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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
    • Practical Applications
      • Context Sensitive Solutions
      • Emerging Technologies
      • Environmental Management Systems
      • Geographic Information Systems
      • NEPA Process
      • Planning & Environment Linkages
      • Project Delivery
      • Protecting Cultural Resources
      • Public Involvement
      • Transportation Policy
      • Using the Practitioner’s Handbooks
  • News
  • Meetings & Events
    • Past Events
  • Resources
    • Practitioner’s Handbooks
    • AASHTO Publications
    • AASHTO Standing Committees
    • Federal & State Agencies
    • Trade Associations
    • Research
      • NCHRP 25-25
      • TERI Database
      • TRB Committees

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Road Deicers: Which Are Best Tolerated by Amphibians?

By ahardingMay 7, 2021Leave a comment

Widespread contamination of freshwater habitats and groundwater sources from road salt deposition is well documented. The negative effects of road salt on freshwater habitats include changes in density gradients, increased…

Impacts of Highway Noise on Migratory Birds

By ahardingMay 7, 2021Leave a comment

TERI Database Administrator Notes.  Not recommended at present time by 2009 Natural Systems Subcommittee.  Subcommitee recommended funding ID#456, which addresses similar issues. This would be a follow-up to research on the…

Preventing Wildlife Kills on Railroads

By ahardingMay 7, 2021Leave a comment

Train-wildlife collisions are devastating to wildlife populations, and disproportionately so, to species such as moose, grizzly bear, wolverine, and wide-ranging carnivores in general, which have low reproductive rates.  Habitat fragmentation…

The Effectiveness of Vertebrate Passage and Prevention Structures: a Study of Boeckman Road in Wilsonville

By ahardingMay 7, 2021Leave a comment

TERI Administrator Update (Jan 2009) – Research Underway – The Effectiveness of Vertebrate Passage and Prevention Structures: a Study of Boeckman Road in Wilsonville (completion date: Sept. 2009) Wildlife collisions…

Confocal Microscopy Used to Profile Coral Diseases and to Distinguish Infectious Disease from the Effects of Chemical Pollution, and the Effects of Climate Change

By ahardingMay 7, 2021Leave a comment

Confocal Microscopy coupled with vital stains, can be used to characterize and profile disease states in coral. We wish to compare the appearance of various reef forming coral and algal

Development and Implementation of a Multi-State Relocation Plan for Federally Endangered Mussels

By ahardingMay 7, 2021Leave a comment

Development and implementation of multi-state plans/strategies for relocation of endangered freshwater mussels from thriving source populations to rivers within the historical range of these species for the purposes of augmentation…

Transportation Conformity under EPA’s Revised 8-hour Ozone NAAQS

By ahardingMay 7, 2021Leave a comment

TERI Database Administrator Notes:  Not recommended at present time by 2009 Air Quality Subcommittee.  With so many new areas likely to be designated nonattainment under EPA’s revised 8-hour ozone standard,…

Environmental and Air Quality Impact of Demand Responsive Transit Services

By ahardingMay 7, 2021Leave a comment

The environmental performance of public transportation services plays a key role in improving air quality in urban areas. Replacing vehicles’ current engines with innovative propulsive systems may be an effective…

Development of an Environmental Hazard Assessment System for the Transport of Hazardous Materials

By ahardingMay 7, 2021Leave a comment

TERI Administrator Note (February 2009):  The concept for this research information need was first developed as a suggested demonstration project in TRB Special Report 283, Cooperative Research for Hazardous Materials…

Use of Bio-Degradable Oils by State Maintenance Crews

By ahardingMay 7, 2021Leave a comment

Background Throughout the US, state DOTs are striving to develop more comprehensive transportation programs that provide infrastructure and services with less impact on the surrounding environment. Great efforts have been…

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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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