Examples of Our Ecological Compliance Expertise
Mitigating the loss of sensitive species and habitats
Before impacting any biological resource during a construction, remediation, or demolition project, it necessary to understand the implications of the planned actions. Plant and animal species present must be evaluated to determine if they are listed on state or federal sensitive species lists. If so, alternatives must be developed to mitigate the impacts. This process is required as part of the implementation of the National Environmental Policy Act (NEPA). EAS biologists routinely evaluate potential impacts and work with project staff to prevent the loss of sensitive species and habitats by developing mitigation strategies.
Preserving roosting habitats and bat colonies
Communal roosts and breeding areas of bats, such as those found in retired Hanford reactor facilities, require mitigation activities be carried out to prevent loss of habitat from demolition activities. Proper mitigation planning involves determining the species at each site, size of the colony, and specific roosting needs. Data collection protocols include mist net capture to obtain morphological measurements, acoustic monitoring of echolocation calls, and genetic analysis to determine species present. These data are then used to develop the mitigation plans to preserve the roosting habitats and the bat colonies that use them.
Protecting Migratory Birds
Nesting migratory birds inhabiting facilities or areas that may be disturbed through construction, demolition, or other operational activities must be identified and mitigation actions taken in accordance with the Migratory Bird Treaty Act of 1918. Nests identified during surveys by EAS biologists are addressed by working with operations staff to avoid disturbing the nests during egg laying or incubation. Other mitigation measures may include relocating the nest, as authorized using state or federal permits, or establishing barriers between bird nesting areas and project operations. We use several methods to survey/characterize birds, their relative abundance, nesting activities, etc., including state database reviews, point count surveys (visual and audio), and mist netting.
Assessing Columbia River Species and Habitats
Understanding critical habitat requirements is key to determining if the basic needs of fish and other organisms are being met. On the Columbia River, near the Hanford Site, for example, data are gathered (using specially developed or tailored field tools and sampling techniques) on substrate type, water velocity and depth, river flow, and other water quality parameters, as well as areas where groundwater seeps into the riverbed.
