WSDOT Plans.pdfMO
Washington State Noi thwest Region
15700 [Dayton Avenue Ncwth
MT RO. Box -33031 0
wo De�partmeiint of Trarisportation
Lyvwr� Peterson Seattle, WA 98133,9710
206.,440-4000
'Secretary of Fransportatiori Try: 1 -800-833,43388
www.wsdot,%Na.gov
February 19, 2014
RE(11x10EIVE,)
Robert Chave
Planning Manager FEB 1, 9
" I , ,
City of Edmonds (004\11US
121 5th Avenue North, ololff
oll'
Edmonds, WA. 98020
RE: XL4420 SR104 Safety Grant Mid -Block Pedestrian Crossing
SRI 04 Pedestrian / Bicycle Program between Milepost (MP) 24.5 and MP 25.6
20- Temporary Night Construction Hours Variance
Dear Mr. Chave:
The Washington State Department of Transportation (WSDOT) requests a 20 night
temporary noise variance for the project described below within the City of Edmonds.
The $1,637 check attached to this request covers the application fee. Also enclosed
with this request is a vicinity map and list of residents within 500 feet of the project
limits, WSDOT requests temporary relief from the requirements of Washington
Administrative Code (WAC) 173-60-040 and Edmonds City Code (ECC) 5.30 through
the variance processes allowed under ECC 5.30.120 and Edmonds City Development
Code (ECDC) 20.85.020. This would permit WSDOT to conduct construction
activities within the City of Edmonds between the hours of 10:00 P.M. to 7:00 A.M.
for 20 nonconsecutive nights between May and December 31, 2014.
Project Description
The Washington State Department of Transportation (WSDOT) and the City of
Edmonds currently proposes safety and operational improvements on SRI 04 between
mile post (MP) 24.5 and MP 25.6, between Dayton St. and Pine St. The project
proposes to construct a mid -block pedestrian and bicycle crossing, and make a
connection to the sidewalk west of SRI 04 to a pedestrian trail that leads to Edmonds
City Park at approximately MP 25.03. A High-intensity Activated Cross Walk
(HAWK) Signal System will be installed to enhance pedestrian safety. Additional
work anticipated includes two pedestrian ramps with detectable warning surfaces,
median traffic island with cut through, plastic crosswalk striping, raised pavement
markers, pedestrian view warning signs, and permanent signing. Please see attached
vicinity map
Robert Chave
February 19, 2014
Page 2
Construction Activities and Equipment
This project will involve paving and concrete work, digging and other utility
placement activities, signing, striping and traffic control equipment. The equipment
and the expected sound level at 50 feet we anticipate our contractor will require in
accomplishing this work includes, but not limited to the following:
Backhoe 79 dBA Paving Machines 80 dBA
Bulldozer 81 dBA Pickup Trucks 64 dBA
Cranes 82 dBA Street Sweepers 72 dBA
Dump Truck 79 dBA Traffic Control 71 dBA
Generators 71 dBA Truck Mounted Attenuators 64 dBA
Light Plants 72 dBA Vacuum Trucks 82 dBA
Sound levels from the stationary equipment above will reduce by 6 dBA every
doubling of distance from the equipment such as generators. Sound levels from the
mobile sources, such as the Street Sweepers will decrease by 3 dBA every doubling of
distance. It should be noted here that the traffic sounds from the SR104 highway,
though exempt, creates a background sound level adjacent to the highway at or near 73
dBA based on hourly annual daily traffic volumes. This sound will also drop by 3
dBA for every doubling of distance to the residents. (See Equipment Table for
reduction to these levels.)
Traffic Limitations
SR104 is a high volume highway and connects SR 99 and I-5 corridor thru the city of
Edmonds as well us shopping center, business and school routes. For worker and
public safety, traffic restrictions make it necessary to accomplish this work during
nighttime hours. On SR104 only the following lane closures are allowed:
Eastbound SR104 lane closures
Monday through Thursday (nights) 7:00 pm to 8`.00 am
Westbound SR104 lane closures
Monday through Thursday (nights) 7:00 pm to 9:00 am
Please see the attached project Traffic Control plan sheets.
Construction Noise Notice for Nighttime Operations
We propose the following measure to minimize construction noise to local residents:
A. The contractor shall use ambient sensitive backup warning devices. The
Contractor may use back-up observers in lieu of back-up warning devices for all
equipment except dump trucks in compliance with WAC Chapter 296-155-610
and 296-155-615. The Contractor shall use back-up observers and back-up
warning devices for dump trucks in compliance with WAC Chapter 296-155-610.
B. All trucks performing export haul shall have well maintained bed liners as
inspected and approved by the Engineer.
C. Stationary equipment, such as light plants, generators, and compressors, shall
utilize WSDOT approved noise mitigation shields, noise blankets, skirts, or other
means available as approved by the Engineer.
D. All truck tailgates shall be secured to prevent excessive noise from banging.
Robert Chave
February 19, 2014
Page 3
F. A copy of noise variance or exemption shall be kept on the project site at all
tunes.
F. The contractor shall notify residents, within 500 feet of the project, of nighttime
work activities at least 7 calendar days in advance of the proposed nighttime
construction work. Notifications shall include the following information at a
minimum:
• A description of the project
• Expected nighttime noise sources
® Start date and duration of the project, and
® Noise mitigation measures to be implemented
• A 24-hour WSDOT complaint number as well as a list of designated
contact persons provided for the purpose of forwarding complaints.
We anticipate that this project will begin construction by May 2014 and will complete
this work by the end of December 31, 2014. The construction Project Engineer in
charge of administering the contract will be:
John Chi, PE
9025 El Capitan Way
Everett, 98208
(425) 225-8741, Fax (425) 225-8798
Should construction activities, associated with this project, cause noise impacts, we
request your help resolving any complaint we may receive by notifying the Project
Engineer within 24 hours of occurrence.
If you have any questions please contact me at (206) 440-4544
Sincerely,
d
Larry Y: � .....
Magnoni
Acoustic and Air Quality and Specialist
LJM: ljm
Attachments: Vicinity Map
Traffic Control Plan Sheets
City Land Use Application
Cc: John Chi MS NB82-50
D. Crisman/ S. Esary MS NB82-54
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