Guillaume Carle, M.Eng. GoldSET Technical Manager Golder Associés

Transcription

1 An example of Best Management Practices in Contaminated Sites Management: The Sustainability Decision Support Tool as a part of the Federal Contaminated Sites Action Plan. Guillaume Carle, M.Eng. GoldSET Technical Manager Golder Associés 1

2 Objectives of this presentation Introducing the emergence of initiatives and tools to support the integration of sustainable development in the management of contaminated land Highlighting that these initiatives and tools promote the use of Best Management Practices (BMPs) once deployed within an organization Demonstrating how a tool like the Sustainability Decision Support Tool can support BMPs within the Federal Contaminated Sites Action Plan (FCSAP)

3 Sustainable Remediation In recent years, many initiatives/forums emerged throughout the world to promote the introduction of sustainable development objectives in the management of contaminated lands. Many methodologies, tools and evaluation frameworks have been elaborated. However, a centralized source of information or standard approaches for integrating sustainability principles and practices into remediation projects is awaited. Nevertheless, in an era where environmental issues are an increasing concern, we are learning that remediation actions may use unnecessary amounts of energy or contribute too much carbon dioxide and create risks to site workers that far exceed the risk posed by the contaminants being removed or destroyed. The need for action is here today and will only increase by tomorrow! (SURF s white paper on the integration of SD Principles, Practices and Metrics Into Remediation Projects)

4 Making Sustainable Remediation??! What is Sustainable Remediation? Sustainable remediation considers the environmental, social and economic impacts of a project to ensure an optimal outcome, while being protective of human and environmental health, both at a local level and for the larger community (SuRF Canada, 2012) Why Sustainable Remediation? For balancing economic viability, conservation of natural resources and biodiversity, and the enhancement of the quality of life in surrounding communities (SuRF, 2006). How to integrate Sustainable Remediation? through the application of tools or calculators that measure the sustainability of remediation technologies according to certain metrics (ITRC, 2011). June 24, 2013

5 ITRC - Evaluation Level LEVEL 3 BMPs + Adv. Evaluation LEVEL 2 BMPs + Simple Evaluation LEVEL 1 BMPs

6 Creating a SDAT as a part of the FCSAP Rationales: - Raise awareness of managers of contaminated sites - Promote a better understanding of SD issues related to decision-making - Facilitate communication with stakeholders - Define a structured and transparent framework in Contaminated Sites Management Development Guidelines Must integrate environmental, social and economic dimensions Must be based on a literature review Shall be simple and flexible in its use Should contain some quantitative indicators selected for the importance of environmental impacts that they must assess Should integrate simplified life cycle analysis (LCA) components

7 Available Tools In 2011, 38 tools designed for Site Remediation were inventoried Tools could be grouped into different types: Checklist, Semi-Quantitative, Quantitative and Hybrid. SDT supports contaminated site managers introducing SD principles into their activities by assessing the potential environmental, social and economic impacts of different approaches. SDT should promotes the deployment of BMPs during remediation projects and therefore improves the overall sustainability performance. Case studies have shown the benefits of integrating SD principles in remediation projects and the improvement of remediation alternatives. Tools Inventoried: ATHENA/Susop/BalancE3/BEES/BenReMod/BorealisIMS/Boustead/CBA/CleanMeGreen/ CleanupSust.Framework/DEQ/ EIO-LCA/EMFACT/GaBi/GCM/GoldSET/GoldSETCN/GRA/Greenscapes/GREET/GREM/GRS/Hybrid2 IWEM/NEBA/PaLATE/PTT/RETScreen/SAT/SDAT/SimaPro/SiteWise/SPSR/SRAT/SRT/Sust.AssessFramework/TRACI/WARM/

8 SDAT: Main Objectives Integrate the three dimensions of SD in the Remedial Technologies Evaluation Process; Allow the Evaluation Process using Readily Available Data (steps 1 to 6 of the FACS) Provide a better understanding of advantages and limitations of Remediation alternatives Allow managers to try mitigate impacts of alternatives using BMPs

9 SDAT: Derived from GoldSET Project Description Option Development Indicator Selection and Weighting Scoring of Indicators Interpretation & Decision Making 1.1 General Information 1.2 Site Description 1.3 Selection and Weighing 1.4 Selection 1.5 Evaluation 1.6 Results

10 SDAT: Part of FCSAP Step 7 of the Federal Approach to Contaminated Sites: Develop Remediation/Risk Management Strategy Steps 1 to 6 Available Data GOST SDAT Step 8

11 SDAT: Promoting BMPs The SDAT not only suggests the most sustainable remediation alternatives, indicators assess indirect impacts that may be mitigated using BMPs. BMPs examples as proposed by the ITRC Work safely Minimize vehicle miles Minimize waste sent to landfill Re-use excavated soils or secondary aggregates where fit-for-purpose Minimize consumptive use of water Avoid creating new pollution impacts Minimize noise, vibration, dust (etc.) and limit use of such equipment to normal office hours Inform neighbors about potentially noisy activity before it happens Incorporate natural attenuation into remedial strategy, as the main approach or in a treatment train SDAT

12 SDAT: Indicators Environment Social Economic Soil Quality Public and Worker's Safety Cost Soil Vapour Intrusion Project Duration Litigation Potential Groundwater Quality Quality of Life (During the Project) Nuisance to Normal Operations Free Product Public Benefits Property Reuse Surface Water Quality Cultural Heritage Environmental Reserve Impact on Drinking Water Supply Federal Government's Image Local Economic Benefits Off-site Migration Traffic Technical Reliability Quality of Physical Environment Impact on Landscape Logistics Impacts on Terrestrial Life Innovation Technological Uncertainty Impacts on Aquatic Life Greenhouse Gas Emissions Residual Waste Production Natural Resources Energy Consumption Water Consumption 12

13 SDAT: Indicator types Type Quantitative Evaluation Scheme Normalized Generic Description Number of Indicators When quantitative values are known, they are compared the other options in order to obtain a value between 0 and 100 (100 being the best option). 1 Generic indicators receive a score of 0, 33, 66, or 100, depending on the technology`s efficiency, but independently of site-specific characteristics. The scores of the generic indicators are found in the Reference (1) tab. 18 Qualitative Semi-Generic Custom Based on site-specific characteristics specified in the Site Description tab, semi-generic indicators receive a score of 0, 50, or 100, depending on the technology's efficiency. The scores of the semi-generic indicators are found in the Reference (2) tab. The custom scoring scheme is indicator-specific and is used to incorporate some indicators in the assessment. A good understanding of the technology, the project and its context is required to choose the appropriate score. 4 10

14 1 General Information 2 Site Description 3 Selection and Weighing 4 Selection 5 Evaluation 6 Results

15 1.1 1 General Information Site Description Selection and Weighing Selection Evaluation Results

16 1.1 1 General Information Site Description Selection and Weighing Selection Evaluation Results

17 1.1 1 General Information Site Description Selection and Weighing Selection Evaluation Results

18 1.1 1 General Information Site Description Selection and Weighing Selection Evaluation Results

19 1.1 1 General Information Site Description Selection and Weighing Selection Evaluation Results

20 Conclusions The SDAT: Adds structure and transparency to the decision process within FCSAP Improves the decision-making process involving complex issues Raises awareness on non-technical risks for federal managers Allows comparison with a set of key criteria and trade-offs Provides tangible benefits: Helps to identify improvements and to promote the use of BMPs to minimize remediation impacts Serves as a powerful communication tool for stakeholders through visual results Demonstrates the Government willingness to move forward with SD

21 Project Team Public Works and Government Services Canada Claudia Beauchemin Sébastien Yelle Valérie Morin Golder Associés Ltée Benoit Bourque Guillaume Carle Marianne Brien Robert Noël de Tilly Sylvain Hains Environment Canada Chantale Côté Jean-René Michaud Jeremy Anglesey Jody Klassen