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Transportation Engineering NorthWest
Transportation Planning | Design | Traffic Impact & Operations
11400 SE 8th Street, Suite 200, Bellevue, WA 98004 | Office (425) 889-6747
MEMORANDUM
DATE: January 2, 2022
TO: Yong Qi
City of Renton
FROM: Amy Wasserman
TENW
SUBJECT: Trip Generation and Independent Transportation Impact Fee Estimate
UW Medicine Testing Lab at 1601 Lind Ave SW (PRE21-000393)
TENW Project #2020-301
This memorandum documents the trip generation and independent transportation impact fee estimate for the
proposed UW Medicine Testing Lab in Renton, WA. An independent transportation impact fee is allowed
by the Renton Municipal Code (RMC) 4-1-190 (H). An independent transportation impact fee is proposed
for this project because the specialized use is not consistent with a specific land use category from ITE Trip
Generation or the CityÊs impact fee schedule.
Project Description
The proposed project is located at 1601 Lind Ave SW in Renton, WA. It is our understanding that the existing
site includes approximately 200,000 square feet (SF) of building area that is currently entitled for office use.
The proposed UW Medicine Testing Lab project would construct a tenant improvement occupy the 1st floor,
which totals 39,834 SF. The proposed UW Medicine Testing Lab project would consist of 15,240 SF of
lab space and the remaining 24,594 SF of 1st floor space would be supporting administrative office use.
The testing lab will operate 24 hours a day, 7 days a week.
EXHIBIT 9
RECEIVED
01/13/2022 BGillia
PLANNING DIVISION
DocuSign Envelope ID: 3FB88489-C97A-493A-A1A9-1E21C2491C8D
Trip Generation and Independent Transportation Impact Fee Estimate
UW Medicine Testing Lab (Renton)
TENW January 2, 2022
Page 2
Background
Based on information provided by the project applicant, the City of Renton noted during the pre-application
meeting that a traffic study (that meets City of Renton traffic study guidelines) is required at land use submittal
if the proposed project generates more than 20 new PM peak hour project trips. Additionally, the proposed
project is subject to a transportation impact for of $7,145.85 per net new PM peak hour vehicle trip based
on the additional PM peak hour trips estimated to be generated by the tenant improvement.
Based on the CityÊs methodology and allowance for an independent impact fee per Renton Municipal Code
(RMC) 4-1-190 (H), we have calculated an independent transportation impact fee for the proposed UW
Medicine Testing Lab based on the use of tenant-specific trip generation data provided by the applicant.
UW Medicine Testing Lab Trip Generation
Based on information provided by the applicant, the proposed testing lab use is not consistent with a specific
land use category established in the Institute of Transportation Engineers (ITE) Trip Generation Manual. As
such, user-specific information was used for the trip generation estimate.
To estimate trip generation for the proposed UW Medicine Testing Lab, the tenant provided detailed forecasts
of all vehicular trips anticipated to occur on a typical weekday. These detailed weekday trip estimates are
summarized in Attachment A and described by the following categories:
Employee Trips – The facility is expected to have a maximum of 150 total employees in three shifts
of 50 employees each. The first shift is from 7:00 AM to 3:30 PM, the second shift is from 3:00 PM
to 11:30 PM, and the third shift is from 11:00 PM to 7:30 AM. Employees generally arrive 10-20
minutes before the start of their shift and depart 10-20 minutes after their shift ends.
Specimen Delivery/Pick-up Trips – Up to 16 trips for specimen delivery/pick-up are expected to
occur at the facility on a daily basis. These trips are anticipated to occur throughout all 24 hours of
the day with at most 2 vehicles arriving and departing during the same hour. The specimen
delivery/pick-up vehicles are anticipated to be on-site for less than 1 hour at a time.
Waste Pick-up/Supply Delivery Trips – Up to 8 waste pick-up/supply delivery trips are expected to
occur at the facility on a daily basis. These trips are anticipated to occur between 8:00 AM and
9:00 PM. The waste pick-up/supply delivery trips are anticipated to be on-site for less than 1 hour
at a time. One (1) custodian is anticipated to arrive daily around 6:00 PM and depart by 9:00 PM.
Other Trips – USPS Mail, UPS or FedEx pickup/deliveries are anticipated to occur once daily.
Additionally, miscellaneous trips anticipated to occur three times a week include Iron Mountain paper
shredding, and Aramark.
As shown in Attachment A, based on detailed trip generation forecast provided by the proposed tenant, the
proposed UW Medicine Testing Lab tenant improvement project is estimated to generate 52 trips during the
weekday AM peak hour (1 in, 51 out) and four (4) trips during the weekday PM peak hour (2 in, 2 out).
Comparison to Existing Use Trip Generation
Weekday AM and PM peak hour trip generation was estimated for the existing office use (to be replaced by
the proposed UW Medicine Testing Lab) based on methodology documented in the Institute of Transportation
Engineers (ITE) Trip Generation Manual, 11th Edition for Land Use Code (LUC) 710 (General Office Building).
As documented in the ITE Trip Generation Manual, an office use in a general urban/suburban location
EXHIBIT 9
DocuSign Envelope ID: 3FB88489-C97A-493A-A1A9-1E21C2491C8D
Trip Generation and Independent Transportation Impact Fee Estimate
UW Medicine Testing Lab (Renton)
TENW January 2, 2022
Page 3
generates 1.52 AM peak hour trips and 1.44 PM peak hour trips per 1,000 SF of gross floor area. Based
on the total 1st floor area of 39,834 SF, which was previously occupied by an office user, the existing use
is estimated to generate 61 AM peak hour trips and 57 PM peak hour trips.
Proposed Use Independent Transportation Impact Fee Calculation
The independent transportation impact fee calculation for the proposed UW Medicine Testing Lab tenant
improvement project is based on a comparison of the estimated PM peak hour project trips associated with
the proposed project compared to the PM peak hour trips generated by the existing use to be removed.
Based on the user-specific information provided by the applicant and the ITE Trip Generation Manual, the
proposed UW Medicine Testing Lab tenant improvement project is expected to result in a net reduction in
PM peak hour trips. Therefore, no transportation impact fee should be required.
Conclusion
Based on the user-specific information provided by the applicant and the ITE Trip Generation Manual, the
proposed UW Medicine Testing Lab tenant improvement project is expected to result in a net reduction in
weekday AM and PM peak hour trips when compared to the existing office user. Therefore, a Traffic Impact
Analysis (TIA) and transportation impact fee are not expected to be required.
If you have any questions regarding the information presented in this memo, please contact me at (425)
250-0579 or amy@tenw.com.
Attachments:
A. Trip Generation Calculations (as provided by UW Medicine)
EXHIBIT 9
DocuSign Envelope ID: 3FB88489-C97A-493A-A1A9-1E21C2491C8D
Trip Generation and Independent Transportation Impact Fee Estimate
UW Medicine Testing Lab (Renton)
ATTACHMENT A
Trip Generation Calculations
(as provided by UW Medicine)
EXHIBIT 9
DocuSign Envelope ID: 3FB88489-C97A-493A-A1A9-1E21C2491C8D
UW Medical Testing Lab (Renton)
Trip Generation Forecasts - Average Weekday
Time Period Entering Exiting Comment Entering Exiting Comment Entering Exiting Comment Entering Exiting Comment Entering Exiting Total Hour Entering Exiting Total
12:00 - 1:00 AM 0 0 0 0 0 0 0 0 0 0 0 12:00-1:00 AM 0 0 0
1:00 - 2:00 0 0 1 1 0 0 0 0 1 1 2 1:00-2:00 AM 1 1 2
2:00 - 3:00 0 0 0 0 0 0 0 0 0 0 0 2:00-3:00 AM 0 0 0
3:00 - 4:00 0 0 1 1 0 0 0 0 1 1 2 3:00-4:00 AM 1 1 2
4:00 - 5:00 0 0 0 0 0 0 0 0 0 0 0 4:00-5:00 AM 0 0 0
5:00 - 6:00 0 0 1 1 0 0 0 0 1 1 2 5:00-6:00 AM 1 1 2
6:00 - 6:30 0 0 0 0 0 0 0 0 0 0 0
6:30 - 7:00 50 0 shift 1 enter 0 0 0 0 0 0 50 0 50 6:00-7:00 AM 50 0 50
7:00 - 7:30 0 0 1 1 0 0 0 0 1 1 2 6:30-7:30 AM 51 1 52
7:30 - 8:00 0 50 shift 3 exit 0 0 0 0 0 0 0 50 50 7:00-8:00 AM 1 51 52
8:00 - 8:30 0 0 0 0 1 1 Supply Delivery 0 0 1 1 2 7:30-8:30 AM 1 51 52
8:30 - 9:00 0 0 0 0 0 0 0 0 0 0 0 8:00-9:00 AM 1 1 2
9:00 - 9:30 0 0 2 2 1 1 Supply Delivery 0 0 3 3 6 8:30-9:30 AM 3 3 6
9:30 - 10:00 0 0 0 0 0 0 0 0 0 0 0 9:00-10:00 AM 3 3 6
10:00 - 10:30 0 0 0 0 1 0 Waste Pickup Enter 1 1 US Mail Delivery/Pickup 2 1 3 9:30-10:30 AM 2 1 3
10:30 - 11:00 0 0 0 0 0 1 Waste Pickup Exit 0 0 0 1 1 10:00-11:00 AM 2 2 4
11:00 - 11:30 0 0 1 1 1 0 Trash Pickup Enter 1 1 Misc. 3x per week 3 2 5 10:30-11:30 AM 3 3 6
11:30 - Noon 0 0 0 0 0 1 Trash Pickup Exit 0 0 0 1 1 11:00-12:00 PM 3 3 6
12:00 - 12:30 PM 0 0 0 0 0 0 0 0 0 0 0 11:30-12:30 PM 0 1 1
12:30 - 1:00 0 0 0 0 0 0 0 0 0 0 0 12:00-1:00 PM 0 0 0
1:00 - 1:30 0 0 2 2 1 1 Supply Delivery 0 0 3 3 6 12:30-1:30 PM 3 3 6
1:30 - 2:00 0 0 0 0 1 1 Supply Delivery 0 0 1 1 2 1:00-2:00 PM 4 4 8
2:00 - 2:30 0 0 0 0 0 0 0 0 0 0 0 1:30-2:30 PM 1 1 2
2:30 - 3:00 50 0 shift 2 enter 0 0 0 0 0 0 50 0 50 2:00-3:00 PM 50 0 50
3:00 - 3:30 0 0 1 1 1 1 Supply Delivery 0 0 2 2 4 2:30-3:30 PM 52 2 54
3:30 - 4:00 0 50 shift 1 exit 0 0 0 0 0 0 0 50 50 3:00-4:00 PM 2 52 54
4:00 - 4:30 0 0 0 0 0 0 1 1 FedEx-UPS Delivery/Pickup 1 1 2 3:30-4:30 PM 1 51 52
4:30 - 5:00 0 0 0 0 0 0 0 0 0 0 0 4:00-5:00 PM 1 1 2
5:00 - 5:30 0 0 2 2 0 0 0 0 2 2 4 4:30-5:30 PM 2 2 4
5:30 - 6:00 0 0 0 0 0 0 0 0 0 0 0 5:00-6:00 PM 2 2 4
6:00 - 6:30 0 0 0 0 1 0 Custodial Enter 0 0 1 0 1 5:30-6:30 PM 1 0 1
6:30 - 7:00 0 0 0 0 0 0 0 0 0 0 0 6:00-7:00 PM 1 0 1
7:00 - 8:00 0 0 1 1 0 0 0 0 1 1 2 7:00 -8:00 PM 1 1 2
8:00 - 9:00 0 0 0 0 0 1 Custodial Exit 0 0 0 1 1 8:00-9:00 PM 0 1 1
9:00 - 10:00 0 0 2 2 0 0 0 0 2 2 4 9:00-10:00 PM 2 2 4
10:00 - 11:00 50 0 shift 3 enter 0 0 0 0 0 0 50 0 50 10:00-11:00 PM 50 0 50
11:00 - 12:00 0 50 shift 2 exit 1 1 0 0 0 0 1 51 52 11:00 PM - 12:00 AM 1 51 52
TOTAL TRIPS 150 150 16 16 8 8 3 3 177 177 354
TRIP GENERATION SUMMARY
Entering Exiting Total
Daily Trip Generation 177 177 354
AM Peak Hour 1 51 52
7:00 - 8:00 AM
PM Peak Hour 2 2 4
5:00 - 6:00 PM
Hourly Trip TotalsEmployee Trips Specimen Delivery/Pickup Trips Waste Pickup/Supply Delivery Other Trips (Mail, UPS, etc) Trip Totals
12/29/2021
EXHIBIT 9
EXHIBIT 9
DocuSign Envelope ID: 3FB88489-C97A-493A-A1A9-1E21C2491C8D