Engineering Solutions to Vapor Intrusion at Brownfield Sites:
Using case-studies of two Brownfield sites in New Jersey, ENVIRON will present in detail two different design approaches for vapor mitigation systems (VMS): sub-slab depressurization and sub-slab ventilation. The most effective design approach depends on site-specific conditions, applicable regulatory framework and applicable technical guidance. Specifically, USEPA and various state agencies such as MADEP, PADEP, NYSDEC and most recently NJDEP, have developed vapor intrusion guidance documents. Although there are many similarities in the guidance documents, the differences can be considerable. Therefore, this presentation will provide a comparison of the primary differences in the documents including an analysis of the different critical chemical of concern screening criteria, matrix specific screening approaches, soil gas sampling, and indoor air sampling techniques. As an example, one guidance document allows......
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Approximate Word Count: 442
Approximate Pages: 2 (260 words per double-spaced page) |