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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
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    • Past Events
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    • Practitioner’s Handbooks
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    • AASHTO Standing Committees
    • Federal & State Agencies
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    • Research
      • NCHRP 25-25
      • TERI Database
      • TRB Committees

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A Tool For Advancing AERMOD Project-Level Near-Road Air Quality Analysis Based on Satellite Image Maps

By ahardingJune 17, 2021

As the U.S. Environmental Protection Agency (EPA)’s preferred air dispersion model for refined transportation project analyses, AERMOD is used to model roadway “link” source using AREA, VOLUME, LINE, RLINE, or…

Lessons Learned from Project-Level Air Quality Analyses for Particulate Matter

By ahardingMay 20, 2021Leave a comment

Regulatory requirements for conducting quantitative project-level analyses for particulate matter (PM) were introduced by EPA with the release of the MOVES model in 2010. This proposed study would prepare a…

Defining Areas of Potential Effects: State of the Practice

By ahardingMay 20, 2021Leave a comment

A nationwide survey of how transportation agencies from all levels are successfully defining Areas of Potential Effect (APEs) for projects across the country. APEs are defined as part of the…

Durable and Compatible Concrete Repair of Historic Bridges

By ahardingMay 20, 2021Leave a comment

Many bridges that have been determined eligible for the National Register of Historic Places possess concrete components in need of repair. The Secretary of Interior Standards for concrete repair cannot…

Design, Organize and Implement a Training Program for Mainstreaming Environmental Stewardship and Enhancement Activities into Planning and Project Development

By ahardingMay 7, 2021Leave a comment

TERI Administrator Note (2/18/08): Funded as NCHRP Project 25-25 (55) “Design, Organize and Implement a Training Program for Mainstreaming Environmental Stewardship and Enhancement Activities into Planning and Project Development“ Design…

Best Practices in Environmental Training

By ahardingMay 7, 2021Leave a comment

With current reductions in funding for State DOTs and agencies, environmental teams have to find new and cost effective ways to better training and educate a shrinking workforce.  This effort…

Feasibility Study of Using Solar or Wind Power for Transportation Infrastructure

By ahardingMay 7, 2021Leave a comment

The scope of the research will include a comprehensive survey of the various types of solar and wind power systems available, their ability to provide sufficient or excess power for…

Methods to Address Greenhouse Gas Emissions from Transportation Construction/Maintenance/Operations Activities

By ahardingMay 7, 2021Leave a comment

TERI Administrator Note (January 2009): Idea selected for implementation with NCHRP 25-25 (Task 58) funding in 2009; completed August 2010 Background:   Greenhouse gas emissions and the related subject of…

Comparing Actual Environmental Impacts of Projects with Predicted NEPA Environmental Impacts

By ahardingMay 7, 2021Leave a comment

Background   NEPA environmental documents for projects reflect substantial time and money analyzing and predicting environmental impacts. Decisions on those projects are made based on that information. There is limited or no information…

New Noise Barrier Products & Noise Barrier Approval Research & Guidelines

By ahardingMay 7, 2021Leave a comment

TERI Administrator Note (January 2009): Funded as NCHRP Project 25-25, Task 40. Completed January 2008. http://www.trb.org/TRBNet/ProjectDisplay.asp?ProjectID=1658 Background:   The cost and total quantity of noise barriers as an environmental abatement…

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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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