Terracon Executive and Leadership Team

June, 2026

Leadership Overview

Terracon has 10 executives leading key functions including strategy, finance, information technology, operations, marketing, legal, and technology.

Driven by a commitment to client success, Terracon leverages deep technical expertise and a collaborative approach to deliver reliable, high-quality results across diverse sectors, embodying a philosophy of innovation, sustainability, and safety in all project phases.

Leadership Roles at Terracon

  • President & Chief Executive Officer - Gayle Packer
  • Chief Financial Officer - Donald Vrana
  • Fractional Chief Financial Officer & Controller - Richard Clay
  • Chief Operating Officer - Central Operating Group - Robert Pavlicek
  • Chief Operating Officer, Western Operating Group - Timothy Anderson
  • President - Wayne Ramirez
  • Chief Information Officer - Frank Milano
  • Chief Technology Officer - Too Foo
  • Chief Marketing Officer - Vanessa Zambo
  • Chief Legal Officer - Aaron Mann
  • Gayle Packer - President & Chief Executive Officer

    Gayle Packer, the President & Chief Executive Officer at Terracon, directs the overall strategic vision and operational execution for the employee-owned consulting engineering firm. Packer guides the company's mission to deliver comprehensive project support, from initial site evaluation through construction and asset management, ensuring alignment with core values of innovation, sustainability, and safety. This leadership involves fostering a culture that empowers engineers, scientists, and technical experts to solve complex challenges using data-driven insights. The President & Chief Executive Officer oversees the integration of environmental consulting, geotechnical services, facilities engineering, and materials testing to achieve reliable, high-quality results for clients across diverse sectors. Gayle Packer's role is central to maintaining Terracon's market position and driving its continued growth and success in the engineering and construction industry.
    Gayle Packer

    Donald Vrana - Chief Financial Officer

    Donald Vrana, the Chief Financial Officer at Terracon, manages the company's financial health and strategic fiscal planning. Vrana oversees all financial operations, including budgeting, forecasting, and financial reporting, ensuring the firm's economic stability and growth. This role is critical in supporting Terracon's extensive project portfolio, which spans environmental consulting, geotechnical services, facilities engineering, and materials testing. The Chief Financial Officer works closely with other executive leaders to allocate resources effectively, optimize financial performance, and identify opportunities for investment and expansion. Donald Vrana's stewardship of financial resources enables the company to maintain its commitment to innovation, sustainability, and safety while delivering high-quality results for clients across diverse sectors. Vrana ensures compliance with all financial regulations and drives initiatives to enhance profitability and shareholder value.

    Richard Clay - Fractional Chief Financial Officer & Controller

    Richard Clay, the Fractional Chief Financial Officer & Controller at Terracon, provides specialized financial oversight and controllership functions. Clay manages critical accounting operations, financial reporting, and compliance initiatives, ensuring accuracy and integrity in financial data. This role supports the firm's extensive operations in environmental consulting, geotechnical services, facilities engineering, and materials testing by providing robust financial controls and strategic fiscal guidance. The Fractional Chief Financial Officer & Controller works closely with the executive team to optimize financial performance and support sustainable growth. Richard Clay's expertise ensures that Terracon maintains strong financial discipline, enabling the firm to continue delivering reliable, high-quality results and uphold its commitments to innovation and safety. Clay's contribution is vital for sound financial management and strategic decision-making.

    Robert Pavlicek - Chief Operating Officer - Central Operating Group

    Robert Pavlicek, the Chief Operating Officer - Central Operating Group at Terracon, oversees operational execution and service delivery within the central region. Pavlicek manages the day-to-day activities of engineering, scientific, and technical teams, ensuring efficient project management and high-quality outcomes in environmental consulting, geotechnical services, facilities engineering, and materials testing. This leadership role focuses on optimizing resource allocation, enhancing operational efficiency, and maintaining Terracon's standards for innovation, sustainability, and safety across the central operating group. The Chief Operating Officer - Central Operating Group works to foster strong client relationships and drive business growth within the region. Robert Pavlicek's operational oversight is crucial for delivering reliable, high-quality results and supporting the firm's overall strategic objectives. Pavlicek ensures seamless project execution and client satisfaction.

    Timothy Anderson - Chief Operating Officer, Western Operating Group

    Timothy Anderson, the Chief Operating Officer, Western Operating Group at Terracon, directs operational strategies and performance across the western United States. Anderson leads teams of engineers, scientists, and technical experts, ensuring the consistent delivery of comprehensive project support in environmental consulting, geotechnical services, facilities engineering, and materials testing. This role emphasizes driving operational excellence, fostering innovation, and upholding Terracon's commitment to sustainability and safety throughout the western operating group. The Chief Operating Officer, Western Operating Group collaborates with regional leadership to achieve strategic business goals and enhance client satisfaction. Timothy Anderson's management is key to maintaining Terracon's reputation for reliable, high-quality results and expanding its market presence. Anderson focuses on optimizing workflows and resource deployment to meet diverse client needs.

    Wayne Ramirez - President

    Wayne Ramirez, the President at Terracon, drives strategic initiatives and operational leadership across key business units. Ramirez focuses on enhancing service delivery and fostering growth within the firm's core competencies, including environmental consulting, geotechnical services, facilities engineering, and materials testing. This leadership position involves guiding teams to achieve excellence in project execution, ensuring alignment with Terracon's values of innovation, sustainability, and safety. The President collaborates with other executives to refine business strategies and expand market reach, contributing to the firm's overall success. Wayne Ramirez's role is instrumental in maintaining Terracon's reputation for delivering reliable, high-quality results and advancing its mission to solve complex client challenges. Ramirez champions operational efficiency and client-centric solutions.

    Frank Milano - Chief Information Officer

    Frank Milano, the Chief Information Officer at Terracon, leads the company's technology strategy and digital infrastructure. Milano is responsible for implementing and managing IT systems that support Terracon's broad range of services, including environmental consulting, geotechnical engineering, facilities engineering, and materials testing. This involves ensuring the security, reliability, and efficiency of all technological resources, enabling data-driven insights for complex project challenges. The Chief Information Officer collaborates with executive teams to align technology initiatives with business objectives, driving innovation and operational excellence. Frank Milano's focus is on leveraging technology to enhance client service, streamline internal processes, and support the firm's commitment to sustainability and safety. Milano ensures that Terracon's technological capabilities remain at the forefront of the industry, facilitating high-quality results across diverse sectors.

    Too Foo - Chief Technology Officer

    Too Foo, the Chief Technology Officer at Terracon, spearheads the development and implementation of cutting-edge technological solutions across the firm. Foo directs research and development efforts focused on advancing the company's capabilities in environmental consulting, geotechnical services, facilities engineering, and materials testing. This role is pivotal in driving innovation and ensuring Terracon utilizes the most effective technologies to solve complex client challenges and deliver superior project outcomes. The Chief Technology Officer collaborates with engineering and scientific teams to integrate new technologies, enhancing data analysis, project management, and overall service quality. Too Foo's leadership ensures Terracon remains a leader in applying technology to achieve sustainable, safe, and reliable results for clients in diverse sectors. Foo's strategic direction supports the firm's commitment to data-driven problem-solving and continuous improvement.

    Vanessa Zambo - Chief Marketing Officer

    Vanessa Zambo, the Chief Marketing Officer at Terracon, directs the company's brand strategy and market outreach initiatives. Zambo is responsible for enhancing Terracon's visibility and reputation across the environmental consulting, geotechnical services, facilities engineering, and materials testing sectors. This involves developing and executing comprehensive marketing campaigns that highlight the firm's expertise, commitment to innovation, sustainability, and safety. The Chief Marketing Officer collaborates with sales and operational teams to identify market opportunities, generate leads, and strengthen client relationships. Vanessa Zambo's leadership ensures that Terracon's value proposition is effectively communicated, driving business development and supporting the firm's goal of delivering reliable, high-quality results. Zambo oversees all external communications and market intelligence to maintain a competitive edge.
    Vanessa Zambo
    Aaron Mann, the Chief Legal Officer at Terracon, oversees all legal affairs and ensures regulatory compliance for the firm. Mann provides strategic counsel on legal matters impacting Terracon's operations, including contracts, corporate governance, and risk management across its environmental consulting, geotechnical services, facilities engineering, and materials testing divisions. This role is essential for safeguarding the company's interests and upholding its commitment to ethical business practices, innovation, and safety. The Chief Legal Officer collaborates with executive leadership to navigate complex legal landscapes and mitigate potential liabilities. Aaron Mann's guidance is critical in maintaining Terracon's integrity and ensuring the firm can confidently deliver reliable, high-quality results for clients. Mann champions legal strategies that support business objectives and protect corporate assets.
    Aaron Mann

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    Frequently Asked Questions Regarding Terracon Top Executives and Leadership Team

    Who leads Terracon?
    Terracon is led by Gayle Packer (President & Chief Executive Officer), along with executives such as Donald Vrana (Chief Financial Officer) and Richard Clay (Fractional Chief Financial Officer & Controller).
    Who is part of Terracon’s executive team?
    The executive team of Terracon includes leaders such as Gayle Packer (President & Chief Executive Officer), Donald Vrana (Chief Financial Officer), Richard Clay (Fractional Chief Financial Officer & Controller) and other senior executives.
    How many executives does Terracon have?
    Terracon has 10 executives leading key business areas.
    What roles are included in Terracon’s leadership team?
    The leadership team of Terracon includes roles such as President & Chief Executive Officer, Chief Financial Officer, Fractional Chief Financial Officer & Controller, Chief Operating Officer - Central Operating Group, Chief Operating Officer, Western Operating Group.