2019-05-02-PBC-min - Laserfiche WebLink

Browse Search

• MA General Laws Chapter 149 requires that Life Cycle Costing (LCC) be completed as part of the design of energy systems in public projects in MA. The LCC can only be done once multiple design options are available to compare. • Action item: TGE to assist with LCC tasks once options are available and integrate the Owner and Architect perspectives. L Lex 2: Net Zero Energy • The team discussed integrating net zero energy discussions continuously throughout the design process to ensure that all potential net zero energy possibilities are explored. Achieving net zero energy will not be a requirement however establishing a plan to check-in with net zero energy performance throughout the design will improve energy performance. L Lex 3: All Electric, Zero Emissions on Site • The HVAC system will be mostly electric. In the event of a power outage, emergency generators will be utilized to maintain all functioning of the building. The team discussed that the emergency generators will need to be very large to achieve this. The Police Chief pointed out that there cannot be a "lag time" between a power outage and when the generators turn on and restore electrical power. INDOOR ENVIRONMENTAL QUALITY L Lex 4: Enhanced Filtration • The project to prioritize the health and safety of building occupants by installing MERV 13-16 air filters in all systems supplying outdoor air to the building. The Police Chief pointed out the potential threats relating to air quality and stressed the importance of the system being able to respond quickly to compromised air quality. L Lex 5: Indoor CO2 Monitoring: The design team discussed the goal of including CO2 monitoring such that CO2 levels do not exceed 600 ppm. L Lex 6: Toxics The Lexington Sustainability Goals include selecting materials that minimize impact to the health and wellbeing of occupants. The project team referred to the "red list" of materials published by the Lexington Board of Health that lists products with unfavorable impacts to the environment and building occupants. The team discussed that many of the items may be unavoidable, in which case the team will do their best to research alternatives and only use "red list" items when no sensible alternatives are available. o Action item: When developing the project timeline, the team should specify a time to do a full evaluation of building materials. LEED EQc2: Low Emitting Materials The project team prioritizes the health and safety of the building occupants and will strive to minimize VOC's and emissions within the building by diligently selecting low emitting paints and coatings, adhesives and sealants, flooring, furniture, and other interior building components. LEED EQc5: Thermal Comfort VRF systems usually enable building occupants to have thermal controls in multi-occupant and individual occupant spaces. The team is considering installing operable windows. This will help with emergency ventilation but may pose safety risks. LEED EQc6: Daylight PBC Meeting 05.02.19 3