Photo credit: Brian Babcock


Blue Water Baltimore is proud to have a staff committed to building community programs that promote clean, healthy waterways. Our dedicated staff is responsible for our essential day-to-day operations and the implementation of our programs.

Director Staff

Jenn Aiosa, Executive Director

Jenn Aiosa is a long-time member of Maryland’s environmental community, having worked on science and policy issues for several organizations. Jenn previously worked as the Director of Conservation Programs at Chesapeake Conservancy, and for the Maryland Department of Planning (MDP) as the Director of Policy and Planning Research. Prior to her work at MDP, Jenn worked for the Environmental Defense Fund and for 12 years as the Senior Scientist in the Maryland Office of the Chesapeake Bay Foundation. She has also worked for the University of Maryland Cooperative Extension Service on a multi-state water quality program, and for the Maryland Department of Natural Resources on Maryland’s Coastal Bays National Estuary Program. She received her Bachelor of Science in Marine Sciences, with honors with the Honors College at the University of South Carolina and an Master of Science in Environmental Sciences from the University of Virginia. She enjoys volunteering in Patterson Park, cycling, and gardening.

Jill Cecil, Director of Finance & Administration

Jill Cecil has a solid background in finance with more than 20 years of experience managing both profit and non-profit finances. In her role at Blue Water Baltimore, Jill supports the areas of finance, budget, human resources and operations. She earned an Associate of Arts in education from Notre Dame College and an Associate of Arts in accounting from the Community College of Baltimore County.

Angela Haren, Director of Advocacy and the Baltimore Harbor Waterkeeper

Angela Haren leads the Baltimore Harbor Waterkeeper program, which includes advocacy, enforcement, and water quality monitoring to protect and restore Baltimore’s waterways. As an environmental and natural resource attorney, Angela has extensive experience in both marine and fresh water resource management. Prior to joining Blue Water Baltimore, she co-founded Clear Resource Law, a firm specializing in legal and policy services for environmental projects. She brings over fourteen years of non-profit experience including serving as a contract attorney for the Natural Resources Defense Council and Program Director for California Coastkeeper Alliance. Angela holds a J.D. in Environmental Law from Golden Gate University, an M.P.P. in Environmental and Natural Resource Policy from the University of California Los Angeles Luskin School of Public Affairs, and a Bachelor of Arts in Comparative Literature from the University of California Davis.

Program Staff

Michel Anderson, Ecoliteracy & Engagement Manager

As the Ecoliteracy & Engagement Manager, Michel Anderson facilitates experiential education activities to help Baltimore residents, institutional staff, and students understand the connection between our streets and streams. He develops and manages our Ecoliteracy Programs. Before joining Blue Water Baltimore, Michel worked as the Ecoliteracy & Sustainability Coordinator for the Waldorf School of Baltimore where he developed original nature-based educational programming and managed a variety of sustainability initiatives. Michel is an artist, photographer, author, and permaculture practitioner. He has a Bachelor of Arts degree in Visual Art and Photography from the University of Maryland Baltimore County and a Master of Education degree in Sustainability and Nature-based Education from Antioch University New England.

Oswaldo Campitelli, Senior Construction Operations Manager

Oswaldo Campitelli (Oz) is the Senior Construction Operations Manager with Blue Water Baltimore and brings years of experience working with construction and warehouse management. In his role at Blue Water Baltimore, Oz coordinates field operations, manages the fleet, coordinates work with other contractors, and implements and oversees new construction projects. He earned a Bachelor of Science in Construction Management from Morgan State University.

Darin Crew, Senior Manager for Nursery & Forestry

Darin Crew leads our Nursery, Youthworks Program, and Urban Forestry planting and maintenance programs.  Before joining Blue Water Baltimore, Darin worked at Herring Run Watershed Association (legacy organization), after serving as a fellow for the Chesapeake Bay Program and pulling seine nets for the Maryland Department of Natural Resources. He earned a Bachelor of Science in Biology from University of North Carolina at Wilmington and is a certified professional horticulturist through Maryland Nursery and Landscape Association.

Zoe Gensheimer, Community Forestry Coordinator

Zoe assists in leading tree plantings and maintenance in Baltimore’s green spaces; additionally, she organizes the Tree Giveaway Program. Zoe graduated from UMBC with a Bachelor of Arts in Visual Art and Photography. She grew up in Baltimore City and plans to stay here for a long time, working with friends and family to return it to a forest ecosystem.

Jessie Hillman, Stormwater Program Manager

Jessie Hillman manages stormwater projects in collaboration with a range of community groups and congregations. She also administers a cross-sector collaborative of non-profits pursuing transformative, community-driven improvements to Baltimore City’s environmental health. She joined the Blue Water Baltimore team in 2015 with extensive experience in community outreach, non-profit administration, and a Bachelor of Arts degree in Cultural Anthropology from Reed College.  Outside of work, Jessie attends Morgan State University and is working towards a master’s degree in city and regional planning, volunteers as a librarian with the Station North Tool Library, and works on her liveaboard sailboat in the Inner Harbor.

Sarah Holter, Development & Engagement Coordinator / Waterkeeper Project Assistant

Sarah Holter serves as the Development and Engagement Coordinator at Blue Water Baltimore. She assists the Development and Project Manager and Executive Director with fundraising, event planning, and office administration. Sarah also assists the Waterkeeper team in the field as a Project Assistant, collecting and transporting water quality samples. Before joining the Blue Water team she worked in urban agriculture at Real Food Farm and home improvement at Cities For All Ages, both programs of Civic Works. Sarah earned a Bachelor of Arts in Economics from St. Mary’s College of Maryland, with a focus on Environmental Economics.

Francine Housier, HR Manager

Francine Housier manages Blue Water Baltimore’s human resource functions, including HR compliance, recruitment and onboarding, employee relations, staff development, payroll, and benefits. She previously worked in human resources and operations at The Nature Conservancy’s global headquarters in Arlington, Virginia. After arriving in Baltimore in 2009, she began consulting with area non-profit organizations about their human resource needs and issues. She earned a bachelor’s degree in psychology from James Madison University in Harrisonburg, Virginia.

Rob Jenkins, Nursery Manager

As the Nursery Manager, Rob Jenkins oversees the daily operations of Herring Run Nursery. He has more than 23 years of experience within the Maryland horticulture industry, primarily in the production and retail aspects of the business. Rob received both his Bachelor of Science in Biology, as well as his Master of Environmental Science from Towson University. While working on his master’s degree, Rob interned with Blue Water Baltimore’s water quality monitoring program, as well as interning with the Maryland Department of the Environment.

Barbara Johnson, Water Quality Scientist

As Water Quality Scientist, Barbara Johnson provides support for the ambient water quality monitoring program under the Baltimore Harbor Waterkeeper. Barbara also runs our Outfall Screening Blitz program and our Pollution Reporting 101 trainings and conducts pollution investigations when problems are reported by community members. Before joining Blue Water Baltimore, Barbara interned with the water quality monitoring program. She has lived in Baltimore more than 23 years and earned a Bachelor of Arts degree in Environmental Sustainability and Human Ecology from the University of Baltimore.

Jennifer Duffy, Development Manager

Jennifer Duffy serves as the Development Manager at Blue Water Baltimore. She assists the Development  Manager and Executive Director with furthering the mission of Blue Water Baltimore by providing fundraising, office administration and special projects support including being responsible for administrative operations of development, and database management. She previously worked for five years in the Landscape Architecture and Planning Department for a civil engineering firm in Greenbelt and operated her own landscaping company for six years in Baltimore City. Jennifer earned a Bachelor of Arts in Landscape Architecture from University of Maryland, College Park and a Bachelor of Arts in English from Wake Forest University.

Mary Lewis, Herring Run Nursery Coordinator

As the Nursery Coordinator, Mary Lewis is responsible for the development of nursery outreach through social media and the coordination of interactive programs. She assists with daily nursery operations at Herring Run Nursery, bringing with her over 8 years of experience in the field. She earned a Bachelor of Arts in Environmental Studies with a minor in Sociology from Salisbury University and is a certified professional horticulturist through Maryland Nursery Landscape and Greenhouse Association.

John Marra, Ecoliteracy & Restoration Specialist

John Marra specializes in installing and maintaining our green infrastructure projects throughout Baltimore City and County; he also manages our Storm Drain Art Program and leads various Ecoliteracy Workshops.  Prior to joining Blue Water Baltimore John was a teacher for Art With a Heart, a public mural artist, an Americorps member with Civic Works, and the assistant supervisor for the Civic Works Community Lot Team. An Eagle Scout since 1999 and a founding member of the Baltimore Rock Opera Society, John strongly believes in the importance of volunteerism, community involvement and do-it-yourself ethics. He earned a Bachelor of Arts from Goucher College.

Jeff Missouri, Administrative & Facilities Coordinator

As the Administrative & Facilities Coordinator, Jeff provides support for administrative, reception and customer service, as well as facilities management. Jeffrey has ten years experience in real estate management, five years in contract management/event planning in a campus environment, and 15 years as Director of Parking and Transportation in a hospital environment. He played an instrumental part in developing and implementing the very first transportation department at JHH and coordinated UB campus events for artscape. Jeffrey studied at Morgan State University and at the University of Baltimore. He has received three Manager of the Year awards. In his free time, Jeffrey is a mentor for Project Raise and Project 2000, supporting young teens.

Corbin Sulton, Senior Implementation Coordinator

As Senior Implementation Coordinator, Corbin Sulton is responsible for the implementation of Blue Water Baltimore’s landscape and stormwater restoration projects. He also supervises and mentors the field crew in their daily work. Prior to joining Blue Water Baltimore, Corbin worked with Baltimore County golf courses and with local private landscape companies. Corbin is a certified professional in erosion and sediment control and is proficient with heavy machinery and a variety of hand tools.

Alice Volpitta, Lead Water Quality Scientist

As Lead Water Quality Scientist, Alice Volpitta manages the tidal and non-tidal ambient water quality monitoring program under the Baltimore Harbor Waterkeeper. Alice also manages the illicit discharge detection and elimination project. Previously she worked with the Maryland Department of Natural Resources managing its Non-Tidal Network Program and carrying out monitoring surveys across the state. Alice earned her Bachelor of Arts in Biology with a minor in Environmental Studies from St. Mary’s College of Maryland.

Robert Walker, Implementation Coordinator

As the Implementation Coordinator for Blue Water Baltimore, Robert Walker ensures thorough project implementation, completion and accuracy of inspection reports. He is also responsible for planting street trees and the construction and landscaping of environmental stormwater projects and rain gardens within the Baltimore region. Prior to joining Blue Water Baltimore, Robert worked with the Center for Urban Families.

Peter Weitzmann, Database Specialist

As Database Specialist, Peter Weitzmann oversees the collection, organization, and utilization of data at Blue Water Baltimore. He is determined to use data and technology to promote cultural solutions to environmental and social issues in Baltimore. Using the organization’s Salesforce CRM and other applications, Peter works to support Blue Water Baltimore’s programmatic and development goals, as well as the engagement of our volunteers and donors. Prior to joining Blue Water Baltimore, Peter worked as an admission counselor at the University of Baltimore. He earned a Bachelor of Arts in Anthropology from Hamilton College.