12th Ave between W 131st - W 133rd St, New York, NY 10027

Hamilton Heights

VCP MGP VOCs CVOCs "Vapor Intrusion" brownfield

NYC Transit Authority
Site Description[1] 
The site is located on portions of two blocks bounded by West 131st Street, West 133rd Street, Broadway, and 12th Avenue in upper Manhattan. The surrounding area is highly urbanized. The site is the location of two former gas holders, the last of which was closed in 1962. The Site Characterization Report has shown that no MGP related contamination is located on the site. The Department determined that no further action was necessary in a letter dated March 18, 2008. Contaminated soil vapor was found under one of the buildings on the site, but it was determined that the contamination was not MGP-related and issue was referred to the regional spills division.

Site Environmental Assessment
The site characterization report has shown that no MGP-related contamination is found on the site. Therefore the Department has determined that no further action is necessary on the site.

Site Health Assessment
No evidence of manufactured gas plant waste material was found at the site, therefore, no exposure to manufactured gas plant waste is expected. However, petroleum related contaminants and tetrachloroethene and trichloroethene are present in soil vapor. The potential exists for exposure to these contaminants through the soil vapor intrusion pathway in current and future buildings.

admin, Debra Hall



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