Iona Island Wastewater Treatment Plant Stakeholder meeting (Birds & l agoons) Thursday, April 4, 2019 Metro Vancouver 4730 Kingsway, Burnaby BC
Iona Island Wastewater Treatment Plant PROJECT DEFINITION PHASE Martin Clarke PROJECT MANAGER, POLICY, PLANNING & ANALYSIS April 4, 2019 1
Iona Island Secondary WWTP Regulatory Drivers • Metro Vancouver’s Integrated Liquid Waste and Resource Management Plan • Government of Canada’s Wastewater Systems Effluent Regulations
Metro Vancouver Wastewater Treatment Plants 3
Vancouver Sewerage Area Vancouver, Burnaby, Richmond, UBC, UEL, Squamish Nation & Musqueam Indian Band 4
N Iona Island WWTP
Iona Island WWTP Project Phases & Timeline 2020
Iona Island Secondary WWTP Project Goals Secondary Wastewater Treatment Resource Recovery Community and Park Integration
The Project Definition Phase Deliverable A report that will: • Provide a conceptual design • Provide a project schedule for detailed design and construction • Provide a detailed design and construction cost- estimate • Recommend procurement method(s)
Integrative Design Process 9
Integrative Design Process (IDP) 10
Iona Lagoon Decommissioning Dave Keeney Houston Marsh PROJECT ENGINEER RESIDUALS MANAGEMENT OPERATIONS Iona Lagoon Stakeholder Meeting April 4, 2019
Lagoons Drying Beds Lagoon Cleaning 2
Excavate biosolids from lagoon 3
Lagoons Drying Beds Transport biosolids from lagoon to drying beds 4
2019 to 2021 Until 2023 2022 to 2023 Offsite Timeline - Lagoon cleaning 5
Lagoons Centrifuges Offsite Lagoon Dredging/Dewatering 6
Lagoon Dredging 7
2021 to 2022 2019 to 2020 Offsite Timeline - Lagoon dewatering 8
Period Activity Access Restrictions Lagoon Status Full Empty Summer 2019 SW Lagoon Cleaning Intermittent closure of NE, NW, SW lagoon area SE Winter 2019-2020 NE Lagoon Dredging None NE, NW, SW SE Summer 2020 SW Lagoon Cleaning Intermittent closure of NE, NW, SW NE Lagoon Dredging lagoon area SE Summer 2021 SW Lagoon Cleaning Intermittent closure of NW, SE SW, NE NW Lagoon Dredging lagoon area Summer 2022 SE Lagoon Cleaning Partial closure of lagoon NW SW, SE, NW Lagoon Dredging area NE Summer 2023 SE Lagoon Cleaning Partial closure of lagoon None SW, SE, NW Lagoon Dredging area NE, NW Overall Timeline 9
Questions? 10
Land dry the biosolids 11
Land dry the biosolids 12
Land dry the biosolids 13
Remove dried biosolids 15
Iona Island WWTP Ecological Systems and Opportunities Nick Page | Raincoast Applied Ecology April 2019
Projec ect p plan anning: how do we incorporate ecological values and issues? 1. Identifying regulatory issues: Fisheries Act, Species at Risk Act, Wildlife Act, Migratory Bird Convention Act, Water Sustainability Act. 2. Identifying important habitats or values that may not be specifically addressed by regulation: rare ecological communities, freshwater wetlands, etc. 3. Identifying opportunities for creating or enhancing ecological values: from restoring ecological processes/systems to small- scale habitat improvements. 4. Identifying information gaps: Western painted turtle? High water line? Barn swallows nesting? 5. Listening to the community: sources of information, concerns, ideas.
Iona I a Islan and: summary of ecological values 1. Iona Island is at the intersection of freshwater, marine, and terrestrial ecosystems: intertidal marshes, mudflats, freshwater ponds, and coastal sand ecosystems. 2. River management and industrial use has disrupted ecological processes but also created unique / novel ecosystems. 3. Iona Island provides important habitat for migratory birds (freshwater & marine wetlands, shrub thickets, grasslands, forest). 4. Iona Island provides unique opportunities for to restore habitat connectivity and ecological processes in the Fraser Estuary. 5. Access to nature (birding) and recreation are also important cultural values at Iona Island.
Historical vegetation (1860s) of the Iona Island area (from North et al., 1977). The light green colour (“g”) was indicated in the legend as ‘prairie: grasses’.
1952 Image WWTP Iona Island is a novel and highly modified landscape created by river dredging and industrial activities
Metro Vancouver’s Sensitive Ecosystem Inventory (SEI)
Interpreted ecological value (relative) of the Sensitive Ecosystems in Iona Beach Regional Park. All coloured areas are Sensitive Ecosystems; darker colours represent ecosystems of higher ecological value or sensitivity (map provided by Metro Vancouver Parks).
Iona Island is surrounded by critical intertidal habitats: marshes, mudflats, and tidal channels Musqueam Marsh North Arm Jetty WWTP McDonald Slough (interpreted)
LiDAR-based topographic mapping (0.5 m contours)
Mapping high water line and fish habitat along the north edge of McDonald Slough
Coastal sand ecosystems are provincially rare and support species and ecological communities at risk Coastal sand ecosystems are provincially rare and support species and ecological communities at risk
Habitat restoration by Metro Vancouver Parks has substantially increased sparsely-vegetated coastal sand ecosystem habitats
Freshwater wetlands and sludge lagoons are important habitat for waterfowl, shorebirds, and other birds in the Fraser estuary Sludge Lagoons
Sludge lagoons provide valuable habitat for waterfowl, waders, and other bird species
WildResearch’s Iona Island Bird Obervatory is a critical part of bird research and the birding community at Iona
Iona Island is a regional hot spot for birding and brings local and international visitors to the park
Opportunities for enhancing ecological values and processes Creating or enhancing coastal sand Increasing freshwater inflows to “Iona ecosystems Bay” / interjetty area * Restoring habitat connectivity and Replenishing sediment and adapting ecosytem processes to sea level rise
Questions? Nick Page | Raincoast Applied Ecology Email. nick@raincoastappliedecology.ca Phone: (604) 724-4845
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