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TIA REVIEW COMMENTS DATE: July 19, 2024 TO: Colin Cortes and Chris Kerr I City of Woodburn FROM: Jenna Bogert, PE I DKS Associates SUBJECT: US Market Gas Station (Newberg Hwy) TIA Review (CU 24-02) Project #24150-000 INTRODUCTION In February 2024, the City of Woodburn provided the submitted transportation impact analysis (TIA)1 for the proposed US Market Gas Station development located at 2540 & 2600 Newberg Highway in Woodburn, Oregon to DKS Associates and requested a review of the analysis assumptions and findings. The traffic count data used the analysis was from 2019, making it nearly five years outdated and therefore, DKS requested that new traffic counts be collected and a new TIA be produced and included some recommended analysis assumptions growth rates, list of in-process developments). In July 2024, the City of Woodburn received a revised TIA2 (dated June 23, 2023) from the applicant, and asked DKS to conduct a review of the analysis and findings. This memorandum provides a list of comments and clarifications from DKS related to the analysis assumptions, proposed mitigations, and any suggested revisions to the TIA. TIA COMMENTS 1. It is unclear where the pass-by rates of 76% for weekday AM and 75% for weekday PM for the gas station with convenience store come from? The ITE Trip Generation Handbook (3rd Edition) reports an average pass-by reduction of 62% for the AM peak period and 56% for the PM peak period for Gas Station with Convenience Store (945). DKS requests that the traffic engineer provide justification for the higher pass-by rates. 2. All other analysis assumptions appear to be reasonable and consistent with the City’s code. 1 Woodburn US Market Transportation Impact Analysis, Transight Consulting, August 13, 2021. 2 Woodburn US Market Transportation Impact Analysis, Transight Consulting, June 23, 2023.