15-100432-ADA�kCITY OF
Federal Way
February 2, 2015
Tony Doucette
City of Federal Way - Public Works - SWM
33325 81h Avenue South
Federal Way, WA 95003
CITY HALL FILE
33325 8th Avenue South
Federal Way, WA 98003-6325
(253) 835-7000
www. cityoffederalway.. com
RE: File 415-100432-00-AD; STEEL LAKE MAINTENANCE YARD - SALT BRINE OPERATION
(Site Plan Revision) 31114 281h Avenue South, Federal Way
Dear Tony,
The Community Development Department has received your request to modify the approved site plan of
the November 14, 2014, Use Process 1 decision (14-105709-00-UP), which involved site preparation and
installation of a salt brine control building, hopper, and salt brine storage tank at the Steel Lake
Maintenance Yard, located at 31114 28"' Ave South. The proposed modification includes the extension of
the fill limits approximately 50 feet to the fence line and adds a 4-foot ecology block retaining wall along
the eastern property line. The existing security fence, which is situated on the property line, will be
secured to the new retaining wall. A perforated storage/drain pipe is shown in the plan to allow collection
and dispersion of runoff entering the lower yard from paved areas upslope in the yard. The footprint of
the gravel area is the same as originally proposed, and the remainder of the fill area will be seeded with
grass to remain pervious. Since the November 14, 2014, approval of the original Use Process decision, the
City has assumed ownership of the two sewer mains on the parcel up to, but not including, the southern
man hole as outlined on the modified site plan. The facilities have been conveyed and the easements
vacated by Lakehaven Utility District.
CODE REQUIREMENT
Pursuant to Federal Way Revised Code (FWRC) 19.120.120(6) rockeries and retaining walls shall be set
back a minimum of 3 feet from adjacent public rights -of -way. Given this requirement, you are requesting
a modification to the setback requirements for rockeries and retaining walls.
In accordance with FWRC 19.120.050, modifications to the clearing, grading, and tree and vegetation
code can be administratively approved by the Director of Community Development. Your site plan
modification request is hereby approved based on the following conclusions:
Interstate 5 is approximately 130 feet east of the proposed wall location, but existing native
vegetation is both mature and dense preventing the wall from being visible from the freeway.
Therefore, the proposed retaining wall along the east property line will result in the same or less
impacts than meeting the standards per FWRC 19.120.050(1)(b).
As depicted in the submitted materials, the retaining wall will be approximately 425 feet from the
public right-of-way at 28t1i Ave S and is not visible from the road due to the distance from the
road and change in elevation. Further, the wall will be screened from the properties to the north
and south by the mature and dense vegetation.
Mr. Doucette
February 2, 2015
Page 2
Your Use Process I approval and site plan modification request are hereby approved as depicted on the
12/12/2014 drawing.
If you have any questions regarding this letter, please contact Kalon Thomas, Planning Intern, at 253-835-
2622, or kalon.thomas@cityoffederalway.com.
Sincerely,
Isaac Conlen, Planning Manager
for Larry Frazier, Interim Director
enc: Approved Site Plan
C. Kalon Thomas, Planning Intern
15-100432 Doe LD.67859
14F-- jr,- l oo43Z
Kalon Thomas
From: Tony Doucette
Sent: Thursday, January 15, 2015 3:18 PM
To: Isaac Conlen; Kalon Thomas
Subject: Site Plan Revision Permit #14-105709-00-UP; Steel Lake Maintenance Yard - Salt Brine
Operation
Attachments: LowerYardGrading.pdf, MiddleDriveway.JPG; North Driveway.J PG; South Driveway.J PG
Follow Up Flag: Follow up
Flag Status: Flagged
Isaac and Kalon,
Public Works plans a revision to the subject Permit, approved November 14, 2014. The revision pertains to grading at
the lower yard as described in this email. The original design was to fill a portion of the lower yard and tie in to existing
grades with 3:1 fill slopes at the edge of fill. The design modification extends the fill limits approximately 50 feet to the
fence line and adds a 4-ft ecology block retaining wall at the eastern property line as shown in the attached
exhibits. The existing perimeter security fence will be mounted to the wall. The revision increases the amount of fill to
grade the lower yard to an estimated 470 yards, but remains under the 500-yard threshold for SEPA. A perforated
storage/drain pipe is shown in the plan to allow collection and dispersion of runoff entering the lower yard from paved
areas upslope in the yard. The footprint of the gravel area is the same as originally proposed, and the remainder of the
fill area will be seeded with grass and remain pervious.
To address section 19.120.120 of the City's revised code, the wall will be less than six feet tall and meet all setback
requirements. The block wall will be approximately 425 feet from the public right-of-way at 28th Ave S and is not visible
from the road due to the distance from the road and change in elevation. Three photos are attached from 281h Ave S
showing the view looking east from the three driveway entrances to the maintenance yard. The fill area and proposed
wall are behind (southeast of) the house shown in the north driveway photo and will not be visible. In the middle
driveway photo, the fill area and proposed wall will be left of the light poles seen in the middle of the photo and not
visible from the road. The fill area will be left (north of) the covered storage buildings seen in the south driveway photo
and will not be visible. Interstate 5 is approximately 130 feet east of the wall location, but existing native vegetation is
both mature and dense preventing the wall from being visible from the freeway.
Please let us know if you need any additional information before we proceed with the new fill limits.
Thanks,
Tony Doucette, P.E.
SWM Engineer
City of Federal Way
33325 8th Avenue South
Federal Way, WA 98003
P: (253) 835-2753
tong.doucette@cityoffederalway.com
RECEIVED
JAN 2 8 2015
CITY OF FEDERAL WAY
CDS
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(NOTE: Lakehaven Utility District
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