12-03-25 PC Packet - Laserfiche WebLink

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Page 2 of 11 At the January 25, 2021, City Council meeting, the PUD Amendment for the Building 14 addition was approved with 15 conditions. Conditions of approval included: 12. Once the Project is completed and the equipment is operational, Applicant must conduct a noise study at the time of completion and occupancy permit and six months following Project completion and occupancy to ensure the facility does not exceed maximum notice standards. If necessary, Applicant will take steps to correct any deficiencies. 13. Applicant will complete yearly noise studies on Building 14 and provide the results and findings to the city and take steps to correct any deficiencies that are identified by the studies. Building permits for the addition were issued on September 28, 2021, and the temporary certificate of occupancy was issued on December 27, 2022, subject to the city receiving the required noise study once the building was operational. The first noise study was conducted in 2023. The results submitted to the city found that the noise from the facility exceeded the maximum noise standards, and the Applicant was required to take corrective action. The source of the noise was an existing air compressor and not part of the building addition. The Applicant constructed a mechanical screen wall at the northwest corner of Building 14 in 2024 and two additional noise studies in 2024 verified noise levels from the facility are within the permitted MPCA noise standards. A certificate of occupancy was issued for Building 14 on September 18, 2025, and the Applicant remains compliant with the conditions of approval for the PUD Amendment. The July 2025 noise study submitted by the Applicant is included as Attachment F and demonstrates compliant noise levels. 2. Overview of Request Boston Scientific Corporation (BSC) applied for site plan review to construct a noise barrier wall along a portion of the northwest corner of the Arden Hills corporate campus. The stated purpose of the wall is to further reduce the level of noise generated from Building 14 that reaches neighboring residential properties. While study documents submitted by BSC demonstrate the operation meets local noise compliance requirements, the noise barrier wall is intended to further mitigate sound from daily operational noise including loading dock-related noise. The proposed noise barrier wall is approximately 576 lineal feet with a varied height of 8 feet to 21 feet to accommodate existing grade changes. The proposed north leg of the wall runs 200 feet from east to west, and the southwest leg runs 376 feet from north to south. The proposed materials are precast concrete and pretreated wood. The proposed wall location is offset 17 feet from the nearest property line which is shared with City-owned property where a trail is located. To construct the wall, the Applicant proposes to remove significant trees in the area and make landscaping improvements on both sides of the proposed wall.