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Line 60: − − − − − − Large-scale projects require significantly more effort, budget, − and staff than small-scale projects. Large-scale LID retrofits − include: − * Bioretention − * Enhanced grass swales − * Bioswales − * Perforated pipe systems − * Permeable pavement − * Soakaways − * Infiltration chambers − * Rainwater harvesting (excluding rain barrels) − * Prefabricated modules − * Green roofs − − Consider a large-scale project if your municipality or − department would like to be a leader in sustainability. Large-scale − projects are often highly visible and attract more public − attention. Large-scale projects may also be the only solution − to site-specific challenges. For example, if site infrastructure − is at risk as a result of urban flooding, LID practices that detain − large volumes of runoff and encourage infiltration are the − most viable LID options. − Before starting a large-scale retrofit project, consider the − following distinctions that set these retrofits apart from small-scale − projects. − − ===Integration with capital works programs=== − − Most large-scale LID retrofits must function with existing − site infrastructure, such as storm sewers, catch basins, − and pavement systems. The construction of large-scale − LID practices often requires these systems to be removed, − exposed, or replaced. The best time for this type of project to − occur is when an infrastructure replacement or rehabilitation − project is already planned. − − When LID retrofits are worked into other construction − projects, such as parking lot repaving, or grading or drainage − improvements, there can be substantial cost savings. − Whether big or small, every municipality spends relatively − large sums of money and substantial time planning for − major capital projects. This includes redevelopment of public − building and spaces. Many communities who have undertaken − retrofits recognize that even if a relatively small portion of the − project funds goes towards LID retrofits, they can retrofit large − impervious surfaces and avoid new stormwater management − infrastructure projects17. − − Municipal facility rehabilitation is typically forecast well in − advance of the project. Parking lot paving is typically worked − into municipal budgets based on expected life cycle and − observed wear. As such, funds may be set aside prior to − the project planning phases. Long-term forecast budgets − may also be available for site revitalizations or expansions. − These budget forecasts provide opportunities to compare the − capital and life-cycle costs and benefits of the conventional − construction project and LID retrofit.
LID opportunities at municipal facilities (view source)
Revision as of 17:57, 19 December 2017
, 6 years agono edit summary
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[[Category:Planning]]
[[Category:Planning]]