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Save the Date: June 4-8, 2023 – AASHTO Committee on Environment and Sustainability Annual Meeting
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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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Can Sidewalks/Trails be Combined with Stormwater Improvements? Can Utility and Transportation Corridors be Combined?

By ahardingMay 7, 2021Leave a comment

Scope: Determine which utility/transportation projects are compatible from a construction and maintenance standpoint.  Develop planning, design, and construction techniques to facilitate the joint projects

Contribution of Zinc from Highway Fixtures: Targeted Monitoring

By ahardingMay 7, 2021Leave a comment

Zinc is an important targeted constituent for Departments of Transportation (DOTs). The average concentration in highway runoff exceeds water quality objectives. For individual storms, the measured concentrations of total zinc in highway discharge…

Contribution of Tire Weights to Lead in Runoff

By ahardingMay 7, 2021Leave a comment

Lead tire weights used to balance wheels may be a substantial source of lead in the highway environment. These weights are sometimes released from wheels and then abraded by traffic,releasing lead into…

Salt/Deicing Practices Source Control

By ahardingMay 7, 2021Leave a comment

The objective of this study is to determine the optimum timing and application rates of various deicing materials.  A variety of standard tests can be conducted to determine the effectiveness of various chemicals, including:…

Nutrient (Nitrogen/Phosphorus) Management and Source Control

By ahardingMay 7, 2021Leave a comment

EPA has reported recently that the amount of nitrogen and phosphorus pollution entering our waters has escalated dramatically over the last 50 years, and that this trend will continue with US population…

On-road Traffic Operation Data Aligned with Model Validation Need for Project-Level PM2.5 Conformity Analysis

By ahardingMay 7, 2021Leave a comment

When applying MOVES (MOtor Vehicle Emission Simulator) in project-level PM (particulate matter) conformity analysis, link-based traffic characteristics are required at local on-road level so as to ensure realistically representation of…

Viability of Using Recycled Asphalt in Roadway Projects

By ahardingMay 7, 2021Leave a comment

Scope: Information from the Every Day Counts (EDC) project indicates that there is currently not enough information about re-cycles asphalt to determine how it fits into the program long term.  A…

Estimating the Economic Value of Historic Properties for Purposes of Mitigation under Section 106 of the National Historic Preservation Act

By ahardingMay 7, 2021Leave a comment

Problem Mitigation for the adverse effects to historic properties under Section 106 of the National Historic Preservation Act often entails an “economic” exercise of trying to estimate the value of the historic property…

Develop an Integrated Asset Plan for Utilities within the Right of Way.

By ahardingMay 7, 2021Leave a comment

Scope: Develop an integrated asset management plan for utilities and right of way. Develop guidelines for concurrent construction and maintenance activities; develop guidelines for cost sharing of degradation of pavement life;…

Emerging Worker Safety Concerns Associated with the Recycling of Fly Ash from Coal-Fired Power Plant in Concrete Mixtures

By ahardingMay 7, 2021Leave a comment

RESEARCH PROBLEM STATEMENT In recent years, coal-fired power plants are more frequently utilizing air pollution control technologies that result in fly ash with elevated concentrations of ammonia (referred to herein…

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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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