HomeMy WebLinkAbout2019-02-08-PBC- min 1775TOWN OF LEXINGTON
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m_ Permanent Building Committee
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Z Permanent Members
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APRIL 19TH Chairman: Jon Himmel
INUSPeter Johnson Dick Perry, Carl Oldenburg, Philip Coleman Charles Favazzo Howard Hobbs
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Project Specific Members
Clarke&Diamond Schools Hastings Elementary Fire Station Visitors Center Pelham Road
Margaret Coppe Curt Barrentine Robert Cunha Joel Berman Hank Manz
Edwin Goodell Andrew Clarke Joseph Sirkovich Peter Kelly Teresa Wilson
February 08, 2018
Members Present: Jon Himmel, Charles Favazzo, Peter Johnson, Dick Perry, Philip Coleman, Carl
Oldenburg, Robert Cunha, Joseph Sirkovich, Teresa Wilson
Members Absent: Howard Hobbs, Joel Berman
Sustainable Lexington Committee: Mark Sandeen
DPF Staff: Mike Cronin/Director of Public Facilities, Mark Barrett
7:00 -The meeting was called to order— 201 Bedford St., Room 221
1. Fire Station Updates—Jeff McElravy& Matt Salad (Tecton Architects)
Jeff informed the committee the project is at LEED Silver and close to Gold, and walked thru the
sustainable highlights of the project, based upon the Lexington sustainable chart, for the purposes of
clarity the chart is attached to these minutes
• 30% over ASHREA 10.
• 28% over ASHREAE 13
• Diesel gas for generator
• EAc6 Refrigerant Management not possible.
EAc5 Renewable Energy Production is anticipated 74.7 kW.Anticipate 250 kWh are used per year.
Solar Thermal
• Using solar thermal system for hot water generation.
• We meet the Lexington Standard for R and U Values on walls, roof and windows.
Filtration
• Mery 13 filters in base Plans, can upgrade to Mery 16, except approx. 2500 added annual
operational cost and may reduce energy performance by 3.5%.
Increased ventilation rate in the training room should keep CO2 as close to 600/ppm as possible.
Discussed solar storage batteries. Batteries could be located in the storage location shown on the
site plan. Since the Fire Department is a level 1 building, it requires a diesel generator with
approximately a 2000 gallon tank, so it could run the required 72 hours. Generator size and peak
demand were discussed with Tecton. Tecton will follow up with additional information.
It was suggested that pin and sleeve be installed on the building so a mobile generator could be
used in case of further emergency. This could become a future code requirement.
201 BEDFORD STREET• LEXINGTON, MASSACHUSETTS 02420
2. Lexington Children's Place (LCP) Update Donna DiNisco (DiNisco Designs)
Donna discussed Solar Design, VE Design Update & Gas Heating Element for VRF. The SMART
Program is not finalized. Preliminary information shows:
• 52-65kW Building + 211 kW Canopy's = a Total of 281 kW in solar generation possible.
• Can also get incentives for battery storage. 25% - 65% storage capacity could last up to
4 hours.
• Extra energy generation from LCP could provide crediting on the bill.
• Solar energy credit could be transferred to another municipal building.
VE Items
• WF Beam changes are not turning out to be a savings.
• Review of the Curtain Wall reduction by 25% was achieved by using veneer masonry/metal
stud walls.
Lexington Goals
• 30% Energy Reduction over ASHRAE 90.1-2010
Increase mechanical ventilation up to 30% to reduce CO2 levels. Upgrade to MERV 16
Filters to improve filtration.
3. Visitors Center Update Don Mills (Mills Whitaker Architects), Chris Shaffner(The Green Engineer)
Chris presented the revised LEED Scorecard, showing an 18% savings against the baseline. Energy
use showed 33.3 kBTU/sf per Year.
• Demand Control Ventilation being looked at to allow ramping up when busy.
• Silver LEED still possible; 43-Yes, 14-Likely, 17-Maybe.
• Possible linkage to another project's solar credits could allow for energy use here.
General Business
Jon Himmel mentioned that the Committee formerly had a co-chair, who is no longer on the committee,
and that it would be good to instate a new co-chair to the committee. After some discussion Dick Perry
was asked and agreed to be considered and was then voted by those present unanimously to serve as
Co-Chair.
PBC Minutes for Dec. 14th, 2017, Dec. 21 th, 2017 and Jan. 11th, 2018 were reviewed.
Motion to approve PBC minutes for 12/14/17, 12/21/17 & 01/11/18.
Seconded —APPROVED.
Motion to adjourn was made and seconded: Meeting adjourned at 9:45pm.
PBC Meeting 02.08.18 2