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

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) Evaluation5.11.4 Impact AssessmentThis section provides a summary of the evaluation of water quality and hydrologic impacts for Alternatives B2and B4, and compares them to the No-Action Alternative. Table 5-110 presents a summary of these impacts andFigures 5-42 and 5-43 show the future drainage areas and outfalls.As shown in Table 5-110, various elements of Alternatives B2 and B4 could, in the absence of stormwater BMPs,increase pollutant loading to receiving waters (Buckeye Brook, Spring Green Pond, Warwick Pond, TuscatucketBrook, or Callahan Brook). New public roads and parking lots, including the Fully and Partially Relocated AirportRoad and the Integrated Cargo Facility Site, could increase pollutant loading of TSS, oil, and metals to receivingwaters. The relocated fuel farm and expanded terminal would include spill prevention control measures toprevent the contamination of groundwater or surface water with fuel products. The new fueling location wouldnot pose a new threat to water quality, particularly because fuel farms and terminals already exist at the Airport,and spill control measures will be implemented with the new facility. Other elements such as the passengerterminal and parking garage would have a negligible effect on water quality. Runoff from the terminal roof doesnot contain sediment and contaminants that are found on roads. The parking garage would be built on an existingsurface lot, increasing the number of parking spaces without increasing the parking footprint. The new runwayand taxiway areas would have a minor impact on water quality as these uses of pavement do not typicallycontribute significant amounts of contaminants or bacteria to runoff when compared to roadway runoff.Table 5-110No-Action and Alternatives B2 and B4: Program Elements by Drainage AreaDrainageArea No-Action Alternative Alternative B2 Alternative B4BuckeyeBrook NorthRemove existing off-airport houses EMAS for Runway 23, Turf RSAs ,through the VLAP. New glycol blending taxiways, new approach lighting,and treatment facilities would improve Integrated Cargo Facility, Partiallywater quality. 1 Relocated Airport Road, Fully RelocatedAirport RoadRemoved: existing Airport Road, housesWarwick Pond New taxiways New taxiwaysBuckeye New taxiwaysBrook SouthTuscatucketBrookCallahan BrookRemove existing off-airport housesthrough the Voluntary Land AcquisitionProgramRemove existing off-airport housesthrough the Voluntary Land AcquisitionProgramSource: VHB, Inc.EMAS Engineered Material Arresting SystemRSA Runway Safety Area1 New deicer management system to come on–line before 2015.EMAS for Runway 34, taxiways, terminalgates, relocated Perimeter Road, parking,fuel farmRemoved: runway, taxiwaysEMAS for Runway 5, runways, taxiways,parking, relocated Perimeter RoadRemoved: housesNew approach lightingRemoved: housesEMAS for Runway 16, runways, taxiways,new approach lighting, Integrated CargoFacility, Partially Relocated Airport RoadRemoved: part of existing Airport Road,housesEMAS for Runway 34, taxiways, terminalgates, relocated Perimeter Road, parking,fuel farmRemoved: taxiwaysEMAS for Runway 5, runways, taxiways,parking, relocated Perimeter RoadRemoved: part of existing Main Avenue,housesNew approach lighting,Realigned Main AvenueRemoved: housesChapter 5 - Environmental Consequences 5-212 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH05_Environmental_Cons_JUL_2011.doc