Integration of Remediation, Restoration and Revitalization ......2019/01/15 · Integration of the...
1
Integration of Remediation, Restoration and Revitalization Objectives: A Case Study on the Mercury-Impacted South River, Virginia Cameron Dixon (AECOM, Boston, MA, USA) | Ryan Davis (Anchor QEA, Seattle, WA, USA) | Nancy Grosso and Mike Liberati (E.I. du Pont de Nemours and Company, Wilmington, DE, USA) | Dwayne Jones (City of Waynesboro, Waynesboro, VA, USA) Background Integration of Remediation, Restoration, and Revitalization Greenway As Soil Cap Conclusions www.aecom.com Historical mercury (Hg) releases from textile manufacturing facility on the South River, Virginia: Ø Increased Hg concentrations in biotic and abiotic media have not declined in 30 years. Ø Erosion of legacy Hg-impacted bank soils is highest loading source (see Figure 1). Ø City of Waynesboro has a city-wide greenway plan along the South River, parts of which are co-located with bank areas targeted for remediation. Figure 1. Conceptual Site Model for Hg loading to the South River The work described in this poster has been performed in conjunction with the South River Science Team (SRST), a multi-stakeholder group including representatives from local, state and federal governments, academia, environmental groups and DuPont. The SRST is a collaborative team created to provide input into the watershed-level, risk-based assessment framework to address mercury in the system. For more information visit the South River Science Team website! à • Allow Sufficient Time to: • Interface with Stakeholders • Complete Design Reviews • Obtain easement/permits • Identify project co-benefits early in remedial design process • Initial success builds confidence in future phases of work • Integrating remediation with local revitalization vision results in success. Figure 7. Six-months after completion at Constitution Park 1929-1950 Period of Mercury Use in Textile Fibers Production 1977-1980 Fish Consumption Ban-Advisory South River Science Team Founded 2001 City-Wide Greenway Plan Adopted 2001 2005-2013 Comprehensive Ecological Studies Phase 1 Greenway Constructed 2011 RCRA Permit Modification 2014 Constitution Park Remediation 2016 Phase 2A Greenway Constructed 2017 Figure 3. Phase 1- Interim Measures Locations Greenway Phase 1 / Constitution Park Remediation: Viewing Platform and River Access Greenway Phase 2B / Shiloh Baptist Church Remediation: Soil cap and construction access roads as Greenway Subgrade Greenway Phase 3 / Allied Ready Mix Remediation: Construction Access Road as Greenway Subgrade Figure 5. Allied Ready Mix (top), Shiloh Baptist Church (middle), Constitution Park (bottom) • Remedial designs incorporated urban revitalization vision at minimal additional cost • Inclusion of co-benefits increases community acceptance and shortens time for approvals • Access agreements for remediation facilitated through goodwill, collaboration and transparency City Shops Remediation 2017 Allied Ready Mix Remediation 2018 Shiloh Baptist Church Remediation 2019 Figure 2. Timeline Figure 4. Post-Remediation Constitution Park Recreational Use Figure 6. Integration of the South River Greenway Trail at Shiloh Baptist Church Bank Management Area (top), with before (left) and after renderings (right) Remediation Behind Historic Church • Phase 1 workplan called for excavation of bank behind church • Due to space limitations – Greenway plan used surface streets in-front of church rather than following riverbank • Risky excavation changed to capping, which includes constructing a mechanically stabilized earth embankment for the greenway • Capping as remedy had much lower risk and lower cost than excavation would • Greenway remains separated from street traffic minimizing disruption to Church North Park Remediation 2020 Greenway Phase 2B / North Park Remediation: Construction Access Road as Greenway Subgrade and Boat Launch
Transcript of Integration of Remediation, Restoration and Revitalization ......2019/01/15 · Integration of the...
Integration of Remediation, Restoration and Revitalization Objectives: A Case Study on the Mercury-Impacted South River, VirginiaCameron Dixon (AECOM, Boston, MA, USA) | Ryan Davis (Anchor QEA, Seattle, WA, USA) | Nancy Grosso and Mike Liberati (E.I. du Pont de Nemours and Company, Wilmington, DE, USA) | Dwayne Jones (City of Waynesboro, Waynesboro, VA, USA)
Background Integration of Remediation, Restoration, and Revitalization Greenway As Soil Cap
Conclusions
www.aecom.com
Historical mercury (Hg) releases from textilemanufacturing facility on the South River, Virginia:Ø Increased Hg concentrations in biotic and
abiotic media have not declined in 30 years.Ø Erosion of legacy Hg-impacted bank soils is
highest loading source (see Figure 1).Ø City of Waynesboro has a city-wide greenway
plan along the South River, parts of which areco-located with bank areas targeted forremediation.
Figure 1. Conceptual Site Model for Hg loadingto the South River
The work described in this poster has been performed in conjunction with the South River Science Team (SRST), a multi-stakeholder group including representativesfrom local, state and federal governments, academia, environmental groups and DuPont. The SRST is a collaborative team created to provide input into thewatershed-level, risk-based assessment framework to address mercury in the system. For more information visit the South River Science Team website! à
• Allow Sufficient Time to:• Interface with
Stakeholders• Complete Design
Reviews• Obtain
easement/permits• Identify project co-benefits early
in remedial design process• Initial success builds confidence
in future phases of work• Integrating remediation with local
revitalization vision results insuccess.
Figure 7. Six-months after completion at Constitution Park
1929-1950
Period ofMercury Use inTextile Fibers
Production
1977-1980
FishConsumptionBan-Advisory
South RiverScience Team
Founded2001
City-WideGreenway Plan
Adopted
2001
2005-2013
ComprehensiveEcological Studies
Phase 1Greenway
Constructed
2011
RCRA PermitModification
2014
ConstitutionPark
Remediation2016
Phase 2AGreenway
Constructed
2017
Figure 3. Phase 1- Interim MeasuresLocations
Greenway Phase 1/ Constitution
Park Remediation:Viewing Platformand River Access
Greenway Phase 2B /Shiloh Baptist Church
Remediation:Soil cap and
construction accessroads as Greenway
Subgrade
Greenway Phase 3 /Allied Ready Mix
Remediation:Construction AccessRoad as Greenway
Subgrade
Figure 5. Allied Ready Mix (top), ShilohBaptist Church (middle), Constitution Park(bottom)
• Remedial designs incorporatedurban revitalization vision atminimal additional cost
• Inclusion of co-benefitsincreases communityacceptance and shortens timefor approvals
• Access agreements forremediation facilitated throughgoodwill, collaboration andtransparency
City ShopsRemediation
2017
Allied Ready MixRemediation
2018
Shiloh BaptistChurch
Remediation2019
Figure 2. Timeline Figure 4. Post-Remediation Constitution Park Recreational Use
Figure 6. Integration of the South River Greenway Trail atShiloh Baptist Church Bank Management Area (top), withbefore (left) and after renderings (right)
Remediation Behind Historic Church• Phase 1 workplan called for
excavation of bank behind church• Due to space limitations – Greenway
plan used surface streets in-front ofchurch rather than following riverbank
• Risky excavation changed tocapping, which includes constructinga mechanically stabilized earthembankment for the greenway
• Capping as remedy had much lowerrisk and lower cost than excavationwould
• Greenway remains separated fromstreet traffic minimizing disruption toChurch
North ParkRemediation
2020
Greenway Phase 2B /North Park Remediation:Construction Access Road
as Greenway Subgradeand Boat Launch
![Gmail - Shiloh | we are AT Shiloh and IN Shiloh | gathering ......at Shiloh for 369 years[7] until the Ark of the Covenant was taken into the battle camp at Eben-Ezer (1 Samuel 4:3–5)](https://static.fdocuments.us/doc/165x107/612a00dd7ff4f92aba76d268/gmail-shiloh-we-are-at-shiloh-and-in-shiloh-gathering-at-shiloh-for.jpg)
