribingthescopeandlevelofimpact. Iftheimpactisunknown,explainwhytheunknownimpact hasnotorcannotbeevaluated. Includeanarrativedescriptionaddressingtheitemsidentifiedin12.S.604-1a(ARM) Determinewhetherthedescribedimpactmayresultandrespondonthechecklist. Describeanyminororpotentiallysignificantimpacts. IncludeadiscussionabouttheissueintheEAnarrativeandincludedocumentationifitwillbeuseful. PHYSICALENVIRONMENT IMPACT miltheproposedactionresultin: Potentially CanImpactBe Comment Unknown** None Minor* Significant Mitigated Index »a.Emissionofairpollutantsordeteriorationof X ambientairquality?(alsosee13(c)) b.Creationofobjectionableodors? X c.Alterationofairmovement,moisture,or X temperaturepatternsoranychangeinclimate,either locallyorregionally? d.Adverseeffectsonvegetation,includingcrops,due X toincreasedemissionsofpollutants? e.ForP-R/D-.Inroiects.willtheprojectresultinanv discharge,whichwiilconflictwithfederalorstateair qualityregs?(Alsosee2a) f.OtherN?A NarrativeDescriptionandEvaluationoftheCumulativeandSecondaryEffectsonAirResources(Attachadditionalpagesofnarrativeifneeded): IncludeanarrativeexplanationunderPartIIIdescribingthescopeandlevelofimpact. Iftheimpactisunknown,explainwhytheunknownimpact hasnotorcannotbeevaluated. Includeanarrativedescriptionaddressingtheitemsidentifiedin12.8.604-1a(ARM) Determinewhetherthedescribedimpactmayresultandrespondonthechecklist. Describeanyminororpotentiallysignificantimpacts. IncludeadiscussionabouttheissueintheEAnarrativeandincludedocumentationifitwillbeuseful. PHYSICALENVIRONMENT 3.WATER IMPACTS • | Willtheproposedactionresultin: Unknown*} None MinorO SPiogtneinftiiaclalnyt CaMnitIimgaptaecdtBe CoImnmdeexnt »a.Dischargeintosurfacewateroranyalterationof X surfacewaterqualityincludingbutnotlimitedto temperature,dissolvedoxygenorturbidity? b.Changesindrainagepatternsortherateandamountof X surfacerunoff? c.Alterationofthecourseormagnitudeoffloodwateror X otherflows? d.Changesintheamountofsurfacewaterinanywater X bodyorcreationofanewwaterbody? e.Exposureofpeopleorpropertytowaterrelatedhazards X suchasflooding? f.Changesinthequalityofgroundwater? X g.Changesinthequantityofgroundwater? X h.Increaseinriskofcontaminationofsurfaceor X groundwater? i.Effectsonanyexistingwaterrightorreservation? X j.Effectsonotherwaterusersasaresultofanyalteration X insurfaceorgroundwaterquality? k.Effectsonotherusersasaresultofanyalterationin X 1 surfaceorgroundwaterquantity? l.ForP-R/D-J.willtheprojectaffectadesignated floodplain?(Alsosee3c) m.ForP-R/D-.I.willtheproiectresultinanvdischarge thatwillaffectfederalorstatewaterqualityregulations? (Alsosee3a) n.Other: N/A NarrativeDescriptionandEvaluationoftheCumulativeandSecondaryEffectsonWaterResources(Attachadditionalpagesofnarrativeifneeded): IncludeanarrativeexplanationunderPartIIIdescribing-thescopeandlevalofimpact. Iftheimpactisunknown,explainwhytheunknownimpact hasnotorcannotbeevaluated. Includeanarrativedescriptionaddressingtheitemsidentifiedin12.8.604-1a(ARM) v Determinewhetherthedescribedimpactmayresultandrespondonthechecklist. Describeanyminororpotentiallysignificantimpacts. 00 IncludeadiscussionabouttheissueintheEAnarrativeandincludedocumentationifitwillbeuseful. 6 PHYSICALENVIRONMENT 4.VEGETATION IMPACT Willtheproposedactionresultin: Unknown None Minor0- PSoitgennitfiiaclalnyt CaMnitIimgpataecdtftBe CoImnmdeexnt a.Changesinthediversity,productivityorabundanceofplant X species(includingtrees,shrubs,grass,crops,andaquaticplants)? b.Alterationofaplantcommunity? X c.Adverseeffectsonanyunique,rare,threatened,orendangered X species? d.Reductioninacreageorproductivityofanyagriculturalland? X e.Establishmentorspreadofnoxiousweeds? X f.ForP-R/D-.l.willtheprojectaffectwetlands,orprimeand uniquefarmland? 2.Other:N/A NarrativeDescriptionandEvaluationoftheCumulativeandSecondaryEffectsonLandResources(Attachadditionalpagesofnarrativeifneeded): IncludeanarrativeexplanationunderPart111describingthescopeandlevelofimpact. Iftheimpactisunknown,explainwhytheunknownimpact hasnotorcannotbeevaluated. Includeanarrativedescriptionaddressingtheitemsidentifiedin12.8.604-1a(ARM) Determinewhetherthedescribedimpactmayresultandrespondonthechecklist.Describeanyminororpotentiallysignificantimpacts. 00 IncludeadiscussionabouttheissueintheEAnarrativeandincludedocumentationifitwillbeuseful. 7 PHYSICALENVIRONMENT y5.FISH/WILDLIFE IMPACT J Willtheproposedactionresultin: Unknown None Minor SPiogtneinftiicalalnyt CaMnitIimgpaatecdtBe CoImnmdeexnt a.Deteriorationofcriticalfishorwildlifehabitat? X b.Changesinthediversityorabundanceofgameanimalsorbird X species? c.Changesinthediversityorabundanceofnongamespecies? X d.Introductionofnewspeciesintoanarea? X e.Creationofabarriertothemigrationormovementofanimals? X f.Adverseeffectsonanyunique,rare,-threatened,orendangered X species? g.Increaseinconditionsthatstresswildlifepopulationsorlimit X abundance(includingharassment,legalorillegalharvestorother humanactivity)? h.ForP-R/D-.I.willtheprojectbeperformedinanvareainwhich T&Especiesarepresent,andwilltheprojectaffectanyT&Especiesor theirhabitat?(Alsosee5f) i.ForP-R/D-J.willtheproiectintroduceorexportanvspeciesnot presentlyorhistoricallyoccurringinthereceivinglocation?(Alsosee 5d) i.Other: N/A NarrativeDescriptionandEvaluationoftheCumulativeandSecondaryEffectsonLandResources(Attachadditionalpagesofnarrativeifneeded): v IncludeanarrativeexplanationunderPartIIIdescribingthescopeandlevelofimpact. Iftheimpactisunknown,explainwhytheunknownimpact hasnotorcannotbeevaluated. • Includeanarrativedescriptionaddressingtheitemsidentifiedin12.8.604-1a(ARM) Determinewhetherthedescribedimpactmayresultandrespondonthechecklist. Describeanyminororpotentiallysignificantimpacts. IncludeadiscussionabouttheissueintheEAnarrativeandincludedocumentationifitwillbeuseful. 8
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