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| LEED Silver minimum; striving for Gold | | The City Hall will be one of Kenmore's first projects developed under the US Green Building Council's LEED-certification standards. The new Kenmore City Hall will set the bar for the future development of the city's downtown and embody the community's interest in sustainability development. The team will strive to achieve Gold within the current project budgets shown. |
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| Stormwater Management | | The project includes rain gardens, a vegetative roof, permeable pavings to manage and minimize stormwater run-off, increase on-site filtration, and reducing impervious surface. Increasing on-site filtration can help remove pollutants from stormwater runoff as well as reduce the demands on the city's stormwater infrastructure. |
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| Minimize Impervious Surface | | Over 75% of the code required parking stalls will be in a parking structure below the building rather than on the surface. This strategy serves the intent of Kenmore's Downtown Plan, and reduces the amount of impervious surface on the site while maximizing the future potential for development of the site. The site will also be developed with areas of fine grain gravels (called DG or Decomposite Granite) which is pervious, doesn't require irrigation and is also wheelchair accessible, giving the city the option to use the space for events such as festivals and farmer markets. |
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| Permeable Pavement | | Using permeable pavement at surface parking lots helps to recharge groundwater, and minimize stormwater runoff and onsite detention requirements. |
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| Natural daylighting | | To reduce energy demands related to lighting, the design will strive to maximize natural daylight with generous and thoughtfully located windows and skylights. The team is working with the Daylighting Lab in Seattle to help in this analysis. Extended canopies and sunscreens will help control the sunlight to prevent direct solar heat gain from reaching the offices and meeting rooms during the summer months, reducing energy costs for air conditioning with providing a pedestrian amenity along 68th Avenue NE. |
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| Low off-gassing (VOC) materials | | Low off-gassing (VOC) materials such as carpets, paints, sealants and other interior finishes will be used. Increased indoor air quality is good for the health of staff and the users of the building at no additional costs to the project |
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| Energy-efficient lighting & controls | | Lighting will be set on occupancy sensors to turn off lights when spaces are not occupied. Daylight sensors will turn off or dim lights when there is adequate daylight to illuminate rooms. Combined with energy efficient lighting, these measures will lower energy costs. |
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| Natural Ventilation and Energy Efficient HVAC | | Mixed-mode (natural ventilation shuts-off mechanical cooling) and HVAC system with a raised floor distribution will provide an energy efficient mechanical system at the administration wing. The raise floor allows flexibility of space configuration over time and increases indoor air quality. Indicator lights tied to the mechanical system controls, will let staff know when exterior conditions are right to open windows and the air conditioning will be turned off. The use of natural ventilation will lower energy costs associated with air conditioning. Operable windows and adjustable air diffusers in raised floor system also give staff control of their environment. |
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| Regional and recycled materials | | Materials will meet LEED benchmarks for recycled content and regional sources. Supports local and regional businesses while minimizing the costs and pollution of the transport of materials. |
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| Water efficient plumbing fixtures | | Fixtures such as low flow urinals and dual flush toilets will help minimizes water usage and utility costs |
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| Reduced construction waste | | Contractor will aim to divert a minimum of 75% of construction waste from local land fills to be recycled. Reduces demand on regional land fills. |
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| Enhanced Commissioning | | An independent, third party commissioning agent helps ensure that the mechancial and lighting control design are properly implemented in the field. |
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| Additional LEED measures include reducing light pollution, reducing heat island effect (roof and non-roof), as well as providing a staff shower facility | | |
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| Photovoltaic Arrays / Solar Panels | | At the time of the project bid, the City will have the option to include 574sf of solar panels to provide 2.5% of the estimated energy use of the building (a LEED benchmark.) These panels would lower energy costs and increase energy independence given the potential for increased energy costs in the future. At the very least, the project will be designed to allow for the future installation of solar panels. |
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| Vegetated / Green Roof | | A green roof reduces the amount of stormwater run-off from the site, reduces the cooling costs, increases the longevity of the roof membrane and reduces heat island effect. This feature also provides visual interest on the bulding's "fifth façade" or roof, which will be visible from any futurer higher density developments. |
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| Green Power | | Up to two LEED points can be obtained if the City contracts with PSE to provide Green Power for the City Hall for at least two years. |
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| Green Housekeeping Plan | | The City can develop a plan to use green products to clean and maintain the City Hall facility. |
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| Measurement & Verification | | With additional equipment, the City can monitor the buildings energy consumption, provides on-going accountability of energy performance and allow maintenance staff to more readily identify and pinpoint problems. |
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| Biodiesel fuel for the Generator | | Use of biodiesel as the fuel for the generator would provide a LEED Innovation Credit. |