Leadership Council

The members of the San Antonio 2030 District Leadership Advisory Council passionately volunteer their time and resources to help us achieve our goals.


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Heather Gayle Holdridge

Heather Gayle Holdridge, LEED AP BD+C, EIT, Assoc. AIA is the Sustainability Director at Lake|Flato Architects, a firm that has gained national recognition for architecture that successfully responds to its particular place while seamlessly integrating with the natural environment. Leveraging her background in mechanical engineering, Heather directs all Lake|Flato project teams in establishing achievable sustainability goals. She devises strategies and establishes methods and systems to realize those goals under programs such as LEED, the 2030 Challenge, and the Living Building Challenge. Heather works closely with design teams to evaluate appropriate passive systems and performs energy modeling throughout the design process. Heather’s projects have included the Engineered BioSystems Building at Georgia Tech University; the Austin Central Library; Vanderbilt University’s Engineering and Medicine Building, and the LIVESTRONG Foundation facility. She received a Bachelor of Science in Mechanical Engineering from The University of Texas at Austin and a Master of Business Administration from The University of Texas at San Antonio.  Heather is the Chair of the San Antonio 2030 District Leadership Advisory Council, and was instrumental in garnering grassroots interest to establish a 2030 District in San Antonio.


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Pamela Hannah

Pamela Hannah is the Chief Operations Officer for the San Antonio Museum of Art.  Ms. Hannah has been involved with museum planning, construction and operations for 20 years.  She has overseen strategic planning, master planning, construction, renovation and operations at a number of museums in Los Angeles, and most recently in San Antonio at the Briscoe Western Art Museum, LEED Gold-certified The DoSeum and now the San Antonio Museum of Art.  Ms. Hannah has used her training as civil engineer from Purdue University to help museums around the country modernize and position themselves for sustainable and smart growth in the future.


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Steve Graham

Steve Graham has been with the San Antonio River Authority since 1991.  As Assistant General Manager of the San Antonio River Authority (SARA), Mr. Graham directs the administration and business of the operational and technical departments within the Authority, including Watershed Engineering, Watershed Operations, Utilities, Environmental Sciences, Real Estate, and Parks with a total of approximately 200 employees in these areas.  He is responsible for furthering the mission of the Authority through the operation and development of water and wastewater treatment facilities, environmental protection, promotion of low impact development, and water quality in the San Antonio River Basin and advancement of flood control, engineering, and project management to meet the needs of the district.  

Mr. Graham has thirty-one years of professional engineering experience, a Bachelor of Science in Civil Engineering from Texas A&M University and is a member of Chi Epsilon Engineering Honor Society.  He is active in the Texas Water Conservation Association (TWCA), the American Society of Civil Engineers (ASCE), the Association of State Dam Safety Officials (ASDSO), the Texas Floodplain Management Association (TFMA), the National Association of Flood & Stormwater Management Agencies (NAFSMA), and formerly on the Engineering Advisory Council at the  University of Texas at San Antonio (2006-2013), the  National Boards of  St. Jude’s Ranch for Children (2011-2017), and the San Antonio Chapter of the American Institute of Architects (AIA) (2013-2015).    


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Nicholas Jones

Nicholas Jones is Clean Cities coordinator for Alamo Area Clean Cities (San Antonio) Coalition at the Alamo Area Council of Governments (AACOG). The Alamo Area Clean Cities Coalition works to advance the region's economic development, energy security, and environmental and public health by promoting policies and practices that reduce foreign petroleum consumption in transportation and replace it with American made energy.

Prior to joining AACOG, Jones worked with the Solar America Cities program in San Antonio and has worked on all aspects of residential, commercial, and utility-scale solar projects from planning to installation. He also helped form the Sustainable Business Program at UTSA that enabled businesses in the Alamo Area to evaluate business purchases and processes that would lower their operating costs while helping the environment, including energy saving practices as well as renewable energy, energy efficient hardware, and alternative fuel vehicles.


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Beth Keel

Beth Keel is the Sustainability Initiatives Liaison for the San Antonio Housing Authority (SAHA) and an avid outdoor enthusiast. She spent her life in the natural world looking for simple ways to understand interconnectedness. She attended Naropa University in Boulder, Colorado for a Bachelor’s degree in Interdisciplinary Studies and a Master’s Degree in Environmental Leadership. She brings life and university experience to SAHA by looking outside of the box for answers in sustainability, education, green building, and conservation. She has continued her education as a Certified Energy Rater, Certified RESnet Green Rater, Certified in Permaculture Design, a Texas Master Naturalist, and is currently working on her Certified Energy Manager. She has brought the agency 11 national awards, 12 local awards.


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Brian Keller

Brian Keller is currently employed as the Director of Commissioning for Cleary Zimmermann Engineers and has 28 years of experience in building systems commissioning, MEP QA/QC, DDC controls testing, and test and balance. He has commissioned numerous projects, many of which are LEED® certified, for various market sectors including federal and state government, healthcare, educational, and commercial.  Brian has been involved in MEP assessments, programming, plan development, equipment replacements, expansions, and commissioning in new construction and renovations. He is a member of the National Environmental Balancing Bureau (NEBB) and along with the firm holds certifications for Building Systems Commissioning and Testing, Adjusting & Balancing. He currently chairs the Exam Development Committee which operates under the auspices of the NEBB Nat‘l Certification Board and also serves on the Practical Exam Committee. Locally, he is currently fulfilling six years of service on the Texas NEBB Chapter Board of Directors with two of those years serving as the Chapter President.


Clare Lassus

Clare Lassus, LEED GA is a Design Coordinator at LPA, Inc. With a proven commitment to integrated sustainable design, LPA designs facilities that span from K-12 schools, colleges and universities and corporate, healthcare and civic establishments. Clare received a Bachelor of Arts degree from Texas A&M University and a Master of Architecture degree from the University of Texas at San Antonio. She also holds a Certificate in Historic Preservation and is an alumna of the Environmental Defense Fund Climate Corps Fellowship program. During her time at UTSA, she was a researcher at the Texas Sustainable Energy Research Institute where she simulated building energy performance, designed and implemented a one-year energy and thermal performance research study, and collaborated with USAA, CPS Energy, NREL, and other researchers nationwide.


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Anita Ledbetter

Anita Ledbetter is the visionary of Build San Antonio Green, she has been at the helm for almost 11 years, since 2006, shaping the program into the success that it is today. Anita combines sociological insight and almost 20 years in the construction industry to give her a unique perspective in building our programs. Her passion for community service runs deep. Anita is a Climate Reality Leader has served on numerous boards and committees, the Greater San Antonio Builder’s Association, the City of San Antonio’s Sustainable Building Code Task Force, the Mission Verde Alliance, SA Tomorrow Sustainability Plan Committee, and San Antonio Bike Share.


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Douglas Melnick

Douglas Melnick, AICP, CNU-A, was named the City of San Antonio’s first Chief Sustainability Officer in March 2014.  He leads the Office of Sustainability in the areas of sustainable transportation, municipal and community sustainability, and energy management. He oversaw the development of the SA Tomorrow Sustainability Plan, which covers the community, as well as municipal operations, and serves as a data-driven and measurable plan structured around social, environmental, and economic sustainability, with a special focus on resilience. Mr. Melnick also coordinates the City of San Antonio's air quality and climate efforts.

He has over twelve years of local government experience and previously served as Director of Planning & Sustainability for the City of Albany, NY, the capitol of New York State. Mr. Melnick serves as a core member of the Urban Sustainability Director's Network (USDN), serves on the Board of the International Society of Sustainability Professionals (ISSP), the San Antonio 2030 District, and is Chairman of the Board for Build San Antonio Green.  He is member of the American Institute of Certified Planners, a CNU-Accredited Professional, and an ISSP-Sustainability Associate.


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Marc Migliazzo

Marc Migliazzo has thirty years of experience including construction, design, management and ownership of commercial buildings.   Focusing on opportunities created by the economic downturn, with everybody working under budget constraints, and new mandates for energy reductions, we started Eco Induction Systems, LLC (EIS Lighting) specializing in energy saving lights. Because EIS handles Magnetic Induction, LED, and CFL’s we can recommend the right light for the right application. With the great advancement of LED’s EIS now only works with LED.  We feel strongly that made is America is an important criterion. For us it means talking and visiting our manufactures face to face, and developing the relationship to get special orders in a timely manner and to work with their budget constraints. All products are UL or ETL approved.  Marc graduated from Tulsa University and is certified as a LEED Green Associate and a BOC Lighting Instructor.


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Kim Stoker

Kim R. Stoker, REM, P.G., Sr. Director, Environmental & Sustainability at CPS Energy directs and provides leadership for utility-wide environmental compliance programs, water supply planning, environmental policy, sustainability initiatives and for the development of corporate environmental metrics-designed to support the mission of CPS Energy.  Ms. Stoker represents the interests of CPS Energy on several national and local air, water, sustainability planning, and industry boards and committees.  Ms. Stoker leads a team responsible for environmental strategy, permitting and reporting, in meeting compliance requirements and implementing sustainable business practices.  She is a Registered Environmental Manager and a Professional Geologist in Texas. 


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Jose Torralva

Jose R. Torralva is the Facilities Management Division Chief for Bexar County.  Jose is responsible for planning, directing, managing and overseeing the daily operations and maintenance of all Bexar County facilities consisting of over four (4) million square feet of buildings and grounds. With a multi-million capital improvement program the Facilities Management department has continuously added new buildings to its portfolio.  Jose is also responsible for the Energy section and all energy related activities which includes maximizing available energy-efficient conservation technologies while utilizing sustainable materials and approaches in design, construction and operations.  He enjoys managing work environments where the results of his team accomplishments provide a benefit to people.  Jose possesses the Sustainability Facility Professional (SFP), Certified Facilities Manager (CFM), and the Certified Healthcare Facility Manager (CHFM) credentials.  He also serves as Director for the International Facilities Management Association, San Antonio Chapter. 


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Eric Webster

Eric Webster moved to San Antonio in January 2015 from Albuquerque New Mexico to join Trane Inc. as the Services Sales Leader in South Texas. After a re-organization in late 2016 Eric was promoted to General Sales Manager for the South Texas region.   

Eric has been working for the Trane company for 26 years and has served in a number of roles over that time, from field technician, project management, to sales and leadership all in the HVAC controls and automation field. In his free time, he enjoys hunting, fishing, biking and spending time with family and friends. Eric promotes buildings to business results in our community while helping sustain our environment, and is looking forward to helping San Antonio 2030 grow and meet its energy and conservation goals.



As the Director of the San Antonio 2030 District, Elizabeth Kertesz, LEED AP BD+C, CDT, provides local direction, recruitment, and technical assistance for the district. Elizabeth has worked in the sustainable and high-performance building industry for more than 20 years. She has had a wide range of experience related to the built environment including construction management, land planning, and green building design as well as training for Leadership in Energy and Environmental Design professional designations.  She uses these skills, as well as her network of professional contacts, to expand the San Antonio 2030 District membership and provide guidance and support as member buildings work to achieve their goals.  Elizabeth graduated with honors from the University of Texas at San Antonio with a Bachelor’s in Business Administration (B.B.A.) degree in Construction Management.