There is some other information about the use of Direct Push tools for detection and measurement of free product available. Some sources you may check are:

• Environmental Protection Article published September 2002.
• Expedited Site Assessment Tools for Underground Storage Tank Sites. EPA 510-B-97-001 US EPA Office of Underground Storage Tanks. Contact U.S. Gov. Printing Office at 202-512-1800 to request a copy.  Website for the EPAs Office of Underground Storage Tanks (OUST) http://www.epa.gov/swerust1/directiv/index.htm.
• Recommended Guidelines for Multi-Level Sampling of Soil and Groundwater in Conducting Expedited Site Investigations at UST Sites in Connecticut.  Contact: LUST Trust Fund Program, Connecticut DEP, 79 Elm St, Hartford CT. 06106.
• Seminars: Monitored Natural Attenuation for Groundwater. EPA/625/K-98/001 May be able to obtain copies of this from Gov. Printing Office or NTIS at 703-605-6000.
• For Recent EPA Bioremediation Publications: http://www.epa.gov/ORD/WebPubs/biorem/.
• To request to be on EPAs bioremediation mailing list call 513-569-7562.
• Website for EPAs Kerr Lab in Ada, Oklahoma involved in MNA and bioremediation research: http://www.epa.gov/ada/kerrlab.html.

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