Agenda - Planning Commission - 06/23/2022

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Josh Nyquist,Executive Director of Building Operations May 26,2022 PACT Charter School I Traffic Impact Study Page 21 6. Results of the weekday vehicle trip generation estimate indicate that the proposed PACT Charter School and St. Katharine Drexel Church development is expected to generate a total of 627 a.m. combined peak hour trips, 547 school dismissal peak hour trips, 187 p.m. commuter peak hour trips, and 2,498 daily trip ends (50 percent in/50 percent out). 7. Results of the Sunday vehicle trip generation estimate indicate that the proposed St. Katharine Drexel Church development is expected to generate a total of 128 a.m. combined peak hour trips and 523 daily trip ends (50 percent in/50 percent out). It was assumed that there would be no PACT Charter School concurrent events held on Sunday. 8. The PACT Charter School may also generate special event related trips associated with the athletic facilities and diverse academic activities. Note that the number of these special event trips may range widely depending on the event and that these trips are not regularly occurring trips. Therefore, these special event trips were not considered normal weekday activity and were not included in the traffic forecasts and analysis for the proposed PACT Charter School development. 9. Results of the year 2028 Build Conditions intersection capacity analysis indicate that all study intersections are expected to continue to operate at an acceptable overall LOS B or better during the peak hours under existing traffic control and intersection geometrics. No significant queuing or delay issues were identified, except for the Armstrong Boulevard/Alpine Drive intersection where the westbound approach would continue to operate at a LOS F during the p.m. peak hour (note: no PACT Charter School traffic was assigned to this westbound Alpine Drive approach). The future conversion of Armstrong Boulevard/Alpine Drive to a single-lane roundabout will improve the operations and all approaches will operate at a LOS A during the peak hours. 10. The existing poor operation of the westbound approach to the Armstrong Boulevard/Alpine Drive intersection is due to higher traffic volumes and uninterrupted flow on Armstrong Boulevard and limited Alpine Drive approach capacity. It should be noted that no PACT Charter School site-generated traffic was assigned to the westbound Alpine Drive approach. The future conversion of Armstrong Boulevard/Alpine Drive to a single-lane roundabout will improve the operations and all approaches will operate at a LOS A during the peak hours. 11. Results of the combined Sunday a.m. church peak hour traffic operations analysis indicate that all study intersections are expected to operate at an acceptable overall LOS A during existing, 2028 No-Build and 2028 Build conditions for the Sunday a.m. peak hour under existing traffic control and intersection geometrics. No significant queuing or delay issues were identified in this analysis. 12. Vehicular access to/from the proposed site is planned at two locations on 161 st Street: a primary (east) site access (serves bus entry,pick-up/drop-off and staff traffic) approximately 600 feet west of Variolite Street and a secondary (west) site access (serves bus exit, student driver traffic) approximately 1,150 feet west of Variolite Street. 13. The proposed site plan is generally well configured and based on field observations, engineering judgement and applicable standards, there is adequate sight distance at the proposed site access locations to clearly identify approaching vehicles. Consideration should be made to limit any sight distance impacts from future onsite structures,landscaping and signing.