||Southern Gulf Islands
The CRD is one of six water license holders tied to lands adjacent to Gardom Pond and held as part of the Pender Island Parks and Recreation Service. Gardom Pond has been classified as "high consequence" and in 2017 the water license holders agreed to decommission the pond.
The CRD received $460,000 in federal and provincial grant funding through the National Disaster Mitigation Program (NDMP) for the decommissioning of Gardom Pond dam on Pender Island.
A tender for the decommissioning works was issued on April 10, 2019 and the contract was awarded in May 2019. Construction is underway and expected to occur until Fall 2019. See the Project Update for more information.
The decommissioning design lowers the existing level of Gardom Pond approximately two metres which maintains a water body while eliminating the risk of dam breach and subsequent downstream flooding. An environmental impact assessment of the lowering of the water level in Gardom Pond has been conducted and construction is underway.
Decommissioning construction will involve modifications to the existing dam embankment and fortifying the existing stream outlet channel extending south to Harbour Hill Drive. The channel will be able to pass a 200-year period design flow and will be lined with large riprap and measure approximately 3m wide by 0.45m deep. The existing low-level outlet pipe extending through the dam embankment will be sealed with concrete. There will remain sufficient water volume in the decommissioned reservoir to satisfy fire protection provided by the Gardom Pond dry hydrant. Modifications to the existing 6” dry hydrant located on Gardom Lane directly to the west of the dam embankment are included.
The dam decommissioning concept was developed over several years considering, and in consultation with, the following stakeholders:
- The six water license holders held on Gardom Pond dam
- Ministry of Forests, Lands, Natural Resource Operations & Rural Development, Regional Dam Safety Officer
- Ministry of Transportation and Infrastructure, South Island Operations Manager
- Pender Island Fire Rescue, Fire Chief
- Islands Trust, Regional Planning Manager
- Island Trust Fund, Manager
- Razor Point Improvement District with regards to their land encumbrance for water supply lines, Trustee