ID#2389 made on
EAp1 - Fundamental commissioning of the building energy systems
LEED BD+C: New Construction, LEED ID+C: Commercial Interiors, LEED BD+C: Core and Shell, LEED BD+C: Schools
Our client is a non-profit trade association which has leased space in a commercial office building in Washington, DC for 35 years. As part of an additional 10-year lease renewal and expansion, their...
Our client is a non-profit trade association which has leased space in a commercial office building in Washington, DC for 35 years. As part of an additional 10-year lease renewal and expansion, their interior space has been undergoing renovation. Upgrades to 124,000 of the 141, 000 square feet that the tenant occupies were completed in 2006 using a green approach. 10,000 square feet is currently being constructed, and 7,000 square feet is currently in design. The tenant occupies approximately 55% of the building in which they are located. Since the renovation began, the association has come to recognize LEED as an important performance benchmark of green building quality. The association is pursuing certification for its space in order to demonstrate the value of LEED CI certification to its employees and to educate its approximately 8000 corporate member organizations nationwide about LEED. The association's hope is to certify all 141,000 square feet of the space that they occupy. The association could limit the LEED CI site boundary to the 10,000 square feet that is currently under construction and the 7,000 square feet in which construction has not yet begun, and meet all LEED CI prerequisites and sufficient credit points to certify that portion of their space at a Silver or Gold level. They are interested, however, to undergo the additional effort and expense associated with including the 124,000 square feet of space that was renovated in earlier phase of renovation. We have confirmed that sufficient credit points could be documented for the whole space to be eligible for certification, however, the issue of how the EAp1 Fundamental Building Systems Commissioning prerequisite would need to be addressed. Alternatively we considered working with the association to pursue LEED OM for their entire space, however, LEED OM presents its own set of challenging issues given its current whole building approach and the fact that the association does not have direct control over the base building components or the activities of other building tenants. In order to include the previous phase of interior renovation in the LEED CI site boundary, we propose adapting LEED OM EAc1 requirements for commissioning the energy related systems in the tenant's scope whereby we would: 1. Develop a retro-commissioning, recommissioning or ongoing commissioning plan for the tenant's scope energy related systems, including the heating, ventilating, air conditioning and refrigeration (HVAC&R) systems and associated controls, lighting controls, including daylighting, domestic hot water systems, and renewable energy systems. 2. Conduct the investigation and analysis phase. Document the breakdown of energy use in the tenant space. 3. List the operating problems that affect occupants' comfort and energy use, and develop potential operational changes that will solve them. 4. List the identified capital improvements that will provide cost-effective energy savings and document the cost-benefit analysis associated with each. Please let us know if this would be an acceptable alternate approach to meeting the LEED CI EAp1 Fundamental Commissioning prerequisite for the phases of the renovation already completed. The current and future phases of the project would follow the standard LEED CI EAp1 requirements.
The applicant is requesting approval for commissioning of spaces that have both begun construction and have completed the construction phase. Commissioning for portions of the building that have begun construction (i.e., 10,000 square feet) are eligible to achieve certification for EAp1 per a LEED-NC v2.2 CIR dated 9/18/2007 and a LEED-NC v2.1 CIR dated 2/5/2004. Projects that have already been completed, however, are ineligible to achieve LEED certification because the fundamental commissioning requirements in EAp1 were not addressed during the project design or construction phase. For portions of the building that have not been installed, the project team should develop Owners Project Requirements (OPR) and Basis of Design (BOD) documents as outlined in the LEED-CI v2.0 Reference Guide. Refer the CIR dated 9/18/2007 for additional information. All of the additional commissioning requirements outlined in the LEED-CI v2.0 Reference Guide must be satisfied. For portions of the building for which construction has been partially completed, the CxA must review not only the construction/installation of the commissioned systems but also whether the systems satisfy the design intent. Refer to the CIR dated 2/5/2004 for additional information regarding commissioning of partially installed systems and commissioning requirements. While the project team should be commended for the sustainable design practices implemented for portions of the building that have completed construction, these spaces are not eligible to achieve certification for LEED-CI. As identified in the request above, the project team should consider certifying completed portions of the building using LEED-EB. The owner may be able to convince the building association and/or other tenants to consider certifying the entire building using LEED-EB. Applicable Internationally.
Related Addenda (Corrections & Interpretations)