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2013 Green Building Awards


The Hotchkiss School Biomass Facility

Drawing  admiration from all the judges, The Hotchkiss School Biomass Facility,  this year’s choice for the Alexion Award of Excellence, represents a shapely project that belies its functionality.  Providing heat for the entire preparatory school - 85 buildings, 1.2 million square feet and approximately 600 residents, the facility burns sustainably harvested woodchips. 
Both design and functionality were key in the jury’s decision to award the highest honor to the biomass facility.
The design meets two seemingly contradictory goals: creating an iconic presence while also merging into its natural setting, as befits its mission. Sited at the periphery of the School’s campus, the profile of this 16,500-square-foot building is capped by a rolling, vegetated roof that changes color, chameleon like, with each season. Designated a carbon neutral fuel by the International Panel on Climate Change, the locally sourced woodchips are replacing some 150,000 gallons of imported fuel oil per year and cut emissions overall, most dramatically sulfur dioxide, by more than 90 percent. Waste ash is collected for use as fertilizer. The plant is an integral part of the School’s commitment to becoming a carbon-neutral campus by 2020. This campus heat plant was not seen as dreary and uninteresting, but rather as a living classroom. It exposes both students and visitors to ecologically sustainable technologies and materials. The mezzanine walkway overlooks and circumnavigates the wood burning boilers, wood chip bunker and conveyers, the stoker auger, the boiler fire tubes, the electrostatic precipitator, the ash auger, and an exhibit with computer terminals that explain the plant’s operation and track performance data. Forest Stewardship Council wood or indigenous timber was used in the building’s construction. The building’s glue-laminated timber trusses embody less energy than reinforced concrete or steel and can be used for much longer spans and complex shapes. Outside, a nature path affords views of the green roof, which absorbs and filters rainwater runoff, a rain garden, bio-swales, and nearby wetlands. The building is slated for LEED Silver certification for features that include: renewable construction materials; water-conserving plumbing fixtures; use of local materials with a high recycled content; an abundance of daylight inside; and highly efficient mechanical systems, lighting, and exterior skin.

Project Team

Architect                 Centerbrook Architects and Planners
MEP                        Van Zelm Heywood & Shadford
Civil                         Milone & MacBroom
Structural                DeStefano & Chamberlain



Institute for Sustainable Energy at ECSU

The mission of the ISE is to “identify, develop and become an objective energy and educational resource regarding the means for achieving a sustainable energy future for Connecticut” and for the past eleven years, under the leadership of Bill Leahy, it has undertaken innumerable initiatives, among the most noteworthy and successful was the High Performance School Initiative Report to the CTGBC in January 2006, initiated by CTGBC, through grants from the Henry P. Kendall Foundation and the  CT Clean Energy Fund.  Later that same year, again working with CTGBC, the ISE produced a written report by the student interns and staff at ISE, The Energy Efficiency Study of Connecticut Schools, which provided an ENERGY STAR benchmarking analysis of 120 CT schools. 
The ISE became the Partner of the Year 2004 for Energy Education. Beyond the benchmarking and studies of over 350 CT schools, the ISE has testified and supported High Performance Construction Standards since 2005.  Most recently ISE collaborated with the CT Department of Education, CT DEEP, CT DPH, CT DCS as well as many environmental and educational organizations to promote green and healthy schools for all through the development of the CT Green LEAF School program.  The Center for Green Schools recently recognized the CT Green LEAF program as one of the 10 best school programs in the country.

“The Institute has been involved in Green Building Standards for public buildings in Connecticut  since 2003 when the CT GBC helped us get a grant from the Kendall Foundation in Boston to study why government was balking a building High Performance Buildings.  After ten years, the Institute is proud that through its affiliation with CT GBC and its members, Connecticut has adopted the best Green Building Standards for public buildings in the country and now has nearly 100 projects in the works. “ Bill Leahy, Chief Executive Director of Operations.



CW Resources, Inc.

CW Resources has achieved a high level of environmental stewardship, promoting excellence in environmental responsibility among its many federal, state and commercial customer projects, and encourages compliance through its Green Policy.  CWR is a leader in its industry, educating employees and tenants of their projects, reaching out to experts to continually improve its initiatives.  Through its leadership, headed by William Green, Senior Vice President, Contract Services, it has encouraged other custodial and grounds keeping companies to be more responsible.  CWR employees, including Mr. Green, are trained in LEED Existing Building custodial processes.  The company is a certified ISSA Cleaning Industry Management Standard (CIMS) and CIMS-Green Building (GB) with Honors Company.

CW Resources was recently awarded the Performance Excellence Award for hiring and training veterans and disabled veterans for custodial-related work at a LEED Silver building.  Headquartered in New Britain, CWR empowers persons with disabilities and those economically disadvantaged by providing prestigious employment opportunities.

“CW Resources is an amazing company and Bill Green’s team and employees deserve recognition for their commitment to Green environments.  That we were chosen from among such an accomplished pool means a lot to everyone at CW Resources”  Anita Kersten, CW Resources, Inc.



Chamberlain Heights Redevelopment
Meriden Housing Authority

The Chamberlain Heights Redevelopment – Meriden Housing Authority project received an Award of Honor in the Residential Awards Category by the Connecticut Green Building Council at the 2013 Annual Green Building Awards on June 20, 2013.
This project’s “smart growth” location included the redevelopment of existing housing located within a short distance from local shopping, jobs and public transportation.  The project is anticipated to receive LEED® for Homes Gold, Enterprise Green Communities and EPA Energy Star® certifications.  Green features include rain gardens throughout the site to minimize stormwater runoff, state-of-the-art spray foam insulated wall cavities and air ducts, high-efficiency equipment and appliances, programmable thermostats and low-flow water fixtures.  Additionally, 57 new trees were planted to improve shading along sidewalks throughout the development.
The team for this project included Co-Developers, Meriden Housing Authority, Jonathan Rose Companies and Westmount Management, Inc.; Architect Paul Bailey Architects; and General Contractor LaRosa Building Group, LLC.
The Chamberlain Heights development includes 124-units of mixed-income residential housing contained within 36 residential buildings, which includes 25 units of supportive housing with services for families at risk of being homeless. 



Performance House


Performance House provides a very efficient layout on small lot: 2,657 SF, 4 bedroom, 3 1/2 bathroom home; lot size 7,510 SF. The latest green technologies for energy performance were integrated into the plan and execution of this structure. Handicapped compliant entry and first floor bedroom suite, this home would be suitable for a physically challenged occupant as well as an aging in place resident.
The green features that earned this home in Old Greenwich a LEED Platinum Certification included:

Sustainable Site - Enhanced Durability & Reduced Maintenance: the infill lot included storm water management by using permeable surface materials. The home is within walking distance to many community resources such as the library and parks.  Features of the construction process included on-site recycling of construction materials.   Building materials included GAF Cool roof shingles that reflect the sun and renewable and recycled materials such as  such as ex recycled glass in concrete.  A termite barrier was added as well as appropriate roof overhangs to maximize sun and increase the longevity of walls. A home slicker continuous drainage plan was untilized.
Water efficiency was delivered by using Watersense Shower heads, faucets and water closets, as well as water conserving appliances. Hot water usage was reduced, by on-demand pumps and structure plumbing with a direct return line.  The plan also provides for rain water collection.
 LED permanent fixtures as well as Energy Star appliances were installed to insure energy efficiency throughout.
The house has a high efficiency Hydronic HVAC system with ducts sealed in conditioned space.  The duct system was tested for leakage along with blower door testing. Maximized insulation and minimal envelope leakage by Owens Corning energy complete system along with high quality windows oriented properly ensured the highest R values,
For the electric car owner, a charging station and 7.44kW Sun power PV panels
 An exceptional emonitor energy management system and CAD 6 high-speed data and voice lines added to the technology features of the home.
Indoor Environmental Quality was insured through the use of Green Guard aproved insulation.
Kitchen cabinets and vanities were fabricated with FSC (Forest Stewardship Council) certified woods with
no VOC and low VOC paints and sealants used for finishes.
 A garage exhaust fan, to air out carbon monoxide, moisture control tile backing materials by Schluter System,
high MERV air filters and bathroom exhaust fans with moisture sensors were installed to insure quality.
Additionally a handicapped bath and bedroom were designed for the first floor.  Since the home does not have a full basement, under slab insultation was added:  = R-13.6, foundation walls: = R-23.7.
All walls were built with 2x6 assembly including all gable ends:= R-31.5.  The garage wall in between powder room: = R-27.6, All other garage walls: = R-31.5, garage ceiling: = R- 50.7 with main Roof assembly: = R-52.6.
Buderus modulating 95% high-efficiency boiler with low watt Grundfos Alpha2
circulating pump’s was installed and the air conditioning units and air handlers are Carrier Infinity communicating variable speed.  Fresh air is continuously circulating by a low watt ERV unit.
 Hot water heater is a 74 gallon Buderus unit with state of the art circulating pumps for direct hot-water
 Electrical service 200 amp electrical service back up by a Kohler generator
Performance House has received in addition to the LEED Platinum for Homes - National Green Building Standard: Emerald Certification, the Home Builders Industry Awards “HOBIs” Connecticut:: Best Green Energy Efficient Spec Home; Best Green Energy Efficient Home Overall. -2nd place in “2012 CT Zero Energy Challenge” a Statewide competition sponsored by Connecticut Light and Power. - Energy Star Version 3 “HERS Score 20” EPA Indoor airPlus, EPA WaterSence - 2nd in the country to be certified in the new the Department of Energy DOE Challenge Home.

Project team included:
General Contractor: Preferred Builders, Inc.
Architects: Granoff Architects
Sustainability Consultants: Steven Winter Associates, Inc.


Rowayton LEED Gold

The Lawrence residence achieved LEED Gold via a very thorough and consistent team effort of owner, architect and contractor. Working together from day one, and bringing in a structural engineer, landscape design and mill worker early on, we made sure that everyone involved was fully on board with and completely invested in making a very well crafted, beautiful and super sustainable home. The team effort earned the Award of Merit in the Residential Awards Category by the CT Green Building Council at the 2013 Annual Green Building Awards on June 20, 2013.
Leading the team, Architect: Elizabeth DiSalvo, Trillium Architects and Contractor: Chris Trolle, BPC Green Builders, included impressive innovations to earn the Gold certification.
THE ENVELOPE: R10 Under slab EPS Foam boards, R30 Superior wall with added .8lb open and closed cell foam insulation, R25 Walls (2x6 @24" oc, with .8lb foam, wrapped in 1" DOW Structurally Insulated Sheathing (SIS) R45 Roof - combination .8lb open and closed cell foam insulation, Windows: triple pane, solar gain specific placement, windows BLOWER DOOR TEST: 1.9 @ ACH 50
MECHANICALS: Geothermal system, ERV, high efficiency gas fireplace insert back up which will heat much of the house, water collection system, fully automated and remotely controlled heating, cooling, lights, and security system. All LED lights, All energy Star Appliances and low flow plumbing fixtures. Fans for shoulder season cooling and air distribution. PV ready (to be installed at a near future date.) HERS SCORE: 48
FINISHES: All finishes on walls, floor and millwork: NO VOC. All wood FSC Certified with no formaldehyde. LANDSCAPING: All indigenous species, controlled irrigation.



400 Atlantic Title, LLC

The newly renovated 400 Atlantic Street multi-tenant corporate office building is a recognized leader in sustainability. Located in the heart of downtown Stamford, it stands out among a long line of other corporate buildings in the area for its dramatic and modern design and now for being recognized with an Award of Honor in the Commercial Awards Category by the CT Green Building Council at the 2013 Annual Green Building Awards on June 20, 2013.

The facility on Atlantic Street created a cooperate environment that integrates the principles of environmental responsibility and sustainable growth into best business practices. Since the start of the LEED project, the in house “green team” has incorporated many sustainable initiatives as well as cost cutting and energy savings strategies. These strategies include changes in electrical usage, fuel/gas consumption, hardscape management as well as a hard look at garage and parking operations.

The team for the project included the building owner The Landis Group, the Management Company of 400 Atlantic Title, LLC, the architect Ulrich Franzen Associates, and LEED Project Manager Gerard A. McNicholas.  At 400 Atlantic, the term “green team” is no longer regulated to just the engineering staff or the management office, but to all service employees on site.

The CTGBC 2013 Annual Green Building Award is the building’s most current achievement. Due to the changes that were made to the building at 400 Atlantic Street, benchmarking with achievements has become common. Here are just a few: BOMA - 2012 Building Of The Year Award, BOMA - 2012 Engineer Of The Year Award, Energy Star - 2012/76,  Energy Star - 2013/90 Sustainable Stamford, and  USGBC - 2013 LEED Certified Silver O&M awarded in April of this year 



Sikorsky Aircraft Corporation
Engineering Building 3rd Floor

The facility’s LEED accomplishments include diverting 8% of the project’s energy to on-site renewable sources, specifically Sikorsky’s 106,250 kWh/year photovoltaic system and Combined Heat and Power (cogeneration) facility; 40% reduction in connected lighting power density through installation of lamp and ballast combinations; 37% water savings achieved by retrofitting high-efficiency toilets and waterless urinals; 83% of construction waste diverted from the landfill; 23% of construction materials made of recycled content; 21% of construction materials manufactured locally. In addition, two years of the third floor’s electricity consumption is offset by purchased Renewable Energy Credits (RECs).

The team for the project included: HP Engineering (Architect / Engineer), West Reach Construction Company, Inc., SRI Fire (Fire Protection, HVAC, Plumbing), Griffin Electrical (Electrician), Dome-Tech, Inc. (Comminssioning Agent) and Architectural Energy Corporation (LEED AP).

The project consisted of renovating 93,000 sf of the 3rd floor. Initially put out to bid as a non-LEED project, Sikorsky decided to convert the project to seek LEED accreditation. Each contractor and Sikorsky met the challenge this presented to learn the proper procedures and protocols of all the different credits of LEED. Ultimately, the 3rd floor project achieved the prestigious LEED Gold EB. Building on their success, Sikorsky has currently undertaken further renovation to the building on the 2nd floor. Looking to the future, their goal is to achieve LEED Gold or higher on this additional project.



Yale LEPH 6th & 7th Floor Laboratory Renovations

The Yale Laboratory of Epidemiology and Public Health (LEPH) at the Yale School of Medicine received an Award of Merit in the Interior Awards Category by the Connecticut Green Building Council at the 2013 Annual Green Building Awards on June 20, 2013.
These two projects included renovation and fit-out of a large portion of the 6th floor and the entire 7th floor of the Laboratory of Epidemiology and Public Health (LEPH) building at the Yale School of Medicine.
Renovating the interior of this high rise building constructed in the 1960’s presented a number of challenges to the Design team, tasked by Yale to achieve LEED Gold certification. First of all, the program was predominately wet bench lab space, a notoriously high-energy use function.

Building infrastructure upgrades were not included in the project scope, requiring the design team to focus on opportunities for floor-by-floor efficiencies and improved operations to ensure high-performance sustainable design.

Given these constraints, the Design Team prioritized energy use reduction and water use reduction, specified healthy materials, developed appealing and uplifting interior spaces, and designed the spaces to be flexible and efficient in order to minimize future renovations.

In addition, the Construction Manager played a pivotal role in their implementation of a construction waste management plan that diverted an impressive 96% of all demo and construction waste from landfills for the 6th floor project and 98% on the 7th floor.
 High ceilings, interior clerestory glazing, highly reflective surfaces and a combination of up /down lighting fixtures create a visually comfortably and functional workplace while still achieving a lighting power density 23% (6th Floor) and 25% (7th Floor) below ASHRAE 90.1-2007 Standards. 

The 6th Floor renovation achieved the goal of LEED Gold Certification and the 7th floor is well-positioned to achieve the same. The Owner’s overarching goal to create an efficient, comfortable, healthy, and energy-conscious design for long-term sustainable operations sets a high-performance precedent for future renovations and upgrades to existing buildings at YSM and throughout our community.



Kohler Environmental Center
at Choate Rosemary Hall

The LEED Platinum Kohler Environmental Center at Choate Rosemary Hall received an Award of Honor in the Public Awards Category by the Connecticut Green Building Council at the 2013 Annual Green Building Awards on June 20, 2013. The objective of this facility is to bring together two primary objectives: developing environmentally responsible buildings and teaching students environmental responsibility.
Set in the midst of 268 acres of meadows, agricultural fields, second-growth forest, and wetlands, the Kohler Center allows students to learn from the site's exceptional biodiversity and range of habitats. A cloister lining the courtyard links the Kohler Center's 14 dormitory rooms, faculty apartments, common spaces, classrooms, laboratories, and a state-of-the-art research greenhouse. The building's materials undefined native stone walls, stained cedar trim, and fiber-cemented plank siding undefined reflect its rustic nature.
The goal of the Center is to teach environmental stewardship through sustainable design of the building itself. 100% of the building's annual energy needs is provided by a 294-kilowatt photovoltaic array, roof-mounted thermal solar panels, and waste cooking oil. The Kohler Environmental Center’s building shell is designed to minimize heat loss in the winter and heat gain in the summer, and in turn reduce the energy required for space conditioning. Structural Insulated Panels at the roof combined with thick and staggered double stud exterior walls filled with spray insulation provide more than double the insulating value of typical construction and minimize thermal bridging to the exterior. Deep eave overhangs and a south facing sun shade block solar heat gain in the summer and allow it in the winter. The Kohler Environmental Center’s roof-mounted evacuated solar hot water tubes can heat 160,000 gallons of water annually, supplying 100% of the Center’s anticipated hot water needs. The greenhouse adjacent to the center is heated by a boiler that uses waste cooking oil from Choate's kitchens. Rainwater is collected in a cistern attached to the greenhouse and reused to water the plants inside.
The largest energy demand from most buildings comes from heating and cooling. The Kohler Environmental Center’s 800-foot-long earth duct, buried ten feet below ground, capitalizes on the soil’s constant temperature to precondition fresh air for the building’s HVAC system. In the winter, cold air is warmed by the ground before being heated by the building’s mechanical system causing it to “work less,” and vice versa in the summer. The earth duct reduces the building’s energy demand for space conditioning by 24%. The natural ventilation strategies employed at the Kohler Environmental Center are designed to minimize the need for mechanical cooling. Operable windows in all spaces allow users to control thermal comfort as needed. The tower acts as a solar chimney by using convection to enhance the natural stack effect of hot air to exit the building at a high point while drawing cooler air into the building at low points. The classrooms and public spaces use a similar technique with operable windows on opposing sides of the room, one high and one low, enhancing natural cross ventilation. Tall and clerestory windows provide natural daylight to the majority of the KEC’s occupied spaces minimizing the need for artificial lighting.

The team for this project included Robert AM Stern Architects, Shawmut Design and Construction, Kohler Ronan, and Atelier Ten.
Founded in 1890, Choate Rosemary Hall is a private college preparatory school in Wallingford, CT with enrollment of approximately 850 students. The campus sits on over 450 acres with 121 buildings.  Choate is committed to sustainability with an active Sustainability Committee, recycling program, and various student-run environmental clubs.



Community Health Center - Middletown

The new state-of-the-art Community Health Center located on Main Street in Middletown was honored with an Award of Merit by the CT Green Building Council at the 2013 Annual Green Building Awards on June 20, 2013.
The facility, built with recycled and regional materials, exemplifies sustainability and environmental stewardship.  With the anticipated goal of LEED certification, the sustainable design solutions include a cultivated green roof to reduce heat island effect, a high performance building envelope, as well as an electric car charging station. 
The team for the project included: Robert Olson + Associates (architect), PAC Group LLC (general contractor), Program Management Group (construction manager), and Suzanne Robinson (LEED consultant). 
The Community Health Center provides comprehensive primary care services in medicine, dentistry, and behavioral health with a special commitment to the uninsured, underinsured and special populations.  Situated in the North End of Middletown, a location close to many of their clients, the building has helped to revive Main Street.



Gateway Community College

Gateway Community College was honored with an Award of Merit in the Public Awards Category by the CT Green Building Council at the 2013 Annual Green Building Awards on June 20, 2013 as an excellent example of a state-of-the-art sustainable educational environment.
The new building, which spans two city blocks in downtown New Haven, is a showcase of sustainable features that proudly achieved LEED NCv2.2 Gold certification. The facility addresses urban sustainability challenges utilizing a roof garden and a ground-floor rain garden to offset the heat island effect and reduce water usage in irrigation by 50 percent, is situated on a remediated brownfield site and provides access to mass transit as well as to cycling commuters.
High-performance building systems offset at least 3% of the campuses total energy demand and in addition meet the targets outlined in the Architecture 2030 Challenge, one of the first community colleges in the nation designed to do so. Almost 20 percent of the total materials used to build GCC contain recycled material or came from building products within 500 miles. The project’s concrete, which accounts for an estimated 11 percent of the total material cost come from a plant in Ravena NY and a quarry from Meriden CT, which were then delivered to the Suzio York Hill concrete company in New Haven, a short distance to the construction site.
Wood products certified by Forest Stewardship Council (FSC), products with very low emissions of volatile organic compounds (VOCs) and recycled construction waste and occupant single stream recycling maintain a high sustainability standard contributing to LEED Gold certification. Optimized day lighting of the atrium and sophisticated light-control systems provide at least 90 percent of its occupants with individual controllability.
The project features a substantive green education signage system which provides students visitors and faculty with additional information on the sustainable features of the project. By doing so, the building itself becomes an instrument for learning – Gateway Community College has begun to offer classes in renewable energy technology installation and maintenance, and the systems on the building incorporated into a practice based learning curriculum.
The team for the project included: Perkins+Will New York, (architect), BHV Integrated Services (MEP engineer), Thornton Tomasetti (structural engineer), Towers Golde (landscape design), and Relab (photovoltaic consultant).
Gateway Community College is an excellent example of a state-of-the-art educational environment contributing to significant urban revitalization. It is the largest one-time funded state project in Connecticut history. The new facility both transforms a neglected part of the city and creates a new campus environment that is truly sustainable in environmental, social, and economic terms.


To view photos from the Awards Event go to

Special thanks to Kristine Nemeth, Victoria Pancoast, Ilona Prosol, Hollie Sutherland, Judy Swann and David Tine, and all those who submitted winning entries, for their contributions to the Awards summaries.


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