Our Team

Brent Scarbrough

Mr. Scarbrough serves as a Partner of Frontier. He holds a master’s degree in Civil Engineering from the University of Colorado and is a certified Professional Engineer in the State of Colorado, license # 42221. Mr. Scarbrough has continued his education in fluvial geomorphology and holds the following certifications that will be extremely beneficial to this project:

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  • Designing for Aquatic Organism Passage (AOP) at Road-Stream Crossings – April 2012 
  • River Restoration and Natural Channel Design-September 2011 
  • River Assessment and Monitoring-August 2010 
  • River Morphology and Applications – March 2010 
  • Applied Fluvial Geomorphology -November 2009 
  • Floodplain Hydraulics and Encroachment Analysis Using HEC-RAS/HEC-GeoRAS, May 2008 
  • Stormwater Planning and Design Using EPA SWMM 5.0, December 2007

With over nineteen years of experience in environmental design and construction, Mr. Scarbrough has overseen the successful completion of multiple stream restoration projects from their design and permitting through construction. Additionally, he has managed the installation of multiple bottomless arch culverts as part of the AOP culvert replacement program for the US Forest Service as well as the installation of multiple large culvert crossings on active channels. Mr. Scarbrough has managed numerous successful projects on local streams including: the Arkansas River, Animas River, Big Dry Creek, Little Dry Creek, South St. Vrain, North St. Vrain, Cherry Creek, Cabin Creek, Sand Creek, Clear Creek, Little Vasquez Creek, Grange Hall Creek, Rock Creek, Coal Creek, Trout Creek, Seven Mile Creek, Trail Creek, Tanglewood Creek, Willow Creek, Four Mile Creek, Fourmile Canyon Creek, Bear Creek, North Empire Creek, Greenwood Gulch as well as numerous smaller tributaries.

Clay Combrink

Mr. Combrink serves as the River and Floodplain Restoration Specialist for Frontier Environmental Services, Inc., and has over twenty years of experience in environmental construction and stream restoration. Mr. Combrink holds a bachelor’s degree in Biology and Botany from Colorado State University, has personally installed numerous in stream wood and rock structures, and has successfully managed multiple stream restoration projects including: pedestrian bridge installation, box culvert installations, floodplain creation, and riffle, pool, run sequencing throughout numerous watersheds.

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Mr. Combrink has completed Applied Fluvial Geomorphology – March 2018, has attended numerous urban stormwater management courses, has specific experience with streambank stabilization, soil remediation, large scale reclamation, revegetation and riparian restoration.  He has supervised the majority of projects that he has been on since joining Frontier in 1991, including the St. Vrain Creek, Upper Coal Creek, and Ingram Gulch projects.  Mr. Combrink is also a certified Wetland Delineator.

Jason Delaney

Jason will serve as the Landscape Revegetation Specialist for Frontier. Mr. Delaney came to Frontier after previously owning his own Landscape and Irrigation company for over 10 years. Mr. Delaney will be in charge of soil conditioning, seeding, mulching, and all planting operations. He has provided his services throughout the Front Range and Mountain regions. Most recently he has been in charge of all of the revegetation efforts on our projects for Fourmile Creek, Coal Creek, and the Little Thompson.