ATSI provides a variety of environmental science, land use, and mitigation related services. We take pride in our broad range of knowledge and abilities, which allows a nuanced approach to each project we take on.

Environmental Science

  • The delineation, mapping, and rating of wetlands.
  • The determination and mapping of Ordinary High Water Marks (OHWMs).
  • Risk assessment, including wildlife and habitat assessment and studies.

Land Use

  • The determination of a site’s feasibility for development, mitigation, or restoration.
  • Determining and facilitating any necessary permits.
  • Managing the planning, procurement, execution and completion of a project.
  • Stormwater Pollution Prevention Plan (SWPPP) and monitoring (CESCL) for a project.


  • Planning & mapping of on or off site mitigation.
  • Installation, including excavation, mulching, planting, invasive species management, and fence & sign installation.
  • As built and biannual site visits to monitor and report the site conditions.
  • Maintenance of the mitigation site, including weeding, trimming, mulching, and/or replanting.