Design Guidance for Vapor Intrusion Mitigation Clause Samples

Design Guidance for Vapor Intrusion Mitigation. Much of the design guidance for vapor intrusion mitigation has been developed for the radon control industry. The intrusion of radon gas into buildings occurs by similar processes as the VOC vapor intrusion process (see Section 5.1.1), with the exception that radon gas is naturally occurring in soil gas at some properties. Therefore, measures designed to mitigate radon gas intrusion into buildings can be considered for mitigating VOC vapor intrusion. Although not intended to be a complete list, design guidance for VOC vapor intrusion mitigation may be found in the following sources, most of which are based on radon control: • Radon Prevention in the Design and Construction of Schools and Other Large Buildings, Third Printing with Addendum, U.S. EPA, Office of Research and Development, EPA/625/R-92/016, June 1994. • Radon-Resistant Construction Techniques for New Residential Construction, Technical Guidance, U.S. EPA, Office of Research and Development, EPA/625/2-91/032, February 1991. . • Radon Reduction Techniques for Existing Detached Houses, Technical Guidance, (Third Edition) for Active Soil Depressurization Systems, U.S. EPA, Office of Research and Development, EPA/625/R-93/011, October 1993. • Radon Mitigation Standards, U.S. EPA, Air and Radiation, EPA 402-R-93-078, October 1993 (Revised April 1994). • Guidance for the Design, Installation, and Operation of Sub-Slab Depressurization Systems, ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ and ▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇, Massachusetts Department of Environmental Protection, Northeast Regional Office, December 1995. The design guidance listed above may be considered in the selection and design of vapor intrusion mitigation systems, but is not mandatory. Other design criteria and guidance may be appropriate. Potential vapor intrusion mitigation alternatives are described in the following sections.
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