Our Team

CDI-ServicesCDI takes great pride in the strength of our team. Since CDI was established in 1995, we have grown to include close to three hundred employees with offices and support staff across the western United States. 


While this is a phrase many companies use commonly, we mean it!  CDI is an employee-driven company that works on the principles of individual accountability and teamwork. We genuinely believe in empowering employees to do what it takes to get the job done right – every time! Our team of highly skilled employees works with our new team members to provide an inclusive work environment where everyone delivers outstanding work and is appreciated accordingly.

Meet Our Executive Team
Meet Our Executive Team

Jim DeGrado | President/CEOJim DeGrado


After graduating from Colorado State University, Jim DeGrado founded CDI in 1994.  Jim coupled his prior experiences from working in the family landscape contracting business in rural Colorado with his formal education in marketing, construction management and environmental studies to start his new venture.

Jim has extensive field experience in every aspect of CDI’s service offerings.  He has personally performed and trained at every position at CDI.  Extremely active in day-to-day operations, Jim brings guidance, inspiration and dedication to the fast-paced atmosphere of a company experiencing healthy growth.

By focusing on innovation, we’re able to provide our clients with the latest in techniques, processes and technologies, and to offer cost effective solutions.| Jim DeGrado

 jimd@cdi-services.com |  (303) 471-1522 ext. 206 |

Chris Castelano | VPChris Castellano, CISEC

Vice President

Chris has been employed at CDI since 2000. After graduating from the University of Northern Colorado, he took a position in CDI’s Landscape/Maintenance Division. He quickly ascended to Site Superintendent, then to Project Manager before transferring to the Erosion Control Division and earning the title of Division Manager.

After just three short years of his successes as Division Manager, Chris was tasked to tackle the oil & gas boom on the western slope of Colorado by serving as the Rifle Office Branch Manager of what became the fastest growing division of CDI. Chris is now Vice President and responsible for the direction of eight separate divisions at CDI.

 chrisc@cdi-services.com | ; |  (303) 471-1522 ext. 203 

Trish Ryno | ControllerTrish Ryno


Trish Ryno is the Controller for CDI. She manages the Accounting Department staff. Trish has been with CDI since 2007, and has 17 years of construction accounting experience. She lives with her husband and five children in the Denver Metro area and enjoys the outdoors, especially fly-fishing.

 trishr@cdi-services.com | ; |  (303) 471-1522 ext.216

Meet Our Management Team
Meet Our Management Team

IMG_7174artPNGMark Voss

Erosion Control Division Manager

Mark Voss has spent the past 11 years in the Colorado Stormwater industry.  In 2005, Mark was an inspector for Paradigm Engineering, performing routine Stormwater inspections for residential and commercial projects.  He joined Down to Earth Compliance (DTEC) in 2007 and spent the next five years as the operation manager, followed by two years overseeing business development and estimating.  In August, 2013, Mark made the transition to the CDI team and currently serves as one of the division managers for the Sedalia based Erosion Control and Reclamation division.

 MarkV@cdi-services.com | ; |  (303) 471-1522 ext. 231

ZaccZacc Wair, CISEC

Civil & Soil Management Division Manager

Zacc began his career at CDI after graduating high school in 2004, taking a position in the landscape maintenance department running a lawn mower. Having a knack for construction management, he quickly climbed the ranks from Foreman to Superintendent in the Erosion Control Division then to an Estimating Position before settling into Division Manager of Erosion Control in 2009.

After the explosive growth of the housing market in 2013, Zacc was tasked with bringing on a new service offering to CDI’s already robust portfolio and began the Civil & Soil Management Division. Zacc and his team are responsible for management and hauling of hundreds of thousands of yards of soil each year.

 ZaccW@cdi-services.com | ; |  (303) 471-1522 ext. 224

Standord SliferStanford Slifer

Lining Division Manager, Watersaver

After earning a Bachelors of Science degree in Business at Colorado State University in 1990, Stan began his career at Watersaver Company. Watersaver was the oldest, most-experienced geomembrane fabrication company in the US. In 2012, CDI acquired Watersaver Company and challenged Stan to integrate Watersaver into CDI’s aggressive Geomembrane Liner Division.
Since the acquisition, CDI has increased its liner installation presence throughout the rocky mountain and central regions of the US with installation operations headquartered in CO, ND and TX. Stan is the Manager of the Liner Division.

 Stan.Slifer@cdi-services.com | ; |  (303) 471-1522 ext. 230

AaronAaron Moya

Lining Operation Manager

Aaron began with CDI as the Operations Manager for the liner fabrication facility in January of 2014.  Aaron has since transitioned to the field installation Operations Manager.  Aaron brings a blend of technical expertise and 17 years of operations management to CDI’s Liner Division.

 aaron.moya@cdi-services.com | ; |  (303) 471-1522 ext. 235