I-90 West of George Paving - Warm Mix Asphalt
The Washington State Department of Transportation (WSDOT) paved about 5,000 tons of warm mix asphalt (WMA) as part of their I-90 West of George Pav...
Greenroads Manual
EW-6: Habitat Restoration
2 points
Goal
Maintain or improve biological integrity of receiving watersheds or improve an offsite habitat area.
Requirements
- Complete a biological assessment that determines the current Index of Biological Integrity (IBI) score based on the lowest practical taxonomic level for local bioindicator species for a watershed receiving stormwater runoff from the roadway right-of-way or at an offsite location (e.g. a wetland bank).
- Determine the applicable regional or site-specific reference stream condition level for IBI as shown in Table EW-6.1.
- Implement a restoration plan that:
- Restores an area equal to the total disturbed surface area of the project.
- States the watershed’s current IBI and the restoration goal IBI.
- Describes ecological design or engineering elements that are expected, with reasonable professional certainty, to raise the overall IBI score by one stream condition level as shown in Table EW-6.1. Include a description of data collection activities, existing watershed data and data quality.
- Lists responsible parties for restoration activities.
- Lists sources of funding for restoration activities.
- Completes restoration activities by the time the roadway facility opens to traffic. Include a schedule of restoration activities.
- Is signed and approved by the responsible parties or the project ecologist.
Documentation
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