The U.S. Environmental Protection Agency (EPA) recently issued a report, Our Built and Natural Environments: A Technical Review of the Interactions among Land Use, Transportation, and Environmental Quality, that examines how certain kinds of land use and transportation strategies – where and how communities are built – may reduce the environmental and human health impacts of development.
“This report will be useful for communities across the country looking to make smart development decisions,” said EPA Acting Administrator Bob Perciasepe in a prepared statement. “Whether it’s housing, transportation, or environmental issues, this report can help communities protect public health and the environment by avoiding harmful development strategies.”
The report, the second edition of a document published in 2001, summarizes trends in land use, buildings, travel behavior, population growth, and the expansion of developed land. It then discusses the environmental consequences of these trends, such as habitat loss, degradation of water resources and air quality, urban heat islands, greenhouse gas emissions and global climate change, and other health and safety effects. Environmental impacts linked to building and development patterns include:
- At least 850,000 acres of lakes, reservoirs, and ponds and 50,000 miles of rivers and streams are thought to be impaired by stormwater runoff.
- Although technology has reduced per-car vehicle emissions, an approximate 250-percent increase in vehicle miles travelled since 1970 has offset potential gains.
- Transportation is responsible for 27 percent of U.S. greenhouse gas emissions; residential and commercial buildings contribute 18 percent and 17 percent, respectively.
- The report concludes by describing ways to reduce such effects. Strategies include safeguarding sensitive areas; focusing development in built-up areas and around existing transit stations; building compact; mixed-use developments; designing streets that are safe for all users, including walkers and bikers; and using green building techniques.
To access a copy of the report, please visit:
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