History of a Quality Company

It’s our belief that quality speaks for itself. We commit to provide top-grade materials, expert service, and unmatched customer satisfaction every time – so your projects shine. Since 1938, we’ve been adding our stamp of quality on projects across the Intermountain West. From sand and gravel, asphalt, masonry, and ready-mix concrete supply to earthwork, utility, demolition, and paving services, we are your quality project partner. Sunroc proudly supports the needs of state and city agencies, professional contractors, and serious do-it-yourselfers in Utah, Nevada, Wyoming, and Idaho (DBA Depatco in Eastern Idaho).

Fulfilling Success Through Quality, Service, And Community

We owe our success to the high-caliber customers and communities we’ve been privileged to work with. At Sunroc, our mission is building a better community, and we will continue to exceed our clients’ expectations through quality products, outstanding service, and contributions to the communities in which we serve.

Our Values

We Value People

We emphasize the importance of long-term goals, professional development, and educational opportunities.

Our Word is Our Bond

Commitment and trust are attributes that simply cannot be compromised.

Always Give a Full Measure

Are you giving a full measure? We commit to answering that question with a confident yes.

We Continuously Improve

We aim to be the best in the business and show that through our ingenuity.

Depatco construction team members
we continuously improve

Our Values

Depatco construction team members

We Value People

We emphasize the importance of long-term goals, professional development, and educational opportunities.

Our Word is Our Bond

Commitment and trust are attributes that simply cannot be compromised.

Always Give a Full Measure

Are you giving a full measure? We commit to answering that question with a confident yes.

we continuously improve

We Continuously Improve

We aim to be the best in the business and show that through our ingenuity.

Office Locations

      Diversified Services

      Building confidence each day by providing the infrastructure essentials your project requires.


      Mark Elder


      Mark Elder is president of Sunroc Corporation, where he oversees the operation and management of the company. Mark started his career at Geneva Rock Products in 2004 and transferred to Sunroc in 2006. In 2019, he was made Vice President of the Idaho Region of Sunroc, where he was instrumental in expanding the company from its small beginnings in Boise to having operations in construction and material services from Boise to Idaho Falls. Mark earned a bachelor’s degree in construction management from Brigham Young University, and a master’s degree in business administration from Boise State. Mark currently participates as a board member in the Idaho AGC. He enjoys camping and spending time outdoors with his wife and family.

      Mark Wimmer


      Mark is Sunroc Corporation’s vice president of construction. In this role, he is responsible for overseeing construction services. Mark’s extensive construction background began with valuable field experience in survey, equipment maintenance, and operations, later progressing to being an equipment operator before moving into estimating and construction management. Mark has a love and passion for the construction industry and has always been drawn to and fascinated with earth moving machinery. Mark maintains his professional civil engineer license, as well as E-100 and B-100 qualifiers for Utah and class-A general engineering contractor’s license in Nevada. He received a bachelor’s degree from Utah State University. When off the job, Mark enjoys snowmobiling, four wheeling, and building projects at home. He currently resides in Salem, Utah with his wife and children.

      Adam Cook


      Adam Cook is the Vice President of Construction Materials at Sunroc, primarily focused in the Utah and Wyoming areas. He brings with him 20+ years of experience in ready-mix concrete and aggregates. Adam began at sister company Geneva Rock, where he held various positions ranging from Dispatcher to Business Process Department Manager. He later continued his career at Sunroc as an Area Manager of Construction Materials. Adam received bachelor’s degrees in marketing and finance as well as an MBA from the University of Utah. He has been actively involved with the AGC, most recently serving on the AGC Workforce Development Committee. Adam is married to Heather, and together they have three children: Emilee, Mackey, and Garrett. The family resides in St. George, Utah, where they enjoy spending time outdoors, whether it’s hiking, mountain biking, or exploring hills with Adam’s jeep.

      Brent Turpin


      Brent Turpin is the Vice President of Idaho at Sunroc, overseeing both Construction Services and Materials. He brings 15+ years of experience to his role, starting as a field engineer at sister company WW Clyde before progressing through various roles at other companies. Prior to his current role, Brent served as an Area Manager and then Division Manager at Sunroc. Brent holds a bachelor’s degree and an MBA in Construction Management from Boise State University. He is active in the AGC and currently serves on the Boise State Construction Management Industry Advisory Board. Brent was drawn to the construction industry because of his love for working outdoors and seeing the physical evidence of his work. Originally growing up on a family farm in Burley, Idaho, he now lives in Meridian and enjoys golfing and spending time outdoors with his family.


      When you start your career with Sunroc, you join a family of hard working men and women who value integrity, safety and quality. Our employees are an integral part of our mission, which is to Build a Better Community. As a part of the Sunroc team, your work matters, and you matter. Come be part of something great.


      A Culture of Safety

      Safety chat for operator on job site


      Protecting the health and safety of employees and those involved in our projects has always been – and will always be – the most important part of our work. We work smart so we can all go home safe. Our commitment to employee-driven safety revolves around four directives:

      • Establish Safe Working Environments for All
      • Remember Safety is a Responsibility We Share
      • Encourage Employees to Communicate Concerns
      • Recognize and Reward Safe Work
      Learn More


      We take our responsibility for protecting the environment seriously. Our commitment to build a better community includes: being resource efficient, minimizing impact on the natural environment, and eliminating unnecessary energy waste from our equipment and operations.

      We believe reduce, reuse, and recycle is the best policy. Sunroc diverts millions of tons of construction waste from landfills each year. Asphalt and concrete materials are crushed and filtered to create new aggregate for recycled products, and hundreds of thousands of gallons of oil have been recycled.

      Sunroc maintains strict idling and driving standards for all company vehicles and operational machinery, helping us eliminate unnecessary pollutants from our communities.

      Recycled concrete and asphalt products are available to all our customers. We make it that much easier for our clients to build sustainably.

      Sunroc maintains sustainability standards for offices and jobsites, including a Construction Waste Management plan and a Construction Activity Pollution Prevention plan.

      Learn More


      Latest News from Sunroc

      Excerpts from our newsroom. Keeping our clients, employees and community in-the-know.

      Russell Leslie Retires; Adam Cook and Brent Turpin Promoted

      Russell Leslie Retires After 35 Years  Sunroc is pleased to announce a series of leadership transitions following the retirement of Russell Leslie, Vice President of […]

      We Value People: Lance Jensen

      As an equipment operator at Sunroc, Lance Jensen is responsible for helping get the footings set beneath buildings on job sites.  “I drive down the […]

      Increased Safety with Fleet Safety Cameras

      Sunroc has invested in safety cameras for its fleet of vehicles to help prioritize the well-being of its employees and the community at large.  After […]

      Sunroc Announces Key Leadership Changes

      In response to the evolving needs of the construction industry, Sunroc has implemented critical leadership changes to ensure sustained growth and development.  Construction Services  Dave […]

      We Value People: Jesus Estrada

      Jesus Estrada found his calling in construction in large part because of his father’s influence.  “My dad, Ignacio, has been working at Sunroc for over […]

      3rd Annual Love Idaho Event Gets Boost from Sunroc

      Last month, Sunroc partnered with local businesses once again for the 3rd Annual Love Idaho event at LakeView Park in Nampa, Idaho. Sunroc proudly donated […]

      We Value People: Natalie Sumsion

      As a project engineer at Sunroc, Natalie Sumsion’s role extends far beyond the realm of spreadsheets and blueprints—she is helping transform the landscape of construction […]

      We Value People: Dan Hollist

      Dan Hollist stands out as a leader with a strong work ethic and a passion for his job. With 22 years of experience, including 16 […]

      We Value People: Jayden Cowen

      When Jayden Cowan first started working at the Sunroc block plant in St. George, Utah, he didn’t know just how important the job would be […]

      Build Confidently With Sunroc