Protecting Oregon's Environment
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 Oregon Department of Environmental Quality

Land Quality

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Union Pacific Railyard Cleanup, Eugene - Soil Vapor Extraction Pilot Test

In 2008, UPRR conducted a Soil Vapor Extraction (SVE) pilot study to evaluate how vapors move in soil beneath the Trainsong neighborhood, and whether SVE could be used effectively to lower soil gas concentrations. The SVE pilot study indicated that clay-rich soils beneath the study area greatly reduce the movement of air (and any possible contaminants in the air). Sand and gravel zones that lay deeper beneath the clay, however, can transmit vapor relatively easily, as these soil types are more permeable. While SVE may be effective to control vapor migration in the sand and gravel zone, DEQ will not require UPRR to implement SVE to lower soil gas concentration at this time, because soil gas levels have dropped during the past several years and because vapor barriers have been installed in potentially impacted homes.

• Soil Vapor Extraction Pilot Test Report pdf
 

For more information about DEQ's Land Quality programs, visit the DEQ contact page.

For more information about DEQ's Land Quality Division call 503-229-5696 .

Oregon Department of Environmental Quality
Headquarters: 811 SW Sixth Ave., Portland, OR 97204-1390
Phone: 503-229-5696 or toll free in Oregon 1-800-452-4011
Oregon Telecommunications Relay Service: 1-800-735-2900  FAX: 503-229-6124

The Oregon Department of Environmental Quality is a regulatory agency authorized to protect Oregon's environment by
the State of Oregon and the Environmental Protection Agency.

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