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8/9/2019 Environental Restoration at the Grand Calumet East Branch
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Welcome
Environmental
Restoration
at
the
Grand Calumet
River’s
East
Branch
Eric
J
Hritsuk,
PENatural Resource Technology, Inc.
Clean Rivers, Clean Lake Conference
Milwaukee, Wisconsin
April
30,
2015
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Great
Lakes
Legacy
Act
(GLLA)
of
2002
• Accelerate the pace of sediment remediation
at Areas
of
Concern
(AOCs)
• 2008 Reauthorization includes habitat restoration
• Use partnerships as an innovative approach
to conducting
sediment
remediation
• Delist AOCs by removing beneficial use impairment (BUI)
•
At
least
35%
of
project
costs
from
non‐
federal sponsor
• USEPA provides up to 65%
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Approaches for Generating Non‐
Federal Cost
Share
• Linking waterfront land revitalization and
sediment
cleanup
efforts• Combining brownfield revitalization and
contaminated sediment remediation
• Establishing public‐private partnerships
• Establishing a non
‐federal
coalition
• State bond programs
• In‐kind services
• Settlement agreements
• Clean Water state revolving funds
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GLLA
Goals
Remediation Restoration Revitalization
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Environmental Benefits
of GLLA
•
Higher
quality
habitat
for
fish
and
wildlife
• Better water quality
• Improved fishery
• Improved benthic habitat
• Reduce contaminant levels to biota
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Economic Benefits
of
GLLA
• Cleaner and deeper urban waterway
•
Restoration and
remediation
• Increases property values
• Increases recreation
•
Increases tourism
• Increases fishing
• Increases shipping
• Projected
$50
billion
in
restored
benefits
to
the Great Lakes region (Brookings Institute, 2007)
6
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Completed or ongoing
projects
Great Lakes Legacy Act Projects
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GLLA To
Date
• 21 Clean‐Ups Complete or Agreements Signed
• ~3,000,000 cubic
yards
(CY)
• Total cost: $565 Million
• Leveraged $227
Million
non
‐federal match
• 10 years of successful implementation under GLLA
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Project Background
• 90% of flow originates as municipal and industrial effluent, cooling and process water, and storm water
overflows
• Legacy pollutants in sediments and surface water
• All 14 BUIs included in 1991 remedial action plan
• $2.1 million settlement with Hammond Sanitary
District in
1999
• $56 million settlement with 9 responsible parties in 2001
• US Steel completed dredging of 800,000 cy in upper 5‐mile
portion
of
East
Branch
in
2007
and
performed
additional in‐stream restoration in 2010
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Project Map
– Reaches
4A/4B
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Partners and
Stakeholders
• USEPA Great Lakes National Project Office
• Indiana Department of Environmental Management
• Indiana Department of Natural Resources
• U.S. Army Corps of Engineers
• U.S. Fish and Wildlife Service
• Shirley Heinze Land Trust
•
The Nature
Conservancy
• Save the Dunes Conservation Fund
• E.I. du Pont de Nemours and Company
• Resco Products Company
• SulTRAC (Engineer
of
Record)
• Great Lakes Sediment Remediation• JFBrennan, Environmental Restoration, NRT
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Project Goals
and
Objectives
• Remove contaminant mass in sediment
•
Reduce
risks
to
aquatic
life
and
human
health
• Reduce contaminant transport to Indiana Harbor and Lake Michigan
• Improve water quality in East Branch Grand Calumet River and Grand Calumet River AOC
• Advance the AOC toward delisting thru removal
of
beneficial
use
impairments
• Improve biota, fish, and wildlife habitat
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Major Project
Components
1. Remove abandoned railroad bridge
2. Construct temporary upland support areas
3. Excavate sedimentation basin to protect remedy from upstream contaminants
4. Partially dredge contaminated river sediments
5. Excavate adjacent wetlands to remove phragmites and place
sand
backfill
with
ponds
6. Dewater sediments and treat water
7. Offsite transportation and disposal of dredged materials
8. Place
amended
cap
over
remaining
sediments9. Restoration including planting native species
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Railroad Bridge
Removal
• Testing and removal of abandoned gas pipeline
• Removal
of
ties
and
walkways
• Tested for lead based paints
• Disassembly of girder sections
• Removal of timber piling
• Debris removal
and
load
out
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Upland Support
Area
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Installation of
Sediment
Basin
Created to provide sediment trap for upstream contaminated sediments
• Dredged 28,000 cy
4,400 ft2 sheet pile wall driven across downstream end
• Raises water elevation 1 foot above normal
• Functions as
a weir,
trapping
sediment
behind
it
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Hydraulic Dredging
• 40,000 CY river; 82,000 CY
wetland
• Two 8” dredges with pipeline
and booster pumps
• Cutter shears for phragmites
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Hydraulic Dredging(continued)
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Water Quality Monitoring During
Dredging• Real time turbidity monitoring
• Measure and control downstream transport of contaminated
sediment
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Geotextile Tubes
and
Water
Treatment
• 60 tubes stacked in
three layers
• Sized to treat up to 5
million gallons per day
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Load Out
Operations
• Dredged sediment and used geotextile tubes
•
Approximately 127,000
tons
• Each truck bed was lined
• Truck scale and tire wash
•
All
sediment
was
trucked
to
the
Newton County Landfill, Indiana
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Marsh Excavation
• 203,000 CY of material excavated
mechanically• Amphibious equipment
• Split into east and west marsh
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Marsh Excavation
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Sand Backfill
• Broadcast Capping System
(BCS)™
• Evenly and gently
distributes sand while
minimizing intermixing
with underlying
sediments
• Wetlands A – F, sediment
basin
• 100,000 ton
• Seidner Marsh
• 199,000 tons
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Reactive Cap Design
AquaGate™ (adsorptive)Treatment
Layer
Water Column
Residual Contamination
Armoring Layer
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Sediment Capping• River segments
• 16,000 cy of absorptive cap
• 40,000 ton
of
armored
cap
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Ecological Significance
• Numerous environmental
stakeholders
• Globally rare dune and swale
complex
• Rare Species
• Wild Lupine
• Harebell
• Fringed Gentian
• White Indigo
• Blazing Star
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Invasive Species
Control
• Eradication of invasive vegetation
(phragmites, cattails)
• Herbicide application
• Prescribed burning (planned)
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Revegetation• Genotype Restrictions (Northwest Morianal
Division of Indiana)
• Native Seed: 73.90 acres (1,200 lbs.)
• Native Plugs: 121,245
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Maintenance and
Monitoring
• Performance Standards• Coverage (Native and Invasive)
• Representation
• Survival
•
12 months
from
EPA
preliminary acceptance (2016)
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Metrics• Project length: 1.8 miles
• River depth• Pre‐dredge ~0‐10’
• Post‐dredge > 6’
• River sediment and wetland dredging volume: ~140,000 cy
• Marsh excavation volume: ~203,000 cy
• Sediment cap profile: 9” armor over 6” isolation with AquaGate+ORGANOCLAY™
• Water treatment:
3,500
GPM
during
hydraulic
dredging
• Dewatering: ~60 geotextiles tubes stacked 3‐high
• Wetlands and marsh invasive species control (47 acres) and restoration (74 acres)
•
Project
duration:
~3
years
plus
12
months
revegetation
maintenance
• Project budget: ~$80 million
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