Meet Our Natural Resources Team

Megan Meder

Megan Meder

Director of Natural Resources

Megan was first exposed to CCNB and its mission in 2012 when she worked alongside a crew as a Natural Resources Program Assistant for the Sonoma County Water Agency in their Stream Maintenance Program. She worked as a Consulting Utility Forester for PG&E for the next several years where she cemented her tree knowledge and also became an ISA Certified Arborist.

Megan joined CCNB in 2017 as an Assistant Supervisor wanting to expand her leadership skills and inspire others to become passionate environmental stewards. Her dedication to the corpsmembers was undeniable and she was soon promoted to Supervisor. She continued to grow as a leader in the roles of Sonoma Natural Resources Coordinator, Senior Coordinator, and Sonoma Natural Resources Manager before being promoted to Director of Natural Resources in June 2022.

Mariah Chastain

Greg Sitter

Sonoma Natural Resources Manager

Greg joined CCNB in February of 2020 with a diverse set of professional experiences. He worked as an Green Building Engineer in his native France before becoming a Volunteer Corps Member at an international non-profit called ATD Fourth World. During his 6 years tenure at ATD Fourth World, Greg collaborated with governmental figures in France to craft legislature to improve the lives of those living in persistent poverty. When the chance arose to continue working with ATD Fourth World in the United States, Greg moved to New Orleans where he ran street library programs making books and artistic activities accessible to children and families living in under-resourced neighborhoods.

Since moving to Sonoma County in 2017, Greg’s career has shifted towards natural resources management; Greg has designed, installed, and maintained school gardens and worked as an arborist, tree climber and foreman for local tree services.

In 2020 – 2021, Greg was the Sonoma Natural Resources Coordinator and then the Senior Natural Resources Coordinator for the NRC Department. In January of 2022, Greg decided to part ways with CCNB and worked as a Vegetation Program Manager for Pacific Gas and Electric in Sonoma County. Greg couldn’t stay away for too long and he returned to the CCNB team in September of 2022 as the Sonoma Natural Resources Manager.

In his spare time, Greg enjoys spending time with his family, gardening, beekeeping, tending to his flock of chickens, and competing in epee fencing.

Mariah Chastain

Casey Melligan

Sonoma Natural Resources Coordinator

Casey joined the Natural Resources team in Fall 2022 as the Natural Resources Coordinator. Casey previously worked for the Sonoma County Department of Health Services as a Logistics Specialist and Vaccine Transporter from 2020 to 2022. Casey has spent the majority of his professional career managing and facilitating operational logistics, and supply chain management.

Casey graduated from Cal Poly Humboldt in 2015 with a Bachelor of Arts in Environmental Studies, specializing in Natural Resource Management and Protection, and Environmental Policy. His senior thesis explored the intersectionality of natural disasters and disenfranchised populations, utilizing a case study on the lasting impacts which persisted following Hurricane Katrina. Most recently, Casey completed his post baccalaureate studies online from Vermont Law School, graduating with a Masters in Environmental Law and Policy. Casey specializes in Water Resource Management, Conservation Biology, and Climate Change Adaptation.

Mariah Chastain

Joshua Mosebach 

Marin Natural Resources Coordinator

Joshua joined CCNB in the fall of 2023. He holds a B.S. in Biology from CSU Monterey Bay, and a M.S. in Forestry from Technical University of Dresden. He has worked at Pinnacles National Park doing habitat restoration, as well as Northwest Youth Corps in Washington state leading and organizing crews doing trails and invasive species removal. 

Tyler Pitts

Yamila Blake-Lazu, Marin Natural Resources Supervisor

Tyler Pitts

Eliseo Garcia, Marin Natural Resources Lead Supervisor

Tyler Pitts

Athirah Mohamad, Sonoma Natural Resources Crew Supervisor

Tyler Pitts

Christian Springe, Marin Natural Resources Supervisor

Tyler Pitts

Matt Fowler, Sonoma Natural Resources Crew Supervisor

Tyler Pitts

Manny Lopez, Sonoma Natural Resources Assistant Supervisor

Tyler Pitts

Josh Montgomery, Sonoma Natural Resources Lead Supervisor

Tyler Pitts

Sidney Toussant, Sonoma Natural Resources Supervisor

Tyler Pitts

Oscar Galvez, Sonoma Natural Resources Assistant Supervisor

Tyler Pitts

Thelma Mira, Marin Natural Resources Assistant Supervisor

Tyler Pitts

Bianca Nurnberger, Marin Natural Resources Assistant Supervisor 

A star () next to a staff title denotes that this staff member is a former corpsmember. We are proud to have so many former program participants among our staff!

Conservation Corps North Bay is the oldest local nonprofit youth conservation corps in the country. Serving Marin and Sonoma Counties since 1982, CCNB has helped thousands of young people achieve their goals through education and job skills, while serving the environment and community.