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| *Side drainage ditches are often narrow, poorly graded,and can be difficult for homeowners to maintain | | *Side drainage ditches are often narrow, poorly graded,and can be difficult for homeowners to maintain |
| *Utilities are often in separate trenches rather than a combined utility trench | | *Utilities are often in separate trenches rather than a combined utility trench |
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| | {|class="wikitable" |
| | |+ Opportunities for rural cross section |
| | |- |
| | ! Within the roadway |
| | ! Within the boulevard |
| | |- |
| | |Use of [[permeable paving]] within the roadway is not economical when there are adjacent [[swales]] to filter and infiltrate runoff |
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| | *[[Bioswales]] or the use of [[perforated pipes]] beneath grass swales can reduce the nuisance problems associated with conventional swales like standing surface water and steep slopes |
| | *Permeable pavement systems can be used to stabilize and improve degraded shoulders |
| | *Converting degraded ditches to [[enhanced grass swales]] is the simplest LID improvement to make to residential rural cross-section roads. Driveway culverts can be slightly raised to provide storage and encourage infiltration. |
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| ===Typical opportunities for rural cross section=== | | ===Typical opportunities for rural cross section=== |
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| '''Within the boulevard:''' | | '''Within the boulevard:''' |
| *[[Bioswales]] or the use of [[perforated pipes]] beneath grass [[swales]] can reduce the nuisance problems associated with conventional swales like standing surface water and steep slopes
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| *Permeable pavement systems can be used to stabilize and improve degraded shoulders
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| *Converting degraded ditches to [[enhanced grass swales]] is the simplest LID improvement to make to residential rural cross-section roads. Driveway culverts can be slightly raised to provide storage and encourage infiltration.
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| ===Urban cross-section=== | | ===Urban cross-section=== |