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

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationTable 6-16Alternative B4: Summary of Construction Period Mitigation MeasuresMitigation MeasuresNoise• All equipment powered by an internal combustion engine would utilize a properly maintained muffler.• Conduct truck loading, unloading, and hauling so that noise is kept to a minimum.• Route constructi on equipment and vehicles i n areas that would cause the least disturbance to nearby receptors where possi ble.• Fit air-powered equipment with pneumatic exhaust sil encers.• Stati onary equipment powered by an internal combustion engine would not be wi thin 150 feet of noise-sensitive sites without portable noise barri ersplaced between the equipment and the residences. Portable noise barriers most li kely would be constructed of plywood or tongue-and-groove boardsand would have a sound absorbing treatment on the surface facing the equipment.• If appropriate, temporary noise barrier wall s may be constructed to protect noise-sensitive areas from construction noise.Surface Transportation• Maintain pedestri an access through work zone as appropriate.• Maintain vehicle and bicycl e access as appropri ate, provide temporary traffi c detours only when needed.• Coordinate with the state and appropriate officials throughout design and construction phase. Coordinate with abutters as needed.Air Quality• Limit idling diesel-powered construction vehicles and equipment engines to no more than five consecutive minutes wi thin any 60-minute period.• Construction equipment will be operated with Tier 3 controls where feasible and appli cable.• Encourage Contractors to substi tute low- and zero-emitting constructi on equipment whenever possible.• Implement a construction employee shuttle service, ri deshare program, and/or on-site food service to reduce vehicle tri ps.• Use electrical drops in place of temporary electri cal generators wherever possible.Other construction-related air quali ty mitigation measures aimed at reducing the occurrence and potential impacts from “fugitive” dust could also bei mplemented as needed. These measures could incl ude, but are not limited to, the following:• Apply non-toxic soil stabilizers to all inactive construction areas including areas with disturbed soils and stockpil es of raw materi als.• Stabilize on-si te truck haul routes and staging areas with dust-prevention materials.• Reduce truck speeds on haul routes to minimize dust re-entrainment.• Remove mud and dirt from haul truck wheels and cover truck bodies before leaving the construction si te(s).• Permanently cover all ground surfaces with vegetation or impervious materials as soon as practi cable.• Post a publicly visible sign with the contact information for reporti ng dust complaints.Water Quality• Develop and implement a construction stormwater pollution and prevention plan (SWPPP), including installation of temporary BMPs andimplementation of erosion and sediment controls, in accordance wi th NPDES and RIDEM standards/permits.• Ensure proper timing of construction to minimize the time that an area is left exposed, temporary stabilizati on of exposed areas using protectivecovers, and perimeter controls such as sil t fences and straw bales to capture sediment before it leaves the si te.• Perform regular monitoring to ensure that the controls are effecti ve.• Install spill control procedures at desi gnated temporary fueling locations and any temporary sanitary facilities during construction• Waste materials would be managed properl y.• Address any contaminated soil or groundwater encountered during construction in accordance with all applicable regulations.• If dewatering activities were necessary, all applicable regulations will be complied with and all permits will be obtained.Wetlands and Waterways• Implement erosion and sedimentation control measures according to the construction SWPPP.• Appropriate constructi on measures such as the use of swamp mats or would be used to avoid or minimize the construction effects on wetl ands.Hazardous Materials and Solid Waste• Implement measures to protect workers and the environment, such as a speci al management procedures for any hazardous, contaminated, orspecial wastes generated during constructi on.• Prepare a site-specific Health and Safety Plan, if required.1 The air quality impact assessment fi ndings, presented in Chapter 5, Environmental Consequences, show that the construction of Alternati ve B4would not have a signifi cant effect on air quality conditions locally, state-wide, or regionally and, therefore, specific air quality avoidance, minimization or mitigationmeasures are not required under NEPA or the General Conformity Rule. These measures could be included to help reduce construction-related emissionsassociated with construction vehicles and equipment during the temporary construction peri od.Chapter 6 – Mitigation 6-40 July 2011\\Mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH06_Mitigation_JUL_2011.doc