20-102489-Trip Generation-2020-05-18-V1 TENW
Transportation Engineering NorthWest
Transportation Planning | Design | Traffic Impact & Operations
11400 SE 8th Street, Suite 200, Bellevue, WA 98004 | Office (425) 889-6747
MEMORANDUM
DATE: May 18, 2020
TO: Sarady Long
City of Federal Way
FROM: Curtis Chin, P.E.
TENW
SUBJECT: Pape Kenworth Northwest – Federal Way, WA
Updated Trip Generation Estimate
TENW Project No. 6011
This memorandum documents the updated trip generation estimate for the proposed Federal Way Pape
Kenworth Northwest facility. The proposed site is located on the north side of S 320th Street east of I-5 on
7 parcels currently in un-incorporated King County that will be annexed into the City of Federal Way.
Project Description
The proposed Pape Kenworth Northwest facility would include the development 79,744 SF of building area.
The proposed facility includes Pape Kenworth Northwest new truck sales, maintenance facility, offices, and
a body repair shop. Access to the site would be provided via 2 driveways on 32nd Ave NE north of the
existing traffic signal at 32nd Avenue S/S 320th Street.
Updated Trip Generation Estimate
Pape Kenworth Northwest, Federal Way
TENW May 18, 2020
Page 2
Trip Generation
The latest version of ITEÊs Trip Generation, does not include a comparable land use to the proposed Kenworth
use. As a result, the trip generation estimate for the proposed project was based on an independent trip
generation study completed at four existing Pape Kenworth facilities located in Washington, Oregon, and
California.
Weekday daily and peak hour traffic counts were collected at the four existing PapeÊ Kenworth facilities on
three consecutive weekdays in October 2019 (location #4) and January 2020 (locations #1-3). Saturday
data was also collected at locations #1-3 in January 2020. A summary of the trip generation data collected
at the four sites used to determine the trip generation rate is included in the Attachment A. The resulting trip
generation rates from the trip generation study is shown in Table 1 below.
Table 1
Existing Kenworth Facilities
Trip Generation Study Results
Directional Distribution
Time Period Entering Exiting
Trip Rate1
(veh trips/1,000 SF)
Weekday Daily 50% 50% 11.59
Weekday AM Peak Hour 63% 37% 0.87
Weekday PM Peak Hour 37% 67% 0.87
Saturday Peak Hour 46% 54% 0.57
Note:
1. Based on trip data collected at four existing Pape Kenworth facilities located in WA, OR, and CA
in October 2019 and January 2020.
As shown in Table 1, based on the data collected at the four existing Pape Kenworth facilities, the derived
weekday daily rate is 11.59 trips per 1,000 SF, AM peak hour trip generation rate is 0.87 trips per 1,000
SF, PM peak hour trip generation rate is 0.87 per 1,000 SF, and Saturday peak hour rate is 0.57 trips per
1,000 SF.
Based on the above derived trip rates, the trips associated with the proposed 79,744 SF Pape Kenworth
Northwest project is summarized in Table 2.
Updated Trip Generation Estimate
Pape Kenworth Northwest, Federal Way
TENW May 18, 2020
Page 3
Table 2
Proposed Pape Kenworth Northwest Federal Way
Trip Generation Summary
Trips Generated
Time Period In Out Total
Weekday Daily 462 462 924
Weekday AM Peak Hour 43 26 69
Weekday PM Peak Hour 25 44 69
Saturday Peak Hour 21 24 45
As shown in Table 2, the proposed Pape Kenworth Northwest project is estimated to generate 924 weekday
daily trips with 69 trips occurring during the weekday AM peak hour (43 in, 26 out) and 69 trips occurring
during the weekday PM peak hour (25 in, 44 out). The project is estimated to generate 45 trips during the
Saturday peak hour (21 in, 24 out). The detailed trip generation calculations are included in the Attachment
A.
Since the project is estimated to generate less than 100 peak hour trips, the project would not be
considered a major new development and a TIA would not be required.
This trip generation information is also being used for the project traffic concurrency application.
If you have any questions, please feel free to contact me at (425) 250-5003 or chin@tenw.com.
cc: Bart Dickson, Cobalt Development
Jeff Schramm, TENW Principal
Attachment
Updated Trip Generation Estimate
Pape Kenworth Northwest, Federal Way
ATTACHMENT A
Pape Kenworth Trip Generation
Land Use Building Area In Out Trip Rate
1,2 In Out Total
Saturday Peak Hour
Proposed Use:
Pape Kenworth 79,744 SF 46% 54% 0.56 21 24 45
Saturday Peak Hour Trips = 21 24 45
Weekday Daily
Proposed Use:
Pape Kenworth 79,744 SF 50% 50% 11.59 462 462 924
Weekday Daily Trips = 462 462 924
AM Peak Hour
Proposed Use:
Pape Kenworth 79,744 SF 63% 37% 0.87 43 26 69
AM Peak Hour Trips = 43 26 69
PM Peak Hour
Proposed Use:
Pape Kenworth 79,744 SF 37% 63% 0.87 25 44 69
PM Peak Hour Trips = 25 44 69
Note:
1 Saturday trips based on a 1-day trip generation study at existing Pape Facilities in Washington, California, and Oregon.
2 Weekday trips based on 3-day trip generation studies at existing Pape Facilities in Washington, California, and Oregon
Directional Distribution Trips Generated
Location In Out Total
Building Area
(SF) 1
Trip Rate
(Trips/1,000 sf)
Lakewood, WA 11 11 22 27,000 0.81
Bakersfield, CA 20 19 39 24,000 1.63
Portland, OR 2 8 10 75,000 0.13
TOTAL 33 38 71 126,000 0.56
46%54%
Location In Out Total
Building Area
(SF) 1
Trip Rate
(Trips/1,000 sf)
Lakewood, WA 153 159 312 27,000 11.56
Bakersfield, CA 223 214 437 24,000 18.21
Portland, OR 300 304 604 75,000 8.05
SeaTac, WA1 245 246 491 33,125 14.82
TOTAL 921 923 1,844 159,125 11.59
50%50%
Location In Out Total
Building Area
(SF) 1
Trip Rate
(Trips/1,000 sf)
Lakewood, WA 16 8 24 27,000 0.89
Bakersfield, CA 20 15 35 24,000 1.46
Portland, OR 32 18 50 75,000 0.67
SeaTac, WA1 19 11 30 33,125 0.91
TOTAL 87 52 139 159,125 0.87
63%37%
Location In Out Total
Building Area
(SF) 1
Trip Rate
(Trips/1,000 sf)
Lakewood, WA 7 12 19 27,000 0.70
Bakersfield, CA 12 23 35 24,000 1.46
Portland, OR 13 33 46 75,000 0.61
SeaTac, WA1 19 20 39 33,125 1.18
TOTAL 51 88 139 159,125 0.87
37%63%
Note:
1. Counts conducted at SeaTac location were conducted on Tuesday 10/1/2019 to Thursday 10/3/2019.
PM Peak Hour (Highest One Hour Between 4-6 PM)
Weekday PM Peak Hour Three Day Average
Tuesday 1/28/2020 to Thursday 1/30/2020 1
Pape Kenworth
Existing Trip Generation Study
Saturday Peak Hour
Saturday Peak Hour Trips (1/25/2020)
AM Peak Hour (Highest One Hour Between 7-9 AM)
Weekday AM Peak Hour Three Day Average
Tuesday 1/28/2020 to Thursday 1/30/2020 1
Daily
Daily
Tuesday 1/28/2020 to Thursday 1/30/2020 1
5/18/2020
Pape Kenworth
Existing Trip Generation Summary - Saturday Peak
1. Pacific Highway, Lakewood, WA
Interval
Begin In Out Total
8:00 AM 1 3
4
8:15 AM 2 1
3
8:30 AM 0 0
0
8:45 AM 0 2
2 9 8:00 am - 9:00 am
9:00 AM 1 0
1 6 8:15 am - 9:15 am
9:15 AM 4 2
6 9 8:30 am - 9:30 am
9:30 AM 2 5
7 16 8:45 am - 9:45 am
9:45 AM 2 2
4 18 9:00 am - 10:00 am
10:00 AM 1 1
2 19 9:15 am - 10:15 am
10:15 AM 1 1
2 15 9:30 am - 10:30 am
10:30 AM 1 1
2 10 9:45 am - 10:45 am
10:45 AM 0 0
0 6 10:00 am - 11:00 am
11:00 AM 1 0
1 5 10:15 am - 11:15 am
11:15 AM 1 1
2 5 10:30 am - 11:30 am
11:30 AM 2 0
2 5 10:45 am - 11:45 am
11:45 AM 5 4
9 14 11:00 am - 12:00 pm
12:00 PM 1 3
4 17 11:15 am - 12:15 pm
12:15 PM 5 1
6 21 11:30 am - 12:30 pm
12:30 PM 0 3
3 22 11:45 am - 12:45 pm
12:45 PM 2 2
4 17 12:00 pm - 1:00 pm
1:00 PM 2 1
3 16 12:15 pm - 1:15 pm
1:15 PM 3 2
5 15 12:30 pm - 1:30 pm
1:30 PM 2 2
4 16 12:45 pm - 1:45 pm
1:45 PM 4 3
7 19 1:00 pm - 2:00 pm
2:00 PM 2 4
6 22 1:15 pm - 2:15 pm
2:15 PM 0 1
1 18 1:30 pm - 2:30 pm
2:30 PM 2 3
5 19 1:45 pm - 2:45 pm
2:45 PM 0 1
1 13 2:00 pm - 3:00 pm
3:00 PM 1 2
3 10 2:15 pm - 3:15 pm
3:15 PM 4 0
4 13 2:30 pm - 3:30 pm
3:30 PM 1 3
4 12 2:45 pm - 3:45 pm
3:45 PM 0 3
3 14 3:00 pm - 4:00 pm
11 11 22 Peak Hour is 11:45 am - 12:45 pm
11 11 22
2. Quinn Rd. Bakersfield, CA
Interval
Begin In Out In Out In Out In Out Total
8:00 AM 0 1 0 0 1 1
1 2 3
8:15 AM 2 0 1 0 0 0
3 0 3
8:30 AM 5 5 0 0 0 0
5 5 10
8:45 AM 0 1 0 0 1 1
1 2 3 19 8:00 am - 9:00 am
9:00 AM 1 1 1 2 1 1
3 4 7 23 8:15 am - 9:15 am
9:15 AM 1 0 0 0 0 2
1 2 3 23 8:30 am - 9:30 am
9:30 AM 1 3 0 1 1 0
2 4 6 19 8:45 am - 9:45 am
9:45 AM 3 1 0 0 0 0
3 1 4 20 9:00 am - 10:00 am
10:00 AM 1 2 0 0 0 0
1 2 3 16 9:15 am - 10:15 am
10:15 AM 3 2 0 0 0 0
3 2 5 18 9:30 am - 10:30 am
10:30 AM 0 2 0 0 0 0
0 2 2 14 9:45 am - 10:45 am
10:45 AM 4 0 0 1 1 0
5 1 6 16 10:00 am - 11:00 am
11:00 AM 0 5 0 0 0 0
0 5 5 18 10:15 am - 11:15 am
11:15 AM 1 2 0 0 0 0
1 2 3 16 10:30 am - 11:30 am
11:30 AM 3 1 0 1 1 0
4 2 6 20 10:45 am - 11:45 am
11:45 AM 4 3 0 0 0 0
4 3 7 21 11:00 am - 12:00 pm
12:00 PM 7 3 0 0 0 0
7 3 10 26 11:15 am - 12:15 pm
12:15 PM 3 2 0 0 0 1
3 3 6 29 11:30 am - 12:30 pm
12:30 PM 3 6 1 3 2 1
6 10 16 39 11:45 am - 12:45 pm
12:45 PM 3 3 0 0 0 0
3 3 6 38 12:00 pm - 1:00 pm
1:00 PM 3 3 0 0 0 0
3 3 6 34 12:15 pm - 1:15 pm
1:15 PM 1 1 0 2 3 0
4 3 7 35 12:30 pm - 1:30 pm
1:30 PM 3 1 0 0 1 1
4 2 6 25 12:45 pm - 1:45 pm
1:45 PM 0 3 0 0 0 2
0 5 5 24 1:00 pm - 2:00 pm
2:00 PM 1 0 0 0 0 0
1 0 1 19 1:15 pm - 2:15 pm
2:15 PM 4 1 0 0 0 1
4 2 6 18 1:30 pm - 2:30 pm
2:30 PM 2 3 0 0 0 0
2 3 5 17 1:45 pm - 2:45 pm
2:45 PM 1 6 0 0 0 0
1 6 7 19 2:00 pm - 3:00 pm
3:00 PM 2 2 0 0 0 0
2 2 4 22 2:15 pm - 3:15 pm
3:15 PM 0 1 0 0 0 0
0 1 1 17 2:30 pm - 3:30 pm
3:30 PM 0 3 0 1 0 0
0 4 4 16 2:45 pm - 3:45 pm
3:45 PM 0 2 0 1 0 0
0 3 3 12 3:00 pm - 4:00 pm
17 14 1 3 2 2 20 19 39 Peak Hour is 11:45 am - 12:45 pmPeak Hour 31 4
#1
Quinn Rd / Northern
Access
#2
Aerodyne Way /
Northern Access
#3
Aerodyne Way /
Southern Access Total Trips
Hourly Totals
#1
Pacific Highway S /
Northern Access
Hourly Totals
4 39
Peak Hour
11:45 am -
12:45 pm 22
Peak Hour
1:15 pm -
2:15 pm 22
Peak Hour is 1:15 am - 2:15 pm
5/18/2020
Pape Kenworth
Existing Trip Generation Summary - Saturday Peak
3. Columbia Blvd, Portland, OR
In Out In Out In Out In Out Total
8:00 AM 0 0 1 0 1 0
2 0 2
8:15 AM 0 0 0 0 0 0
0 0 0
8:30 AM 0 0 0 0 0 0
0 0 0
8:45 AM 0 0 1 0 1 0
2 0 2 4 8:00 am - 9:00 am
9:00 AM 0 0 0 0 0 0
0 0 0 2 8:15 am - 9:15 am
9:15 AM 0 0 0 0 0 0
0 0 0 2 8:30 am - 9:30 am
9:30 AM 0 0 0 0 0 0
0 0 0 2 8:45 am - 9:45 am
9:45 AM 0 0 0 0 0 0
0 0 0 0 9:00 am - 10:00 am
10:00 AM 0 0 1 0 1 0
2 0 2 2 9:15 am - 10:15 am
10:15 AM 0 0 0 0 0 0
0 0 0 2 9:30 am - 10:30 am
10:30 AM 0 0 0 0 0 0
0 0 0 2 9:45 am - 10:45 am
10:45 AM 0 0 1 3 1 3
2 6 8 10 10:00 am - 11:00 am
11:00 AM 0 0 0 1 0 1
0 2 2 10 10:15 am - 11:15 am
11:15 AM 0 0 0 0 0 0
0 0 0 10 10:30 am - 11:30 am
11:30 AM 0 0 0 0 0 0
0 0 0 10 10:45 am - 11:45 am
11:45 AM 0 0 0 0 0 0
0 0 0 2 11:00 am - 12:00 pm
12:00 PM 0 0 0 0 0 0
0 0 0 0 11:15 am - 12:15 pm
12:15 PM 0 0 1 0 1 0
2 0 2 2 11:30 am - 12:30 pm
12:30 PM 0 0 0 0 0 0
0 0 0 2 11:45 am - 12:45 pm
12:45 PM 0 0 0 0 0 0
0 0 0 2 12:00 pm - 1:00 pm
1:00 PM 0 0 0 0 0 0
0 0 0 2 12:15 pm - 1:15 pm
1:15 PM 0 0 2 0 2 0
4 0 4 4 12:30 pm - 1:30 pm
1:30 PM 0 0 0 0 0 0
0 0 0 4 12:45 pm - 1:45 pm
1:45 PM 0 0 1 0 1 0
2 0 2 6 1:00 pm - 2:00 pm
2:00 PM 0 0 0 1 0 1
0 2 2 8 1:15 pm - 2:15 pm
2:15 PM 0 0 1 0 1 0
2 0 2 6 1:30 pm - 2:30 pm
2:30 PM 0 0 0 1 0 1
0 2 2 8 1:45 pm - 2:45 pm
2:45 PM 0 0 0 0 0 0
0 0 0 6 2:00 pm - 3:00 pm
3:00 PM 0 0 0 0 0 0
0 0 0 4 2:15 pm - 3:15 pm
3:15 PM 0 0 1 1 1 1
2 2 4 6 2:30 pm - 3:30 pm
3:30 PM 0 0 0 0 0 0
0 0 0 4 2:45 pm - 3:45 pm
3:45 PM 0 0 0 0 0 0
0 0 0 4 3:00 pm - 4:00 pm
0 0 2 3 2 3 4 6 10 Peak Hour is 10:00 am - 11:00 am
0 0 1 4 1 4 2 8 10
0 0 1 4 1 4 2 8 10
0 0 1 4 1 4 2 8 10
0 0 1 4 1 4 2 8 10
Hourly Totals
#1
NE Columbia Blvd /
West Access
#3
NE Columbia Blvd /
Eastern Access
5 10
5 10
Peak Hour
10:00 am -
11:00 am 0 5
Interval
Begin
Total Trips
#2
NE Columbia Blvd
/ Center Access
Peak Hour is 10:15 am - 11:15 am
Peak Hour is 10:30 am - 11:30 am
Peak Hour is 10:45 am - 11:45 amPeak Hour
10:45 am -
11:45 am 0 5 5 10
Peak Hour
10:30 am -
11:30 am 0 5 5 10
Peak Hour
10:15 am -
11:15 am 0 5
AVG
PEAK HOUR
Average Peak Hour
0 5 5 10
5/18/2020
Pape Kenworth
TENW Project No. 6011
Day In Out Total
Building
Area (SF) Trip Rate
Tuesday - January 28, 2020 150 154 304
Wednesday - January 29, 2020 151 161 312
Thursday - January 30, 2020 160 161 321
Three Day Average 153 159 312 27,000 11.56
49% 51%
27,000
Pape Kenworth
Pacific Highway, Lakewood, WA
Existing Trip Generation Summary - Daily
Three-Day Average of Tuesday 1/28/20 to Thursday 1/30/20
Daily
5/18/2020
Pape Kenworth
TENW Project No. 6011
Day In Out Total
Building
Area (SF) 1 Trip Rate
Tuesday - January 28, 2020 229 229 458
Wednesday - January 29, 2020 218 218 436
Thursday - January 30, 2020 222 195 417
Three Day Average 223 214 437 24,000 18.21
51%49%
24,000
Pape Kenworth
Quinn Rd. Bakersfield, CA
Existing Trip Generation Summary - Daily
Three-Day Average of Tuesday 1/28/20 to Thursday 1/30/20
Daily
5/18/2020
Pape Kenworth
TENW Project No. 6011
Day In Out Total
Building
Area (SF) Trip Rate
Tuesday - January 28, 2020 286 296 582
Wednesday - January 29, 2020 302 298 600
Thursday - January 30, 2020 313 318 631
Three Day Average 300 304 604 75,000 8.05
50% 50%
75,000
Pape Kenworth
Columbia Blvd, Portland, OR
Existing Trip Generation Summary - Daily
Three-Day Average of Tuesday 1/28/20 to Thursday 1/30/20
Daily
5/18/2020
Pape Kenworth
TENW Project No. 6011
Day In Out Total
Building
Area (SF) Trip Rate
Tuesday - January 28, 2020 247 250 497
Wednesday - January 29, 2020 253 251 504
Thursday - January 30, 2020 234 237 471
Three Day Average 245 246 491 33,125 14.82
Note:50% 50%
1. Building area per King County parcel records.
33,125
Pape Kenworth
20220 International Blvd, Seatac, WA 98198
Existing Trip Generation Summary - Daily
Three-Day Average of Tuesday 1/28/20 to Thursday 1/30/20
Daily
5/18/2020
Pape Kenworth
TENW Project No. 6011
Day In Out Total
Building
Area (SF) Trip Rate
Tuesday - January 28, 2020 13 12 25
Wednesday - January 29, 2020 10 6 16
Thursday - January 30, 2020 23 7 30
Three Day Average 16 8 24 27,000 0.89
67%33%
27,000
Three-Day Average of Tuesday 1/28/20 to Thursday 1/30/20
AM Peak Hour
Pape Kenworth
Pacific Highway, Lakewood, WA
Existing Trip Generation Summary - Weekday AM Peak
5/18/2020
Pape Kenworth
TENW Project No. 6011
Day In Out Total
Building
Area (SF) Trip Rate
Tuesday - January 28, 2020 24 19 43
Wednesday - January 29, 2020 16 13 29
Thursday - January 30, 2020 20 13 33
Three Day Average 20 15 35 24,000 1.46
57%43%
Pape Kenworth
Existing Trip Generation Summary - Weekday AM Peak
Three-Day Average of Tuesday 1/28/20 to Thursday 1/30/20
AM Peak Hour
24,000
Quinn Rd. Bakersfield, CA
5/18/2020
Pape Kenworth
TENW Project No. 6011
Day In Out Total
Building
Area (SF) Trip Rate
Tuesday - January 28, 2020 31 15 46
Wednesday - January 29, 2020 37 17 54
Thursday - January 30, 2020 27 23 50
Three Day Average 32 18 50 75,000 0.67
64%36%
Pape Kenworth
Columbia Blvd, Portland, OR
Existing Trip Generation Summary - Weekday AM Peak
Three-Day Average of Tuesday 1/28/20 to Thursday 1/30/20
AM Peak Hour
75,000
5/18/2020
Pape Kenworth
TENW Project No. 6011
Day In Out Total
Building Area
(SF) 1 Trip Rate
Tuesday - October 1, 2019 20 13 33
Wednesday - October 2, 2019 21 10 31
Thursday - October 3, 2019 14 11 25
3-Day Average 19 11 30 33,125 0.91
Note:63%37%
1. Building area per King County parcel records.
Pape Kenworth
20220 International Blvd, Seatac, WA
Existing Trip Generation Summary - Weekday AM Peak
Three-Day Average of Tuesday 10/01/19 to Thursday 10/03/19
AM Peak Hour
5/18/2020
Pape Kenworth
TENW Project No. 6011
Day In Out Total
Building
Area (SF) Trip Rate
Tuesday - January 28, 2020 8 13 21
Wednesday - January 29, 2020 9 13 22
Thursday - January 30, 2020 4 11 15
Three Day Average 7 12 19 27,000 0.70
37%63%
Pape Kenworth
Pacific Hwy SW, Lakewood, WA
Existing Trip Generation Summary - Weekday PM Peak
Three-Day Average of Tuesday 1/28/20 to Thursday 1/30/20
PM Peak Hour
27,000
5/18/2020
Pape Kenworth
TENW Project No. 6011
Day In Out Total
Building
Area (SF) Trip Rate
Tuesday - January 28, 2020 13 30 43
Wednesday - January 29, 2020 11 19 30
Thursday - January 30, 2020 11 21 32
Three Day Average 12 23 35 24,000 1.46
34%66%
Pape Kenworth
Quinn Rd. Bakersfield, CA
Existing Trip Generation Summary - Weekday AM Peak
Three-Day Average of Tuesday 1/28/20 to Thursday 1/30/20
AM Peak Hour
24,000
5/18/2020
Pape Kenworth
TENW Project No. 6011
Day In Out Total
Building
Area (SF) Trip Rate
Tuesday - January 28, 2020 13 32 45
Wednesday - January 29, 2020 12 30 42
Thursday - January 30, 2020 13 38 51
Three Day Average 13 33 46 75,000 0.61
28%72%
Pape Kenworth
Columbia Blvd, Portland, OR
Existing Trip Generation Summary - Weekday PM Peak
Three-Day Average of Tuesday 1/28/20 to Thursday 1/30/20
PM Peak Hour
75,000
5/18/2020
Pape Kenworth
TENW Project No. 6011
Day In Out Total
Building Area
(SF) 1 Trip Rate
Tuesday - October 1, 2019 20 22 42
Wednesday - October 2, 2019 24 25 49
Thursday - October 3, 2019 13 14 27
3-Day Average 19 20 39 33,125 1.18
Note:49%51%
1. Building area per King County parcel records.
Pape Kenworth
20220 International Blvd, Seatac, WA
Existing Trip Generation Summary - Weekday PM Peak
Three-Day Average of Tuesday 10/01/19 to Thursday 10/03/19
PM Peak Hour
5/18/2020