The Project will provide significant positive impact to the local community. The Project will mitigate localized flooding, address water quality and conservation measures, improve site aesthetics, and provide recreational opportunities for local residents. The concrete lined detention basins is designed to accommodate the stormwater storage capacity equivalent to a 10-year storm event. Surface storm water flows on Tujunga Avenue will be channeled underground and diverted to the detention basins for storage. Approximately 5 cfs of stormwater will then be pumped from the basins to the wetland treatment prior to conveyance to the existing chambers at Sun Valley Park for ground infiltration. The project will also accommodate the local community residents with much needed recreational public space.
EnvISIon Quality of Life
The proposed project scored high in the Quality of Life category. The transformation of an inert landfill to a flood control facility, wetland, and park greatly benefits the local community at many levels. The project virtually eliminates the local street flooding, which enhances public safety and health issues and provides much needed public space for active and passive recreation. The proposed project will require significant maintenance, which could provide local jobs.
DPW provided superior leadership and coordination for developing the Sun Valley Watershed Management Plan. For Strathern Pit Wetlands Project, community and stakeholder involvement and input resulted in a transformative project that met the needs of the LACFCD, local residents, and businesses. The project integrates with other Sun Valley Watershed Projects such as Sun Valley Park and Tuxford Drain to manage stormwater flows, improve water quality, and provide water conservation. Sustainability is one of the core values for DPW to design innovative projects such as for Strathern Pit Wetlands Projects.
EnvISIon Resources Allocation
The score for Resource Allocation category was low mainly due to DPW policy and standard practices for design. For example, DPW standard contract specifications do not specify for Contractors to use regional materials, recycle their byproducts, or use products from manufacturers' that support sustainable practices. However, the Project Engineer may consider these provisions for the project in the final design specifications. DPW do not commission or monitor energy systems nor perform net embodied energy study as these may be cost prohibitive for a publicly funded infrastructure project.
EnvISIon Natural World
The Natural World category attained a high score mainly due to the restoration of floodplain functions and the effective management of stormwater. The construction of detention basins and wetland will store and treat stormwater respectively from the affected watershed area prior to ground infiltration. All these sustainable features were covered in the Natural World category. The project also restores native habitat to the project site where possible.
EnvISIon Climate and Risk
The project scored relatively low for the Climate and Risk category. Comprehensive life cycle carbon analysis and climate impact assessment plan are not typical in DPW's infrastructure projects. These tasks may be considered, but are probably cost prohibitive and provide no significant changes to the project. The detention basins will provide adequate flood protection for the surrounding community.
EnvISIon Overall Rating