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HomeMy WebLinkAbout9a.Construction Mitigation DescriptionConstruction Mitigation Description Greenleaf II Construction is expected to start April 2016 and with homebuilding finished August 2016, though this is dependent on a steady sales rate and market conditions. Construction hours will follow the City of Renton Code limiting construction activities to between 7am and 8pm Monday through Friday, and 9am to 8pm on Saturdays with no work permitted Sundays. No special hours are proposed for construction or hauling. Hauling and transportation will be on SE 188th St and onto lots 32 – 34 of the Greenleaf plat. No hauling will occur on 108th. Best Management Practices from the Washington State DOE Manual will be used to control dust, traffic and transportation impacts, erosion, mud, noise and other impacts. During construction, the contractor will follow an approved temporary erosion and sedimentation control plan meeting City standards. Typical measures, which may be employed, include the use of silt fences, straw bales, and temporary storm drainage features. Hydroseeding exposed soils and cleared areas after construction will also reduce the potential for erosion. Some heavy machinery exhaust and dust particulates generated primarily by construction equipment will be produced during the construction phase of this project. The amount of emissions to the air will be minimal and will occur during the actual construction of the development. After construction any emissions would be that of a typical residential area. All construction equipment will be in proper working order and regulated for emissions by the manufacturer and local emission laws. Vehicles entering and leaving the site will also be regulated for emissions by state and local emission laws. During construction the site will be watered as necessary to keep any dust from impacting surrounding air quality. Short-term noise impacts would result from the use of construction equipment during site development. Construction would occur during permitted construction hours and always in compliance with the City of Renton noise regulations. Equipment will not be allowed to idle for continuous periods of time, which will help to mitigate the impacts of potential construction noise. Long-term impacts would be those associated with the increase in vehicular traffic from future home owners and typical residential noise. A flagger will be used as needed along SE 188th street. A type III barricade will prevent any access onto 108th AVE SE. Exhibit attached.