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71-3 Selectmen's Meeting— September 11, 2017 Mr. Pato asked if Sustainable Lexington has been part of the integrated building design process. He asked if building resilience has been considered and whether there is battery storage capacity. He noted that an early December bid timing for the temporary location is somewhat premature. He requested feedback from Sustainable Lexington from this point forward. Mr. Goddard said Mr. Sandeen of the Sustainable Lexington Committee has fielded questions as they have arisen. Mr. McElravy said the only area of the permanent building he has concerns about exceeding 600 parts per million CO2 is the training room. There is enough room for solar on the roof for both power generation and hot water. Rain gardens are planned along the west side of the building as part of the stormwater management system. Because the Fire Station is a public safety building, higher standards of resiliency will be met, such as power back-up. Battery storage is being considered and space has been allocated, although the team is not yet sure what its recommendation will be. Energy cost assumptions are .15 cents per kWh for electricity and 1.50 with CCS for natural gas. Mr. Lucente asked why the permanent building is not positioned closer to Bedford Street. He asked what the thinking is behind having four vehicle bays and how the square footage cost of $742 compares to project costs for other regional fire stations. Mr. Lucente is worried that the hazmat abatement estimate is not sufficient. Mr. McElravy said the practice is to design to accommodate the full length of the fire apparatus within the front apron of the building. A drive-thru design would need the same apron space behind as in front. Chief Wilson said the response standard to send four emergency vehicles simultaneously, leading to the four-bay design. Mr. McElravy admitted the square footage cost is "on the high side" but some differentiating factors are: better sustainability; hazardous material and environmental abatement costs; demolition; traffic work. Additionally, the region is in a construction escalation period. Based on environmental testing done at 45 Bedford Street, the environmental engineer calculated the cost of removing all the soil from the site, providing a cushion to cover a worst-case hazmat scenario. Dick Friedson, Design Advisory Committee, asked what materials the building would be constructed with. He asked if the cost has been benchmarked because the hard cost of$650/SF seems extremely high for an institutional/public project. Mr. Friedson asked if the roof will cast a shadow on the photovoltaic panels for part of the day. He highly recommended the project be identified as a 149A so a construction manager is hired to control costs. He asked the Board of Selectmen to consider allowing the Design Advisory Committee to review the project. Mr. McElravy said the building will have a steel-frame and the apparatus bays and support facilities will have a masonry back-up to the brick; the living quarters and administrative offices will have metal stud back-up to the brick. Mr. Bride said the solar study has not yet been done but with new inverter technologies, panels that receive shade can be isolated. If necessary, the panels can be placed on the upper roof but the team is worried about aesthetics. Mr. McElravy said the cost estimates are more generous now than they will be in later phases. He agreed to conduct a benchmark exercise against other recent fire station projects, adjusted for location and date, although he knows of recent projects that have come in at$450/SF.