conclusions future actions - IAN · Natural Resources Conservation J. Mosesso, Nat’l Information...

4
A Mid-Chesapeake Bay Marshland Restoration project is being developed by the Integration and Application Network, US Army  Corps of Engineers, Maryland Port Administration, US Fish & Wildlife Service, and Maryland Department of Natural Resources. An  International Tidal Wetlands Conference was held May 31–June 2, 2006 at Salisbury University, Maryland, to discuss ecological,  economic, and engineering issues associated with using dredged material to restore the eroding marshes of the mid-Chesapeake Bay. Based on the International Tidal Wetlands Conference Printed: February 2007 e Federal Dredged Material Management Plan discusses options for placement of dredged material. is dredged material comes from the Baltimore Harbor channels, channels in the Chesapeake Bay and C&D Canal, and channels in Virginia waters. ese locations were chosen because a large proportion of the sediment is recent and is suitable for purposes of habitat restoration including wetland, upland, and submerged aquatic habitat types. Dredged sediment is mostly fine-grained particles derived from the Susquehanna River Basin, with some additional inputs from eroding shorelines. Currently, the majority of material is dredged for channel maintenance reasons; however, it also includes some older deposits dredged for ‘new’ work such as channel straightening. ree to four million cubic yards of material are dredged annually in the region. Options for placement of this material include: Poplar Island, mid-Bay islands including James and Barren, and Dorchester County including the Fishing Bay Wildlife Management Area and Blackwater National Wildlife Refuge. ese options were discussed in detail at the conference, with particular attention to the ecological, engineering, and economic issues associated with this sort of project. Poplar Island. J. omas, UMCES Blackwater National Wildlife Refuge. H. Lane, UMCES Blackwater National Wildlife Refuge. J. omas, UMCES Barren Island. Google Earth Poplar Island. US Army Corps of Engineers James Island. Google Earth USFWS Dredged material can be used to restore  eroding marshes.

Transcript of conclusions future actions - IAN · Natural Resources Conservation J. Mosesso, Nat’l Information...

Page 1: conclusions future actions - IAN · Natural Resources Conservation J. Mosesso, Nat’l Information Infrastructure Little Choptank River Fishing Bay Main dishcharge pipe Alternative

primary objectives for ian• Fosterproblem-solvingusingintegrationofscientificdataandinformation• Supporttheapplicationofscientificunderstandingtoforecastconsequencesof

environmentalpolicyoptions• Providearichtraininggroundincomplexproblemsolvingandscience

application• Facilitateaproductiveinteractionbetweenscientistsandthebroader

community

 The Integration and Application Network (IAN) is a collection of scientists interested in solving, not just studying environmental problems. The intent of IAN is to inspire, manage, and produce timely syntheses and assessments on key environmental issues, with a special emphasis on Chesapeake Bay and its watershed. IAN is an initiative of the faculty of the University of Maryland Center for Environmental Science, but will link with other academic institutions, various resource management agencies, and non-governmental organizations.  

Printed on 100% recycled paper www.ian.umces.edu

A Mid-Chesapeake Bay Marshland Restoration project is being developed by the Integration and Application Network, US Army Corps of Engineers, Maryland Port Administration, US Fish & Wildlife Service, and Maryland Department of Natural Resources. An International Tidal Wetlands Conference was held May 31–June 2, 2006 at Salisbury University, Maryland, to discuss ecological, economic, and engineering issues associated with using dredged material to restore the eroding marshes of the mid-Chesapeake Bay.

BasedontheInternationalTidalWetlandsConference Printed:February2007

TheFederalDredgedMaterialManagementPlandiscussesoptionsforplacementofdredgedmaterial.ThisdredgedmaterialcomesfromtheBaltimoreHarborchannels,channelsintheChesapeakeBayandC&DCanal,andchannelsinVirginiawaters.Theselocationswerechosenbecausealargeproportionofthesedimentisrecentandissuitableforpurposesofhabitatrestorationincludingwetland,upland,andsubmergedaquatichabitattypes.Dredgedsedimentismostlyfine-grainedparticlesderivedfromtheSusquehannaRiverBasin,withsomeadditionalinputsfromerodingshorelines.Currently,themajorityofmaterialisdredgedforchannelmaintenancereasons;however,

italsoincludessomeolderdepositsdredgedfor‘new’worksuchaschannelstraightening.Threetofourmillioncubic

yardsofmaterialaredredgedannuallyintheregion.

Optionsforplacementofthismaterialinclude:PoplarIsland,mid-BayislandsincludingJamesandBarren,andDorchesterCountyincludingtheFishingBayWildlifeManagementAreaandBlackwaterNationalWildlifeRefuge.Theseoptionswerediscussedindetailattheconference,withparticularattentiontotheecological,engineering,andeconomicissuesassociatedwiththissortofproject.

conclusionsTheDorchesterCountyWetlandrestorationprojectshowsimpressivepotentialasabeneficialuseoption.TheMarylandPortAdministrationstates,“Evenwiththelimitedamountofdataavailable,DorchesterCountywetlandrestorationappearstohaveenormouspotentialforenvironmentalbenefitandecosystemrestoration,andshouldbestudiedasapotentialfuturebeneficialuseprojectoption”.

future actionsThepurposeofthiseffortistodevelopastudyplanthatwillevaluatethekeyecological,economic,andengineeringissuesassociatedwithalargescalemarshrestorationprojectinDorchesterCounty.

ThisstudyplanwillbeusedtodevelopadecisiondocumentforsubmittaltoCongress.Theplanwillalsoincludedetailedcosts,benefits,andanassessmentofenvironmentalimpacts.Thefinalresultsoftheconferencewillbewritteninasummaryreport.Inaddition,recommendationswillbeincorporatedintotheCorpsProjectManagementPlan.TheProjectManagementPlanincludesthescopeofwork,schedule,andestimatedbudget,andservestoguidetheCorpsstudyprocess.

participant listAKRF:ShawnShotzberger;Assateague Coastal Trust:JayCharland;BBL Sciences:TimothyIannuzzi,DavidLudwig,RamMohan,JosephShisler;Blasland, Bouck, and Lee, Inc.:WalterDinicola;Consorzio Venezia Nuova:GiovanniCecconi;Ducks Unlimited:JonasDavis,KurtDyroff;EA Engineering, Science, and Technology:JaneBoraczek,PeggyDerrick;EcoLogix:PaulMassicot;Environmental Concern Inc.:SuzanneP.Slear,GeneSlear;Gahagan & Bryant Associates:TimR.Donegan,WendellMears,SteveC.Shaw,RichardThomas,DanielWilson;Groningen University:WimWolff;Louisiana State University:IrvMendelssohn;Maryland Department of Natural Resources:DavidGoshorn,RolandLimpert,BruceMichael,KevenSmith;Maryland Environmental Service:TammyBanta,JenniferHarlan,JamesJett,AnnaKrainer,StephanieLindley,MeganSimon;Maryland Geological Survey:LamereHennessee,JamesHill,WilliamPanageotou;Maryland Port Administration:DavidBibo,NathanielBrown;FrancesFlanigan,MargieHamby,FrankHamons,BillLear,StephenStorms;National Aquarium in Baltimore:DavidNemerson,GlennPage;National Audubon Society:DavidCurson;NMFS:JohnNichols;NOAA:GalenScott;

NOAA/NOS/CO-OPS:StephenGill;Salisbury University:JudithStribling;The Washington Post:MichaelGrunwald;University of Maryland Center for Environmental Science:DonaldBoesch,JeffreyCornwell,BillDennison,KristineHopfensperger,DennisKing,HeatherLane,ElizabethPrice,LisaWainger;University of Maryland College Park:BrianNeedelman,SkyeWills;University of Maryland Eastern Shore:JosephLove;University of Maryland:AndrewBaldwin,MichaelKearney;University of New Orleans:DeniseReed;US Army Corps of Engineers:MaryAndrews,RobertBlama,ChristopherSpaur,BarryCortright,CharlesFrey,ScottJohnson,StevenKopecky,KarenNook,StevenPugh,ColleenTennity;US Environmental Protection Agency:DavidRider;US Fish and Wildlife Service:DixieBirch,GlennCarowan,WilliamGiese,JohnGill,LarryMcgowan,RebekahPackett;US Geological Survey:DonaldCahoon,WayneNewell,DanielSoeder,MattWright;US Geological Survey Patuxent Wildlife Research Center:RichardHammerschlag,PaulaHenry;Virginia Marine Resources Commission:TonyWatkinson;WH Nuckols Consulting/Coastal America:WilliamNuckols;Weston Solutions, Inc.:KurtFrederick,BobLindner,JackWord

Poplar Island.

J. Th

omas

, UM

CES

Blackwater National Wildlife Refuge.

H. L

ane, 

UM

CES

Blackwater National Wildlife Refuge.

J. Th

omas

, UM

CES

Barren Island.

Goo

gle 

Eart

h

Poplar Island.

US 

Arm

y Co

rps o

f Eng

inee

rs

James Island.

Goo

gle 

Eart

h

USF

WS

Dredged material can be used to restore eroding marshes.

ReferencesHamons,F.(2006,May10).UseofDredgedMaterialsforDevelopingMarshes.Available:http://ian.umces.edu/marshlands/Thomas,R.(2006,May10).EngineeringIssues.Available:http://ian.umces.edu/marshlands/

IAN:www.ian.umces.eduDrBillDennison:[email protected]

BasedonInternationalTidalWetlandsConferenceNewsletterpreparedbyEmilyBenson,HeatherLane,&JaneThomas

FURTHER INFORMATION

SCIENCE COMMUNICATION

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Page 2: conclusions future actions - IAN · Natural Resources Conservation J. Mosesso, Nat’l Information Infrastructure Little Choptank River Fishing Bay Main dishcharge pipe Alternative

BlackwaterNationalWildlifeRefugeispartoftheChesapeakeMarshlandsNationalWildlifeRefugeComplex.One-thirdofMaryland’stidalwetlandsarelocatedwithintheBlackwaterwatershed,makingitanecologicallyimportantareawithinthestate.BlackwaterNationalWildlifeRefugeisalsorecognizedasawetlandofinternationalimportance.Inaddition,therefugehasbeennamedaprioritywetlandintheNorthAmericanWaterfowlManagementPlan,andhasbeendesignatedanInternationallyImportantBirdArea.

ThemarshesinBlackwaterNationalWildlifeRefugearedisappearingatanalarmingrate,asisdepictedinthefollowingphotos.

The disappearing marsh

Blackwater marshes are ecologically significant

proposed placement options timeline

In1938,theLittleBlackwaterRiverflowingintothelargerBlackwaterRiverisplainlyvisible.By1989,itisdifficulttodiscernthelocationoftheLittleBlackwaterRiver.Sincethe1930s,8,000acresofmarshhavebeenlostatarateof150–400acresperyear.Causesofmarshlossincludesealevelrise,subsidence(gradualsinking),erosion,saltwaterintrusion,andinvasivespecies.TheBlackwaterNationalWildlifeRefugeComprehensiveConservationPlancallsforrestoringthemarshtothe1933conditions.Achievementofthisgoalwillrequireanaggressiveplanandconcertedeffortbyallinvolvedparties.

TherearethreeseparateoptionsdiscussedintheEnvironmentalImpactStatementassociatedwiththeDredgedMaterialManagementPlan.Thesethreeoptionsforplacementofdredgedmaterialare:

•expansionofPoplarIsland;

•largeislandrestorationinthemid-ChesapeakeBay;and

•wetlandrestoration—DorchesterCounty(Blackwater).

Ofthethreeoptionsunderconsideration,theDorchesterCounty(Blackwater)optionprovidesthelargestdegreeofenvironmentalandecologicalbenefit.

TheDorchesterCounty(Blackwater)restorationprovidesplacementopportunitiesfordredgedmaterialfor25–50years(andperhapslonger)andwouldrestorethewatershedoftheBlackwatermarshes.Potentialfuturebenefitsofthisoptionincludeecosystemandenvironmentalrestoration,placementofsubstantialamountsofdredgedmaterial,communityinvolvement,preventionofadditionalwetlandloss,andbenefitstofinfishandshellfishfisheries,wildlife,andoverallhealthoftheChesapeakeBayecosystem.

beneficial use option

TherearemanytechnicalandpracticalconcernsrelatedtotheDorchesterCounty(Blackwater)placementoption.Theseissues,includingdeliveryandplacementofdredgedmaterial,scheduleforimplementation,andeconomiccompetitiveness,mustallbetakenintoaccountbeforeadecisioncanbemadeontheefficacyofchoosingBlackwaterNationalWildlifeRefugeandFishingBayWildlifeManagementAreaasdredgedmaterialplacementsites.

Deliveryandplacementofdredgedmaterialencompassalargevarietyofissues,includingmanagementoftheproject,sizeofequipment,methodsforplacementofthematerial,amountofmaterialtoplaceeachyear,analysisofmaterials,fillrequirements,andmodeoftransportationforthematerialfromthedredgedsitetotheplacementsite.Theimplementationschedulemusttakeintoaccountdredgingschedulesofotherprojectsaswellaswaterfowlnestingseasonsand

theneedtomatchcapacityrequirementswithrestorationgoals.EconomiccompetitivenessisamajorissueinthisprojectastherearehighcostsassociatedwiththeDorchesterCountyplacementoption,andnotallofthebenefitsarequantifiableinthefederalanalysisofabenefit/costratio.

technical issues

Dredgingcancontinueatitscurrentpaceonlyifanewplacementoptionisfound.Atthecurrentrateofplacement,Hart–MillerIslandwillbeclosedtodredgedmaterialplacementbytheendof2009.PoolesIslandwillbeclosedasoftheendof2010.PoplarIslandwillhaveareducedcapacityby2012,butcouldcontinuetobeusedinanexpansionprojectthrough2019.Thisexpansionprojectwouldallowanadditional1.5millioncubicyardsperyear(mcy/yr)tobeplacedontheisland.JamesandBarrenIslandsareanticipatedtoprovideapproximately20yearsofplacementcapacity,startingaround2016(handling3.5–7.0mcy/yr).ThenewplacementoptionofDorchesterCounty(Blackwater)wouldnotbeneededuntilabout2036,andhasthepotentialtohandleuptoapproximately100mcy.

1974 19891938

US 

Fish

 and

 Wild

life 

Serv

ice

US 

Fish

 and

 Wild

life 

Serv

ice

US 

Fish

 and

 Wild

life 

Serv

ice

Phot

ostr

ip: U

S Fi

sh a

nd W

ildlif

e Se

rvic

e

In 2003, volunteers planted marsh grasses at three sites in Blackwater National Wildlife Refuge in an effort to contain sediment and prevent further marsh loss through erosion. As is apparent in this timeline of photographs, the marsh grass has grown and is thriving. 

May 2003 June 2003 August 2003 August 2004

2.0 mcy/yr (Reduced Capacity) 1.7 mcy/yr

3.2 mcy/yr (Reduced Capacity)

3.5–7.0 mcy/yr

Cap: 2.7 mcy/yr Closed

1.2 mcy/yr Closed

Ada

pted

 from

 F. H

amon

s

Hart–MillerIsland

PoolesIsland

PoplarIsland—Existing

PoplarIsland—Expanded

James&BarrenIslands

2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

This timeline displays the proposed options for the placement of dredged material. The projects shown in dark blue are still in the planning phases and are not definite. 

J. Mos

esso

, Nat

’l Bio

logi

cal I

nfor

mat

ion

Infra

stru

ctur

e

More than 350 bird species visit Blackwater National Wildlife Refuge annually, including the great blue heron (middle) and the bald eagle (right). 

T. M

cCab

e, U

SDA

 Nat

ural

 Res

ourc

es C

onse

rvat

ion 

Serv

ice

J. M

oses

so, N

at’l 

Biol

ogic

al In

form

atio

n In

frast

ruct

ure

LittleChoptankRiver

FishingBay

Maindishchargepipe

Alternativedishchargepipe

SecondAlternativedishchargepipe

Unloader

Preliminary concepts for long pipeline placement in Blackwater National Wildlife Refuge.

Ada

pted

 from

 R. Th

omas

0

0 5km

5mi

0

0 1km

1/4mi0

0 1km

1/4mi0

0 1km

1/4mi

Page 3: conclusions future actions - IAN · Natural Resources Conservation J. Mosesso, Nat’l Information Infrastructure Little Choptank River Fishing Bay Main dishcharge pipe Alternative

BlackwaterNationalWildlifeRefugeispartoftheChesapeakeMarshlandsNationalWildlifeRefugeComplex.One-thirdofMaryland’stidalwetlandsarelocatedwithintheBlackwaterwatershed,makingitanecologicallyimportantareawithinthestate.BlackwaterNationalWildlifeRefugeisalsorecognizedasawetlandofinternationalimportance.Inaddition,therefugehasbeennamedaprioritywetlandintheNorthAmericanWaterfowlManagementPlan,andhasbeendesignatedanInternationallyImportantBirdArea.

ThemarshesinBlackwaterNationalWildlifeRefugearedisappearingatanalarmingrate,asisdepictedinthefollowingphotos.

The disappearing marsh

Blackwater marshes are ecologically significant

proposed placement options timeline

In1938,theLittleBlackwaterRiverflowingintothelargerBlackwaterRiverisplainlyvisible.By1989,itisdifficulttodiscernthelocationoftheLittleBlackwaterRiver.Sincethe1930s,8,000acresofmarshhavebeenlostatarateof150–400acresperyear.Causesofmarshlossincludesealevelrise,subsidence(gradualsinking),erosion,saltwaterintrusion,andinvasivespecies.TheBlackwaterNationalWildlifeRefugeComprehensiveConservationPlancallsforrestoringthemarshtothe1933conditions.Achievementofthisgoalwillrequireanaggressiveplanandconcertedeffortbyallinvolvedparties.

TherearethreeseparateoptionsdiscussedintheEnvironmentalImpactStatementassociatedwiththeDredgedMaterialManagementPlan.Thesethreeoptionsforplacementofdredgedmaterialare:

•expansionofPoplarIsland;

•largeislandrestorationinthemid-ChesapeakeBay;and

•wetlandrestoration—DorchesterCounty(Blackwater).

Ofthethreeoptionsunderconsideration,theDorchesterCounty(Blackwater)optionprovidesthelargestdegreeofenvironmentalandecologicalbenefit.

TheDorchesterCounty(Blackwater)restorationprovidesplacementopportunitiesfordredgedmaterialfor25–50years(andperhapslonger)andwouldrestorethewatershedoftheBlackwatermarshes.Potentialfuturebenefitsofthisoptionincludeecosystemandenvironmentalrestoration,placementofsubstantialamountsofdredgedmaterial,communityinvolvement,preventionofadditionalwetlandloss,andbenefitstofinfishandshellfishfisheries,wildlife,andoverallhealthoftheChesapeakeBayecosystem.

beneficial use option

TherearemanytechnicalandpracticalconcernsrelatedtotheDorchesterCounty(Blackwater)placementoption.Theseissues,includingdeliveryandplacementofdredgedmaterial,scheduleforimplementation,andeconomiccompetitiveness,mustallbetakenintoaccountbeforeadecisioncanbemadeontheefficacyofchoosingBlackwaterNationalWildlifeRefugeandFishingBayWildlifeManagementAreaasdredgedmaterialplacementsites.

Deliveryandplacementofdredgedmaterialencompassalargevarietyofissues,includingmanagementoftheproject,sizeofequipment,methodsforplacementofthematerial,amountofmaterialtoplaceeachyear,analysisofmaterials,fillrequirements,andmodeoftransportationforthematerialfromthedredgedsitetotheplacementsite.Theimplementationschedulemusttakeintoaccountdredgingschedulesofotherprojectsaswellaswaterfowlnestingseasonsand

theneedtomatchcapacityrequirementswithrestorationgoals.EconomiccompetitivenessisamajorissueinthisprojectastherearehighcostsassociatedwiththeDorchesterCountyplacementoption,andnotallofthebenefitsarequantifiableinthefederalanalysisofabenefit/costratio.

technical issues

Dredgingcancontinueatitscurrentpaceonlyifanewplacementoptionisfound.Atthecurrentrateofplacement,Hart–MillerIslandwillbeclosedtodredgedmaterialplacementbytheendof2009.PoolesIslandwillbeclosedasoftheendof2010.PoplarIslandwillhaveareducedcapacityby2012,butcouldcontinuetobeusedinanexpansionprojectthrough2019.Thisexpansionprojectwouldallowanadditional1.5millioncubicyardsperyear(mcy/yr)tobeplacedontheisland.JamesandBarrenIslandsareanticipatedtoprovideapproximately20yearsofplacementcapacity,startingaround2016(handling3.5–7.0mcy/yr).ThenewplacementoptionofDorchesterCounty(Blackwater)wouldnotbeneededuntilabout2036,andhasthepotentialtohandleuptoapproximately100mcy.

1974 19891938

US 

Fish

 and

 Wild

life 

Serv

ice

US 

Fish

 and

 Wild

life 

Serv

ice

US 

Fish

 and

 Wild

life 

Serv

ice

Phot

ostr

ip: U

S Fi

sh a

nd W

ildlif

e Se

rvic

e

In 2003, volunteers planted marsh grasses at three sites in Blackwater National Wildlife Refuge in an effort to contain sediment and prevent further marsh loss through erosion. As is apparent in this timeline of photographs, the marsh grass has grown and is thriving. 

May 2003 June 2003 August 2003 August 2004

2.0 mcy/yr (Reduced Capacity) 1.7 mcy/yr

3.2 mcy/yr (Reduced Capacity)

3.5–7.0 mcy/yr

Cap: 2.7 mcy/yr Closed

1.2 mcy/yr Closed

Ada

pted

 from

 F. H

amon

s

Hart–MillerIsland

PoolesIsland

PoplarIsland—Existing

PoplarIsland—Expanded

James&BarrenIslands

2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

This timeline displays the proposed options for the placement of dredged material. The projects shown in dark blue are still in the planning phases and are not definite. 

J. Mos

esso

, Nat

’l Bio

logi

cal I

nfor

mat

ion

Infra

stru

ctur

e

More than 350 bird species visit Blackwater National Wildlife Refuge annually, including the great blue heron (middle) and the bald eagle (right). 

T. M

cCab

e, U

SDA

 Nat

ural

 Res

ourc

es C

onse

rvat

ion 

Serv

ice

J. M

oses

so, N

at’l 

Biol

ogic

al In

form

atio

n In

frast

ruct

ure

LittleChoptankRiver

FishingBay

Maindishchargepipe

Alternativedishchargepipe

SecondAlternativedishchargepipe

Unloader

Preliminary concepts for long pipeline placement in Blackwater National Wildlife Refuge.

Ada

pted

 from

 R. Th

omas

0

0 5km

5mi

0

0 1km

1/4mi0

0 1km

1/4mi0

0 1km

1/4mi

Page 4: conclusions future actions - IAN · Natural Resources Conservation J. Mosesso, Nat’l Information Infrastructure Little Choptank River Fishing Bay Main dishcharge pipe Alternative

primary objectives for ian• Fosterproblem-solvingusingintegrationofscientificdataandinformation• Supporttheapplicationofscientificunderstandingtoforecastconsequencesof

environmentalpolicyoptions• Providearichtraininggroundincomplexproblemsolvingandscience

application• Facilitateaproductiveinteractionbetweenscientistsandthebroader

community

 The Integration and Application Network (IAN) is a collection of scientists interested in solving, not just studying environmental problems. The intent of IAN is to inspire, manage, and produce timely syntheses and assessments on key environmental issues, with a special emphasis on Chesapeake Bay and its watershed. IAN is an initiative of the faculty of the University of Maryland Center for Environmental Science, but will link with other academic institutions, various resource management agencies, and non-governmental organizations.  

Printed on 100% recycled paper www.ian.umces.edu

A Mid-Chesapeake Bay Marshland Restoration project is being developed by the Integration and Application Network, US Army Corps of Engineers, Maryland Port Administration, US Fish & Wildlife Service, and Maryland Department of Natural Resources. An International Tidal Wetlands Conference was held May 31–June 2, 2006 at Salisbury University, Maryland, to discuss ecological, economic, and engineering issues associated with using dredged material to restore the eroding marshes of the mid-Chesapeake Bay.

BasedontheInternationalTidalWetlandsConference Printed:February2007

TheFederalDredgedMaterialManagementPlandiscussesoptionsforplacementofdredgedmaterial.ThisdredgedmaterialcomesfromtheBaltimoreHarborchannels,channelsintheChesapeakeBayandC&DCanal,andchannelsinVirginiawaters.Theselocationswerechosenbecausealargeproportionofthesedimentisrecentandissuitableforpurposesofhabitatrestorationincludingwetland,upland,andsubmergedaquatichabitattypes.Dredgedsedimentismostlyfine-grainedparticlesderivedfromtheSusquehannaRiverBasin,withsomeadditionalinputsfromerodingshorelines.Currently,themajorityofmaterialisdredgedforchannelmaintenancereasons;however,

italsoincludessomeolderdepositsdredgedfor‘new’worksuchaschannelstraightening.Threetofourmillioncubic

yardsofmaterialaredredgedannuallyintheregion.

Optionsforplacementofthismaterialinclude:PoplarIsland,mid-BayislandsincludingJamesandBarren,andDorchesterCountyincludingtheFishingBayWildlifeManagementAreaandBlackwaterNationalWildlifeRefuge.Theseoptionswerediscussedindetailattheconference,withparticularattentiontotheecological,engineering,andeconomicissuesassociatedwiththissortofproject.

conclusionsTheDorchesterCountyWetlandrestorationprojectshowsimpressivepotentialasabeneficialuseoption.TheMarylandPortAdministrationstates,“Evenwiththelimitedamountofdataavailable,DorchesterCountywetlandrestorationappearstohaveenormouspotentialforenvironmentalbenefitandecosystemrestoration,andshouldbestudiedasapotentialfuturebeneficialuseprojectoption”.

future actionsThepurposeofthiseffortistodevelopastudyplanthatwillevaluatethekeyecological,economic,andengineeringissuesassociatedwithalargescalemarshrestorationprojectinDorchesterCounty.

ThisstudyplanwillbeusedtodevelopadecisiondocumentforsubmittaltoCongress.Theplanwillalsoincludedetailedcosts,benefits,andanassessmentofenvironmentalimpacts.Thefinalresultsoftheconferencewillbewritteninasummaryreport.Inaddition,recommendationswillbeincorporatedintotheCorpsProjectManagementPlan.TheProjectManagementPlanincludesthescopeofwork,schedule,andestimatedbudget,andservestoguidetheCorpsstudyprocess.

participant listAKRF:ShawnShotzberger;Assateague Coastal Trust:JayCharland;BBL Sciences:TimothyIannuzzi,DavidLudwig,RamMohan,JosephShisler;Blasland, Bouck, and Lee, Inc.:WalterDinicola;Consorzio Venezia Nuova:GiovanniCecconi;Ducks Unlimited:JonasDavis,KurtDyroff;EA Engineering, Science, and Technology:JaneBoraczek,PeggyDerrick;EcoLogix:PaulMassicot;Environmental Concern Inc.:SuzanneP.Slear,GeneSlear;Gahagan & Bryant Associates:TimR.Donegan,WendellMears,SteveC.Shaw,RichardThomas,DanielWilson;Groningen University:WimWolff;Louisiana State University:IrvMendelssohn;Maryland Department of Natural Resources:DavidGoshorn,RolandLimpert,BruceMichael,KevenSmith;Maryland Environmental Service:TammyBanta,JenniferHarlan,JamesJett,AnnaKrainer,StephanieLindley,MeganSimon;Maryland Geological Survey:LamereHennessee,JamesHill,WilliamPanageotou;Maryland Port Administration:DavidBibo,NathanielBrown;FrancesFlanigan,MargieHamby,FrankHamons,BillLear,StephenStorms;National Aquarium in Baltimore:DavidNemerson,GlennPage;National Audubon Society:DavidCurson;NMFS:JohnNichols;NOAA:GalenScott;

NOAA/NOS/CO-OPS:StephenGill;Salisbury University:JudithStribling;The Washington Post:MichaelGrunwald;University of Maryland Center for Environmental Science:DonaldBoesch,JeffreyCornwell,BillDennison,KristineHopfensperger,DennisKing,HeatherLane,ElizabethPrice,LisaWainger;University of Maryland College Park:BrianNeedelman,SkyeWills;University of Maryland Eastern Shore:JosephLove;University of Maryland:AndrewBaldwin,MichaelKearney;University of New Orleans:DeniseReed;US Army Corps of Engineers:MaryAndrews,RobertBlama,ChristopherSpaur,BarryCortright,CharlesFrey,ScottJohnson,StevenKopecky,KarenNook,StevenPugh,ColleenTennity;US Environmental Protection Agency:DavidRider;US Fish and Wildlife Service:DixieBirch,GlennCarowan,WilliamGiese,JohnGill,LarryMcgowan,RebekahPackett;US Geological Survey:DonaldCahoon,WayneNewell,DanielSoeder,MattWright;US Geological Survey Patuxent Wildlife Research Center:RichardHammerschlag,PaulaHenry;Virginia Marine Resources Commission:TonyWatkinson;WH Nuckols Consulting/Coastal America:WilliamNuckols;Weston Solutions, Inc.:KurtFrederick,BobLindner,JackWord

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ReferencesHamons,F.(2006,May10).UseofDredgedMaterialsforDevelopingMarshes.Available:http://ian.umces.edu/marshlands/Thomas,R.(2006,May10).EngineeringIssues.Available:http://ian.umces.edu/marshlands/

IAN:www.ian.umces.eduDrBillDennison:[email protected]

BasedonInternationalTidalWetlandsConferenceNewsletterpreparedbyEmilyBenson,HeatherLane,&JaneThomas

FURTHER INFORMATION

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