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MEMORANDUM
TO: CITY OF RENTON
FROM: EVAN MANN
SUBJECT:
J OB NO: 1938-001-016
EARLINGTON TOWNHOMES CONSTRUCTION MITIGATION DESCRIPTION
DATE: 06/12/2017
The proposed Earlington Townhomes project is a 60 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.