HomeMy WebLinkAbout2019-05-02-PBC-min 1775R" TOWN OF LEXINGTON
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APRIL19TIl Co-Chairman: Jon Himmel &Co-Chairman Dick Perry
�xI"�'`� Philip Coleman, Charles Favazzo, Carl Oldenburg, Peter Johnson, Howard Hobbs
Project Specific Members
Clarke&Diamond Schools Hastings Elementary Fire Station Visitors Center LCP LCC
Margaret Coppe Curt Barrentine Robert Cunha Joel Berman Teresa Hank
Edwin Goodell Andrew Clarke Joseph Sirkovich Peter Kelly Wilson Manz
May 02, 2019
Members Present: Jon Himmel, Dick Perry, Philip Coleman, Charles Favazzo, Peter Johnson
DPF Staff: Mike Cronin/Director of Public Facilities, Mark Barrett, Ann Marie Ponzini
Board of Selectman Representative (BOS): Jill Hai, Mark Sandeen
Capital Expenditures (CEC): David Kanter Appropriation Committee (AP): Glenn Parker
Sustainable Lexington Committee: Dan Voss, Celis Brisbin
Lexington Police Department (PD): Chief Mark Corr
The Green Engineer (TGE) and Tecton Architects
6:10 PM- The meeting was called to order— 201 Bedford Street, Cafeteria. This meeting is being
recorded by LexMedia.
1. Police Promect Integrated Design Discussion — Jon Himmel (PBC)
Jon reviewed tonight's agenda and introductions were made. Chris Schaffner of The Green
Engineer was introduced as the consultant to the town assisting in the Police Project Integrated
Design Discussion.
Chris S. understands his role is to be a facilitator to the Police Station Project, and the Design
Process.
General Project Information
• Project Schedule: The final project schedule is still in progress. The team discussed adjusting the
schedule to better support integration of sustainability goals. The schedule may follow the timeline
below:
o SD Phase: May -July 2019
o DD Phase: August - October 2019
o CD Phase: End of October 2019 - mid February 2020
o Construction: July 2020 - September 2021
• The new Lexington Police Station will replace the existing building and may include the new IT Data
Center. The project team is currently considering several designs for the new building. The building
will be two-stories, the area will be approximately 32,000-35,000 sf.
• The primary project goals pertain to security, energy, resilience, and indoor environmental quality.
• The new building's exterior will keep the historical fagade of the existing building. The project will
either reuse the existing fagade, or a new identical one will be constructed.
201 BEDFORD STREET• LEXINGTON, MASSACHUSETTS 02420
• The new building will serve as an emergency facility for the Town and will be resilient to natural
disasters and other threats.
Lexington Sustainable Design Goals and LEED Credit Status
• The project will be designed with respect to the sustainable design goals established by the Town of
Lexington. The meeting referred to the LEEDv4 for New Construction rating system modified with
Lexington specific requirements (L Lex 1-7).
• The LEEDv4 rating system acted as a framework to guide design decisions but the project is not
pursuing formal LEED certification.
• Below please find a summary of significant discussions regarding specific sustainability goals. Some
of these items may require follow up from various team members.
ENERGY AND ATMOSPHERE
L Lex 1 and LEED EAp1 and EAc1: Fundamental and Enhanced Commissioning and Verification
• The project team intends to conduct Fundamental Commissioning and HVAC Commissioning in
accordance with LEEDv4 criteria. Building Envelope Commissioning was discussed as a possibility.
Monitoring based commissioning was discussed in order to monitor and track energy performance
over the operational life of the building.
LEED EAp2 and EAc2 Minimum / Optimize Energy Performance
• The Lexington I BDP draft requires new buildings to reduce energy use by at least 30% over an
ASHRAE 90.1 baseline (current or better). The building's HVAC system will include VRF's with air-
source heat pumps. Energy recovery ventilation and demand-controlled ventilation in applicable
areas, such as the garage, will be utilized. The system will be mostly electric.
• MEP to conduct an early "Shoe-Box" energy model in order to inform design decisions in SD and
work toward savings goals. The Whole Building Energy Model will be conducted in the DD phase
and will include project specific inputs.
• Energy targets for the project were discussed. Energy Star Target Finder shows an EUI of 67
kbtu/sf/yr (site energy) for an "average" police station in Lexington. Meeting the Architecture 2030
goal of a 70% energy reduction would require an EUI of 20 kbtu/sf/yr.
LEED EAp3 and EAc3 Building Level and Advanced Energy Meterinq
• The project team intends to follow the LEEDv4 criteria for installing whole building energy meters as
well as advanced energy meters in order to track energy performance through a building automation
system.
LEED EAc5: Renewable Energy Production
• The project intends to utilize an onsite renewable energy system to offset operating energy use by
20%. This may be supplemented with offsite renewable energy production. Renewable energy
system may be a solar canopy in the parking area. Once early energy model is complete the team
will conduct an energy storage analysis to determine storage needs.
PBC Meeting 05.02.19 2
• 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
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The project may not achieve the LEED criteria for Daylight but will the design will utilize daylight
wherever possible to reduce lighting loads and improve energy performance.
REGIONAL PRIORITY
L Lex 7: Resilience
The new Police Station will serve as an emergency facility and will be able to withstand a Category 4
hurricane and as well as other threats. The building will be able to provide shelter and refuge to
citizens in case of an emergency.
The Lexington I BDP prioritized resilience in all new construction. The team discussed the various
ways resilience should be considered. Examples included extreme weather events and increased
temperatures and humidity due to climate change. Back-up generators will be sized to meet the
energy needs of the building.
Jon H. inquired about items on the Policy that we want to deal with related to the project. Schedule
states starting schematics; will there be time to review.
Jeff stated he is expecting to meet some of these goals. Extensive dialog needed, massing of
building and solar discussions. Cannot wait too long if we want to keep to the 3 month schedule.
Mike C. stated maybe 3 months isn't the right amount of time for schematic design. Maybe more
time is needed. Jeff was in agreement with this.
Mike C. stated communication needs to happen both ways. Questions can be sent to Mike who will
relay them to the design team.
It was stated that all understand they need to keep their boards/committees informed and should
meet on a monthly basis.
Chris S. thanked all tonight in attendance.
Motion to adjourn was made and seconded: Meeting adjourned at 8:45pm.
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