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| + | ==Monitoring== |
| + | Unlike centralized stormwater management facilities, the LID approach involves the installation of many smaller stormwater management practices distributed across the landscape. Therefore, it is often not cost effective to conduct functional and/or performance monitoring of every practice.<br> |
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| + | For this reason, an effective monitoring program will ensure that all practices undergo the inspections detailed above, but only representative practices are selected for continuous functional and/or performance monitoring. Since functional monitoring is relatively simple and cost effective to undertake, it may be applied to a larger number of features than would be possible if more quantitative data on performance was required. Detailed performance monitoring should be reserved only for new technologies or new configurations of practices for which local data on performance is lacking.<br> |
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| + | Stormwater practices suitable for functional monitoring may include ones that: |
| + | # have [[Inspection and Maintenance: Underground Infiltration Systems|underground drainage pathways]] that may not be captured through visual inspections; |
| + | # have undergone design modifications during construction that may have influenced system function; |
| + | # were identified during visual inspections as having potential deficiencies; |
| + | # could benefit from additional monitoring to refine planned maintenance programs or elucidate system response and function during [[Understanding rainfall statistics|rain events]] of varying size |