2017-07-26-PBC-min - Laserfiche WebLink

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2. D&W update on Walsh Brothers At Schematic Design there were issues getting aligned with large budget variances between the Designers estimate and Walsh Brothers estimate which became a concern by the project team. Recently that concern was raised to Walsh Brothers to determine if this was a viable path forward with them on the team There was a meeting on the 20th at DiNisco's office where the issues were openly discussed and the team is confident that we can work together to solve the earlier issues in the next Design Development phase. The team agreed that we are moving into DD with Walsh Brothers. 3. DiNisco update on Green Engineer and Traditional Energy The PBC was forwarded a copy of the Green Engineers latest report which focused on evaluating the building Geothermal system and the overall energy consumption and cost compared to a traditional natural gas boiler and chiller system. The conclusion of this report indicates that the Geothermal system consumes more energy at todays' current electrical and natural gas rates, is not forecasted to result in any payback for the useful life of the building, and has an increased cost of more than $2 Million. With this new information, the PBC discussed many other beneficial uses for that level of "sustainable energy' investment in other places that actually have a positive impact on sustainable energy use. The PBC recommended that this report be circulated to the Lexington policy makers, School Committee and the Sustainable Lexington Committee for their review and action. It was noted that Geothermal decision has been made by the Lexington policy makers and they would need to change that decision for the project to proceed with conventional heating and cooling. The Designer was asked if there was time to switch HVAC generating systems and stay on schedule, to which they stated that the decision would need to be made in the next 2 or 3 weeks to stay on track. The Chair stated that the PBC had asked for this evaluation from the Designers' consultant, the Green Engineer. This report from the Green Engineer does not support the use of a Geothermal system and therefore the town has reason to review this information again. The PBC asked the Public Facilities Department to forward this report to the Sustainable Lexington Committee for their comments, and then to the Lexington policy makers and School Committee for their reaction to this new information which potentially could be a decision to eliminate the Geothermal system from the project. The PBC stressed that this review must be conducted quickly as after 3 weeks there could be schedule impacts to the design and project schedule. Several other PBC discussions focused on the impact of changing systems in terms of space in the building for NG boilers, roof space for equipment, schedule impacts in construction which would be explored in depth upon receiving a different direction form the Town. 4. DiNisco review of Design Development Schedule and input opportunities DiNisco Design presented the Design Development updates via the attached handout: (summary of the handout below) i. August 16 — Early Release Packages and site logistics ii. September 6 — Site plan iii. September 20 — Interior & exterior finishes: review key spaces- caf/stage, library, lobby iv. October 4 — IT & security v. October 18 — LEED & Sustainability vi. November 1 — MEP & Systems integration Hastings portion of the meeting ended at 7:40PM