Construction Management

Andres Medina

TAR Ops Specialist

Andrés Medina brings more than 2 decades of construction industry experience, specializing in soft craft services such as maintenance, turnarounds, and special projects. He manages critical initiatives for one of the company’s largest national accounts, delivering safe, efficient, and high-quality project execution.

Medina has developed a results-driven methodology that blends hands-on field expertise with proven industry best practices. His leadership emphasizes operational excellence, accountability, and continuous improvement, ensuring consistent performance across complex industrial environments.

Committed to developing strong teams, Medina actively mentors employees and invests in building future leaders. His dedication to client service, project excellence, and workforce development makes him a valuable asset to both our organization and the partners we serve.

John Graves

Senior Turnaround Manager

With experience spanning decades in scaffold erecting and management, John Graves is a valuable addition to Bartlett Group. Starting his career as a laborer, Graves’ unwavering drive and determination propelled him up the ranks while gaining extensive knowledge and expertise in the field.

His leadership and project management skills have been instrumental in successfully completing various jobs. Graves oversees critical operations and orchestrates complex turnaround projects as the senior turnaround manager. His experience, knowledge, and commitment to safety ensure that projects are executed with precision and excellence.

Jc Adams

TAR/Combined Services Construction Manager—GSCS

Jc Adams is an accomplished construction manager with a strong focus on industrial services and a proven track record of building a robust safety culture within organizations. With decades of experience in the industry, he has successfully led and managed a wide range of construction projects, ensuring the highest safety and quality standards.

Adams fosters a positive and collaborative work environment, empowering teams to achieve their best. He is dedicated to developing and mentoring employees, recognizing that a strong and motivated workforce is essential for project success.

Chris Ramirez

Construction Manager

Chris Ramirez is a highly accomplished Construction Manager known for efficiently overseeing large-scale SIPA maintenance/capital projects involving hundreds of employees on lump sum and T&M contracts. With a keen eye for financial management, he successfully handles all P&L aspects at client facilities, ensuring projects stay within budget. Ramirez’s focus on quality control is evident through his implementation of robust quality assurance measures. He also enhances site operating rhythms to support increased project scope while maintaining safety and efficiency effectively. Client-focused and innovative, Ramirez actively engages with clients to identify cost-saving opportunities using cutting-edge technologies. His comprehensive understanding of project controls, estimates, and safety procedures allows seamless collaboration with cross-functional teams, making him a valuable asset in the construction industry.

Billy Hamm

Construction Manager

Billy Hamm is a seasoned professional with two decades of experience in the petroleum and chemical industries, starting as a carpenter and ascending through various roles. His success as a manager stems from his unwavering passion for safety, on-time project completion, and staying within budget. Possessing exceptional organizational and communication skills, Hamm has effectively led major projects, turnarounds, and maintenance operations. His strong safety culture and coordination abilities have enabled him to build robust client relationships, while his talent for team-building keeps his motivated teams focused on surpassing project goals. Believing in the growth of employees, Hamm actively mentors them to succeed in their crafts, making him a valuable asset in the industrial sector.

Jeremy Chatagnier

Construction Manager—Big Sky

Jeremy Chatagnier, our Big Sky Construction Manager, brings over two decades of experience in the construction industry. For the past ten years, he has led soft craft activities on major projects, including routine maintenance, special projects, and turnarounds at sites such as the Salt Lake City, Mandan, and Dickinson Marathons, as well as the HF Sinclair and Contango Wyoming projects.

Ken Kelch

Construction Management

Kelch, a seasoned Mechanical Construction Manager at GSCS, oversees West Coast turnarounds and construction projects. With a focus on quality, timeliness, and budget adherence, Ken fosters a collaborative team environment. Beyond his technical expertise, he enjoys the challenges of the industry and the satisfaction of witnessing team success.

Jeff Dillow

Soft Crafts Construction Manager

Jeff Dillow is a third-generation union carpenter with a passion for building—both structures and relationships. With decades of field experience, Jeff brings invaluable expertise to craft management and client partnerships. Known for his strong negotiation skills and an extensive network across the eastern United States, he is dedicated to shaping the future of the industry.