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LID opportunities at municipal facilities (view source)
Revision as of 16:38, 18 December 2017
, 7 years agono edit summary
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[[File:Figure 4.3.7 (G-to-G Public Lands).JPG|Options and implementation strategies for a few of these source areas will give you some ideas for a park site.]]
[[File:Figure 4.3.7 (G-to-G Public Lands).JPG|Options and implementation strategies for a few of these source areas will give you some ideas for a park site.]]
+
+===Small-scale projects===
+Starting with small-scale projects is a good strategy to
+increase public interest in LID practices, gauge municipal
+support, and gain retrofit experience. Small-scale projects
+include retrofitting your site with landscape alternatives or rain
+barrels, enhancements of existing swales, or using pollution
+prevention strategies and practices.
+
+Small-scale projects require fewer resources and require a
+smaller project budget because:
+* They do not require integration into capital works
+projects
+* Engineering consultants are not required
+* Contractors may not be required
+* External approvals are not required
+* Consultation with the public is limited
+
+Due to this smaller financial commitment, it can be easier
+to build colleague and supervisor support for small-scale
+projects.
+
+[[Pollution prevention|Pollution prevention (P2)]] projects are great
+small-scale projects for municipal facilities
+like public works yards. To learn more about
+implementing P2 on your site, '''refer to the case studies on Armstrong Manufacturing Inc, Bernardi Building Supply Ltd. and Unifay-Fedar Investments in Appendix B.'''
+
+Many P2 techniques and strategies do not require
+construction, consultants or contractors. Adding signage to a
+site is a simple and easy to implement pollution prevention at
+municipal facilities.
+
+A successful small-scale LID retrofit project on your municipal
+site is a good indication that you are ready to take on a more
+intensive retrofit project. You now know the resources that are
+available and understand the internal municipal processes
+required to move a LID project from planning to finished
+product.
+
+===Large-scale projects===
+
+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.
+
+===Involvement of consultants and contractors===
+Consultants are required for large-scale retrofit projects,
+specifically for the final screening of options, pre-design,
+detailed design, tender and contract documents, construction
+supervision and administration, and assumption and
+verification.
+
+Site contractors are also required for large-scale LID retrofits.
+Ideally, contractors should be pre-qualified based on previous
+experience with similar LID projects.
+Remember, the contractor with the lowest bid
+does not necessarily deliver the best product.
+
+===More intensive public consultation===
+
+Stakeholders must be closely involved in the retrofit process
+for large-scale LID projects. These projects have longer
+construction windows, may have significant impacts on long-term
+public use patterns of the site, and will cost significantly
+more taxpayer dollars.
+
+Gaining public insight in advance of LID implementation can
+help address public concerns and information gaps, as well as identify public supporters and champions. Public consultation
+can help designers tailor the project to address community
+concerns and values. Consultation can also help the design
+team integrate the LID practice into the site’s landscape.
+
+===External approvals===
+
+Large-scale retrofits may require a variety of approvals at the
+municipal, watershed, provincial, and/or federal level.
+Since LID is still relatively new, you may encounter policies
+or bylaws that present barriers to LID retrofit projects.
+Alternatively, the municipality may have to amend or enforce
+some policies and bylaws to facilitate the implementation of
+LID projects on your site.
[[Category:Planning]]
[[Category:Planning]]