ERO provides creative and successful solutions to biological resource issues faced by our public and private sector clients. As part of our client-focused approach to environmental compliance processes, we perform resource inventories and impact assessments, negotiate with regulators, develop mitigation plans, and monitor post-project conditions. Our knowledge of natural resource systems and their associated regulatory processes results in science-based and defensible solutions that we deliver objectively and with integrity.
1Environmental permitting and clearances

ERO specializes in Clean Water Act Section 404 permits and violations, Endangered Species Act compliance, and strategic compliance with the Migratory Bird Treaty Act and Bald and Golden Eagle Protection Act. We also assist clients with:

  • Avian and bat protection plans
  • Oil and gas regulatory compliance
  • Federal wind energy guidelines
  • Electrical transmission facilities regulatory compliance
  • State, county and local government/special district regulatory compliance (Fish and Wildlife mitigation plans, 1041 regulations, and local land use planning requirements)
2Wetland delineation and mitigation
ERO is a regional expert in delineating wetlands and fens.  Our wetland specialists have designed and monitored construction of hundreds of acres of wetland mitigation projects.
3Endangered Species Act compliance

ERO has expertise in preparing, implementing, and monitoring Endangered Species Act (ESA) permits.  This expertise includes all aspects of preparing ESA permits:

  • Agency consultation
  • Biological assessments
  • Habitat conservation plans
  • Candidate conservation agreements
  • Safe harbor agreements
4Biological resource studies
ERO has experience in the western U.S. with mapping, categorizing, assessing, and managing communities and habitats in a wide range of ecosystems – from desert canyonlands to high-altitude fens. We use the latest remote sensing and analysis technology including GIS, LIDAR, side-angle radar, and web-based real-time data analysis to prepare wetland functional assessments, riparian proper functioning conditions reports, habitat equivalency analysis, and rapid resource assessments and to develop project-specific models.
5Restoration, revegetation, and weed management

ERO uses our understanding of ecological principles such as succession and plant/animal interactions to design restoration, mitigation, revegetation, and weed management plans for native plant communities.  Our extensive experience with installation and monitoring ensures that our plans and specifications are clear and constructible.

6Wildlife studies
ERO’s wildlife specialists perform surveys, assess habitats, develop management plans, and implement habitat mitigation/restoration plans for large and small mammals, birds, raptors, reptiles, and amphibians.  We have particular expertise in migratory bird nesting studies, ungulate management, sage grouse, prairie dogs (all species), boreal toad, and raptors.
7Threatened, endangered, and sensitive species studies

ERO scientists are trained and certified to conduct surveys for a broad range of federal- and state-listed threatened and endangered species, Forest Service and BLM sensitive species, and management indicator species through the western U.S.  Our experience includes surveys for:

  • Preble’s meadow jumping mouse
  • Greater and Gunnison sage grouse
  • Southwestern willow flycatcher
  • Black-tailed prairie dog
  • Black-footed ferret
  • Colorado hookless cactus
  • Ute ladies’-tresses orchid
  • Western yellow-billed cuckoo 
  • Mexican spotted owl
  • Moonworts