Ashland Lakefront Sediment Remediation What is a permanent engineered shoreline? A permanent engineered shoreline is a desirable cleanup option for the near shore sediments. The option could be designed as an extension of the Kreher Park to support the City of Ashland’s redevelopment plans by providing additional lakefront shoreline and community gathering spaces and safely contain dredged sediments preventing their re-entry into the waterway. This option could be enhanced by: • Using mass removal technologies • Treating or disposing contaminated sediments • Pumping and treating groundwater • Require monitoring to ensure that contaminants are contained A permanent engineered shoreline is an attractive option considering the unique conditions at the site, including the selected containment remedy for the on-land portion. Permanent engineered shorelines are: • Implementable and proven and have been successfully used at 40+ sites in the Great Lakes • Protective of the environment and can be completed faster and more cost-effectively than any dredging option, with less disrup- tion to the community and fewer risks to safety and human health • An extension of containment already in place at Kreher Park • The only option that would allow for planned extension of Kreher Park and which would complement the City of Ashland’s redevelopment plans PERMANENT ENGINEERED SHORELINE
Transcript
Ashland Lakefront Sediment Remediation
What is a permanent engineered shoreline?
A permanent engineered shoreline is a desirable cleanup option for the near shore sediments. The option could be designed as an extension of the Kreher Park to support the City of Ashland’s redevelopment plans by providing additional lakefront shoreline and community gathering spaces and safely contain dredged sediments preventing their re-entry into the waterway.
This option could be enhanced by:
• Usingmassremovaltechnologies
• Treatingordisposingcontaminatedsediments
• Pumpingandtreatinggroundwater
• Requiremonitoringtoensurethatcontaminants are contained
A permanent engineered shoreline is an attractive option consideringtheuniqueconditionsatthesite,includingtheselected containment remedy for the on-land portion.
Permanent engineered shorelines are:
• Implementableandprovenandhavebeensuccessfullyusedat40+ sites in the Great Lakes
• Protectiveoftheenvironmentandcanbecompletedfasterandmorecost-effectivelythananydredgingoption,withlessdisrup-tion to the community and fewer risks to safety and human health
PRIVILEGED AND CONFIDENTIAL-ATTORNEY-CLIENT WORK PRODUCTFigure 2
Lakefront Park Option B - No BreakwaterFormer Wastewater Treatment Plant, Ashland, WI
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PROPOSED BEACH
Ellis Ave. N
Hand
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Boat
Acc
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EXISTING MARINA FACILITY
Existi
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Mot
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d Bo
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Ram
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WaterQuality Pond
Shoreline Pathway
GATHERING SPACE(3.8 acres for Festivals, Community, Gathering, Informal Sports, Bocce,
Lawn Bowling)
Large Shelters
Water St.
Fishing Access Along Proposed Sheet Pile Wall
Existing Parking
Pathway/ Site Circulation
Vegetated Berms with Perennial and
Annual Gardens
B
Proposed Berm
C H E Q U A M A G O N B AY
Plaza (Potential
Stormwater Demonstration)
B’
A’A
On-Street ParkingParking Areas (Additional Parking Located to South)
Existi ng Shoreline Locati on
Potential Reuse of Existing Buildings for
Marine Support Facilities
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Refer to Design Precedence Photos (Figure 6)
Shoreline Beaches
Small Boat Access and Recreation
Urban Waterfronts - Gathering Spaces
Picnic Shelters
Picnicking Area
Existi ng Shoreline Locati on
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Scale in Feet
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PRIVILEGED AND CONFIDENTIAL-ATTORNEY-CLIENT WORK PRODUCTFigure 1
Lakefront Park Option A - Marina with BreakwaterFormer Wastewater Treatment Plant, Ashland, WI
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PROPOSED MARINA FACILITY
Fishing Pier / Breakwater
Shoreline Pathway PROPOSED BEACH
GATHERING SPACE(3.8 acres for Festivals, Community, Gathering, Informal Sports, Bocce,
Lawn Bowling)
Large Shelters
Water St.
Ellis Ave. N
Proposed Sheet Pile
Wall
Hand
-car
ried
Boat
Acc
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EXISTING MARINA FACILITY
Existing Parking
Pathway/ Site Circulation
Vegetated Berms with Perennial and
Annual Gardens
B
Proposed Berm
Existi
ng
Mot
orize
d Bo
at
Ram
p
C H E Q U A M A G O N B AY
WaterQuality Pond
Picnic Shelters
Picnicking AreaPotential Reuse of
Existing Buildings for Marine Support Facilities
Plaza (Potential
Stormwater Demonstration)
B’
A’A
On-Street ParkingParking Areas (Additional Parking Located to South)
Existi ng Shoreline Locati on 3
2
1
123
Refer to Design Precedence Photos (Figure 6)
Shoreline Beaches
Small Boat Access and Recreation
Urban Waterfronts - Gathering Spaces
Existi ng Shoreline Locati on
0
Scale in Feet
120
Aug
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201
2 10
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PRIVILEGED AND CONFIDENTIAL-ATTORNEY-CLIENT WORK PRODUCTFigure 3
Lakefront Park Option C - BeachFormer Wastewater Treatment Plant, Ashland, WI
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Exist ng Shoreline Locat on
Ellis Ave. N
Hand
-car
ried
Boat
Acc
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EXISTING MARINA FACILITY
WaterQuality Pond
Exist
ng
Mot
orize
d Bo
at
Ram
pPROPOSED BEACHShoreline Pathway
GATHERING SPACE(3.8 acres for Festvals, Community, Gathering, Informal Sports, Bocce,
Lawn Bowling)
Large Shelters
Water St.
Existng Parking
Pathway/ Site Circulaton
Vegetated Berms with Perennial and
Annual Gardens
B
Proposed Berm
C H E Q U A M A G O N B AY
Plaza (Potental
Stormwater Demonstraton)
B’
A’A
On-Street ParkingParking Areas (Additonal Parking Located to South)
Exist ng Shoreline Locat on
Potental Reuse of Existng Buildings for
Marine Support Facilites
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1
Picnic Shelters
Picnicking Area
123
Refer to Design Precedence Photos (Figure 6)
Shoreline Beaches
Small Boat Access and Recreaton
Urban Waterfronts - Gathering Spaces
By constructing all or part of the outer perimeter of the Permanent Engineered Shorelineasabulkheadwall,anewverticalshoreline would be established that could be designed to accommodate access and docking by vessels and public boats. Similarly,aboatrampcouldbeincorporatedto augment the Prentice Avenue boat ramp at a similarly accessible point.
The grounds of Kreher Park could be extended outward over the surface of the areaasenhancedpublicspace,withoptionstoincludewalkingpaths,nativeplantings,festivalgroundsandshorelinepromenade,thus improving public access to this portion oftheChequamegonBayshoreline.
Because the existing usable land area at KreherParkislimited,additionalland area gained through the construction could be used to site a community building,oraneducationalinstallation.
Some or part of the surface could be built to a lower range of elevations that allow foroccasionalorfrequentinundationbylake water and configured to provide near-shore habitat area and function.
The Permanent Engineered Shoreline could be fashioned to represent a public example of industrial cleanup and environmentally sensitive remedial planning,whichwoulddovetailwiththearea’s sustainability intiatives.
