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HomeMy WebLinkAboutCM_Construction_Mitigation_Narrative_170519_v1 - Copy.pdfPage 1 of 1 “U.S. BANK EXPANSION” CONSTRUCTION MITIGATION NARRATIVE (May 19, 2017) A. Proposed Construction Dates (Beginning and Ending Dates): Construction is proposed to begin on July 10, 2017 and end on September 29, 2017. B. Proposed Hours and Days of Construction Operation: Work on the project could take place from 6:00 AM to 10:00, seven days a week. Note that because the nearest residence is more than 800 feet away from the proposed addition (to the east across the Valley Freeway from the proposed addition), the limitations on construction days and hours set forth in Renton Municipal Code Section 4-4-030C.3.b for construction activities conducted in residential areas or within three hundred feet (300') of residential areas are not applicable to the subject project. C. Proposed Hauling/Transportation Routes: Hauling of materials between the project site and the Valley Freeway (SR 167) is anticipated via the SR 167 entrance/exiting ramps at SW 41st and SW 43rd Streets and via East Valley Highway south of the project site. Hauling of materials between the project site and I-405 is anticipated via the I-405 entrance/exiting ramps at West Valley Road and via East Valley Road (north of the project site), SW 16th Street, Oakesdale Avenue SW, SW Grady Way, and West Valley Highway. D. Measures to Be Implemented to Minimize Dust, Traffic and Transportation Impacts, Erosion, Mud, Noise and Other Noxious Characteristics: Very little site work will be involved with the proposed project because of (1) the small size of the project site area that will be disturbed (only ±6,218 square feet), the small size of the proposed building addition (only ±2,673 square feet, which is comparable to the square-footage of a medium-size single-family rambler residence), (3) the very flat project site area, (4) the fact that less than 250 cubic yards of excavation, filling, and grading is expected, and (5) the fact that most of the project site area is within an existing concrete-surfaced parking lot. These factors by themselves will minimize dust, traffic and transportation impacts, erosion, mud, noise and other noxious characteristics. Further, to reduce or control erosion, the project design contemplates installation of a sediment trap, catch basin filters at existing parking lot catch basins, and straw wattles across an existing driveway to the project site area, all as shown on the project’s Temporary Erosion and Sedimentation (TESC) and Drainage Plan. E. Any Special Hours Proposed for Construction or Hauling (i.e. weekends, late nights) See Section B (Proposed Hours and Days of Construction Operation), above. F. Preliminary Traffic Control Plan: Access into and out of the subject property to and from the project site is appropriate at and is planned at both of the subject parcel’s two direct driveway connections with East Valley Road.