Of course our engineers are well educated and heavily qualified. But mostly, our staff is chosen for their unconventional intelligence, communication ability, and positive attitude. If this describes you, and you want to join us, send us a message!
J. August Hasz, P.E.
President & Principal Engineer
August has overall responsibility for the day-to-day operation of the company, oversight of all scopes of work REG provides and detailed engineering including mechanical system design, structural systems, energy auditing, commissioning for new and existing buildings, building simulation, and solar energy analysis. August’s engineering mastery, creative attitude, and innate sense for completing complex projects on time and budget have allowed him to compile an impressive track record of successful projects at REG over the course of more than a decade. His project experience includes passive heating and cooling strategies, active solar thermal and solar electric systems, ground source heat pumps, and radiant cooling systems. His past experience includes fundamental research into glass and ceramic materials, water pump design, and water and wastewater plant operation. August also manages REG’s staffing, project scheduling and budgeting, risk management and multi-discipline project delivery.
August earned a Bachelor of Science degree in Glass Engineering Science from the New York State College of Ceramics at Alfred University, with honors. He is LEED accredited, NCEES registered, and a member of ASHRAE. He is a licensed Professional Engineer in Colorado, California, Massachusetts, Montana, New York, New Jersey, Texas, Utah, Vermont and Wyoming.
Dodson Harper, P.E., S.E.
Vice-President & Principal Engineer
Dodson leads the Structural Engineering Department at Resource Engineering Group as well as oversight of MEP systems engineering. His responsibilities include structural design, forensic analysis, SMEP project management and managing staffing, project control (schedule and budget), risk management, hardware/software acquisition and maintenance, and in-house training for REG. Dodson’s ability to understand the big picture view of projects has built a long history of on-time/on-budget projects for over 10 years at REG. His project experience includes residential, commercial, and institutional spaces for both new construction and remodels. In addition to designing with conventional steel, wood, and concrete systems, Dodson is a recognized expert in alternative building systems such as straw bale and clay-straw techniques. His extensive contracting and framing experience is invaluable when construction problems need to be solved.
Dodson earned a Bachelor of Arts in Mathematics with Honors from Westminster College in Fulton Missouri, and a Bachelor of Science in Civil Engineering with Honors from Colorado State University. He is a registered Professional Engineer in Colorado, Florida, and Vermont, and a registered Structural Engineer in Idaho and Utah.
Zachary Gustafson, P.E.
Senior Project Engineer
Zack is an engineer with a unique background and a deep knowledge base of all things mechanical. His ability to puzzle through difficult problems makes him an invaluable contributor to complicated building projects, often by finding elusive but simple solutions. In addition to being a capable and clever system designer, he provides building simulation, energy auditing, and commissioning services. In his previous work as an acoustical engineer, Zack developed consumer products including microphone and audio systems and was named on four patents. Part of Zack’s practical knowledge of mechanical systems comes from his experience as Facility Manager of a remote lodge with 15 buildings. His skills also include engine repair, bicycle and motorcycle construction, data/wifi/phone systems, off-grid living, and other assorted wizardry.
Zack holds a Bachelor of Science degree in Mechanical Engineering from Calvin College in Michigan. He is a registered Professional Engineer in Colorado.
Arliss Merrell, P.E.
Senior Project Engineer
Arliss is an engineer with extensive experience in the HVAC Engineering industry. His background in construction and engineering has supported a wide range of projects with municipalities, K-12, higher education and residential clients over the last 10 years. Arliss also has firsthand experience with high-end HVAC systems for art museums and radiant cooling. Some areas of interest include chilled water plant design, heating water plants, natatoriums, ground source, solar thermal, VRF systems and ventilation rate procedures. Arliss provides clients with innovative solutions focused on reducing their utility and operational costs and improving their operations.
Arliss earned a Bachelor of Science degree in Mechanical Engineering from Clarkson University. Arliss is a NCEES-registered Engineer-in-Training. He is a registered Professional Engineer in the state of Colorado.
Jonny Holton, E.I.T.
Project Engineer
Jonny designs mechanical and plumbing systems for a wide variety of building types. His experience includes ground source heat pump system design, radiant cooling, hydronic heating and cooling with air-source heat pump systems, high-efficiency boiler retrofits, plumbing designs for historic building renovations and luxury modern projects, mechanical system design coordinated with off-the-grid power generation, and commissioning of complex building systems. Jonny’s responsibilities include development of software tools for accurate system sizing, energy analysis using the EnergyPlus modeling platform, and 3D intelligent modeling (BIM) of commercial and residential buildings. Previously, Jonny worked as a project manager in the medical device manufacturing industry. His positive attitude and collaborative mindset are invaluable.
Jonny earned a Bachelor’s Degree from the University of Colorado, Boulder. He is a member of ASHRAE, and a NCEES-registered Engineer-in-Training.
Hannah Malloy
Project Engineer
Hannah provides structural engineering and project management. She specializes in engineering resource efficient structural systems for a variety of building types including multi-family affordable housing, single family and luxury residential projects. Hannah is adept at finding simple solutions to complex engineering challenges. Her previous experience in aerospace engineering, retrofitting interiors for the Boeing 777 and Airbus A350, enabled her to travel and collaborate with engineers and manufacturers from many different countries and cultures. She also worked as a researcher investigating seismic hazards in the deserts of New Mexico near the Los Alamos National Lab. Hannah's diverse engineering background provides her with the perspective to be a flexible and creative problem solver.
Hannah earned a Bachelor of Science in Civil / Structural Engineering from the University of Vermont.
Drew Larson, E.I.T.
Project Engineer
Drew began his engineering career working at a structural engineering firm in the Roaring Fork Valley engineering residential projects. He then spent over a decade as the Director of Research for the Aspen Sports Medicine Foundation. Here he published numerous peer reviewed scientific articles while broadening and sharpening his engineering skills solving unique problems. He presented this research all the way up to the international level and served as a reviewer for biomedical and orthopedic journals. Throughout this time, Drew also worked with biomedical companies on the design of medical devices and implants for the field of sports medicine.
In addition to experience framing homes in Aspen, Drew recently designed and built his family’s home here in Crested Butte—he is familiar firsthand with the challenges of construction. Drew is excited to be bringing his career full circle at REG and once again providing structural engineering. His responsibilities include design of wood, steel, and concrete structures, as well as construction assistance.
Drew earned a Bachelor of Science degree in Mechanical Engineering from the University of Kansas. He loves living, working, and playing in the Gunnison Valley with his wife and three boys.
Cal Fenerty
Project Engineer
Cal designs plumbing and mechanical systems and performs embodied energy analyses for a broad range of new construction and retrofit projects. He was raised on the jobsite helping his father with stove, fireplace, and masonry heater installation and maintenance. After earning his degree, Cal gained invaluable field experience working for a HVAC systems contractor installing mechanical equipment and fabricating ductwork. Cal’s professional interests include, variable speed pumping, passive thermal storage, wastewater heat recovery, district heating/cooling systems, and creative provisions for cold climate refrigerant-based heating. He has a lifelong familiarity with intense beauty of the Rocky Mountain high country and the punishing conditions found therein. Cal strives to produce elegant, robust solutions and to expand upon his knowledge base constantly.
Cal holds a Bachelor of Science degree in Mechanical Engineering from California Polytechnic State University, San Luis Obispo.
Tosin Adesina
Project Engineer
Tosin provides electrical design for commercial and residential buildings. His background includes, electrical engineering, cost estimation, project management and construction administration for commercial, residential and industrial projects. Tosin spent 3 years in a design build firm in the greater Chicago area where he had the opportunity to manage complex electrical construction projects, perform value engineering, create BIM designs, create schedules and cost decisions. Tosin’s construction experience provides a strong platform to envision the building when designing for maximum efficiency.
Tosin holds a Bachelor of Science degree in Electrical Engineering and a Master of Science in Electrical and Computer Engineering from Purdue University.
Chris Pearson, E.I.T
Project Engineer
Chris’s responsibilities include building energy modeling, mechanical and plumbing system design, and building commissioning. Chris has a background in product development and manufacturing with a focus on solar thermal energy and sustainable outdoor industry products. His experience designing and testing high efficiency solar thermal collectors has given him a deep understanding of the thermodynamic and heat transfer principles used in building energy modeling software and mechanical equipment sizing. His background also includes HVAC and hydronic system design for industrial buildings integrating solar thermal, geo-exchange and gas-fired boiler sources. Chris’ hands on experience leading construction teams through the installation of systems gives him perspective on the real-world challenges that installers face when translating designs to reality.
Chris earned his Bachelor of Science in Mechanical Engineering from the University of Colorado, Boulder. He is a registered NCEES Engineer-in-Training.
Jordan Brennise, P.E.
Project Engineer
Jordan is a structural engineer who designs for a full spectrum of buildings. Jordan started his career designing power transmission lines and solar farms, which grants him a unique perspective within the building industry. In his previous experience as an engineer, Jordan become well acquainted with renewable resource-based design, budget and project management, project scheduling, and coordinating with contractors and field crews. He also gained extensive experience in foundation design, as well as wood and steel transmission structure design.
In addition to working in the energy and utility industry, Jordan has also designed and managed an addition to his own home in Crested Butte South. This experience deepened his understanding of the various facets that go into residential construction - as well as enhanced his passion for well-designed, high-performance spaces. At REG, Jordan works closely with his colleagues to create seamless and efficient designs. Jordan was born and raised on the western slope of Colorado and enjoys working in and contributing to the community in which he loves to live.
Jordan holds a Bachelor of Science degree in Civil Engineering and a Master of Science degree in Civil/Structural Engineering, both from the University of Colorado, Boulder. He is a registered Professional Engineer in Colorado and Texas. When not designing buildings, Jordan enjoys spending time hiking, camping, fishing, skiing, and doing all things outdoors in the Gunnison Valley with his wife, son and dog.
Jack Durkin, E.I.T.
Project Engineer
Jack designs electrical systems including power and lighting here at REG. He gained experience working at a firm that specializes in healthcare and laboratory facilities. He worked on complex electrical and lighting systems for a variety of complex conditions including operating rooms, MRI suites, research laboratories as well as the messy and challenging world of renovations. Some of Jacks interests include sustainable energy, renewable systems engineering, lighting design, and off-grid power.
Jack earned a Bachelor of Science in Electrical Engineering from the University of Akron. He is a NCEES-registered Engineerin-in-Training.
JT Ryan
Engineering Drafter
JT brings experience from the field with robust hands-on construction and project management skills. He has spent years in the trades focused on building natural, high-performance homes, specializing in straw-bale and other super-insulated wall systems. Following the design and build of his family’s own energy efficient home in Gunnison, CO, JT pivoted to managing playground and public art projects for a manufacturer of sculptural concrete. Inspired by the creativity of this space, coupled with a desire to create better buildings, he began pursuing a Master of Architecture. His interdisciplinary experience, appreciation of fine craft, and eye for detail make him an asset to the design team on any project.
JT earned a Bachelor’s Degree from the University of Vermont and is currently pursuing a Master of Architecture at the University of Colorado, Denver.
Jim Terhune
Engineering Drafter
Jim provides engineering drafting for mechanical, electrical, plumbing, and structural systems. In addition to applying his time designing residential homes, Jim has a background in the aerospace industry with over two decades of experience in design and manufacturing. His skill set includes modeling commercial and residential projects in Revit, as well as CNC programming, 3D CAD model designs, and drafting of technical blueprints.
Jim has also been instrumental in developing computational tools that aid in the standardization of hydraulic cylinder manufacture/repair in the mining industry.
Heather Kelley
Office Manager
Heather handles REG’s day-to-day essentials, including bookkeeping, payroll, receivables, payables, contract administration, travel and phone plans, PE registration, continuing education, and the other behind-the-scenes activities that make sure that the rest of us actually have jobs. In addition to being a whiz with financial software, the main tools of her trade are her quick wit and endless patience.