About Our Team

Learn more about our team of experts.

Carla J. Mitchell

Principal, Managing Energy
LEED Project Reviewer

Carla Mitchell is a Principal at 3R. She has over ten years of sustainable design and project experience as part of her twenty-three years of mechanical design experience. The majority of Carla’s career has focused on commercial building projects including commercial offices, multi-family/mixed-use residential, universities, sports facilities, senior living facilities, and medical facilities.

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Currently, Carla’s concentration is on the energy components of high-performance buildings. She has seven years of LEED review experience, specializing in Commercial Interiors, New Construction, Existing Renovation, Core and Shell, and Schools projects. She oversees a team of energy reviewers and consultants, providing technical guidance and quality control for projects pursuing LEED certification. Carla currently holds the LEED AP BD+C and LEED Project Reviewer credentials.

Prior to joining 3R, Carla was a Project Manager with a large MEP consulting firm which focused on engineering exceptional environments through high performance design. She provided project management and mechanical system design for multiple high profile projects, as well as LEED project documentation and energy modeling.

Dr. Christine F. Kuntz

Principal, Managing Environmental
LEED Project Reviewer

Christine is a Principal at 3R and specializes in the location and transportation, sustainable sites, water efficiency, and materials and resources categories of sustainable design. She currently holds the LEED AP BD+C, ID+C, and LEED Project Reviewer credentials and has eight years of review experience in LEED for Commercial Interiors, New Construction and Major Renovations…

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..Core and Shell, and Schools rating systems. She currently manages a team of both in-house staff and contract reviewers, providing both review process management and technical oversight for projects throughout the world attempting LEED certification.

Christine received her Bachelor’s Degree in Chemical Engineering from Bucknell University in 2000, and went on to Study Environmental Engineering at The George Washington University, where she earned her Master’s Degree in 2002. She worked at the National Renewable Energy Laboratory in Washington D.C. where her team investigated the feasibility of water efficiency and renewable energy projects for the federal government.

Prior to joining 3R, Christine researched in-situ applications of photon density wave spectroscopy at the University of Potsdam in Germany, where she earned her Ph.D. in Physical Chemistry. Christine is fluent in German.

Jana D. Lake

Principal, Managing CSR
MBA, LEED Green Associate

Jana Lake joined 3R in May 2015 as the Director of Business Development to grow 3R’s green building consulting business. She holds the LEED Green Associate credential. Jana has been in consulting for more than twenty years, ten of which were spent with Accenture, leading a team of internal change experts who helped the company’s senior leaders accomplish their objectives:

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aligning their people and processes to achieve their strategy and maximize their savings/return on investment. Jana brings this expertise to 3R to help clients identify their sustainability strategy, maximize their business case for “green”, and define the most efficient path to achieve their objectives.

Jana has always been committed to work-life balance, and was a leader in implementing flexible workplace practices at Accenture. Following her BA in International Studies at the University of Michigan, her MBA from Duke’s Fuqua School of Business, and her studies at the Copenhagen School of Business in Denmark, Jana worked and traveled extensively throughout Europe. Prior to Accenture, Jana had her own consulting company where she worked on M&A and start-up projects, she worked with PepsiCo in Moscow, and worked with Saturn Corporation. For each client, she evaluated business operations and identified opportunities for improvement and growth.

Outside of work, Jana leads a healthy, active life training for triathlons and half-marathons, keeping up with her five active children, and traveling with her husband.



Ruiming is an Associate with 3R Building Sustainability and specializes in the location and transportation, sustainable sites, water efficiency, and materials and resources categories of sustainable design. He currently holds LEED AP BD+C and O+M credentials, as well as the WELL AP credential. He has three years of experience with LEED for Building…

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..Design and Construction and Building Operations and Maintenance. He currently provides review comments and technical advices for projects pursuing LEED certification.

Ruiming received his Bachelor’s Degree in Civil Engineering from Dalian University of Technology in 2012, and pursued his Master Degree in Civil and Environmental Engineering from Carnegie Mellon University. He has strong programming skills and is versatile in the use of advanced engineering commercial software.

Prior to joining 3R, Ruiming was an Engineering Associate with an engineering consulting firm which focused on structural systems and geotechnical analysis. He was involved with numbers of high profile projects related to site investigation and geotechnical engineering.

Natalie Sheely


Natalie’s work at 3R is fueled by her passion to make a positive influence on our world’s environment. As a registered Architect, prior to joining 3R, Natalie worked on award-winning and LEED accredited projects for Educational, Commercial, Technology and Industrial clients. As a designer, her emphasis has been in the integration of building…

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..assembly systems through a client-centered approach. She maintains an active membership in the American Institute of Architects.

For eight years Natalie had the benefit of working as an architect in team settings with large corporate clients. Her project leadership and organization skills stand out as strengths when working towards client goals. Natalie is continually increasing her knowledge and skills in the area of architectural building systems, building codes, design principles, and sustainable design. As a project architect she was able coordinate the work load amongst her team, communicate effectively between the disciplines, and build consensus between the design team and the owner.

Natalie grew up in Germany and moved to the US in 2000. She is fluent in German, both written and verbal, and has basic knowledge of French and Italian. Natalie is very much interested in the environmental advancements achieved by her home country, such as the Passive House Standard.

Audra M. Benzschawel


Audra joined 3R Building Sustainability in March 2016 as a Building Energy Modeler and Sustainability Program Engineer. She currently holds the LEED AP O+M credential.

Prior to joining 3R, Audra was a Marketing Engineer with the C.D.S. Department at Trane…

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..which focused on the support and training of the TRACE™ 700 energy modeling software and product development for the next generation of the TRACE™ energy modeling software. She provided support to customers over the phone and via email with modeling mechanical systems, troubleshooting files, and understanding results. Additionally, she traveled across the United States and Canada teaching seminars to over 400 customers on using the TRACE™ 700 software and helped develop online training modules to provide on-demand training for customers.

As part of the development team for the next generation of the TRACE™ energy modeling software, Audra worked mostly on the Themes and Templates section, creating the user experience to make the data input process more streamlined and intuitive for the project flow, as well as library research and creation to ensure current, applicable data populated the library.

Jason Clark

LEED AP BD+C, Parksmart Advisor

Jason joined 3R in May of 2016 as a building energy modeler and Sustainability Program Engineer. He currently holds the LEED AP BD+C credential.

Jason has ten years of progressive green building and energy engineering experience. He has worked with MEP Design and Energy Consulting…

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… Residential Energy Efficiency, and Photovoltaic System Design firms. He has performed energy modeling services for LEED and Energy Star Multi Family High Rise projects, energy auditing, code compliance analysis, building performance testing, building commissioning services, and green building strategy consulting.

Jason has extensive energy modeling experience with eQUEST, field data collection, and performance testing tools. Additionally, through entrepreneurial experience, he has developed problem solving skills with a focus on the client.

Krupa Patel


Krupa joined the 3R team in October 2016 as an Engineering Intern. During that time, she learned about consulting for High-Performance Buildings and since has joined the team as a LEED & Sustainability Engineer. She currently holds the LEED AP BD+C credential. Krupa’s time at 3R includes consulting for both …

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… LEED v3 and v4 projects. Major projects include a large multi-family residential building, an office, and medical facilities spanning across the Operation + Maintenance and Interior Design + Construction rating systems.

Prior to joining the team, Krupa was a student at The Pennsylvania State University where she focused her coursework and extracurricular activities on energy efficiency, energy audits, retrofits for existing buildings, and renewable energy systems such as, wind turbines, rooftop photovoltaics, and concentrated solar power plants. She gained an understanding of both the engineering and business sides of the industry, which has proven to be advantageous to her work at 3R.

Krupa is multilingual; she is fluent in Hindi and Gujarati, both written and verbal, and has a high understanding of French, Punjabi and Urdu.

Eamon Geary


Eamon has worked locally, nationally, and internationally in the field of sustainability for over a decade, with extensive experience in building design and construction. His passion for green building was sparked during his undergrad work at Allegheny College and was further kindled when he joined Green Building Alliance in 2005. During this time …

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… he was responsible for Pittsburgh’s first LEED Platinum building and has since overseen the sustainable design elements for over 100 LEED certified projects ranging from a youth activity center to weapon depots.

In the last ten years, Eamon has led national-level sustainability initiatives in the City of Cleveland and Denver to help them achieve their greenhouse gas emissions reduction goals. Additionally, he has worked closely with the City of Pittsburgh, local non-profits, and businesses to develop a comprehensive carbon reduction strategy.

Prior to joining 3R, Eamon was a Construction Sustainability Manager for a North American trade association and Sustainability Director for a large architecture, engineering, and planning firm.

Jennifer J. Jackson

Senior Communications Manager

Jennifer has been a part of 3R since its inception. She used her expertise in marketing and advertising to assist with the branding and introduction of 3R as a consulting firm. Her experience has been in marketing and client/employee communications of business-to-business companies in the areas of management system certification and green building certification.

A note from the president

“We can provide our clients with a complete consulting package for their projects. Our team offers an extensive knowledge of the LEED rating system, expertise in energy modeling, and efficient solutions for meeting your project goals.” -Christopher H. Lake, CEO

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