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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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Mitigation Methods for Joint Noise

By ahardingMay 7, 2021Leave a comment

Objective would be to investigate various methods of mitigating noise from joints on overpasses. Look for practical methods that are both cost effective and easy to install/maintain. These methods can…

Construction Emissions Analysis Procedures

By ahardingMay 7, 2021Leave a comment

Background:  Construction activities can produce fugitive dust and exhaust emissions of criteria pollutants from heavy duty construction equipment.  The AASHTO Air Quality Community of Practice issued State of the Practice…

Develop and Evaluate a GIS-based Application for Illinois Department of Transportation Sustainability Initiatives

By ahardingMay 7, 2021Leave a comment

The study would evaluate the Illinois Department of Transportation’s sustainability initiatives from a geographic perspective and identify gaps, statewide gaps in sustainability. The study would work in tandem with the…

Developing Historic Contexts for Roads: A Model for Identification and Evaluation

By ahardingMay 7, 2021Leave a comment

PROBLEM Historic roads are an intrinsic part of the nation’s heritage, representing different periods and trends in engineering design from the wagon roads that survive in rural areas to early…

The effects of pile driving on the Atlantic Shortnose Strugeon

By ahardingMay 7, 2021Leave a comment

With the 2012 listing of the Atlantic Shortnose Sturgeon to the threatened and endangered species list the Virginia Department of Transportation has had to produce two noise analyses for a…

Stormwater Asset Management for Regulatory Compliance and Practical Operations and Maintenance

By ahardingMay 7, 2021Leave a comment

Transportation agencies across the nation are charged with operating and maintaining stormwater infrastructure associated with roadways to ensure runoff is efficiently removed from impervious surfaces and discharged to nearby waterbodies…

Evaluating the benefits of Continuous Monitoring and Adaptive Control (CMAC) technology

By ahardingMay 7, 2021Leave a comment

Post Construction Best Management Practices (BMPs) are required by DOT NPDES Permits and applicable Total Maximum Daily Loads (TMDLs) to reduce pollutant loadings that are discharged into receiving waters from…

Hydrology for Water Quality Analysis and Design

By ahardingMay 7, 2021Leave a comment

State, county, and other departments of transportation are increasingly subjected to water quality requirements specifying reduction of stormwater flows and their associated pollutants from new and existing roads. Most water…

Alternatives to Chlorides for De-icing

By ahardingMay 7, 2021Leave a comment

Many DOTs across the country apply salt (estimated at 22 million tons annually in the US) during the winter to lower the freezing point and accelerating the melting process. Unfortunately,…

Threat Assessment for Japanese Knotweed

By ahardingMay 7, 2021Leave a comment

We wish to ascertain the impact of Japanese knotweed on the stability and lifespan of roads, bridges, and other infrastructure near waterways. Japanese knotweed is one of the world’s worst…

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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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