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

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationTable 3-9Level 5 Build Alternatives Elements Subject to Environmental Consequences AnalysisAlternative B1 Alternative B2 Alternative B4Program Element (Runway 5-23 9,350 feet) (Runway 5-23 8,700 feet) (Runway 5-23 8,700 feet)Safety Enhancement Elements(Completed by the end of 2015)Enhance Runway 16-34 Runway SafetyAreas, including:X X XRealign Off-Airport RoadwaysPartially Relocated AirportRoad at Tennessee AvenuePartially Relocated AirportRoad at Tennessee AvenuePartially Relocated Airport Roadat Hasbrouck AvenueRelocate Delivery Drive X X XRelocate Taxiway C X X XDemolish Hangar No. 1 X X XEfficiency Enhancement Elements(Completed by 2020 - exceptions noted)Extend Runway 5-23, including:Extend to 8,700 feetExtend to 9,350 feet Extend to 8,700 feet (Completed by the end of 2015)Realign Off-Airport Roadways 1 Fully Relocated Fully Relocated Realigned Main AvenueAirport Road Airport Road (Completed by the end of 2015)Construct New Integrated Cargo Facility (Site 3) Site 3 Site 3 Split Facility at Site 3Expand Passenger Terminal X X XConstruct New Ground Support EquipmentX X XFacilityConstruct New Belly Cargo Facility X X XConstruct Fuel Farm X X XExpand Automobile Parking Facilities X X XReconfigure Terminal Access Roadways X X XNote: Alternatives B3 North and South were dismissed prior to the environmental analysis in Level 5 Step 3 because they would have substantially similar impacts toAlternatives B2 and B4 but not meet the Purpose and Need as fully as the alternatives with longer Runway 5-23 extensions.X Common program element.1 Runway 16-34 and Runway 5-23 would impact Airport Road differently: Runway 16-34 enhancements would result in a partial relocation of the western portion ofAirport Road north of the Runway 16 End in 2015, whereas Runway 5-23 extension for Alternatives B1 and B2 would result in a full relocation of Airport Roadnorth of both Runway ends, connecting from Squantum Drive to Route 37 in 2020. Alternative B4 would not require a full relocation of Airport Road.Wetland losses associated with Alternative B1 are substantially greater than for Alternatives B2 and B4.Implementing compensatory wetland mitigation for Alternative B1 would be impracticable because it would bedifficult to acquire the land area necessary to achieve USACE recommended mitigation acreage requirements(47.9 acres for Alternative B1 versus 18.5 acres or 15.1 acres for Alternative B2 or B4, respectively), and becauseof the high land acquisition, construction, and monitoring costs. After investigating wetland mitigationopportunities in the vicinity of the Airport it was found that an assemblage of ten or more mitigation siteswould be needed to compensate for wetlands losses associated with Alternative B2 or B4. A compensatorywetland mitigation program for Alternative B1 could require 25 or more sites and several of these sites would ofnecessity be located outside of the project watershed. The analysis further found that the availability ofappropriate mitigation sites in Rhode Island was also limited. This would greatly increase the complexity andcosts of the wetland mitigation program.Chapter 3 – Alternatives Analysis 3-32 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH03_Alternatives_JUL_2011.doc