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  • Patrick Kobernus, Lead Biologist / Principal

    Patrick Kobernus is the owner of Coast Ridge Ecology, and has over 20 years of experience as a professional wildlife biologist. He manages a staff of six biologists and environmental specialists. As project manager and lead biologist, Mr. Kobernus is experienced with conducting and managing biological assessments, special status species surveys and biological monitoring for large and small scale construction and restoration projects. Mr. Kobernus is well versed in regulatory agency permitting required for compliance with CEQA, NEPA, California Fish and Wildlife Code, Migratory Bird Treaty Act, Clean Water Act, and other applicable laws and regulations. Mr. Kobernus has worked extensively with many special status wildlife species, including the California red-legged frog, San Francisco garter snake, San Francisco dusky-footed woodrat, mission blue butterfly, Central California Coast steelhead, nesting birds, and roosting bats, as well as many rare plant species. Mr. Kobernus holds a USFWS 10(a)(1)(A) Recovery Permit for the San Francisco garter snake, California tiger salamander, and California red-legged frog.

  • Suk–Ann Yee, Associate Biologist III

    Suk-Ann Yee is an experienced biologist with a range of field experience in a variety of ecosystems in California. Ms. Yee is a practiced avian biologist who has extensive experience surveying for bird nests and has monitored the nests of over thirty different terrestrial bird species as part of the SFPUC- WSIP projects. She has worked as an avian biologist for such organizations as the Point Reyes Bird Observatory and U.S. Fish and Wildlife Service. As a Specialty Environmental Monitor for the SFPUC WSIP, Ms. Yee performed pre-construction surveys for special status species including San Francisco dusky-footed woodrat, San Francisco garter snake, California red-legged frog, mission blue butterfly, roosting bats, and a variety of rare plant species. As an Associate Biologist with ESA, Ms. Yee prepared biological assessments and facilitated permit applications and composed CEQA/NEPA regulatory documents for various private and public sector clients.

  • Ranit Cohen, Associate Biologist II

    Ranit Cohen is a field biologist in the San Francisco Bay Area, specializing in insect ecology. Holding a Master’s degree in Entomology, Ms. Cohen has participated in special status butterfly projects in the Bay Area including population surveys for federally endangered mission blue butterfly and Callippe silverspot butterfly, larval counts for the federally endangered San Bruno elfin butterfly, and habitat restoration for the federally threatened bay checkerspot butterfly. As a Specialty Environmental Monitor for the SFPUC-WISP projects, Ms. Cohen has conducted surveys for special status species including the California red-legged frog, San Francisco garter snake, and San Francisco dusky-footed woodrat. She is also familiar with CEQA/NEPA regulatory documents and other applicable laws and regulations pertaining to SFPUC projects.

  • Gregory Pfau, Associate Biologist II

    Gregory Pfau is a field biologist with advanced knowledge of the flora and fauna of the San Francisco Bay Area, particularly vertebrate species. As a field researcher, Mr. Pfau has worked closely with giant kangaroo rats and alpine chipmunks and was recently part of a large project investigating the effects of human trail usage on medium-large mammals using motion sensitive cameras placed throughout northern Bay Area. As a Specialty Environmental Monitor on the SFPUC-WSIP projects, Mr. Pfau has performed surveys and monitored for special-status species including the California red-legged frog, San Francisco dusky-footed woodrat, and San Francisco garter snake. Mr. Pfau is familiar with CEQA, NEPA, State and Federal Endangered Species Acts, as well as other environmental regulations associated with the SFPUC projects.