Our Team

Meet Our Team

Sean G. Frey

Mark Rawson

Reece Dassinger

Brian Biersdorff

Matt Escola

Dalton Grisell

Cameron McGifford

Trevor Plummer

Greg Escola

Ayme Renslow

Logan Jorgensen

Nicole Johnson

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Sean G. Frey P.E., LEEP AP

Principal

BIO
Sean enjoys working hands on with his team to ensure they have all the tools they need to create quality work while doing it efficiently. Sean works diligently to push others to realize their full capabilities and be driven problem solvers. When he is not at the office, you can find Sean up in the Sierra Nevada mountains riding his mountain bike, hiking, or camping with his family.

ROLE
Sean’s responsibilities are project acquisition, design overview, supervision and training of production staff, specification writing, report generation and construction administration.

Professional Affiliations
American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE)
Order of the Engineer

Mark Rawson P.E.

Project Engineer

BIO
Mark is a problem solver working to meet the client’s needs. He enjoys a challenging project that pushes the teams’ thoughts and expectations. Working from schematic design through final construction, Mark enjoys the relationships with the entire design and contracting team to ensure the best final product for the client. Outside of the office, Mark is constantly mountain biking, skiing, playing hockey, working on home projects, and spending time with his family.

ROLE
Mark’s involvement in projects range from load calculations through Trane Trace 3D Plus, equipment selection, drafting, control diagrams, specification writing, energy modelling, cost estimates, plan review or report generation, construction administration, and project management.

Professional Affiliations
American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE)
Order of the Engineer

Reece Dassinger P.E.

Project Engineer

BIO
Reece Dassinger was born and raised in Reno Nevada. His passions include bowhunting, wakeboarding at Lake Almanor, Black Rock City, swing dancing and skydiving. Reece enjoys the problem-solving process of design in order to implementing solutions that cater to the owner, contractor, and longevity of the building. He graduated from the University of Nevada with a Bachelor of Science in mechanical engineering and a minor in business administration.

ROLE
Reece’s involvement in projects include plumbing design, unit/fixture selections, drafting, specification writing, and plan review.

Professional Affiliations
American Society of Plumbing Engineers

Brian Biersdorff E.I.

Project Manager

BIO 
Brian likes to spend his free time in the outdoors either mountain biking, rock climbing, fishing or skiing, usually with his dog Bear. While not in the outdoors Brian likes to work on house projects and enjoy watching movies. He grew up in Nevada City where he was able to explore and find my passion for the outdoors.

ROLE
Brian’s involvement in projects range from project management, load calculations, unit selection, drafting, control diagrams, specification writing, energy modelling, cost estimates, report generation, and construction administration.

Professional Affiliations
American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE)

Matt Escola E.I.

Design Engineer

BIO 
Matt loves learning about how things work and putting things together. He likes to learn about how mechanical and plumbing equipment function and work together to make a complete system. He likes designing systems to meet the customers’ needs with concern for practicality of installation. Outside of work he enjoys working on cars and building things in his garage. When time permits, he likes to get away from the city to go exploring, off-roading, fishing, and camping. He is an avid national park explorer and tries to visit as many as possible.

ROLE
Matt’s involvement in projects range from the design of plumbing and mechanical systems, coordinating design with other disciplines. Matt also performs engineering calculations including heat load calcs, gas flow and pressure drop calcs, liquid flow and pressure drop calcs.

Dalton Grisell

Design Specialist

BIO 
Dalton is a Nevada native who outside of the office, Dalton enjoys spending time outdoors, with loved ones whether it’s going on hikes or playing video games. Being a former college baseball player throughout his college career, Dalton is passionate about working out and loves to lift weights.

ROLE
Dalton’s involvement in projects range from the design of mechanical systems, running load calculations, performing miscellaneous engineering calculations, and preparing official company construction documents.

Cameron McGifford

Design Specialist

BIO 
Cameron loves looking for new experiences; travelling to areas he has never been before, learning about new technology, and meeting new people. He enjoys being on construction sites, where he can help solve issues right in front of him and streamline work with contractors. After work, he enjoys escaping to the outdoors, appreciating the plants and wildlife. Cameron finds himself right at home in Reno, with its lakes, forests, and deserts all within a short drive.

ROLE
Cameron creates CAD drawings, runs calculations, selects equipment, and performs duties as a part of the construction administration of projects.

Trevor Plummer

Designer I

BIO 
Trevor has a passion for the design process, as well as a keen interest in learning about new equipment and its advantages for plumbing systems. He holds a Bachelor of Science in Mechanical Engineering from the University of Nevada, Reno, and has achieved the rank of Eagle Scout. When he’s not working, Trevor enjoys snowboarding, mountain biking, camping, and embracing the beauty of the outdoors.

ROLE
Trevor’s involvement in projects includes plumbing design, drafting in AutoCAD and Revit, and calculations for equipment supporting the plumbing system.

Greg Escola E.I.

Designer EI I

BIO

Greg enjoys discovering innovative solutions to challenges
and limitations. He has a passion for understanding how systems function and
how they can be enhanced with the latest products and technology. In his
leisure time, Greg loves to visit Tahoe whenever possible, engaging in
activities like paddleboarding, camping, and snowboarding. When he’s at home,
he prefers to stay active by working out and enjoying video games.

ROLE

Greg is involved in a variety of roles, encompassing both residential and commercial projects in HVAC and plumbing design. Specifically, his responsibilities include performing load calculations, selecting equipment, designing systems, conducting plumbing calculations, and drafting plans.

Ayme Renslow

Administrative Assistant

BIO

In her leisure time, Ayme fully embraces the opportunities available in Reno and its nearby areas. She loves spending time outdoors whenever she can and tries to enjoy a day at the lake whenever possible. Additionally, she appreciates spending time with her daughter!

ROLE

Ayme is a crucial member of our office, providing essential support to the SGF Team. She manages accounting and HR responsibilities, leads marketing initiatives, and shares her expertise during the initial phases of our projects to ensure smooth and efficient operations for both the SGF team and our clients. Her aim is to cultivate positive and productive relationships between the organization and external partners.

Logan Jorgensen

Designer I

BIO

Logan treasures every moment with his family. As a proud new dad to a baby boy, he’s excited to create lifelong memories with his wife and little one. A lover of the great outdoors, Logan enjoys traveling, hunting, and embracing nature’s beauty. Always eager to learn, he’s constantly honing his skills and exploring new opportunities for growth. Life for Logan is all about adventure, connection, and personal development.

ROLE
Logan specializes in crafting detailed technical drawings and designs for a wide range of mechanical and plumbing systems. His expertise spans from designing HVAC systems and specialized piping layouts to performing energy load calculations and selecting the optimal units for efficient performance.

Nicole Johnson

Project Coordinator

BIO 
In addition to her hands-on experience, Nicole is pursuing a Bachelor of Science in Business Administration with a focus on accounting, after earning an associate’s degree in science. Outside of work, she enjoys spending quality time with her two daughters (aged 7 and 12). Nicole is an avid enthusiast of outdoor activities, such as running, camping, hiking, and mountain biking. She loves traveling to new places and sharing new experiences with her daughters, as well as engaging in water sports and lake days. Nicole also values time spent with her friends and family, making those moments an important part of her life.

ROLE
Nicole Johnson is a dedicated project coordinator with seven years of experience in the construction industry. She enjoys assisting project engineers from the initial stages through to the final phases, helping to ensure smooth execution and successful outcomes. Passionate about problem-solving, Nicole enjoys collaborating with her team at SGF to find innovative solutions for various aspects of the business.