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The Center for Environmental Excellence by AASHTO welcomes your comments, suggestions and recommendations for best practices, sharing new research and reports, and improving the Center's website.

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Practitioner's Handbooks

Practical advice on a range of environmental issues that arise during the planning, development, and operation of transportation projects. View Handbooks >
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Recent Internet postings of interest to transportation and environmental professionals. View News >

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AASHTO (American Association of State Highway and Transportation Officials)
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