Our Leadership Team

Paul Greywall is the President and Chief Executive Officer of Trinity Consultants, Inc. A 30-year veteran of the firm, he has served in several key roles at Trinity. Over the past two decades, Trinity has expanded from an air quality consulting firm into a multi-media environmental consulting, water and ecology, built environment, and life sciences company. Prior to his current role, Paul directed Trinity’s corporate growth initiatives, including the sourcing, execution, and integration of acquisitions. Over the past 15 years, Paul has orchestrated the acquisition of over 35 professional firms, extending the geographic reach and capabilities of Trinity. He also served in various operational roles including oversight of Trinity’s Lifesciences division and Built Environment division. Paul founded Trinity’s North Carolina operations, serving as President of Trinity Consultants of North Carolina, PC, from 1999 through 2015. He has served as the primary instructor for several of Trinity’s air regulatory courses, has written multiple papers on environmental compliance, and is a regular presenter at a number of environmental conferences. In addition, Paul serves on Trinity’s Board of Directors. Paul earned a B.S. in Mechanical Engineering from Wichita State University and a M.S. in Mechanical Engineering from the University of Illinois. He also earned an MBA from Duke’s Fuqua School of Business. Paul is a registered Professional Engineer in Florida, Illinois, Louisiana, New York, North Carolina, South Carolina, Texas, and Virginia.

Jay Hofmann is a member of the Trinity Consultants Board of Directors and Divisional President, Environmental Consulting. A 30-year+ veteran of the firm, he has served in several key roles at Trinity. The firm's initial focus was on air quality consulting, with niche expertise on the complex permitting process for large, industrial facilities. Over the past two decades, Trinity has expanded from an air quality consulting firm into a multi-media environmental consulting, water and ecology, built environment, and life sciences company. Jay joined Trinity as an environmental consultant in 1986. He later served as Chief Operating Officer and in 2001 was named President and CEO. In 2023, he stepped down as President and CEO while continuing to remain active in the business. He has substantial consulting experience and is a recognized authority on Clean Air Act (CAA) regulations, air pollution (source) impact assessments, air pollution control technologies, and environmental management systems. He has also conducted process development work associated with air pollution controls used in oil refining operations and conducted research of the formation of acid rain. His consulting focus is CAA compliance and training. He has routinely been called upon to train environmental professionals and to formally evaluate prospective capital projects involving upgrades and implementation of new and more efficient process in a variety of ways. He has developed and taught numerous private and customized CAA classes to major industrial companies. He is a member of the Board of Directors of the Council of Industrial Boiler Owners (CIBO) and he has been active on CIBO's Environmental Committee since 1994. CIBO works closely with the EPA, the United States Department of Energy, state regulatory authorities, and other governmental bodies to effectuate common-sense environmental regulation. Jay earned B.S. and M.S. degrees in Chemical Engineering from the Massachusetts Institute of Technology (MIT). He also received an M.S. degree in Atmospheric Sciences from the University of Arizona and has completed executive business training at Dartmouth's Tuck Executive Program.

Rancie Bernal is the Managing Director of Human Resources for Trinity Consultants. She has over 23 years of Human Resources experience across several industries, including logistics, consulting, and technology companies. Her scope is across all focus areas of HR with primary leadership in business partnering, management support, and ensuring the employees positive company experience. Prior to joining Trinity Consultants, Rancie held global positions with DHL, Cognizant, and most recently Snow Software. As an HR leader within these organizations, she has experience advising executive leaders on navigating the employee lifecycle and how to avoid pitfalls. With international work experience based out of Germany and managing HR across continents. Rancie has earned a Bachelor’s in Business Administration with focus in Human Resources from Texas State University in San Marcos, Texas. She is currently pursuing her Master’s Degree from the University of North Texas in Denton.

Dave Larsen is the Chief Financial Officer of Trinity Consultants. Prior to joining Trinity, Dave led financial operations at Sabre Holdings as division CFO and Controller for Sabre Travel Network, Sabre Airline Solutions and Sabre Hospitality Solutions. In addition, he served as President and General Manager of the Travelocity Partner Network, which is the largest division of the online travel agency Travelocity. Dave’s varied background includes stops in investment banking with Dain Rauscher Wessels as well as seven years as an electrical design engineer at Texas Instruments. Dave earned a Bachelors of Electrical Engineering from the University of Texas at Arlington and a Masters of Business Administration from Southern Methodist University.

Leslie has led global marketing and business development teams in software, services and technology markets for more than 20 years. She is experienced in taking B2B product and service offerings into new markets and developing programs to drive client retention and new business development. She and her team are responsible for global marketing strategy, cross-pillar GTM initiatives, demand generation, brand strategy, and brand architecture management. Leslie has an MBA from California State University, Northridge.

Navjot Marocha (Nav) is the Chief Accounting Officer of Trinity Consultants. Prior to joining Trinity, Nav led accounting operations at Sabre Corporation as divisional Director of Hospitality and Technology Accounting. In addition, during her tenure at Sabre, she served as Director of External Reporting and Manager of Global Consolidation and Compliance. Nav’s varied background includes experience in ERP system implementations, revenue recognition for complex multi-million-dollar contracts, adoption of technical accounting standards, accounting for M&A transactions and stops in one of the Big 4 public accounting firms (PwC). Nav earned a Bachelor of Accounting from the University of Texas at Arlington and is a Certified Public Accountant (CPA).

Mike serves as Divisional President, Water & Ecology at Trinity. In this senior executive role, he is responsible for developing and implementing strategies that enhance the firm’s industry leading growth and operational excellence for Trinity’s global portfolio of water and ecology businesses. During this tenure with Trinity, he has served as senior operations leader in EHS consulting and in executive sponsor roles for Trinity’s EHS Digital Solutions team, Trinity’s aquatic toxicology team (Minnow Aquatic Environmental Solutions, Canada), Trinity’s ecological survey team (ECOSA, UK) and Trinity’s environmental consulting business in Ireland (AWN Consulting). He has also led firm-wide corporate strategy efforts since 2012 and is a member of the firm’s Board of Directors. In Mike’s technical consulting capacity over 30 years, he is a recognized expert in providing regulatory and strategic advice as well as thought leadership on the most complex environmental and sustainability issues facing Trinity’s clients. In this area, he works closely with senior executives, client technical staff, and other stakeholders in evaluating and implementing initiatives that support and propel his client’s long-term growth and success. Mike has authored numerous technical papers and presentations on a wide variety of environmental and sustainability topics. Additionally, he has served as a consulting and testifying expert witness in state and federal environmental litigation and enforcement cases. In 2014, Mike was selected as a member of the ASTM technical committee responsible for authoring the inaugural Product Category Rule (PCR) for Cement Environmental Product Declarations (EPDs). Since 2015, Mike has served as appointed member of the State of Maryland Climate Change Commission’s Mitigation Work Group as an industry representative.

Alison is a senior leader with more than 25 years of experience in M&A integration, strategic program management, and technical project management. Alison joined Trinity in 2021 as Director of M&A Strategy and Integration responsible for tactical and strategic integration for acquisitions and for developing Integration Management Office (IMO) best practices. Prior to joining Trinity, she was Senior Director of Program Management and Governance for a global BPO (SYKES Enterprises, now Sitel) of 55,000 that recently grew to 160,000 employees serving Fortune 100 clients. Alison managed the Integration Management Office (IMO) for complex acquisitions, integrating 2,000 - 25,000 employees into the organization. In addition to M&A integration, Alison was responsible for building global technical PMO’s to support product development (IT delivery for Fortune 100 clients), digital and automation solutions for CX including RPA/RDA, chatbot, voice co-bot, AI-driven precision coaching solutions and client implementations. She managed technical programs for major companies including AT&T, Verizon, Abbott, Sony, Cigna, Intuit, Procter & Gamble, etc. Alison also led Transformation Management Office (TMO) initiatives to optimize the operational value chain through global process improvements, changes to operating models, shared services implementation, and process automation. Prior to Sykes/Sitel, Alison was responsible for managing integration of acquisitions into parent company (PennWell) to create new products and services for the oil and gas industry. She was also named an officer for a start-up that was launched by the parent company. Alison has a BS in business management from Oklahoma State University, certification as a Prosci Change Management Practitioner, and certification in MIT’s Executive Education in Mastering Design Thinking.

A member of Trinity’s Executive Operating Committee, Dr. Hung-Ming (Sue) Sung joined the firm in 1989 and has provided technical and management consulting support in environmental, health, safety, sustainability and quality issues to clients globally for three decades. She developed and implemented Trinity’s ISO 9001 quality management system that has been certified since 2002 in its Dallas headquarters location. She leads the development of Trinity’s occupational health and safety management system to comply with legal and business requirements globally. She serves as a senior advisor to various business lines in Trinity including EHS information technology (IT) solutions, EHS performance and risk management, the BREEZE® Software group, and Trinity’s environmental consulting teams globally. In 2006, Dr. Sung started Trinity’s operations in China to support industries, institutes, government agencies, and foreign investors. Today, Trinity’s China operations have become the leading expert company in China in environmental permitting assisting industries and local agencies for environmental quality improvements. Dr. Sung has been involved in projects such as regulatory compliance analysis and management and EHS management system development, implementation, and auditing. She has been involved in many EHS due diligence assessment projects for clients globally. Using her extensive regulatory knowledge of the petroleum and energy industries, she has assisted clients in identifying and implementing cost-effective EMS and IT solutions for tracking and reporting EHS key performance indices (KPIs) including advanced OSHA 300 reporting system for large oil and gas companies. She has supported clients on both USEPA RMP and OSHA PSM programs to ensure compliance. She also manages the SANGEATM 4 software sponsored by the American Petroleum Institute (API) that is used for greenhouse gas (GHG) emissions reporting by oil and gas companies. Dr. Sung is a registered Professional Engineer (P.E.) with a doctorate in Environmental Engineering. She has been an environmental committee member of the American Fuels & Petrochemical Manufacturers (AFPM) since 2001. She was an Adjunct Professor at Southern Methodist University in Dallas, Texas (2011-2014). She has taught many professional development courses provided by Trinity and other professional organizations. She has developed more than 20 courses and instructed more than 100 training workshops to environmental professionals all over the world. She consistently receives the highest reviews on her technical knowledge in course topics. She received a B.S. in Environmental Engineering from National Chung-Hsing University, an M.S. in Environmental Engineering from Marquette University, and a Ph.D. in Environmental Engineering from Vanderbilt University.

Albert Dyrness is the Divisional President, Life Sciences. This pillar provides engineering and compliance solutions to the life science industry. Albert has more than 20 years of experience in process engineering design, and commissioning of GMP equipment, systems, and facilities. Albert is a member of the American Society of Mechanical Engineers Bioprocess Equipment (ASME BPE) Standards Committee and is serving as the Chairperson for the ASME BPE System Design subcommittee. He is a past board member of Oncobiologics (now Outlook Therapeutics), a NASDAQ-traded clinical stage biopharmaceutical company. He is also an Industrial Advisory Board Member of the University of the Pacific?s Bioengineering program. Albert received an M.S. in Mechanical Engineering from Massachusetts Institute of Technology. He holds professional engineering licenses in the state of California for Chemical Engineering and Mechanical Engineering.  

Walter Mehl serves as Divisional President, Built Environment and a Managing Partner at Jaros, Baum & Bolles. Since joining JB&B in 1987, he has represented the firm as its principal Electrical Engineer for numerous new construction and retrofit projects located both within the United States and internationally, including projects done for financial and media services firms, museums, residential and hotel/resort facilities. Mr. Mehl has lent his expertise on electrical engineering issues to many JB&B projects, and also has the principal responsibility for JB&B Technologies, the low-voltage services arm of JB&B, which supports the IT, security, audiovisual, RF engineering (antenna systems), building OT cybersecurity and building intelligence design service offerings. Some of his notable projects for financial services firms include work for JPMorgan Chase at 270 Park Avenue, Citigroup at 388-390 Greenwich Street, Nomura Securities at Worldwide Plaza, Credit Suisse at Eleven Madison Avenue and Barclays at 745 Seventh Avenue. Mr. Mehl has also worked on large commercial projects such as the World Trade Center and One Vanderbilt. He has also been involved with aviation projects and residential projects such as The Greenwich Lane and 111 West 57th Street, both luxury condominium developments in New York City. The Revel Hotel and Casino in Atlantic City, NJ, and Baha Mar Resort in Nassau, the Bahamas are representative of his hospitality and gaming experience, outside of New York City and internationally. Mr. Mehl holds a Bachelor of Engineering degree in Electrical Engineering from the Cooper Union for the Advancement of Science and Art in New York City. He is a licensed Professional Engineer in numerous States, and is a U.S. Green Building Council LEED Accredited Professional.