Climate Change Impacts on Water and Wastewater Infrastructure at Moose Factory Final Report July 24, 2018 Project No. 163401448 Prepared by: Developed in partnership with: Sign-off Sheet This document entitled Climate Change Impacts on Water and Wastewater Infrastructure at Moose Factory was prepared by Stantec Consulting Ltd. (“Stantec”) for the account of Ontario First Nations Technical Services Corporation (OFNTSC) (the “Client”). Any reliance on this document by any third party is strictly prohibited. The material in it reflects Stantec’s professional judgment in light of the scope, schedule and other limitations stated in the document and in the contract between Stantec and the Client. The opinions in the document are based on conditions and information existing at the time the document was published and do not take into account any subsequent changes. In preparing the document, Stantec did not verify information supplied to it by others. Any use which a third party makes of this document is the responsibility of such third party. Such third party agrees that Stantec shall not be responsible for costs or damages of any kind, if any, suffered by it or any other third party as a result of decisions made or actions taken based on this document. Prepared by (signature) Guy Félio, Ph.D., P.Eng. Prepared by (signature) Wayne L.E. Penno, MBA, P.Eng. Reviewed by (signature) Jordan Stewart, P.Eng. Approved by (signature) Adrien Comeau, M.Eng, P.Eng CLIMATE CHANGE IMPACTS ON WATER AND WASTEWATER INFRASTRUCTURE AT MOOSE FACTORY Table of Contents EXECUTIVE SUMMARY ............................................................................................................ I ABBREVIATIONS ..................................................................................................................... III 1.0 INTRODUCTION ..........................................................................................................1.1 1.1 COMMUNITY DESCRIPTION ......................................................................................1.1 1.2 SCOPE OF THE STUDY ..............................................................................................1.3 1.3 PROJECT TIMELINE ...................................................................................................1.3 1.4 PROJECT TEAM ..........................................................................................................1.3 2.0 STEP 1: PROJECT DEFINITION .................................................................................2.1 2.1 CLIMATE RELATED CONCERNS ...............................................................................2.1 2.2 INFRASTRUCTURE TO BE CONSIDERED .................................................................2.3 2.3 TIME HORIZON FOR THE STUDY ..............................................................................2.4 3.0 STEP 2: DATA COLLECTION .................................................................................... 3.1 3.1 INVENTORY OF INFRASTRUCTURE COMPONENTS .............................................. 3.1 3.1.1 Potable Water System ................................................................................. 3.1 3.1.2 Wastewater System .................................................................................... 3.6 3.2 CONDITION OF INFRASTRUCTURE COMPONENTS ............................................... 3.8 3.3 CLIMATE CONSIDERATIONS ...................................................................................3.12 3.3.1 Climate Trends and Projections ................................................................. 3.13 3.3.2 Climate Elements Considered to Affect the Infrastructure .......................... 3.15 4.0 STEP 3: COMPLETE THE RISK ASSESSMENT ....................................................... 4.1 4.1 RISK THRESHOLDS ................................................................................................... 4.1 4.2 INFRASTRUCTURE RESPONSE ............................................................................... 4.2 4.3 CLIMATE PROBABILITY SCORING ........................................................................... 4.3 4.4 INFRASTRUCTURE SEVERITY SCORING ................................................................ 4.5 4.5 RISK ASSESSMENT ................................................................................................... 4.5 4.5.1 Infrastructure Components Evaluated ......................................................... 4.5 4.5.2 Risk Screening Process .............................................................................. 4.7 4.5.3 Summary of Risk Results ............................................................................ 4.7 4.5.4 Influence of the Infrastructure Condition ...................................................... 4.9 4.6 COMMUNITY IMPACTS FROM INFRASTRUCTURE RISKS ......................................4.9 5.0 CONCLUSIONS AND RECOMMENDATIONS .............................................................5.1 LIST OF TABLES Table 1: Timeline for the Project ...............................................................................................1.3 Table 2: Project Team ..............................................................................................................1.3 Table 3: INAC's ICMS, Canadian Infrastructure Report Card (CIRC) Condition Rating Scales and Description (from City of Edmonton) ........................................................3.9 Table 4: ICMS Data on Assets to be Considered in the Climate Risks Assessment ............... 3.10 i CLIMATE CHANGE IMPACTS ON WATER AND WASTEWATER INFRASTRUCTURE AT MOOSE FACTORY Table 5: Principal Climate Elements Selected by the Project Team for the Analysis ............... 3.15 Table 6: Risk Thresholds ..........................................................................................................4.2 Table 7: FN PIEVC Probability Scoring ....................................................................................4.3 Table 8: Probability Scores for Selected Climate Events ..........................................................4.4 Table 9: Infrastructure Severity Scoring Developed by the Project Team..................................4.5 Table 10: Infrastructure Assessed ............................................................................................4.6 Table 11: Summary of Moderate and High Risks......................................................................4.8 Table 12: Summary of Risks for Infrastructure Replaced at the End of its Design Life and is Well Maintained vs. Infrastructure that is Deteriorated ............................................4.9 LIST OF FIGURES Figure 1: Satellite view of Moose Factory and Surrounding Area (Source: Google Earth) .........1.2 Figure 2: Article from CBC News regarding the flooding of May 2013.......................................2.2 Figure 3: Photo of 1976 Flooding in Moose Factory provided by Project Team Member ...........2.2 Figure 4: Working List of Components of Water Treatment Plant Components Developed at Workshop 1 ..........................................................................................................2.3 Figure 5: Photo of Water Treatment Plant Building and Reservoir taken during the September 26, 2017 Site Visit as part of Workshop 1 ...............................................2.4 Figure 6: Moose Factory Water Treatment, Storage and Distribution Piping System (Source: Moose Factory Water Treatment Plant – Feasibility Study, OCWA 2015)........................................................................................................................3.2 Figure 7: Raw Water Intake and Low Lift Pump Building ..........................................................3.3 Figure 8: Raw Water Intake Structure – River Level Fluctuations .............................................3.4 Figure 9: Filter System Inside the WTP ....................................................................................3.5 Figure 10: SCADA Screen Showing the WTP Operations ........................................................3.6 Figure 11: Moose Factory – Sewer Main and Treatment Lagoons Layout (Source: ACRS Report by Saulteaux Consulting and Engineering. Inspected Summer 2016)........................................................................................................................3.7 Figure 12: Typical Lift Station, Lagoon Cell, Valve Chamber and Blower Building ....................3.8 Figure 13: Average Monthly Temperature and Precipitation from Moosonee UA Station ........3.12 Figure 14: Mean Daily Temperature for Summer - Historical Trend and Future Climate Projection (Moosonee Weather Station, RCP 8.5) ..................................................3.13 Figure 15: Mean Daily Temperature for Winter - Historical Trend and Future Climate Projection (Moosonee Weather Station, RCP 8.5) ..................................................3.14 Figure 16: Summer Precipitation - Historical Trend and Future Climate Projection (Moosonee Weather Station, RCP 8.5) ..................................................................3.14 Figure 17: Winter Precipitation - Historical Trend and Future Climate Projection (Moosonee Weather Station, RCP 8.5) ..................................................................3.15 Figure 18: FN PIEVC Protocol Risk Assessment Process Flowchart ........................................4.1 LIST OF APPENDICES APPENDIX A WORKSHOP PRESENTATIONS ..............................................................