05-19-2009 - Laserfiche WebLink

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calculated that the existing ground floor area of all structures in the PRD is 18%. With the proposed 1,200 SF expansion, the total ground floor area of the entire PRD would remain at 18%. These number are as follows: Existing: 124,441 SF (ground floor area)/682,061 SF (lot area) = 18.2% Proposed: 125,641 SF (ground floor area)/682,061 SF (lot area) = 18.4% Staff finds the proposed expansion to remain in compliance with ground floor area limitation of Section 7-060 (6). Exterior Building Materials The proposed addition will be constructed with exterior materials that match the existing building. Those materials consist of grey wood lap siding, painted hardboard panels, and teal colored flashing and accent trim. Public Works/Engineering As part of the overall project, the applicant is adding approximately 300 SF of additional hard surface. This additional hard surface requires that the applicant provide for on-site treatment. As shown on Proposed Drainage Conditions Plan and the Grading & Erosion Control Plan, the applicant has proposed as expansion to the existing infiltration basin. This expansion occurs at the southeast corner of the existing infiltration area located at the northwest corner of the site. The total area of the expansion is 149 CF. The applicant has submitted an application to the Rice Creek Watershed District, who will consider the request at a meeting to be held on May 27th The City Engineer reviewed the proposed civil plans and finds them acceptable. Mechanical Concerns As a result of the neighborhood meeting, concerns were expressed regarding the amount of noise generated by the mechanical units on site in the courtyard area of the existing building. There are numerous units, however staff observed that at least two seem to generate the most amount of noise: 1) a condenser unit to the north of the small kitchen bump-out (labeled ACC-3), and 2) a unit that vents out the western wall of the small kitchen bump-out (labeled Magi-Pak). There are three other mechanical units within this courtyard area. The applicant has submitted a plan that includes relocation, removal, or replacement of all the units. This plan indicates that the larger unit to the north of the kitchen bump-out (ACC-3) and the unit that vents out the western wall of the kitchen bump-out (Magic-Pak) will be removed. However, two smaller units will be placed to the north of the kitchen bump-out (ACC-6 &ACC- 4) and another unit will be relocated farther west (ACC-1). The applicant's written email that accompanied the Mechanical Plan indicates the new mechanical equipment will be quieter and noise will be reduced by half. The Mechanical Plan also indicates a 5' high solid screen wall will be built to block noise generated by the units labeled (ACC-6 &ACC-4). While staff is encouraged by the removal of four of the existing units,three units will still remain in the courtyard area having the potential to create noise deemed unreasonable by the neighbors. Staff would recommend the applicant be advised to relocate all mechanical equipment to either the east end of the building or to the underground parking garage. The Commission should discuss this issue to determine what is appropriate.