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Attachment 4 May 25, 2023 To:James Homolka, Ramsey County Property Management From: VernonSwing, PE Re:Traffic Analysis – PO PRMG38457 - Ramsey County Environmental Service Center, Roseville, MN Per your request, SSTS LLC has conducted a traffic analysis for the proposed Ramsey County Environmental Service Center development (referred to as the Proposed Project). The Proposed Project will add hazardous household waste disposal/recyclingfacilities to the existing organic waste/compost recycling uses on the approximate 15-acresite in Roseville, Ramsey Co, MN. The Proposed Project site is located to the north of Larpenteur Ave W and to the east of Kent Street and will be accessed via three proposed driveways to Kent Street. Figure 1, Vicinity Mapdepicts the locationand Figure 2, Site Plan, illustrates the site layout and access locations. This memorandum documents the existing AM, PM,and Saturday Midday peak hour traffic conditions, forecasts the 2025 traffic conditions without the development, forecasts the trip generation potential for the proposed land use and distributes those trips based on existing traffic patterns in the area. Further, results from the trafficoperational analysis with and without the Proposed Project are summarized. Also, a review ofon-site circulation and vehicle stackingis included. The focus of the traffic study is the traffic operations at the following intersections which provide access to the regional roadway network and access to the site: Larpenteur Ave W & Kent St Kent St & South Site Access Kent St & Middle Site Access Kent St & North Site Access ExistingConditions As mentioned, the study area focuses on the intersections listed above. The existing conditions of the roadways and intersection providing direct and indirect access to the Proposed Project were documented and are noted in Table 1. Additionally, Figure 3 shows the existing lane geometry and traffic control at the study intersections. Table 1. Study Roadway Characteristics RoadwayFunctional ClassTypical SectionPosted SpeedAADT (Year) Larpenteur Ave WA-minor Augmentor3-Lane Undivided Urban40 mph13,300 (2018) (MnDOT) Kent StreetLocal Street2-Lane Undivided Urban30 mphN/A Note, additional counts for Larpenteur Ave W are available, however, they were counted during COVID-19and are likely less than current condtions. ExistingTrafficVolumes AM, PM,and Saturday Middaypeak hour turning movement counts were conducted at thestudy area intersections. Thefollowing notes the peak hour timeframes: