United States Department of Transportation
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Stream & Wetland Mitigation Forecasting: Developing a Predictive Model for Faster Project Delivery and Cost-Savings [Fact Sheet]
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2022-06-01
[PDF-3.01 MB]
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Abstract:Wetlands and streams provide numerous ecosystems services and are protected under federal and state laws. These regulations require permits when fill material is discharged into regulated streams and wetlands from roadway construction and maintenance activities, which also can require compensatory mitigation. Environmental review, permitting, and mitigation are time-consuming with the overall permitting process taking months to years to complete. ODOT cannot begin road construction or maintenance activities until impacted streams and wetlands are identified, permits have been obtained and mitigation is secured. ODOT seeks to streamline this process to reduce project delivery time and cost. In addition to planning timelines, ODOT plans for project costs within budget periods. For ODOT to develop accurate budgets, mitigation requirements and costs must be identified. Existing maps and information on streams and wetlands such as the National Wetlands Inventory (NWI) are outdated and often omit smaller wetlands and streams.
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