Meet Our Staff

COVID-19 Update

We’re proactively working to keep our staff, volunteers, and community partners safe and healthy. As part of our efforts:

  • Our main office is closed until further notice.
  • Herrring Run Nursery is open by appointment only — click HERE for details.
  • Our staff are working remotely and practicing social distancing.
  • Staff may not be regularly checking their voicemails during our office closure. Please contact our staff via email in the meantime. We will do our best to respond in a timely manner.

For updates, check our website regularly and follow us on social media


Director Staff

Jenn Aiosa, Executive Director

Jenn Aiosa is a long-time member of Maryland’s environmental community and a 20-year veteran of environmental nonprofits and state government. Jenn has served in her current role since June 2017 and first joined Blue Water Baltimore as a former Board Member.

Prior to joining Blue Water Baltimore, Jenn served as Vice President and Director of Conservation Programs at the Chesapeake Conservancy and Director of Policy and Planning Research for the Maryland Department of Planning. In her free time, Jenn enjoys volunteering at Patterson Park, cycling, and gardening.

Jill Cecil, Director of Finance and Administration

Jill supports and oversees management of finances and budgeting, human resources, and operations. With more than 20 years of experience, Jill has a solid background in both for- and non-profit finances.

Francine Housier, Director of Human Resources and Chief of Staff

Francine directs and monitors overall HR strategies, systems, and procedures. She also advises leadership about prioritizing and advancing efforts toward Blue Water Baltimore’s goals under our five-year strategic plan and leads the collaborative work to develop and maintain measurements of strategic plan successes, challenges, and accountability.

Francine 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 resources needs and issues.

Leanna Powell, Director of Development

Leanna directs the fundraising team and loves introducing people to the superheroes of Blue Water Baltimore. Leanna grew up along the waterways of southern Maryland but has spent more than a decade in Baltimore wears her Inner Harbor skyline tattoo with pride. She enjoys running and biking along City waterways, and teaches wood carving in her spare time.

Alice Volpitta, Baltimore Harbor Waterkeeper

As our Baltimore Harbor Waterkeeper, Alice directs our water quality monitoring programs and spearheads our enforcement efforts. She also oversees the management of our pollution reporting hotline, regulatory & permit review, and policy evaluation work.


Blue Water Baltimore Staff

Michel Anderson, Senior Manager of Ecoliteracy and Engagement

Michel develops and facilitates our education and ecoliteracy programs to help Baltimore residents, students, and communities understand how we are all connected to our streets and streams.

Prior to joining Blue Water Baltimore, Michel managed a variety of sustainability initiatives and education programs as the Waldorf School of Baltimore’s Ecoliteracy and Sustainability Coordinator.

Darin Crew, Senior Manager of Operations

Darin oversees the operations of our multifaceted projects and staff. A long-time member of Blue Water Baltimore, Darin worked at one of Blue Water Baltimore’s legacy organizations (Herring Run Watershed Association).

Darin is a former Chesapeake Bay Program Fellow and Maryland Department of Natural Resources.

Zoe Gensheimer, Community Forestry Coordinator

Zoe leads community tree plantings and maintenance. She organizes our free tree giveaway program and assists with ecoliteracy and educational activities.

She grew up in Baltimore City and plans to stay here for a long time, working with friends, family, and local communities to return it to a forest.

Jessie Hillman, Senior Manager of Stormwater Program

Jessie works with community groups, congregations and other property owners to collaboratively plan and construct green stormwater infrastructure projects to improve the health of Baltimore’s waterways. She also represents Blue Water Baltimore in a cross-sector collaborative called the Baltimore Environmental Equity Partnership.

She joined the Blue Water Baltimore team in 2015 with extensive experience in community outreach and non-profit administration. In her free time she volunteers at the Station North Tool Library and works on her liveaboard sailboat in the Inner Harbor.

Sarah Holter, Senior Development Coordinator/ Waterkeeper Project Assistant

Sarah assists the Director of Development 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.

Reagan Hooton, Restoration Project Manager

As our Restoration Project Manager, Reagan manages the implementation of our environmental restoration projects and helps identify future restoration projects that improve the health of our watersheds. She has a background in native plant landscaping and volunteers in her free time with Baltimore Free Farm. 

Rob Jenkins, Nursery Manager

With more than 23 years of experience in Maryland’s horticulture industry, Rob oversees the daily operations of our Herring Run Nursery. He primarily oversees the production and retail aspects of the nursery.

While working on his master’s degree, Rob interned with Blue Water Baltimore’s water quality monitoring program and the Maryland Department of the Environment. He soon joined us full-time as our Nursery Manager.

Barbara Johnson, Water Quality Scientist

As our water quality scientist, Barbara manages the ambient water quality monitoring program under the direction of 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.

  • Phone: 410.254.1577 ext. 115

Mary Lewis, Nursery Assistant Manager

With more than eight years of experience, Mary is responsible for the development of nursery outreach and interactive programs at our Herring Run Nursery.

John Marra, Ecoliteracy and Restoration Specialist

John manages our storm drain art program and leads many of our ecoliteracy programs and green infrastructure projects.

As an Eagle Scout since 1999, Americorps member, and a founding member of the Baltimore Rock Opera Society, John Marra strongly believes in the importance of volunteerism, community involvement and do-it-yourself ethics.

Jeff Missouri, Administrative and Facilities Coordinator

Jeff provides administrative and facilities support at Blue Water Baltimore. Jeff manages building maintenance, information technology, mail services, and customer service.

Jeff has many years of experience in real estate management, contract management, event planning, and logistics in campus and hospital settings. In his free time, Jeffrey is a mentor who supports young teens in Baltimore through Project Raise.

Corbin Sulton, Implementation Senior Coordinator

Corbin implements our landscape and stormwater restoration projects. He also supervises and mentors our field crew in their daily work. Corbin is a certified professional in erosion and sediment control and is proficient in using heavy machinery and a variety of hand tools.

Robert Walker, Implementation Coordinator

Robert ensures thorough implementation, completion, and accuracy of inspection reports for our restoration projects. 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 and is an Army veteran.

Peter Weitzmann, Database Specialist

Peter is determined to use data and technology to promote solutions to environmental and social issues in Baltimore. Peter works to support our programmatic and development goals by overseeing the collection, organization, and utilization of data.

In his free time, Peter plays guitar with his band.