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ARDEN HILLS CITY COUNCIL WORK SESSION—APRIL 22, 2024 2 Rachel Haase, Kimley Horn, provided the Council with a summary on the draft TCAAP AUAR. She explained an AUAR was a hybrid of an environmental assessment worksheet and environmental impact statement. She stated what makes an AUAR was that an AUAR evaluates development scenarios versus a specific development proposal. She reported an AUAR was a planning tool that could help the City understand how different developmental scenarios will affect the environment of the community so the City can identify potential impacts and mitigation strategies. She explained AUAR's must be completed every five years until all development in the area has been approved. She provided an overview of the historical AUAR's which were completed in 2014 and 2019. She noted the study covered five major intersections which included Mounds View Boulevard and County Road H, CSAH 96 and US Highway 10, CSAH 96 and, Northern Heights, County Road H and 1-35W SB ramp and County Road H & I-35W NB ramp. She reported the AUAR evaluated a variation of the maximum development scenario with a discount retail superstore. Ms. Haase commented on the differences between the traffic analyses between the 2024 AUAR and the County's traffic study. She explained different intersections were studied and the studies had different horizon years (2030 versus 2040). She reported overall, the two traffic analyses' findings were consistent. The tripgeneration results were reviewed with the Council. Councilmember Holden asked if the trip generation numbers included the big box retail. Jacob Rojer, Kimley Horn, stated this was included in a separate scenario and would bring the maximum daily trips up to 50,000. Ms. Haase and Mr. Rojer stated this information was not in the slide but it was included in the report provided in the packet. Ms. Haase reviewed the capacity analysis findings with the Council, noting for context that Level E means that an intersection is operating at capacity. She reported Mounds View Boulevard and County Road H would operate at Level E during the PM peak hour under both development scenarios. She explained all other intersections that were evaluated would operate at Level C or better under both development scenarios, including the maximum development scenario with the discount retail superstore. Mayor Grant asked if there was a concern with any of the turning movements that were rated an F. Mr. Rojer reported a couple of the turning movements were considered "minor movements" and had a lower rating, but the overall intersection as a whole would operate properly. He stated with only one movement at a Level F, he would not be proposing mitigation measures. Councilmember Monson stated she remembered talking about one location and asked if it was the Ramsey County traffic study presentation that cited that one left hand turn had an F rating. She clarified that in some of the referenced intersections there may be one turn lane that hits an F in the peak am or pm and that will be in the AUAR report. She wanted to confirm this information would be included in order to help understand the full impact of the Level F movement. Mr. Rojer indicated this would be identified within the AUAR.