cover letter.pdfAdff&,
0M Was1iington State
TWA Depav-tment of Munsportation
Lpi Peterson
Se(,retary of Tran
January 21, 2015
Robert Chave
Planning Manager
City of Edmonds
121 5th Avenue North,
Edmonds, WA. 98020
Northwest R egion '
15700 Dayton Avenue North
P.O. Box 3303 10
Seattle, VVA 98133.,97 10
206-440-4000
'ny: I -800-8'33-638B
www.ws(;lot.,Ara.gov
RE: 008639 SR104 Safety Grant Mid -Block Pedestrian Crossing
SR104 Pedestrian / Bicycle Program between Milepost (MP) 24.5 and MP 25.6
3 - Temporary Night Construction Hours Variance
Dear Mr. Chave:
The Washington State Department of Transportation (WSDOT) requests a 3 night
temporary noise variance for the project described below within the City of Edmonds.
The $250 application fee will be paid with a state credit card upon submission of this
application. 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) 173-60-04.0 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 roadway striping activities within the City of Edmonds between
the hours of 10:00 P.M. to 7:00 A.M. for 3 non-consecutive nights between January 23
and June 30, 2015.
Project Description
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
The Washington State Department of Transportation (WSDOT) applied for and
received a 20--nigbt temporary noise variance from in the City of Edmonds in May of
2014. Ten of the twenty nights of the previous variance were used in 2014. One last
item remains on this project but has been delayed because the signal poles and signal
controller were not delivered until the last week in December 201.4 and the roadway
Robert Chave
January 21, 2014
Page 2
striping cannot occur until the signal controller is installed. The previous variance
expired on December 31St, 2014 and WSDOT's contractor requires an additional 3
nights to complete the striping. One resident asked for ear plugs during one night of
the project last year and they were provided. No other noise complaints were received.
Construction Activities and Equipment
The remainder of the project will involve roadway 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:
Striping Grinder 76 dBA
Striping Truck 70 dBA
Street Sweeper 74 dBA
Sound levels from the equipment above will reduce by 6 dBA every doubling of
distance from the equipment. 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 5104 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
Construction Eloise 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. 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.
C. All ti Lick tailgates shall be secured to prevent excessive noise from banging.
D. A copy of noise variance or exemption shall be kept on the project site at all
times.
E. 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
Robert Chave
January 21, 2014
Page 3
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 January 23, 2015 and will
complete this work by the end of June 30, 2015 (dependent upon weather conditions).
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) 440-4643
Sincerely,
JLaughlin
Technical Manager, Acoustics, Air Quality and Energy Section
JDL: jdl
Attachments: Vicinity Map
Noise Mitigation Report
City Land Use Application
Adjacent Property Owners List
Cc: John Chi MS NB82-50
File