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HomeMy WebLinkAboutHEX SLIDES PPT WSDOT I405 &SR 167 NV pdfNoise Variance for WSDOT I-405/SR 167 Direct Connect project LUA16-000770 Public Hearing Date Rohini Nair, Civil Engineer November 8, 2016 WSDOT’s I-405/SR 167 Direct Connector Interchange project includes building a new flyover ramp connecting SR 167 and I-405. The location is on SR 167 – from MP 24.5 to MP 27.3; on I-405 from MP 1.3 to MP 4.3; & on S 14th St & portions of Smithers, Morris, Whitworth, and Shattuck near S 14th St. Brief Description I-405/ SR 167 Direct Connect aka I-405 /SR167 Direct Connector Interchange project •Work is proposed for 845 non-consecutive nights over 36 months. •Construction Time Frame – November 22, 2016 to November 21, 2019. • Construction and hauling is proposed outside of code (RMC 4.4.030) allowed hours and days. Work is proposed Monday thru Sundays from 8:00 pm to 5:00 am. •City received 2 public comments and 2 parties of record requests . Brief Description Subsurface site investigations and survey - 100 nights I-405 Widening - 260 nights SR 167 Widening - 280 nights Direct Connect Bridge - 100 nights Final paving - 100 nights  Contingency nights for delays - 5 nights TOTAL 845 nights Brief Description of Work •Use of ambient sensitive back-up alarms for dump trucks. •Truck tailgate banging is prohibited. •Haul Trucks shall have “approved” bed liners. •Use of Noise Mitigation Shields on construction and stationary equipment. •Unwanted material is to be removed by sweeping. No scraping type of equipment shall be used during nighttime work. •Applicant shall provide a 24-hour complaint number and a list of designated contact person to register complaints or concerns. Mitigation Measures EDNA = Environmental Designation for Noise Abatement Residential uses are Class A EDNA Commercial uses are Class B EDNA Light Industrial are Class C EDNA The zoning along the construction corridor (12,615 feet) consists of Commercial Office (CO), Medium Industrial (IM), Commercial Downtown (CD), Commercial Arterial (CA), Residential du/ac (R-6, R-8, R-10), Residential Multi-Family (RMF). Construction & Hauling  Proposed project work hours – Mondays thru Sundays from 8:00 pm to 5:00 am  RMC 4-4-030 allowed work hours for non- single family construction Mondays thru Fridays - 7:00 am to 8:00 pm Saturdays - 9:00 am to 8:00 pm Sundays - No work Proposed Construction Equipment include: •Dump trucks •Pickup trucks •Generators •Portable lights •Paving machines •Grinders •Rollers •Air compressors •Saw cutters •Planning asphalt equipment •Drilling equipment 1.The applicant shall provide the City of Renton project manager with the phone number for after-hours noise complaints prior to commencement of construction. Any complaints within the Renton city limits shall be summarized and reported to the City’s project manager within 5 days of the complaint. 2.The applicant shall implement proposed mitigation measures to diminish or eliminate noise during construction. 3.The applicant shall notify the City of Renton project manager with the date and areas of expected night work prior to commencement of night work, a minimum of 24 hours in advance of the work. Staff recommends that the Noise Variance for the I-405/ SR 167 Direct Connect project along with the variance from RMC 4-4-030, File No. LUA 16-000770 VH be approved subject to the following conditions: Staff recommendation continued 4.Implementation of a noise monitoring program will be conducted nightly by the contractor and the results provided to the City’s project manager. Maximum noise level readings will be included in the noise monitoring program that will be conducted nightly and these results with the type of work being conducted during the noise level readings are to be provided to the City’s project manager. The applicant’s submitted project monitoring plan for nighttime construction noise in the event of a complaint should also be implemented. 5.The applicant shall provide temporary motel vouchers to affected residents for the nights of the proposed noise variance work when noise impacts cannot be reasonably mitigated (by ear plugs or white noise generators) to levels that enable the residents to reasonably sleep at their homes. Staff recommendations - continued 6.Work shall not be allowed on the following seven holidays: New Year’s Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, the day after Thanksgiving, and on December 25th, to prevent hardship to the residents. 7. Advance notification of the construction work should be provided to the residents two weeks ahead of the work by door hangers and/or mailings. Staff recommendations - continued 8. If complaints are received by WSDOT and/or the City regarding the construction work on Saturdays and Sundays near residential zones, the work on Saturdays and Sundays will be restricted to work that will not significantly impact local traffic, and the work will be restricted to noise levels that will not exceed the requirements of WAC 173-60-040. Staff recommendations - continued 9.For the work on City streets, traffic control plans are to be submitted by the contractor and approved by the City Transportation section prior to start of construction work. If any complaints are received from residents, the contractor along with WSDOT will work on measures to minimize the disruption.