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_____________________________________________________________________________________________ City of Arden Hills Planning Commission Meeting for September 6, 2017 P:\Planning\Planning Cases\2017\PC 17-023 - Master and Final PUD - Marriot Springhill Suites - 3920 Northwoods Drive\Memos_Reports_17-023 Page 5 of 15 The Zoning Code requires that accessory structures in the B-3 District be setback 10 feet from all property lines. The trash enclosure would be setback approximately 5 feet from the northern property line along Interstate 694. B. Landscaping and Tree Preservation – Section 1325.05 Subd. 1 and 1325.055 Minimum Caliper Inches and Tree Ratio – Flexibility Requested The Zoning Code requires a minimum number of new tree plantings based on the gross square footage of the building. The minimum caliper inch requirement is determined by dividing the gross square footage by 320. Given the proposed square footage of 79,241 square feet, 247.6 caliper inches of tree plantings would be required. Additionally, the Tree Preservation Plan indicates that 192.8 caliper inches of significant trees will be removed. The mitigation requirement for the removal is 85.7 caliper inches. Between the new tree plantings and the mitigation requirements, a total of 333.3 caliper inches are required. The Landscape Plan shows 58 new trees totaling 141 caliper inches. The following table outlines these numbers. Caliper Inches Number of Trees Required Minimum Caliper Inches 247.6 -- Proposed Significant Tree Removal 192.8 17 Mitigation Requirement 85.7 -- Total New Tree Plantings 333.3 -- Proposed Tree Plantings 141 58 The Zoning Code requires that the minimum total caliper inches include a certain percentage of trees in various size ranges based on the building height in stories. The building is five-stories in height and 20 percent of the new trees would need to be 2.0” – 3.0” in size, 50 percent 3.5” – 4.0”, and 20 percent 4.5” – 6.0”. The landscape plan indicates that 8 trees would be 2.0” in size and 50 trees would be 2.5” in size. The applicant has requested flexibility though he PUD process for a reduction in the required minimum caliper inches of new tree plantings given the limited space to install new trees. The applicant has noted that they will seek larger sized trees at the time of planting to help address the caliper inch deficiency. Trees Along Street Frontage – Meets Requirements The Zoning Code requires that a minimum of one tree be planted along the right-of-way for every 40 feet of street frontage. The property has approximately 135 feet of frontage along Northwoods Drive and four trees would be required. The landscape plan shows four existing or new tree plantings along Northwoods Drive.