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Coast Ridge Ecology (CRE) is an ecological consulting firm with extensive experience in providing endangered species surveys, construction monitoring, wildlife and botanical surveys, restoration planning, permitting assistance, wetland delineations, research and education services for a variety of public and private sector clients. CRE works closely with clients and agencies to assist clients through the environmental permitting process.


  • Protocol Surveys for Rare and Endangered Plant and Animal Species

  • Dipnet and Seine Surveys for Fish and Amphibians

  • Dewatering and Fish Relocations 

  • Pre-Construction Surveys

  • Nesting Bird Surveys

  • Bat Roost Surveys: Visual and Acoustic

  • Wetland Delineations


  • Compliance Monitoring

  • Environmental Training and Construction Monitoring

  • Mitigation, Monitoring, and Reporting Programs


  •  Invasive Species Mapping and Management Plans

  •  Habitat Management and Reporting

  •  Biological Assessments


  • U.S. Fish and Wildlife Service (USFWS) Section 7 and Section 10 (Habitat Conservation Plan) Consultations

  • Initial Study Checklists and EIS/EIR Biological Resources Sections

  • California Department of Fish and Wildlife 1600 Streambed Alteration Agreements

  • U.S. Army Corps of Engineers and Regional Water Quality Control Board, CWA Section 404 and 401 Permitting Consultations, California Coastal Act Permitting Consultations

  • Joint Aquatic Resources Permit Applications (JARPA)

  • National Environmental Protection Act (NEPA) and Natural Environment Studies (NES)

  • California Environmental Quality Act (CEQA) Compliance Analysis and Permitting


USFWS 10(a)(1)(A) Recovery Permits for

  • California red-legged frog

  • California tiger salamander

  • San Francisco garter snake

​Coast Ridge Ecology is a certified Local Business Enterprise (LBE) by the City and County of San Francisco, and a certified Small Business Enterprise (SBE) by the State Department of General Services.

CRE is owned by Principal Biologist Patrick Kobernus, who has 28 years of experience as a biological consultant in California. CRE staff includes environmental professionals with a range of expertise on endangered species and environmental compliance.

CRE clients consist of private individuals and corporations and public agencies such as the San Francisco Public Utilities Commission, Pacific Gas and Electric, San Mateo County Parks Department, Port of San Francisco, and the U.S. Fish and Wildlife Service.

Rodent burrow excavation
Bat condo
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