Thursday, February 18, 2010
Wayland Town Building
School Committee Conference Room
Attendees
HSBC members: Lea Anderson, Jim Howard, Fred Knight, David Lash, Joe Lewin, Eric Sheffels, Jennifer Steel
Absent: Dianne Bladon, Josh Bekenstein, Brian Chase, Mary Lentz, Cindy Lombardo
HMFH team: Steve Millington, Seong Ahn, Maria Mulligan
KVA team: David Saindon, Frank Vanzler
Ex Officio members: Louis Jurist, John Moynihan
MEP consultants: Carlos DeSousa, Ed Galuska
Invited guests: NSTAR program manager: Mike Budlong: Liaison to Energy Initiatives Advisory Committee: Enrique de los Reyes
Call to order – HSBC Chairman, Lea Anderson, called the HSBC meeting to order at 7:10 p.m.
Administration
1. Project permitting update
Conservation Commission
á David Saindon reported that the Notice of Intent (NOI) was submitted to ConCom on Feb. 11 in anticipation of the Feb. 25 hearing. The project team will meet at 8:00 pm on Feb. 25 prior to attending the ConCom hearing at 8:30 pm.
á Brian Monahan is in the process of hiring a peer reviewer.
Building Department
á David reported that Jonathan Smith had met with Building Inspector, Dan Bennett, on Feb. 8 to discuss permitting procedures. Dan agreed to allow separate permitting applications for each of the four buildings (classroom, common, field house, and WWTP) and a separate permit for foundation and steel.
á A letter is being drafted by HMFH to be sent by the owner (Dr. Burton) describing the educational need for the fly space above the stage.
Board of Health
á A variance has been requested regarding the set back of the leaching fields for the WWTP. The septic field is 80 feet from the property line. 100 feet is standard. This will be presented at a joint hearing of the BoH and Planning Board on March 2 at 7:30 pm.
Planning Board
á An application for site plan approval was submitted on Feb. 12 to the Planning Board. This will be presented at the joint meeting on March 2 at 7:30 pm.
á Town Planner, Sarkis Sarkisian, is hiring a landscape designer to do a peer review.
2. CM Procurement
á David reported that the Selection Committee conducted interviews of the 10 pre-qualified firms (Gilbane, Bacon, Turner, Dimeo, Shawmut, Columbia, Lee Kennedy/J & J, Bond Brothers, Suffolk, Consigli) on Feb. 12 and Feb. 16. He noted that the candidate pool was strong. The Selection Committee deliberated and based on a scoring process selected Dimeo, Gilbane, Shawmut, and Turner as the finalists.
á Interviews of the short list of firms will take place on Tuesday, Feb. 23 from 6:00 to 9:00 pm. The entire HSBC will participate in this meeting, but the Selection Committee will make the final selection. The meeting begins at 5:30 pm in the Commons conference room at WHS.
3. WWTP site visit reminder – David reminded the group that a site visit to see a waste water treatment plant at 111 West St. in Wilmington is scheduled for Saturday morning, Feb. 20. Neighbors and committee members should plan to arrive between 9:00 and 9:30 am so that the tour can start promptly at 9:30.
Design Update
1. Energy review – Steven Millington introduced members of the design team and other attendees: Maria Mulligan and Seong Ahn from HMFH, Ed Galuska and Carlos DeSousa from GGD, Mike Budlong from NSTAR, and Enrique de los Reyes, Wayland resident, energy engineer and liaison to the Energy Initiatives Advisory Committee.
á Design Goals - Steven reviewed the design goals as follows:
a. Adopt the Massachusetts Collaborative for High Performance Schools (MA-CHPS) rating system to track goals.
b. Set energy performance goal for the project at 25% to 30% better than a design compliant to the base standard code. Set thermal performance of the building envelope (walls, glazing and roof) at 25% to 30% better than minimum code requirements. Design building envelope to control air filtration and roof surface to be a reflective white color.
c. Maximize day lighting (goal of 30 foot candles in perimeter spaces) and electric lighting effectiveness (goal of 0.8 watts per sf goal for overall interior lighting power density).
d. Design building mechanical ventilation systems for classrooms and all major assembly spaces with displacement ventilation limiting conventional air conditioning to administrative suite.
e. Design building mechanical systems for load reductions and to be Òright sizeÓ.
f. Test performance through energy modeling to analyze proposed energy efficiency measures over the life of the building.
g. Verify performance goals by commissioning the building.
h. Seek to maximize cost rebates from NSTAR and National Grid incentive programs.
á Building Envelope - Maria Mulligan presented a building envelope analysis:
o Codes are changing all the time. Base code is fairly new. There is a Mass. ÒstretchÓ code that is about 20% better than base. Our proposed design is approximately 25-30% better than base.
o Roof includes 5Ó thick polyisocyanuate insulation and white PVC membrane.
o Walls above and below grade include 2 ½Ò thick extruded polystyrene rigid insulation.
o Windows are thermally broken aluminum window frame with 1¼Ó thick heat mirror.
o Design uses best practices such as insulation on outside of studs.
o Design includes sunshade to prevent unwanted direct sunlight on south, east and west sides, as well as light shelf to help with daylighting.
Discussion followed:
o Is the cost benefit payback of this tight building envelope reflected in downsizing mechanicals? Ans. Mechanical systems are not infinitely scalable. They will be sized correctly. The savings is in operating costs.
o Were these assumptions around glazing in effect during pricing of schematic design? We should make sure HMFH and KVA are on the same page with this. Steve is confident this is all within schematic.
o HMFH is designing many other projects to this standard.
o Are there greener insulators? Ans. There is another insulation that is thicker, but it has cost consequences. Maria does not recommend spray foams.
o Sunshades add cost and are first things to go on V/E list. Consider using them on south side only. Analyze cost trade offs.
o Light shelves can be problematic when used for storage.
o Energy modeling will be done to analyze cost trade-offs. Steve said that GGD will do the modeling for MA-CHPS and Andelman Lelek will do the NSTAR modeling. We need to advance the design much further before doing the modeling.
o How quickly can NSTAR make a determination on incentives? Mike Budlong said that it would take about two weeks once Wayland submits the model and written narrative.
á HVAC and Electrical Energy Conservation – Ed Galuska reviewed the displacement ventilation system being planned for the WHS project:
o Displacement ventilation takes moisture out of the air, introduces it at floor level and vents it out at ceiling.
o Dry air draws moisture away from bodies.
o Traditional systems mix all the air in the room; displacement ventilation is more efficient.
o Conventional air conditioning is about 33% more expensive in construction cost and 30% more expensive to operate.
o With displacement ventilation systems, airborne contaminants are removed making it 40% cleaner and mold is no longer an issue because humidity is low.
o Ceiling height must be above 9 feet for displacement ventilation to work.
Discussion followed:
á Ed invited people to tour Bourne on Tuesday at 9 am. The system is working very well. In the first year of operation, minor adjustments were made to fine-tune the system.
á Eric reported that his office uses displacement ventilation and has cut energy consumption by 50%. There appear to be fewer colds and sick days.
á MSBA has become very interested in this system.
á WaylandÕs design now includes displacement ventilation in all spaces except the administration offices, which will include traditional air conditioning. Ed explained that the number of ducts required in small offices makes it better to stick with air conditioning in the administrative area. The auditorium is being designed to use displacement ventilation.
á The field house will use conventional heating and ventilation.
Carlos DeSousa reviewed the electrical energy conservation measures:
á The design includes high efficiency indirect lighting using acoustical clouds to reflect light.
á Dual occupancy sensors (motion and heat) and dual zone dimming photocell sensors are included.
á Plan to use LEDs on outside lights – reduce operating cost by 50%. LED light fixtures have a significant cost premium.
Discussion followed:
á Mike Budlong noted that the LEDs are a good example of a favorable life cycle analysis that could result in rebates. Products must be Energy Star rated and have a life span of at least five years.
á Do not value engineer out elements that could be approved for incentives.
á Both NSTAR and National Grid have programs. Modeling will be done for both.
á The order of magnitude of rebates is $100k - give or take.
á Steve reiterated that we need to be much further along in design to do modeling.
á Mike said that there is a lot in our project that qualifies for the new Comprehensive Projects program. We could take an incremental approach, but the incentives are 75% for piecemeal and 90% for the comprehensive approach.
á Steve advised that the Memorandum of Understanding Regarding Comprehensive Design Projects should be signed by Wayland and submitted to NSTAR. WaylandÕs share of the modeling cost is already included in the HMFH budget.
á Jennifer noted that MA-CHPS scorecard should be updated with changes.
Lea thanked Ed, Carlos, Mike, and Enrique for their presentations and input on the energy review.
2. Overall Design Review – Steve handed out the latest site plan and building plans which have been
submitted as part of the NOI and will be submitted for Site Plan Review. Discussion followed.
á Eric reported that there were many good ideas expressed during CM interviews regarding utilities, phasing and site logistics.
á Parking plan is still being developed. It might be possible to gain a few more spots in the lot planned for construction parking. Steve asked to know soon about parking.
á The connection between the field house and building A is not yet resolved.
á Egress out of Social Studies building needs work.
á Take a fresh look at the light monitors. Might sky lights or clear story treatment work instead? Are light tubes an option? They are less expensive, but not as aesthetically pleasing.
á Look for places where ice forms and falls.
á Think about washing windows.
á Consider reducing the glass in the staircases (small glass boxes).
á Think about the tower. Might there be a better option.
á Feature glass see-through areas with light.
á Prepare void areas to either side of library on south side for future classrooms.
á Is snow storage area big enough?
The HSBC agreed to study the plans and submit comments to David by Tuesday. David will organize the comments and send them to Steve.
Steve said that the buildings have had no major design changes, just little changes here and there. He plans to have a detailed review of the Field House, performance spaces, and technology. He expects that the footprint will be frozen by the end of March.
Motion: A motion was made by Jim Howard and seconded by Jennifer Steel to approve the minutes to HSBC meeting #91 held on Feb. 4, 2010.
Vote: The motion was approved: 6 in favor, 1 abstention
Motion: A motion was made by Eric Sheffels and seconded by Joe Lewin to approve the minutes of the Construction Manager Pre-qualification Sub-committee held on Jan. 12, 2010 and the two Construction Manager Selection Committee meetings held on Feb. 12, 2010 and Feb. 16, 2010.
Vote: The motion was approved: 4 in favor, 0 opposed (only the Selection Committee members voted)
Adjournment – The HSBC adjourned at 10:30 pm.
Next special meeting – Tuesday, Feb. 23 at 5:30 pm in the Commons conference room at WHS (CM interviews)
Next regular meeting – Thursday, March 11 at 7:00 pm in the Commons conference room at WHS
Observers: Sam DiSavino
Comments from the public: none