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Industrial site development can result in substantial impacts to water quality and quantity. While permitting requirements may reduce impacts, they are limited in addressing long-term cumulative and operational impacts from the changes in land uses and cover. Many of these developments occur within watersheds containing impaired waters across the Southeast. Approximately 25,000 acres of industrial sites are developed or expanded each year in the 201-county Tennessee Valley Authority (TVA) power service region. TVA's mission is to promote sustainable economic development, energy production, and environmental stewardship.

This paper describes methodologies used to perform stormwater evaluations at a TVA facility, including hydrologic and water quality modeling. The hydrologic and water quality modeling was accomplished with the use of the LIFE™ model, developed by CH2M HILL to simulate Low Impact Development (LID). The LIFE™ model is a continuous-simulation, physically based model that accounts for processes that occur in bioretention facilities, bioswales, green roofs, and infiltration devices, as well as the effects of site fingerprinting and soil compaction. Tennessee Valley Authority is in the process of installing several demonstration projects using LID designs.

Document Type: Research Article


Publication date: 2005-01-01

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