22-102749-UP-Parking Study-06-15-2022-V1Date: June 3, 2022
To: Sloan Clack
Corliss Management Group LLC
c/o Ms. Colleen Harris
Apex Engineering
From: Peyton Whalen, Transportation Planner
Subject: Plant 2 Relocation Parking Assessment
The intent of this memo serves to provide a parking assessment for the proposed Plant 2
Relocation development.
PROJECT DESCRIPTION
The Plant 2 Relocation development proposes to relocate the existing concrete plant to a
neighboring location as depicted in Figure 1 below. As illustrated, the existing plant location is
outlined in red and the proposed location in blue. The proposed subject site is bordered to the
west by SR-99 (Pacific Highway S) and to the south by S 351st Street. The site is located on a
cumulative 4.19-acres within tax parcel #’s: 2021049-163; -155; -043; & -162. All existing on-site
structures and uses would be eliminated prior to new construction. Access is proposed to
eliminate two of the three existing curb cuts along SR-99 while maintaining a central driveway and
a single access to the south via S 351st Street. The access on SR-99 would be restricted to right-
turns only given the continuous raised median along SR-99. A total of 4 parking stalls are
proposed on-site. Figure 2 presents the conceptual site plan and access locations.
Existing Plant
Proposed Location
Figure 1: Vicinity Map
Plant 2 Relocation
Parking Assessment
PO Box 397 Puyallup, WA 98371
(253) 770 1401 heathtraffic.com
Heath & Associates
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HEATH & ASSOCIATES, INC Transportation Planning & Engineering
Figure 2: Site Plan
Plant 2 Relocation
Parking Assessment
PO Box 397 Puyallup, WA 98371
(253) 770 1401 heathtraffic.com
Heath & Associates
2/3
CITY PARKING REQUIREMENTS
Per the City of Federal Way Municipal Code Chapter 19.240.040, required on-site parking spaces
for gravel batch plants are determined on a case-by-case basis. Therefore, Batch Plant 2
characteristics are proposed to be analyzed to generate a site-specific parking demand estimation
to determine if the 4 proposed on-site stalls will satisfy demands. Descriptions of site
characteristics including operations data, employee counts and anticipated on-site staff scheduling
are provided in the following section.
SITE CHARACTERISTICS & ESTIMATED PARKING DEMAND
To quantify parking demands associated with the proposed development, site characteristics were
analyzed. All customers visiting the site are anticipated to do so via concrete trucks. Customers
will not be permitted to depart their vehicle and will stage on-site in designated locations to load.
As such, customers will not require parking stalls given the controlled nature of their site visit. The
plant is anticipated to typically operate from 6:00 AM – 5:00 PM. Two full-time employees will
manage operations on-site during these hours. Moreover, the site may occasionally operate for
24-hour period when necessitated by construction demands. Assuming a shift change that may
result in an overlap of staff on-site, four employees may be on-site concurrently for a brief duration
as two staff depart and two arrive. To provide a conservative estimation, it is anticipated that each
employee would drive to work and require a parking stall. Therefore, a maximum of four estimated
employees on-site (albeit for a very short duration) would yield an on-site demand of four parking
stalls at a given time. As such the development proposal comprising four parking stalls on-site is
anticipated to satisfy parking demands based on the outlined site characteristics and operations.
CONCLUSION
The Plant 2 Relocation proposes to relocate operations from 35053 16th Avenue S to the west on
a similar sized area totaling 4.19-acres comprised within four tax parcels. A total of four parking
stalls are proposed on-site. Based on City of Federal Way Municipal Code, on-site parking
requirements are to be determined on a case-by-case basis. As outlined herein this report, the
maximum anticipated number of employees on-site in addition to customer operations will yield a
maximum parking demand of four stalls. Overall, parking is anticipated to sufficiently be met given
an analysis of proposed site characteristics and operations. No parking deficiencies are identified
as a result of the proposed development.
Please call if you require additional information.
Peyton Whalen, Transportation Planner
Plant 2 Relocation
Parking Assessment
PO Box 397 Puyallup, WA 98371
(253) 770 1401 heathtraffic.com
Heath & Associates
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