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04-22-24-WS
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04-22-24-WS
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1. Introduction <br />The Twin Cities Army Ammunition Plant (TCAAP) Alternative Urban Areawide Review (AUAR) <br />study area is 429 acres located within the broader TCAAP site in Arden Hills. Ramsey County <br />purchased 427 acres of the site in 2013, and Ramsey County Parks & Recreation owns the <br />remaining 2 acres. The AUAR study area is bounded by County State Aid Highway (CSAH) <br />96 on the south, by US Highway 10 and Interstate 35W (1-35W) on the west, by State of <br />Minnesota property on the north, and by the National Guard's Arden Hills Army Training Site <br />(AHATS) property on the east (see Figure 1). <br />As the Responsible Governmental Unit (RGU), the City of Arden Hills adopted the TCAAP <br />Final AUAR and Mitigation Plan on July 28, 2014. Pursuant to Minnesota Rules, part 4410.3610, <br />subpart 7, an AUAR and plan for mitigation must be revised every five years until all <br />development in the study area has received final approval. The City of Arden Hills adopted <br />an AUAR Update on August 26, 2019. Since the study area has not been fully developed, <br />the purpose of this document is to provide another update to the TCAAP AUAR pursuant to <br />Minnesota Rules. <br />This report is intended to serve as an update to the 2014 AUAR and 2019 AUAR Update and <br />includes information on development to date, an update to the environmental analysis <br />where necessary, and a review of mitigation measures. <br />2. Existing Conditions <br />No residential, retail, or commercial development has occurred within the AUAR study area. <br />Since the AUAR was published in 2014, the following environmental remediafion work and <br />adjacent infrastructure improvement projects were completed and were documented in <br />the 2019 AUAR Update: <br />• 2015: <br />o Demolition and remediafion within the AUAR study area was completed. <br />o The new interchange at 1-35W and CSAH 96 was opened to traffic, including <br />a new bridge with accommodations for pedestrians and bicycles. <br />• 2016: <br />o Meanders were reintroduced within a portion of Rice Creek between County <br />Road I and County Road H to facilitate the reconstruction of the County <br />Road H and 1-35W interchange. The new creek alignment was evaluated in a <br />separate Environmental Assessment Worksheet completed by Ramsey <br />County. <br />• 2017: <br />o Construction of the County Road H and 1-35W interchange was completed. <br />County Road H now includes a new wider bridge over 1-35W with two traffic <br />lanes in each direction and a regional trail for bicycles and pedestrians. An <br />off -ramp from 1-35W northbound directly to County Road H was constructed. <br />The US Highway 10 westbound ramp to 1-35W northbound was reconstructed <br />TCAAP AUAR Update <br />April 2024 <br />
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