ND-Plan-v4 SLLc6: Steep slope protection
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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
The following requirements apply to projects sites that have slopes greater than 15%. Ensure that the share of the development footprint on existing slopes less than 15% is greater than the share of the project site with existing slopes greater than 15%. On any existing, previously developed slopes steeper than 15%, restore the slope area with native plants or noninvasive adapted plants, according to Table 1. In addition, on any existing, undeveloped slopes steeper than 15%, limit the development area according to Table 1.
Table 1. Required restoration and protection areas of slope
Slope |
Previously developed slopes: |
Undeveloped slopes: |
|---|---|---|
> 40% |
100% |
No development permitted |
26% to 40% |
60% |
40% |
>15% to 25% |
40% |
60% |
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Credit language
© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
The following requirements apply to projects sites that have slopes greater than 15%. Ensure that the share of the development footprint on existing slopes less than 15% is greater than the share of the project site with existing slopes greater than 15%. On any existing, previously developed slopes steeper than 15%, restore the slope area with native plants or noninvasive adapted plants, according to Table 1. In addition, on any existing, undeveloped slopes steeper than 15%, limit the development area according to Table 1.
Table 1. Required restoration and protection areas of slope
Slope |
Previously developed slopes: |
Undeveloped slopes: |
|---|---|---|
> 40% |
100% |
No development permitted |
26% to 40% |
60% |
40% |
>15% to 25% |
40% |
60% |