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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

Archived

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  2. Research Idea (TERI)

Procedures/agreements for managing the proposal and listing of new species under the Endangered Species Act

By ahardingMay 7, 2021Leave a comment

A survey of DOTs, FHWA offices, USFWS and federal land managing agencies for practices adopted to manage project review given the uncertainty associated with increasing listing of new species under…

Artificial ‘Cave’ Habitat on Bridges to Benefit Sensitive Bats

By ahardingMay 7, 2021Leave a comment

The benefits of bats to humans and the environment are well known. Some are principal pollinators and others consume large quantities of insects detrimental to agricultural crops and human health.…

What’s The Value of Airport Rail Stations?

By ahardingMay 7, 2021Leave a comment

There has been a great deal of interest in building airport stations on rail public transportation (heavy and light rail as well as intercity passenger rail). This study would look…

Evaluation of monitoring methodologies for Myotis sodalis and Myotis septentrionalis in conjunction with current USFWS protocols and transportation projects.

By ahardingMay 7, 2021Leave a comment

The Indiana bat (Myotis sodalis) is a federally listed endangered species and the Northern long-eared bat (Myotis septentrionalis) is a species proposed for Federal listing under the Endangered Species Act…

Using genomics to quantify Desert tortoise habitat fragmentation

By ahardingMay 7, 2021Leave a comment

Even in remote areas of California, roads are challenging for wildlife-they lead to car strikes, changes in microhabitat characteristics along road boundaries, and large-scale habitat fragmentation. We all suspect that…

Documenting Desert Tortoise use of interstate underpasses in alluvial fans and washes

By ahardingMay 7, 2021Leave a comment

Within the Colorado desert area of southern California, the Coachella Valley Multiple Species Habitat Conservation Plan (CVMSHCP) spans 1.1 million acres across the Coachella Valley. Bordered by Joshua Tree National…

(USGS Research Proposal) Permeability of Roads and Culverts to Movement of the San Bernardino Kangaroo Rat and other Small Mammal Species

By ahardingMay 7, 2021Leave a comment

Project Description: With culverts installed in numerous locations throughout southern California to allow for hydrological flow under roadways, they also provide the secondary function of vagile species connectivity to habitat…

(USGS Research Proposal) Underpass Evaluation and Enhancement for Small Vertebrates and Invertebrates

By ahardingMay 7, 2021Leave a comment

Background and Objectives Roads of different sizes, substrates, and traffic volumes have been shown to inhibit the movement of large mammals, small mammals, herpetofauna, and invertebrates (Brehme et al. 2013).…

Minimizing the Risk of Human and Bighorn Sheep Mortality Along Roadways in Southern California

By ahardingMay 7, 2021Leave a comment

In 1998, the Peninsular bighorn sheep (PBS) was federally listed as endangered throughout its distribution in the Peninsular Ranges of California. As identified by the PBS Recovery Plan (USFWS 2000),…

Best Management Practices for addressing the Migratory Bird Convention Act (Canada)/Migratory Bird Treaty Act (U.S.) and its effect on roadway and bridge construction and rehabilitation

By ahardingMay 7, 2021Leave a comment

Migratory birds establish nests on bridge structures and within roadway r-o-w’s. Restricted activity periods due to nesting restrict construction, maintenance and rehabilitation of roads and bridges leading to increased costs.…

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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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