The Marin Environmental Stewardship pilot project demonstrates the potential for a partnership model that brings together external and internal collaborators to recruit and train episodic 4-H volunteers to meet environmental education needs within a community. The clientele served by the volunteers trained through the project was at-risk, urban youth. In this model, the University of California Cooperative Extension provided project design and leadership, youth development professionals, and natural resources expertise. The community partner provided volunteers, training facility, transportation for field trips, community sites for service, and support material for program delivery. The resulting framework provided a strategy for other professionals.