DVGBC Staff

Alex Dews - LEED AP


Executive Director

Alex Dews has spent the past ten years working on green building and urban sustainability in Philadelphia. Alex worked in real estate development prior to leading program implementation and progress reporting for Greenworks Philadelphia, the city's comprehensive sustainability plan. Alex is a LEED AP and received a BA in English from the University of Vermont and an MS in Sustainable Design from Philadelphia University, where he is an Adjunct Professor in the School of Architecture.

Phone: 215.399.5791
Email: adews@dvgbc.org 

Megan Slootmaker


Director of Operations

Megan earned a B.S. in Chemical Engineering and minor in Environmental Science from Lafayette College. She worked for over 10 years as an I.T. project management consultant in London and Philadelphia with Accenture. After volunteering for several local organizations, she changed her career focus to the nonprofit sector. She has been working at DVGBC since the summer of 2010.

Megan works part time Monday through Thursday. Contact her with questions related to billing/payments, website issues or suggestions, or general organizational information. 

Phone: 215.399.5794
Email: mslootmaker@dvgbc.org
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Margaret Salamon


Development Director

Margaret brings over 15 years of experience in the nonprofit sector to DVGBC. Most recently she worked for the United Way of Greater Philadelphia and Southern New Jersey and prior to that the Center for Nonprofit Excellence in Albuquerque, New Mexico. Additionally, in her twenties, her partner and her hand-built a house made out of recycled materials that included passive and active solar, rainwater catchment, and grey and blackwater wetland systems. Margaret has a strong interest in the built environment, for advancing ecological solutions, and for issues around social equity and is excited to work to advance DVGBC’s mission.

Contact Margaret with questions regarding sustaining partnership. 

Phone: 215.399.5799
Email: msalamon@dvgbc.org

Katie Bartolotta


Policy and Program Manager

Katie Bartolotta brings broad policy, organizing, coalition-building, and campaign experience to her work with DVGBC. Previously, she was southeastern Pennsylvania outreach coordinator with PennFuture, senior organizer with the American Federation of Teachers, and executive director of the Erie County Democratic Committee in New York State. She holds a bachelor's degree in political science from the University of Rochester.

Contact Katie with questions related to policy and advocacy. 

Phone: 215.399.5789
Email: kbartolotta@dvgbc.org

Leah Wirgau - LEED Green Associate


Education and Engagement Manager

Leah has worked several years in outreach at state, federal, and non-profit organizations. She is also a part-time instructor of urban sociology at Kalamazoo Valley Community College. Ever since earning her Master of City and Regional Planning and Master of Environment and Natural Resources degrees from Ohio State University, she has been eager to apply her skills to the green building and sustainability sector. She is also a LEED Green Associate. 

Contact Leah with questions regarding events, membership, or communications. 

Phone: 215.399.5798
Email: lwirgau@dvgbc.org