T.F. Green Airport Improvement Program - FEIS Chapters - PVD

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationOn-site monitoring wells were sampled by Lincoln Environmental under the supervision of RIDEM and RIDOAin December 2004 and January 2005. The results of the groundwater analysis were submitted to RIDEM inMarch 2005, and reported low level concentrations of volatile and semi-volatile organic compounds in five ofthe six wells sampled. These concentrations were below applicable RIDEM GB groundwater standards. 258 Asixth well was found to contain separate phase product on two sampling events. Analysis of a sample from thiswell revealed the presence of polychlorinated biphenyls (PCBs), in addition to petroleum compounds.Surface water sampling conducted in the 1980s showed some PCB contamination in a pond near the landfill aswell as varying levels of petroleum and PCB contamination in sediments and groundwater. Subsequentsampling results indicated that contamination at the site has decreased, and groundwater sampling found thatthe groundwater at the site met RIDEM regulatory objectives. However, this investigation also identified a lightnon aqueous phase liquid (LNAPL) containing VOCs and PCBs still floating at the top of the groundwater table.There is no indication that the contaminants are migrating off-site, but the LNAPL would require furtherremediation and the landfill would have to be capped with clean fill before the site could be closed and delistedfrom the CERCLIS. 259Mays, Marshall & Meier, Co.The Mays, Marshall & Meier, Co. site is located at 450 Pavilion Avenue in Warwick, approximately 0.2 milesnorth of the Airport boundary, outside of the Airport property (Figure 4-34). The Mays, Marshall & Meier, Co.site is considered active by RIDEM and requires on-going remedial actions. This site is a potential source ofchlorinated groundwater and LNAPL. Based on field monitoring, it appears that groundwater flows in asoutheasterly direction from the site towards T.F. Green Airport.Leaking Underground Storage Tanks (LUSTs)Table 4-40 lists the seventeen LUSTs within the Project Area.Two active LUST sites (located off-Airport) are presently under investigation or are undergoing groundwatermonitoring as required by RIDEM: Mobil SS#01 and Spring Green Corporation (Former #1Tire) (Figure 4-34).Seven sites either will require or have required soil removal only during UST closure. The remaining eight sitesare inactive. Inactive sites are closed and UST releases have been remediated or attenuated. The BudgetRent-A-Car site located at T.F. Green Airport (at 2000 Airport Road) is inactive. In December 2003 letter, RIDEMindicated that contaminated soil and/or groundwater may still be present in or around the area known to havebeen impacted by a former LUST release.258 RIDEM classifies groundwater as GB for those groundwater resources which may not be suitable for public or private drinking water use without treatmentdue to known or presumed degradation (RIDEM Rules and Regulations for Groundwater Quality, March 2004).259 Site Investigation Report, Former Truk-Away Landfill, Warwick Industrial Drive, Warwick, Rhode Island. EA Engineering, Science, and Technology, Inc.September 2008.Chapter 4 – Affected Environment 4-79 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH04_Affected_Env_JUL_2011.doc