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HomeMy WebLinkAboutEx20_Construction_Mitigation_Description Civil Engineering • Land Surveying • Project Management • Public Works • Land Planning • Landscape Architecture Phone 253.838.6113 800.345-5694 Fax 253.838.7104 MEMORANDUM TO: CITY OF RENTON FROM: EVAN MANN SUBJECT: EARLINGTON TOWNHOMES CONSTRUCTION MITIGATION DESCRIPTION J OB NO: DATE: 03/17/2017 1938-001-016 The proposed Earlington Townhomes project is a 62 unit townhome community located at the northwest corner of S 132nd St and Renton Ave S in the Bryn Mawr-Skyway neighborhood. Stormwater will be detained in a proposed stormwater detention and water quality vault located in the southeast corner of the site. Water quality will be provided by filter located in the combined detention/water quality vault. The existing is currently an abandoned nursery with multiple greenhouses, outbuildings, a retail building, and a caretaker’s residence. The project is approximately scheduled to begin construction in May, 2018 and end in May, 2019 being a build-out of approximately 1 year. Construction hours of operation will follow the City of Renton Municipal Code Section 4-4- 030.C.3.b. This limits construction activities to between 7:00am and 8:00pm Monday through Friday, and 9:00am to 8:00pm on Saturdays. No work is permitted on Sundays. No special hours are proposed for construction or hauling for this project. Construction traffic will travel southeast on Renton Ave S for 0.5 miles. Then south on Rainier Ave S for 1 mile to the interchange of Washington SR 167 and Interstate 405. Construction routes will vary depending on where the workers are coming from and where they are going. During clearing and grading, more specific haul routes will be established. Best Management Practices from the Washington State Department of Ecology Manual will be used to control dust, traffic and transportation impacts, erosion, mud, noise and other noxious characteristics. BMP’s that will be used on site include, but are not limited to: BMP C105: Stabilized Construction Entrance BMP C120: Temporary and Permanent Seeding BMP C123: Plastic Covering BMP C140: Dust Control BMP C151: Concrete Handling BMP C200: Interceptor Dike and Swale BMP C220: Storm Drain Inlet Protection BMP C240: Sediment Trap 132nd Street is classified as a Collector Arterial and Renton Avenue is classified as a Minor Arterial. There is an existing stop sign at the intersection of Renton Ave and 132nd Street.