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ARDEN HILLS CITY COUNCIL—JANUARY 13, 2014 11 Boston Scientific will discontinue the use of three pieces of equipment (two vacuum pumps and an air compressor) in the existing mechanical room on the north side of Building 14. One piece of equipment (an air compressor)will be relocated and used in the new addition. Associate Planner Bachler explained that the single story addition would match the existing adjacent roofline at approximately 22 feet above grade. The building will be constructed of concrete masonry with steel joists and a deck roof structure. EIFS with color and reveal pattern to match the existing construction will be used as the principal exterior finish. The existing landscaped area where the addition will be constructed is turf grass. All areas disturbed by the construction will be restored to their natural condition. Two spruce trees equivalent to the City's caliper inch requirements will be planted in the vicinity of the addition near the western property line. Associate Planner Bachler reported that the campus Master Plan was originally approved in 2002. A total of 419,500 square feet of building space was proposed for Phase 1, which was scheduled to be completed in 2006. Due to the change in ownership from Guidant to Boston Scientific in 2006, as well as other market conditions, portions of Phase 1 have not been constructed. Two new buildings (L and K) and an addition to Building I were expected to be finished during Phase I. Of this additional building area, only Building L and the Building I addition have been built. Plans for Building K have not yet been submitted. The Master Plan requires a traffic study be completed at the end of Phase 1. Associate Planner Bachler reported that several amendments have been made to Phase 1 since 2002. The Building J addition was moved from Phase 2 to Phase 1 (PC 04-01); however, this addition has not been constructed. Two additions to Building N (14) were also approved for Phase 1 (PC 03-024 and PC 06-033), which were built and added 40,250 square feet to the campus. The City has approved 296,250 square feet of new space since the Master Plan was approved, of which 206,250 square feet have been constructed. Associate Planner Bachler explained that a full evaluation of the proposal was presented to the Planning Commission at their December 4, 2013,regular meeting. Associate Planner Bachler indicated that the Zoning Code does not include specific regulations regarding acceptable levels of noise. However, all properties in the City must meet the noise rules established by the State of Minnesota. The State sets noise limits by establishing "noise area classifications" based on the land use at the location of the person that hears the noise. The Minnesota Pollution Control Agency (MPCA) has been given statutory authority to enforce the State noise rules. It should be noted that the established State noise level standards preempt any local regulations. Associate Planner Bachler stated that Boston Scientific has retained ESI Engineering as an acoustical consultant for the project. The firm has measured existing conditions to document baseline noise levels. The survey results indicate that the noise from the existing mechanical equipment located in Building 14 meets the MPCA nighttime noise requirements. Associate Planner Bachler commented that Boston Scientific has taken several steps to ensure that noise from equipment in the proposed addition will meet MPCA noise requirements. The