American Society of Civil Engineers

A Preliminary Assessment of the Cost, Maintenance Requirements and Performance of Sand Filters

by Michael E. Barrett, P.E., (Center for Research in Water Resources, PRC #119, University of Texas, Austin, TX 78712) and Steve Borroum, P.E., (California Department of Transportation, Environmental Program, P.O. Box 942874, Sacramento CA 94274-0001)
Section: Stormwater and Best Management Practices, pp. 1-10, (doi:

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Document type: Conference Proceeding Paper
Part of: Bridging the Gap: Meeting the World’s Water and Environmental Resources Challenges
Abstract: Sand filters are a common stormwater treatment technology in a few areas of the country, but have had limited application in California and other areas. In an effort to better understand the cost, maintenance requirements, and pollutant removal ability of sand filters, the California Department of Transportation constructed five Austin style and one Delaware style sand filters in the Los Angeles and San Diego metropolitan areas. The sand filters were constructed as retrofit projects for maintenance yards, and park and rides. Each of these facilities includes stormwater monitoring equipment for collection of flow weighted composite samples. In addition, detailed records are being compiled of the design elements, construction costs, and type and amount of maintenance required at each of the facilities. This comprehensive assessment facilitates a thorough evaluation of the cost/benefit ratio, and technical feasibility for widespread implementation as part of Caltrans’ stormwater management program.

ASCE Subject Headings:
Performance characteristics
Sand filters