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

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationThe Project Area includes land within Alternative B2’s and B4’s limits of disturbance as well as properties thatwould be acquired for Alternatives B2 and B4, and associated building demolition. The acquisition of a propertywith either a known or previously undiscovered release of oil and/or hazardous materials may create apotential liability for RIAC. Commercial and industrial properties are considered more likely than residential orundeveloped properties to have had a release of oil and/or hazardous materials to the environment due togreater fuel storage needs, industrial processes, and various chemical use, storage, and disposal practices. Themagnitude and location of this type of impact was estimated by identifying the total number of propertyacquisitions (residential and commercial; mandatory and voluntary) and the associated structures that would bedemolished with a focus on commercial/industrial parcels. Refer to Section 5.1.4, Land Acquisition Assumptions,for a description of how parcels were identified for mandatory and voluntary acquisition for the No-Action andAlternatives B2 and B4.Other types of demolition include perimeter roads, taxiways, runways, and other facilities. Hangar No. 1 whichwill be demolished under Alternatives B2 and B4 contains asbestos. Buildings constructed prior to 1980 maypotentially contain ACM. Residential buildings constructed prior to 1978 and commercial or industrial buildingsconstructed prior to the mid-1990s may potentially contain lead-based paint building materials. Federal lawprohibits the widespread use of these materials, particularly in residential buildings. Due to less stringentregulation and generally larger building size, commercial and industrial buildings are considered more likely thanresidential buildings to contain these materials.Any oil or hazardous materials storage facilities that would be disturbed by the construction of Alternatives B2and B4 were identified, including aboveground storage tanks (ASTs) and USTs. If disturbed, these facilitieswould require assessment and removal, in accordance with state regulations. Refer to Tables 2-2 through 2-4 ofDEIS Hazardous Materials, Pollution Prevention and Solid Waste Technical Report for a complete list of ASTs, USTs,and miscellaneous oil and hazardous materials storage on-Airport. Additionally, off-Airport, potential sourcesof contaminated soil or groundwater within the Project Area were identified. Refer to Table 2-5 of DEISHazardous Materials, Pollution Prevention and Solid Waste Technical Report for a complete list of registered LUSTswithin the Project Area. The magnitude and location of this type of impact was identified by counting thenumber of registered ASTs, USTs, and LUSTs located within the limit of disturbance and potential acquiredproperties for Alternatives B2 and B4.Construction activities and associated equipment have the potential to generate new releases or spills as a resultof the storage and use of hazardous materials such as diesel fuel, gasoline, hydraulic oil, and lubricating oilsassociated with construction equipment.5.17.3.2 Indirect Impacts MethodologyAn indirect impact related to subsurface contamination or waste materials management would occur whenAlternative B2 or B4 has the potential to affect the ongoing remediation of existing contamination or wouldproduce additional sources of contamination or waste materials. An indirect impact related to subsurfacecontamination or waste management would exist if Alternative B2 or B4 has the potential to cause an impact atanother time or a location outside of the Project Area. Beneficial impacts and ongoing release monitoring andremediation are considered indirect impacts.Chapter 5 - Environmental Consequences 5-262 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH05_Environmental_Cons_JUL_2011.doc