Stream Corridor Assessments

Assessment of channel, stream bank and floodplain stability. Evaluation of proper functioning condition and riparian-wetland restoration…

Wildlife Habitat Assessment

Baseline surveys and habitat suitability assessments for threatened/endangered species and other federal- or state-listed species of special…

Vegetation Monitoring

Use of various vegetation transect and plot methods for rare plant surveys, noxious weeds inventories, and monitoring temporal changes in plant…

Wetland Delineations

Identification and mapping of jurisdictional wetland boundaries in accordance with US Army Corps of Engineers delineation manuals and technical…

Playa Delineations

Delineation of playa OHWM boundaries per the US Army Corps of Engineers Delineating Playas in the Arid Southwest technical guidance.

Aird West Channel Delineations

Delineation of Arid West intermittent and ephemeral stream channels per current US Army Corps of Engineers OHWM standards and…

NEPA Compliance and Documentation

Environmental baseline documentation, alternatives analysis, impact assessments, mitigation and monitoring commitments for EA’s and EIS’s.

Resource Management and Planning

Preparation of resource management plans and conservation plans for private and public…

Permitting Approvals and Mitigation

US Army Corps of Engineers Section 404 permitting, alternatives analysis, mitigation design and post-project performance monitoring.

Multispectral Imagery Remote Sensing

Large-scale habitat mapping and resource inventories using airborne high-resolution multispectral imagery and other remote sensing data.

Migratory Bird Assessments

Identification of migratory bird breeding, nesting, staging and forage areas for Corps of Engineers Section 404 permitting compliance.


Frontier Corporation USA is a Utah-based company offering professional consulting services for a wide-range of complex environmental issues. The company was founded by Dennis Wenger in 2000. Dennis has a BS in Biology holds a MS in Ecology. He has been a professional consultant based out of Utah since 1991, and has 30 years of environmental analysis and permitting experience throughout the Intermountain West.

Located in Providence, Utah, Frontier’s offices are approximately 75 miles north of Salt Lake City. Our location is in close proximity to Utah State University, affording us easy access the Merrill-Cazier Library, the Quinney Natural Resources Research Library, the Utah Water Resources Research Laboratory, the Utah Remote Sensing Laboratory, the USU Geographic Information Systems Laboratory, the Intermountain Herbarium, the Federal Documents Repository for the Intermountain Region, and other university facilities.

We maintain a professional staff of multidisciplinary scientists familiar with ongoing research and technological advances at the university. We also maintain an established network of collaborating firms and individuals with expertise in disciplinary fields that complement our capabilities. This arrangement permits us to provide our clients with state-of-the-art support in an efficient and cost-effective manner.


Frontier provides in-house expertise for a wide-range of environmental services. These services are customized on a project-by-project basis to meet specific regulatory and permitting needs. Our services include:

Federal, State, and Local Regulatory Compliance

  • U.S. Army Corps of Engineers Clean Water Act (CWA) Section 404 Permits for work in wetlands, streams, playas, lakes, rivers, springs and other water bodies.
  • Regulatory assessments for determining jurisdictional vs. non-jurisdictional wetlands, ditches, ponds, playas, canals and stream channels.
  • State permitting for stream channel modifications for flood control, bank stabilization, diversions and outfalls.
  • Permitting for wetland and stream habitat restoration.
  • Permitting to establish wetlands mitigation banks.
  • Endangered species and migratory bird assessments for Section 404 permits.
  • Coordination of Cultural Resources surveys for Section 404 permits.
  • State Water Quality Certifications for Section 404 permits.
  • Erosion and Sediment Control Plans for Section 404 permits.
  • Assistance with County and Municipal zoning and planning ordinances pertaining to wetlands, stream and other sensitive land features.
  • Environmental documentation for baseline resource and impact assessments needed for compliance with the National Environmental Policy Act (NEPA)


Learn more about the projects Frontier Corp has completed in these areas:

  • Resource Management
  • Commercial Industrial Development
  • Resort Development
  • Transportation
  • Energy Development
  • Mining
  • Public Utilities & Infrastructure
  • Water Resources Development