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[[File:Landforms of a place of worship.JPG|thumb|Source areas within a typical place of worship]]
 
[[File:Landforms of a place of worship.JPG|thumb|Source areas within a typical place of worship]]
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Each distinct area of your site can be a source for runoff
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Each distinct area of a place of worship can be a source for runoff
 
(referred to as a ‘source area’). One or more of these areas
 
(referred to as a ‘source area’). One or more of these areas
 
should be targeted when introducing LID at your place of
 
should be targeted when introducing LID at your place of
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this way, it can be easy to integrate harvesting systems into
 
this way, it can be easy to integrate harvesting systems into
 
the landscape surrounding your building.
 
the landscape surrounding your building.
 +
 
Roof runoff can also be directed to soakaways located on
 
Roof runoff can also be directed to soakaways located on
 
passive use areas around your building. Due to the relatively
 
passive use areas around your building. Due to the relatively
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* Parking lot
 
* Parking lot
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On park sites, pollution prevention is often associated with
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At places of worship, pollution prevention is often associated with
 
changes to operations and maintenance practices and has
 
changes to operations and maintenance practices and has
not been included in Table 6.3.1. An aerial photo of a park
+
not been included in the table below.  
with each of these source areas accompanies Table 6.3.1.
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Options and implementation strategies for a few of these
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source areas will give you some ideas for your park site.
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The scale
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of your LID retrofit project will largely determine how you will
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proceed. You can usually complete
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small-scale LID projects with in-house expertise and
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resources. Large-scale projects will require external support
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from consultants and contractors.
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===Small-scale projects===
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Starting with small-scale projects is a good strategy to
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increase interest within your community, determine if
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support is available from stakeholder groups and gain retrofit
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experience. Small-scale projects include retrofitting your
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property with landscape alternatives, rain barrels or using
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pollution prevention strategies and practices.
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Small-scale projects require few resources and a
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small project budget because:
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* They do not require integration into capital works projects
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* Engineering consultants are not required
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* Contractors are not required
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* External approvals are not required
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* Consultation with the public is limited
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Due to the less significant financial commitment, it can be
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easier to build the case for support for small-scale projects.
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A successful small-scale LID retrofit project on your property
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is a good indication that you are ready to take on a more
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intensive retrofit project. You now know the resources that Large-scale projects
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Large-scale projects require significantly more effort, budget,
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and staff than small-scale projects. Large-scale LID retrofits
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include:
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* Bioretention
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* Enhanced grass swales
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* Bioswales
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* Perforated pipe systems
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* Permeable pavement
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* Soakaways
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* Infiltration chambers
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* Rainwater harvesting (excluding rain barrels)
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* Prefabricated modules
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* Green roofs
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Consider a large-scale project if your place of worship is
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striving to be a community leader in sustainability. Large-scale
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projects are often highly visible and attract more public
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attention. They may also be the only solution
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to site-specific challenges, like poor drainage. Before starting
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a large-scale retrofit project consider the distinctions that set
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these retrofits apart from small-scale projects.
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===Integration with long-term infrastructure replacement and rehabilitation plans===
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Most large-scale LID retrofits must function with existing
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site infrastructure, such as storm sewers, catch basins,
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and pavement systems. The construction of large-scale
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LID practices often requires these systems to be removed,
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exposed, or replaced. The best time for this type of project is when an infrastructure replacement or rehabilitation
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project is already planned.
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Maintenance programs and budgets that take into consideration
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the expected life cycle of critical site components, including
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parking lot and roofs, are valuable resources for large-scale
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projects. If the replacement of these features is forecasted in
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your site budget well in advance, asses if it is advantageous
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to incorporate LID retrofits into these projects. Remember,
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sharing construction materials, construction equipment, staff
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resources, and time will reduce the budget for your retrofit.
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For example, installing bioretention, infiltration chambers,
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or permeable pavement in a parking lot will require the
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existing pavement to be removed. Budget and resources that
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have been set aside for a parking lot replacement could be
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transferred to the LID retrofit project.
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===Involvement of consultants and contractors===
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Consultants are required for large-scale retrofit projects,
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specifically for the final screening of options, pre-design,
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detailed design, tender and contract documents, construction
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supervision and administration, and assumption and
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verification.
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Site contractors are also required for large-scale LID retrofits.
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Contractors should be pre-qualified based on previous
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experience with similar LID projects.
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External approvals
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Large-scale retrofits may require a variety of approvals at the
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municipal, watershed, provincial, and/or federal level.
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Since LID is still relatively new, you may encounter policies
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or bylaws that present barriers to LID retrofit projects.
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Alternatively, the municipality may have to amend or enforce
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some policies and bylaws to facilitate the implementation of
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LID projects on your site.
      
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{| class="wikitable sortable" style="text-align: center;"
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