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116-O. LEED EBOM/LEED CI comparison.pdfATTACHMENT 0 In an effort to provide more information on LEED for Existing Buildings: Operations and Maintenance (EBOM), the following is a description of the rating system, in what scenarios it is applicable, and how stringent it is as compared to LEED for Commercial Interiors (CI) in terms of two Tenant Improvement scenarios. LEED EBOM was designed to implement ongoing sustainable practices throughout the buildings operational life -cycle. The most notable difference in LEED EBOM as compared to the other rating systems is the processes of recertification. Recertification can happen as often as every year, but must be completed every five years. This process ensures that the building continually address building operations, processes, systems upgrades, minor space- use changes, and minor facility alterations or additions LEED EBOM is applicable to buildings new to LEED certification as well as buildings previously certified under LEED for New Construction, LEED for Schools, or LEED for Core & Shell. The following building types are applicable under the rating system: office, retail and services establishments, institutional building, and residential buildings of four or more habitable stories. It is a whole -building rating system where individual tenant spaces are not eligible. In comparing LEED EBOM to LEED Cl, the fundamental difference is that LEED EBOM requires an inventory of the whole building regardless of the project scope in order to assess and improve the performance while LEED Cl is contingent on the project scope of work. The following two scenarios outline this fundamental difference and how it affects the level of stringency of LEED EBOM as compared to LEED Cl. Scenario one is a TI project with a scope of work that does not address any of the energy systems and does not have any indoor plumbing fixtures or fittings within the tenant space. LEED Cl would not require any improvements to the existing energy or water use since the systems are not within the project scope and therefore not applicable to the requirement. The mechanical system requirements under Clare applicable and must meet the minimum ventilation requirements. LEED EBOM, however, will require an inventory and adjustment to all the systems since they are within the building. Under this scenario LEED EBOM is more stringent because all the systems within the building are being evaluated, modified and improved to the highest relevant standard required. Scenario two is a TI project where the scope of work does include the energy and water systems. In this scenario, LEED Cl is more stringent because energy and mechanical system needs to be consistent with or better than new construction standards, while water usage needs to be 20% better than a baseline case. Similar to scenario one, LEED EBOM requires that buildings function to the best of their existing capacity. Overall, LEED EBOM is more comprehensive in its approach to sustainability and in some scenarios can be more stringent in terms of meeting LEED requirements. It can be considered equally sufficient to other Rating Systems and a viable approach to sustainably within the Green Building Ordinance in that operations and maintenance is often more costly and harmful to the environment than new construction.