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Home My WebLink AboutRS_Traffic_Study1011 E Main Ave Suite 453 | Puyallup, WA | 98372 (253) 770-1401| heathtraffic.com . TRIP GENERATION ASSESSMENT Renton Daycare Renton, Washington March 5, 2025 HeathTraffic.com Renton Daycare – Trip Generation Assessment 2 Renton Daycare TRIP GENERATION ASSESSMENT Prepared for: Christhian Arcila 425-299-8913 Prepared by: Heath & Associates PO Box 397 Puyallup, WA 98371 (253) 770-1401 Heathtraffic.com License: 03/05/2025 HeathTraffic.com Renton Daycare – Trip Generation Assessment 3 RENTON DAYCARE TRIP GENERATION ASSESSMENT 1. INTRODUCTION Heath & Associates has been engaged to prepare a trip generation assessment for the proposed Renton Daycare development. This report will summarize the project and provide trip generation, distribution, and assignment information. 2. PROJECT DESCRIPTION Proposal • Renton Daycare is a proposed daycare facility for a site located within the City of Renton, Washington. Currently, a ~1,312 square feet (sf) commercial office building and a 504 sf single-wide trailer exists on-site. These will be repurposed for the proposed daycare. Additionally, the development is to include a 790 sf fenced outdoor playground for daycare use only. Location • The subject site is situated on 0.45-acres within tax parcel: 102305-9117. • The site address is 4508 NE 4th Street, Renton. • The site is bordered to the south by NE 4th Street, with an existing access connection via two driveways extending north from NE 4th Street. A vicinity map is provided in Figure 1 below. A conceptual site plan is shown in Figure 2. Figure 1: Vicinity Map SITE NE 4th St Br e m e r t o n A v e N E Du v a l l A v e N E N HeathTraffic.com Renton Daycare – Trip Generation Assessment 4 Figure 2: Site Plan N HeathTraffic.com Renton Daycare – Trip Generation Assessment 5 3. TRIP GENERATION Trip generation is defined as the number of vehicle movements that enter or exit the prospective project site during a designated time period, such as a specific peak hour (AM or PM) or an entire day. Trip estimates were derived from the Institute of Transportation Engineers (ITE) publication, Trip Generation, 11th Edition. The ITE land use for the proposed development was defined as LUC – 565 (Day Care Center) using square footage as the input variable. The ITE land use for the previous development was defined as LUC – 712 (Small Office Building) using square footage as the input variable. ITE average rates were used to determine trip ends. Table 1 below highlights the trip generation for the previous use and the proposed Renton Daycare. Table 1: Project Trip Generation Land Use Variable Size AWDT AM Peak Hour PM Peak Hour In Out Total In Out Total Proposed Use Day Care Center (LUC 565) KSF 1.82 87 10 10 20 9 11 20 Previous Use (Credit for trips) Small Office Building (LUC 712) KSF 1.82 -26 -2 -1 -3 -1 -3 -4 Total Net New Site Trips 61 8 9 17 8 8 16 Based on ITE data, the proposed Renton Daycare is estimated to generate 61 net new daily trips with 17 net new AM peak hour trips (8 entering, 9 exiting) and 16 net new PM peak hour trips (8 entering, 8 exiting). It should also be noted that ITE considers 40% of daycare trips to be in the form of pass-by. Consequently, out of the 16 net new PM peak hour trips, 6 could be pass-by and are not considered new trips to the city system. 4. TRIP DISTRIBUTION Trip distribution describes the process by which project-generated trips are dispersed onto the roadway network surrounding the site. Figures 3 and 4 on the following pages illustrate the estimated AM and PM peak hour trip distribution and assignment. Given the site location and use, project trips were split 50% east & 50% west at the site driveway. FIGURE 3 AM PEAK HOUR TRIP DISTRIBUTION & ASSIGNMENT RENTON DAYCARE SITE 50%50% 4 5 44STOP AM PEAK HOUR TRIPS INBOUND: 8 VPH OUTBOUND: 9 VPH N NE 4TH ST BR E M E R T O N A V E N E DU V A L L A V E N E Renton Daycare – Trip Generation Assessment 6 FIGURE 4 PM PEAK HOUR TRIP DISTRIBUTION & ASSIGNMENT RENTON DAYCARE SITE 50%50% 4 4 44STOP PM PEAK HOUR TRIPS INBOUND: 8 VPH OUTBOUND: 8 VPH N NE 4TH ST BR E M E R T O N A V E N E DU V A L L A V E N E Renton Daycare – Trip Generation Assessment 7 HeathTraffic.com Renton Daycare – Trip Generation Assessment 8 5.CONCLUSION Renton Daycare is a proposed daycare facility for a site located within the City of Renton, Washington. Currently, a ~1,312 square feet (sf) commercial office building and a 504 sf single-wide trailer exists on-site. These will be repurposed for the proposed daycare. Additionally, the development is to include a 790 sf fenced outdoor playground for daycare use only. Based on ITE data, the proposed change in use is estimated to generate 61 net new daily trips with 17 net new AM peak hour trips (8 entering, 9 exiting) and 16 net new PM peak hour trips (8 entering, 8 exiting). As this is under 20 peak hour trips, no further analysis is identified at this time. Additionally, ITE data indicates that 40% of peak-hour trips may be pass-by trips, which do not introduce new traffic to the city's roadway system. Please contact me should you have any questions or require further analysis. Thank you, Aaron Van Aken, P.E. PTOE avanaken@heathtraffic.com HeathTraffic.com Renton Daycare – Trip Generation Assessment 9 RENTON DAYCARE TRIP GENERATION ASSESSMENT Appendix ITE Trip Generation Sheets 11/2/22, 2:49 PM https://itetripgen.org/query/PrintGraph2?code=565&ivlabel=QFQAF&timeperiod=AWDVTE&x=&edition=639&locationCode=Gener… https://itetripgen.org/printGraph 1/1 Day Care Center (565) Vehicle Trip Ends vs:1000 Sq. Ft. GFA On a:Weekday Setting/Location:General Urban/Suburban Number of Studies:27 Avg. 1000 Sq. Ft. GFA:5 Directional Distribution:50% entering, 50% exiting Vehicle Trip Generation per 1000 Sq. Ft. GFA Average Rate Range of Rates Standard Deviation 47.62 12.12 - 211.06 29.78 Data Plot and Equation T = T r i p E n d s X = 1000 Sq. Ft. GFA Study Site Average Rate Fitted Curve Equation: Not Given R²= **** Trip Gen Manual,11th Edition Institute of Transportation Engineers 0 5 10 15 200 100 200 300 400 500 Renton Daycare - Trip Generation Assessment 10 11/2/22, 2:50 PM https://itetripgen.org/query/PrintGraph2?code=565&ivlabel=QFQAF&timeperiod=TASIDE&x=&edition=639&locationCode=General… https://itetripgen.org/printGraph 1/1 Day Care Center (565) Vehicle Trip Ends vs:1000 Sq. Ft. GFA On a:Weekday, Peak Hour of Adjacent Street Traffic, One Hour Between 7 and 9 a.m. Setting/Location:General Urban/Suburban Number of Studies:89 Avg. 1000 Sq. Ft. GFA:5 Directional Distribution:53% entering, 47% exiting Vehicle Trip Generation per 1000 Sq. Ft. GFA Average Rate Range of Rates Standard Deviation 11.00 1.79 - 57.02 6.08 Data Plot and Equation T = T r i p E n d s X = 1000 Sq. Ft. GFA Study Site Average Rate Fitted Curve Equation: Not Given R²= **** Trip Gen Manual,11th Edition Institute of Transportation Engineers 0 5 10 15 200 50 100 150 200 Renton Daycare - Trip Generation Assessment 11 Renton Daycare - Trip Generation Assessment 12 Renton Daycare - Trip Generation Assessment 13 Renton Daycare - Trip Generation Assessment 14 Renton Daycare - Trip Generation Assessment 15 HeathTraffic.com RENTON DAYCARE TRIP GENERATION ASSESSMENT Appendix Site Plan Renton Daycare - Trip Generation Assessment 16 EagleView Technologies, Inc., King County, King County 0 40 80 120 16020 US Feet Subject Property Parcel: 102305-9117 King_County_Parcels Approximate Data Plot Locations Approximate Stream 1 Type Ns Approximate Wetland A Cat. III Approximate 100' Wetland Buffer Approximate 15' Building Setback A-1 A-4 OHW1-6 OHW1-1 DP#1 DP#2 50' Stream buffer located entirely within wetland buffer NEW RAMP A 36-inch tall concreteblock retaining wall designed for stabilizingslopes and preventingsoil erosion. Constructedwith 6-in H x 15.6-in L x12-in D Gray ConcreteRetaining Wall Blocks SITE PLAN SCALE: 1/16" = 1'-0"1 N A0.1 45 0 8 n e 4 t h s t RE N T O N , W A 9 8 0 5 6 DA Y C A R E CO S T U M E R : O A S I S H O M E D A Y C A R E L L C 45 0 8 n e 4 t h s t RE N T O N , W A 9 8 0 5 8 Renton Daycare - Trip Generation Assessment 17