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Wetland, Stream & Stormwater

Eocene Environmental Group Has a Dedicated Team of Highly Trained Biologists Qualified to Perform Wetland Delineations & Assessments.

An Eocene employee kneels as he works on the banks of a body of water with mountains in the background.

Wetlands, streams and stormwater assessments are regulated by various local, state and federal laws. These assessments can help identify risks associated with a project or site.

Our biologists routinely work in and around jurisdictional waters, wetlands and riparian habitats, and we are well acquainted with state and federal permitting requirements regarding these resources.

Stream Alteration Permitting & Clean Water Act

We have assisted clients in the preparation, coordination, submittal and successful procurement of over 60 California Department of Fish and Wildlife Lake and Streambed Alteration Agreements. We have also worked on dozens of Section 404 permits from the U.S. Army Corps of Engineers (USACE) and Section 401 Water Quality Certifications from the State and Regional Water Quality Control Boards.

When preparing these packages, our staff conducts all the fieldwork (e.g., jurisdictional delineations, biological studies, cultural studies, etc.) and provides the supporting documents to compile the final permit package. We have a strong track record of submitting packages that are accepted without requests for additional information.

Wetland Delineation

To complete a project on property considered a wetland, a wetland delineation must be performed to acquire the necessary permits. If a project is performed without permits, this violates Section 404 requirements.

To perform a wetland delineation, our biologists identify and map the boundaries of wetlands and their associated waters. Our team of experts will:

  • Conduct a field investigation to collect data by checking for soil and vegetation types.
  • Analyze the field data after it is collected.
  • Generate a wetland delineation report for regulatory compliance.
  • Prepare necessary permit deliverables.

Our team has performed a variety of wetland delineations, including numerous projects for Dominion Energy. The methods used to identify potentially jurisdictional Waters of the U.S. and any other potential aquatic features (including wetlands) within the project area were based upon:

  • The USACE Jurisdictional Determination Form Instructional Guidebook.
  • A Field Guide to the Identification of the Ordinary High Water Mark in the Arid West Region of the Western United States.
  • The USACE Wetland Delineation Manual.
  • The Regional Supplement to the USACE Wetland Delineation Manual: Arid West Region.

  • Recent historic and aerial photography.
  • The USFWS National Wetlands Inventory (NWI) mapper.
  • U.S. Geology Survey (USGS) National Hydrography Datasets.
  • National Resources Conservation (NRCS) soil maps.
  • Flood control public works maps.

Stormwater Pollution Prevention Planning (SWPPP)

A vital component to any construction plan is planning for the protection of the water quality through stormwater pollution prevention planning. When improperly handled, stormwater runoff can contaminate rivers, lakes and coastal waters.

Our team can prepare the plans, perform inspections for the plans, and identify best management practices to prevent contaminated water from getting into a stream, wetland or storm drain. At prescribed intervals or anytime there is a storm, our team goes out to the project site to perform an inspection and make sure everything is installed properly to prevent water quality issues.

Have Questions? Contact Eocene Environmental Group

Hiring Eocene for wetland, stream and stormwater assessments ensures compliance with regulations, manages risks, promotes good environmental practices and improves stakeholder communication.

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