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Center for Environmental Excellence | AASHTO
Center for Environmental Excellence | AASHTO
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  • Laws & Agreements
    • Programmatic Agreements Library (PAL)
    • Case Law Updates on the Environment (CLUE)
    • National Environmental Policy Act (NEPA)
    • NEPA Assignment
  • State of the Practice
    • Case Studies
    • Communities of Practice
    • Practitioner Interviews
  • Education
    • Environmental Topics
      • Active Transportation
      • Air Quality
      • Climate Change
      • Environmental Justice
      • Invasive Species/Vegetation
      • Stormwater
      • Sustainability
      • Traffic Noise
      • Waste Management/Recycling
      • Water Quality/Wetlands
      • Wildlife and Ecosystems
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      • Context Sensitive Solutions
      • Emerging Technologies
      • Environmental Management Systems
      • Geographic Information Systems
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  2. Research Idea (TERI)

Extreme weather impacts on driver safety

By Amber GarnettMay 7, 2021Leave a comment

Extreme weather impacts on driver safety and the development of next generation analytical tools to improve hazard analysis and causal factor traceability of those impacts is an important next step…

Evaluating Northern Long Eared Bat use of trees along highway corridors

By Amber GarnettMay 7, 2021Leave a comment

Very little information is available on the Northern Long Eared bat’s likely use of vegetation flanking highway corridors. The objective of this research is to review existing data on the…

Survey and compilation of on- and off-structure bat mitigation approaches and designs

By Amber GarnettMay 7, 2021Leave a comment

Survey of DOTs, MPOs, LPAs and NGOs regarding bat management strategies, mitigation on and off structures, effectiveness, and general cost benefit analysis including maintenance implications and costs.

Long-Term Cost/Benefit Analysis of Traditionally Sized Structures versus Aquatic Wildlife Friendly Structures and Culvert Replacement Cost Estimator

By Amber GarnettMay 7, 2021Leave a comment

Traditionally, state and local governments install the smallest structure necessary to pass a certain measurable flow as required by local, state and federal rules. Structures that are sized to bankfull-width…

Survey and compilation of effective designs for promoting sensitive reptile and amphibian crossings of roadway corridors

By Amber GarnettMay 7, 2021Leave a comment

Survey of DOTs, MPOs, LPAs and NGOs regarding designs for promoting sensitive reptile and amphibian crossings of roadway corridors, effectiveness, and general cost benefit analysis including maintenance implications and costs.…

The Efficacy of Treating Highway Runoff to Meet Watershed TMDL Goals

By Amber GarnettMay 7, 2021Leave a comment

Background: State Departments of Transportation (DOTs) are being named as Designated Management Agencies in Total Maximum Daily Load (TMDL) management plans. This designation often brings with it the obligation for…

Survey of wildlife-friendly temporary and permanent erosion control products and approaches

By Amber GarnettMay 7, 2021Leave a comment

Survey and compilation of information on erosion control products that are safe for sensitive reptiles and amphibians (netting-free) and erosion control treatments (alternatives to rip rap) that do not block…

Development of a Model Monitoring Program for a DOT

By Amber GarnettMay 7, 2021Leave a comment

Background: Many NPDES Permits require DOTs to monitor receiving waters to characterize runoff from DOT facilities, assess the effectiveness of BMPs, and for compliance with TMDLs. Monitoring programs require considerable…

Survey of state and sensitive species databases characteristics and user ratings; which characteristics make online species databases most useful to users?

By Amber GarnettMay 7, 2021Leave a comment

Survey of DOTs on use of on-line species databases and available GIS data. Which databases are most useful and what are the characteristics that make them useful (resolution and accuracy…

Porous Aspahlt Pavement Maintenance Evaluation

By Amber GarnettMay 7, 2021Leave a comment

The use of porous asphalt pavement (PAP) can purify stormwater runoff and recharge the groundwater. PAP is one of the acceptable structural Best Management Practices (BMPs) that can be used…

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The Center for Environmental Excellence by the American Association of State Highway and Transportation Officials (AASHTO) has been developed in cooperation with the Federal Highway Administration to promote environmental stewardship and to encourage innovative ways to streamline the transportation delivery process.

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