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Page 2 <br />kimley-horn.com 300 Morris Street, Suite 200, Durham, NC 27701 919 682 3583 <br />Trip Generation <br />As noted in the original TIA reports, the proposed project possesses unique trip generation <br />characteristics that outside the data range published in Trip Generation (Institute of Transportation <br />Engineers, Tenth Edition, 2017) for land-use code 945 (gas station with convenience store). While <br />general trip generation rates for this project were originally based on volume data collected at nine <br />similar sites in Texas and approved in other municipalities, this addendum was performed as a <br />sensitivity analysis to evaluate the impacts of a 10% increase in trip generation based on <br />discussions with NCDOT. <br />Phase 1 <br />Trip generation calculations for Phase 1 is shown in Table 1 below. <br />Table 1 <br />Traffic Generation (Vehicles)–Phase 1 <br />Land Use Intensity <br />AM Peak <br />Hour <br />PM Peak <br />Hour <br />Saturday <br />Peak Hour <br />In Out In Out In Out <br />Gasoline Station with <br />Convenience Store 120 pumps 711 630 968 893 1,376 1,321 <br />As shown in Table 1, assuming a 10% increase in site trips above the original TIA, the site would <br />be expected to generate 1,341 AM peak hour trips and 1,861 PM peak hour trips on a typical <br />weekday and 2,697 trips during the Saturday peak hour. <br />Phase 2 <br />Weekday AM and PM peak hour trip generation methodology for Phase 2 commercial uses, which <br />accounts for internally-captured trips with Phase 1, is consistent with the Buc-ee’s Phase 2 TIA. <br />Saturday peak hour analyses were not included as part of the original Buc-ee’s Phase 2 TIA but <br />are included herein. As ITE Trip Generation Manual has limited Saturday peak hour data for <br />several of the proposed land uses, alternative methodologies were incorporated to provide a <br />reasonable, yet still very conservative, approach to Saturday trip generation for the proposed <br />Phase 2 land uses. Those methodologies were reviewed with and approved by NCDOT <br />Congestion Management and are included in the Appendix of this memorandum. <br />Internal capture and pass-by rates were assumed to be equivalent to PM peak hour rates and <br />methodologies from ITE. As noted previously, internal capture includes capture with the proposed <br />Buc-ee’s site to account for the significant volume of trips anticipated with the commercial uses. <br />Based on the proposed approach and assumption that all peak hours for the proposed commercial <br />uses will occur concurrently, the analysis presented herein is anticipated to be extremely <br />conservative, likely overestimating actual traffic impact. <br />695