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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
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      • Traffic Noise
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      • Water Quality/Wetlands
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      • Context Sensitive Solutions
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  2. Research Idea (TERI)

Plant/Soil Zones to Prevent Movement of Copper and Zinc from Roads

By Amber GarnettMay 7, 2021Leave a comment

I. Research Problem Statement Due to automobile braking, roadside sediments in heavily trafficked regions have high levels of copper and zinc compared to sediment quality. Recent use of bio-retention filters…

Intellectual Property Rights for Environmental Data and Information

By Amber GarnettMay 7, 2021Leave a comment

Problem Statement A potentially major barrier to sharing data in environmental and related management systems is intellectual property rights, including copyrights, licensing, and terms of use. Although state Departments of…

Development of Environmental Performance-Based Mitigation Systems

By Amber GarnettMay 7, 2021Leave a comment

Problem Statement The current practice for mitigating environmental impacts of transportation projects is to mitigate only specific impacts on specific resources without consideration of which produces the best environmental result.…

Treatments and Quantification for Noise Reduction and Improved Surface Characteristics

By Amber GarnettMay 7, 2021Leave a comment

I. Research Problem Statement – Concerns about pavement noise continue to be expressed in many urban areas in the United States. Comprehensive studies have been completed in Europe resulting in…

Managing Environmental Impacts of Erosion and Sedimentation of and from Low-Volume Roads

By Amber GarnettMay 7, 2021Leave a comment

I. Research Problem Statement: Erosion (runoff) and sedimentation of and from low-volume roads can adversely impact the environment. Many low-volume roads are soil or aggregate surfaced, have steeper grades than…

Stormwater Treatment with Vegetated Buffer

By Amber GarnettMay 7, 2021Leave a comment

TERI Administrator Note (January 2009): Funded under NCHRP 25-25 (53). Background: The New Hampshire Department of Transportation has recently been issued a number of Water Quality Certifications by the NH…

Guidelines for the Development of Bioretention Stormwater Treatment on the Roadside

By Amber GarnettMay 7, 2021Leave a comment

I. Problem Statement: There is increasing evidence that nutrients are major constituents in highway runoff. This varies with the area of ROW as well as the vegetation types and adjacent…

Informational Requirements for Jurisdictional Determinations to be Issued by the Army Corps of Engineers (Corps) Under the Clean Water Act (CWA)

By Amber GarnettMay 7, 2021Leave a comment

TERI Administrator Note (January 2009): Funded as NCHRP Project 25-25 (52). Background: Under the Clean Water Act, the Corps is delegated the authority to permit the discharge of dredged or…

Managing Rights-of-Way for Biomass Generation and Carbon Sequestration

By Amber GarnettMay 7, 2021Leave a comment

Right-of-way vegetation management is a major responsibility of the State DOTs.  Traditionally, roadside vegetation was managed for a variety of purposes important to the public, such as safety, roadway integrity,…

Survey and Mapping of Invasive Species Population in Highways’ Rights-of-Way by Absence-Presence Sampling Methods

By Amber GarnettMay 7, 2021Leave a comment

By law, Departments of Transportation are required to control noxious weeds along highway rights-of-way (ROWs). Beginning 2000, District 4 (D4) of Minnesota Department of Transportation (Mn/DOT) adopted a survey design…

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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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