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

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) Evaluation5.17.2.1 Finding: No Significant Hazardous Materials, Pollution Prevention, and Solid Waste ImpactsAs presented in Table 5-6, FAA Order 1050.1E defines a significant impact for hazardous materials, pollutionprevention, and solid waste as one where an action involves a property on or eligible for the National Priority List(NPL). In other cases, an unresolved issue may be considered significant. Uncontaminated priorities within a NPLsite’s boundary do not always trigger this significant threshold. As documented in Chapter 4, Affected Environment,there are no sites in the Project Area, Study Area, or City of Warwick that are listed on the NPL. Additionally,there are no unresolved issues regarding hazardous materials. Therefore there are no significant impacts in thecategory of Hazardous Materials, Pollution Prevention, and Solid Waste, as a result of Alternatives B2 or B4.5.17.2.2 Additional AnalysesIn accordance with federal and state regulations, additional analyses related to hazardous materials, pollutionprevention, and solid waste considered sanitary and solid waste management at T.F. Green Airport; the storageand handling of petroleum products at T.F. Green Airport, pollution prevention measures at T.F. Green Airport,and potential sources of contaminated soil or groundwater within the Project Area.5.17.3 MethodologyImpacts were identified for Alternatives B2 and B4 based on the Baseline Condition described in Chapter 4,Affected Environment.5.17.3.1 Direct Impacts MethodologyA direct impact is an immediate consequence to the environment or construction program as a result of theimplementation of Alternatives B2 and B4. Direct impacts would include encountering existing contamination,acquiring a contaminated property, or generating regulated materials during building demolition, storage tankremovals, or site preparation. The following are considered direct impacts:• Encountering or Creating Contaminated Soils and Groundwater• Property Acquisition• Generating Demolition Debris• Underground Storage Tank (UST) Removal• New ReleasesContaminated soils and/or groundwater may be encountered during excavation work. Contaminatedgroundwater could also be encountered if excavation dewatering is required during construction. Potentialcontaminants that may be encountered during construction include petroleum hydrocarbons, polycyclicaromatic hydrocarbons, volatile organic compounds, polychlorinated biphenyls, pesticides, and metals. Themagnitude and location of this type of impact was identified by determining which areas of existing or potentialcontamination are within the limit of disturbance for Alternatives B2 and B4. A review of federal, state, andproprietary environmental databases was conducted to identify properties in the vicinity of the Project Areathat were known to be contaminated, including the NPL and RIDEM databases. Refer to Table 2-1 of DEISHazardous Materials, Pollution Prevention and Solid Waste Technical Report for a complete list of the databases thatwere reviewed as part of the FEIS. It is also possible that a previously undiscovered release could beencountered during construction of Alternatives B2 and B4, which would be identified and addressed.Chapter 5 - Environmental Consequences 5-261 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH05_Environmental_Cons_JUL_2011.doc