The Team

Staff, Sustainability Coaches, & Board Members

Core Team

Erin Altman

Volunteer Coordinator
Erin is an experienced organizer with a passion for nature and sustainability. Her love for the outdoors began in childhood, spending evenings outside and summers at camp in the White Mountains. She has worked in political organizing, campaign management, and fundraising for the Mid Pines Foundation, which provides camperships for girls.
As Green Beverly's new volunteer coordinator, Erin is eager to engage the local community and connect volunteers with environmental initiatives.
Email: Erin@greenbeverly.org
Dean Berg

Executive Director
Dean became involved in Green Beverly because he wanted to bring his experience in residential sustainability and corporate business to his hometown. While studying various approaches to residential engagement in 2017, Dean found that the most effective approach is to look at residential engagement from a community perspective – integrating the residents with the local business community, school systems, and municipal government. Dean believes that taking a systems-based approach to residential sustainability yields the greatest impact in the shortest period of time.
Email: Dean@greenbeverly.org
Tracy Danner

Community First Partnership Project Manager

Tracy has lived in Beverly for five years with her son, mother, dog and two cats. Tracy brings experience in HR, Marketing, Customer Service and Management. Tracy has a Master’s Degree in Industrial Organizational Psychology as well as a BA in Marketing and Management Information Systems. A strong advocate for the environment and clean living, Tracy is excited to help Beverly residents live a more sustainable lifestyle while staying within their desired budgets. Tracy is also a big supporter of the New England Patriots and Boston Celtics.
Email: Tracy@greenbeverly.org
Christina Frei

Program Coordinator
Christina runs a boutique marketing practice helping solo business owners become authorities in their field through content-rich strategies. Her holistic approach and Marketing Archetype system grew from her own journey starting a business in Boston, which she shared in her 2022 TEDx talk.
Outside of work, Christina cold plunges year-round, chases her dog around with a stuffed snake, meditates, and obsesses over the perfect cup of green tea in her seaside town north of Boston. She's excited to use her marketing, writing, and project management skills to help Beverly get even greener.
Email: Christina@christinafrei.com
Shelley Lee

Programming/Project Director
Shelley earned an architecture degree from Rhode Island School of Design. She joined Turner Construction for five years serving different parts of the business. Subsequently, she spent another five years at Shepley Bulfinch, an architectural firm in Boston, where she coordinated the technical consultants on a hospital project. The real fun started when she stayed home to raise kids. In the end, she homeschooled two boys from K thru 12 and helped run a small homeschool group. Shelley is excited to be working for Green Beverly, using her creativity, project management skills and teaching experience to help push sustainability forward in Beverly where she and her family have lived since 2000.
Email: Shelley@greenbeverly.org
Fatima Lopez

Marketing Communications Director
Fatima is a climate communicator who makes environmental science accessible and actionable for everyday communities. Raised in Everett, MA, she witnessed firsthand how unequal access to information shapes engagement—a reality that drives her mission. As a proud Latina in STEM, she champions representation and meets people where they are, from schools to community centers to digital platforms. With a degree in Communication and Environmental Science from UMass Amherst, she transforms complex climate issues into inclusive stories that spark awareness and protect the most vulnerable. She also enjoys learning new languages, cultures, and eating sweet treats.
Email: Fatima@greenbeverly.org
Brett Otis

Project Manager
A recent North Shore resident, Brett joined Green Beverly as project lead on an urban agriculture initiative to expand food production and increase local food security. As an avid container gardener and farmer's market regular, he enjoys learning from residents advancing community-based food systems in Beverly and beyond.
Brett is a Communications Project Manager at the Harvard T.H. Chan School of Public Health, supporting initiatives at the intersection of human and planetary health. He holds a bachelor's in multimedia journalism with a specialty in health communication and a master's in sustainability focused on food systems and healthy communities.
Email: Brett@greenbeverly.org
Christina Olson-Berg

Project Strategist & Vice-Manager, Sustainable Transportation Event Project Manager
I created Green Beverly's website, branding, and marketing design, and currently consult in small business marketing and web/UX design as co-founder of Path To A Green Home. I grew up in Germany as an "Army Brat" before moving to Minnesota, and later to Beverly with my husband Dean and our 4-year-old—we've called Beverly home for 18 years. My passion for sustainability began 14 years ago while making our 1886 house energy efficient, which taught me that sustainable living requires flexible solutions and that small, everyday actions matter. I'm excited that Green Beverly provides resources and community support to make greener living easier for our town.
Email: Christina@greenbeverly.org
Susan Powers

Project Manager
Susan Powers has been a North Shore resident for three years and works in Pricing Strategy for technology companies. Her love of swimming, biking, and spending time in nature sparked her passion for sustainability.
She's excited to work with Green Beverly to protect these spaces on a larger scale and help local businesses highlight and expand their sustainability efforts. When not working, Susan enjoys walking with her husband and dog, spending time by the beach, and teaching fitness classes.
Nick Schneble

Project Manager
Nick has been a software engineer for over 20 years, and worked with everyone from startups and small businesses to industry giants. He likes to focus on ethical consumption and sustainability. In working with Green Beverly, Nick hopes to leverage all those years of project management and organization experience, connect more deeply with the community, and encourage others to take up a more sustainable lifestyle. Also, tacos.
Email: Nick@greenbeverly.org
Madison Tetens

Project Manager
Madison is originally from upstate New York, but has called the North Shore home since 2024 with her husband and her cats (Toast and Chowder). After her AmeriCorps service term introduced her to the nonprofit sector, she’s determined to make a difference in the community she’s built here. With an educational background centered around environmental conservation, she’s excited to contribute to Green Beverly’s mission to see a more sustainable future. In her spare time, Madison loves playing board games, drinking too much coffee, and swimming.
Email: Madison@greenbeverly.org
Nelda Quigley

Volunteer Coordinator
Nelda Quigley is a nature lover, passionate gardener, and enthusiastic learner who loves connecting people with opportunities to use their talents for the betterment of local and global communities. Green Beverly's mission aligns with her desire to bring the community together to protect our planet for future generations, motivated by dreams for her children and grandchildren's well-being.
Nelda brings extensive experience in volunteer and corporate management, community organizing, and education. Her past roles include Director of Volunteers at Beverly Hospital, Brigham, Brooksby Village, Endicott College, and Salem High School.
Email: Nelda@greenbeverly.org
Simone Wagner

Webmaster
Simone Wagner is a product specialist with experience in training, customer experience, and web development for library and archive-based SaaS companies. Putting to use her ample experience working in the software sector, she helps to maintain the Green Beverly website.
She has a BA from The New School, BFA from Parsons School of Design, and MLIS from Simmons University. As a recent resident to Beverly, she is excited to contribute to the work of Green Beverly to help educate the public and build a more sustainable community in the place she now calls home.
Email: Simone@greenbeverly.org

Sustainability Coaches

Sabrina Auclair

BUYING LOCAL, SMALL BUSINESS & PACKAGING
Sabrina has been a Beverly resident since 2017 and is the owner of the only Zero Waste Store in town, Unpacked Living. A Colombia native with a big love for the planet and a Digital Marketing Background.
Her experience as a sustainable business owner and plastic-free advocate gives her the knowledge necessary to guide our residents and businesses on the path to a greener experience.
Sabrina educated hersef about the local recycling programs, compostig and waste diversion and management to be able to understand the need for waste prevention.
Rosemary Malfi

Pollinators and Ecological Gardening
Rosemary Malfi (she/her) serves as the director of conservation policy at the Xerces Society, where she is working to support and advocate for policy solutions that sustain insects and other invertebrates and that promote biodiversity and ecosystem health broadly. Rosemary holds a Ph.D. in environmental sciences from the University of Virginia (2015) and completed postdoctoral research positions in entomology at UC Davis and in Biology at UMass Amherst. Her research focused on the influence of food resources and disease on bumble bee populations.
Before coming to Xerces, Rosemary worked at the Northeast Organic Farming Association (NOFA/Mass), where she spent two years coordinating a grassroots network of community groups dedicated to pollinator protection and pesticide reform in Massachusetts. Rosemary lives with her family in Salem, where she enjoys cultivating a native plant gardening, bird- and bug- watching, and raising two young nature lovers.

Check out her Interview here!
Nathan Seavey

GREEN REAL ESTATE AND SOLAR
Nathan is a long time lover of environmental solutions. He has extensive knowledge of home systems and construction, including solar panels, heat pumps and geothermal. He provides valuable insights for homeowners as they explore adding environmentally friendly features to their homes and landscaping while improving the value of their homes.
He is currently a Green Real Estate and Solar coach for Green Beverly. Based in Beverly's Ryal Side neighborhood with his wife and two sons, he specializes in helping people transact homes or real estate investment assets, and strategizing with clients to build long-term wealth through real estate.
Nathan is deeply invested in the North Shore community. He serves as President of the Ryal Side Civic Association, and holds board positions with the Beverly Rotary, History Alive Theatre, First Parish Church, and the Beverly Economic and Cultural Development Council.

Check out his Interview here!
Sarah Cullinan

PLANT BASED DIET
Sarah has been a Beverly resident, but was born and raised on the North Shore and is excited to raise her son in the same ocean-side setting she grew up in. She is a nine-time marathoner, and also enjoys experimenting in the kitchen and cooking for her family and friends. Sarah currently works on grid and utility programming at Massachusetts Clean Energy Center, and sees her career as helping to change the local energy system from the top-down. Her prior career was in energy & environmental consulting. Sarah’s coaching expertise, however, is in how to transition to a lower-impact diet. She became a vegetarian in 2005 in an effort to reduce her own carbon footprint, and has learned about nutrition through fueling a decade of marathon and triathlon training, and now a husband and young son, on a plant-based diet. She believes that there are numerous practical, healthy pathways to reducing the environmental footprint of our food choices. Sarah holds a bachelor's degree in Economics and Environmental Studies from College of the Holy Cross and a joint Master of Environmental Science/MBA from Yale School of the Environment and Yale School of Management.
Tom Keeley

SOLAR & NET-ZERO HOME DESIGN
SOLAR:
Current projections have demand for electricity tripling with the electrification of the heating and cooling of structures, EV demand for cars and trucks and indoor grow spaces. Bottom line, electrical rates will rise substantially to add clean production and enhancements to the grid to deliver the power.
With tax credits expiring for residents at the end of 2023, there is a tremendous economic incentive to install solar now.
Solar installers are overwhelmed with demand, the grid has bottle necks in capacity and many residences and businesses are poor candidates for solar.
But, any size solar array will be a great hedge against future energy price increases.
Since 2008, my wife and I have added 10 solar arrays to residential and commercial buildings with 4 different solar installers and 6 DIY installations.
Please feel free to send us any of your questions large or small.
—————————————
NetZero Home Design:
With all the challenges and demands on the electrical grid, any retrofits to the insulation, efficiency of heating and cooling systems, windows, and doors of your residence or building will have a positive economic payback.
Recently, we completed a new construction Net Zero in Hamilton. There was room on the site for an economical 7 ton horizontal geothermal system, 14kw solar array, well insulated space and a passive solar setting of the structure.
There are many different avenues to create a very energy efficient renovation or new construction of a structure. Anything close to a Net Zero design would be a good goal.
Sean Leach

ELECTRIC VEHICLES
I have lived in Beverly for 8 years, and have been an active member of the community. Currently serve on the Clean Energy Advisory Committee, Cable Commission, and Broadband Task Force.
I have more than 20 years in technology and IT, with the past six years spent in clean energy consulting, EV charging infrastructure, and now school bus electrification.
I love technology, and helping people embrace it to make a positive impact in their daily life. Cars and motorcycles are a huge passion of mine, and EVs are the perfect marriage of technology and transportation. Helping people go electric is something I enjoy immensely. I also have a fair bit of knowledge in the solar world, and have had solar on my roof at home for a number of years.
In addition to the above, helped expand Beverly's curbside compost enrollment from around 100 people to more than 700.
Maddi McKenna

CHILD-ORIENTED SUSTAINABILITY
Maddi McKenna is a 23 year old recent college graduate who has lived in Danvers, MA her entire life. She received her B.S. in Environmental Conservation and Sustainability from the University of New Hampshire in May of 2020. Her passion for the environment stems from her love and respect for the beach and ocean as it is her favorite place to be, no matter what time of year. Maddi worked at the Ipswich River Wildlife Sanctuary for two years as a field teacher. She loved being able to explore the sanctuary with children and teach them about various natural history and ecology topics. Maddi now works at Change is Simple as a lead educator teaching young students about climate change, sustainability, and environmental science through various hands-on lessons. Working for Change is Simple gives Maddi hope and optimism for the future in regards to climate change. She is passionate that education is a catalyst for positive impact and is one of the most important components in combating climate change. Maddi is so excited to be working with Green Beverly and to help contribute to their mission to help educate people about sustainability through conversation and making real life changes.
Lyndall Robinson

ELECTRIC BIKES & ROAD BIKES
Lyndall has been living and working in Beverly since 2015, after moving here to hand build bicycles. She is an experienced industrial designer and leads a team of workers through the process of building bikes out of carbon fiber. Second to bikes, Lyndall loves fly fishing and her cat!
Lyndall’s sustainable practice comes in the form of transportation. She ditched cars long ago in favor of electric bikes and road bikes. She and her girlfriend also use green earth compost for the garden that flourished during the pandemic.
Ella Speidel

FAST FASHION
Ella Speidel was born and raised in Beverly, MA and is currently pursuing a bachelor's degree in Geography and Sustainability at Salem State University. She is focusing her concentration on environmental sustainability and minoring in psychology. Her passion for sustainability stems from her connection to the ocean and coastal environment being raised on the Northshore. This led Ella to participating in various beach clean ups and wanting to explore new ways to get involved in environmentalism. She volunteered for Salem State’s MASSPIRG program during the Spring 2021 semester on their Fighting Climate Change Campaign and became a Green Beverly intern in June of 2021.
She is passionate about taking action against the detrimental fast fashion industry and educating others on small changes that can collectively make society more sustainable. Green Beverly has already given Ella the opportunity to get involved with various departments like marketing, coaching, community outreach, and more. She is inspired by the variety of backgrounds, interests, and expertise Green Beverly has accrued to be a resource for others wanting to live more sustainably.
Check out her interview here!
Terry Steimer

SUSTAINABLE LANDSCAPE DESIGN
Terry Steimer is a Master Gardener and NYBG certified Landscape Designer currently living in Beverly where she owns a small Landscape Design company named 🐝 ‘BUZZ’ 🐝.
When she is not working beautifying area homes you can find her hiking local open land spaces or racing sailboats.
Iris Weaver

WILD EDIBLES, HERBS & PLANTS
Iris is an herbalist and wild edible and medicinal plants and herbs expert, who focuses on wild and cultivated plants that grow locally. These are often plants commonly found in backyards, gardens, or even public areas – for food, medicine, and crafts – and she enjoys sharing how to use them in sustainable and affordable ways. Iris has extensive and unique knowledge of sustainable food practices and making and using simple herbal medicines and body care.
Beverly Waste Reduction Committee

WASTE REDUCTION, COMPOST, RECYCLING & TRASH
The Beverly Waste Reduction Committee is a nine-member municipal committee that serves in an advisory and consulting capacity to the Mayor, City Council, other interested City departments/boards, and the citizens of Beverly in matters related to waste reduction, recycling and composting. Key responsibilities of the Committee include identifying and exploring options to reduce waste generation and increase recycling and composting, assisting the City in establishing policies that are oriented towards decreasing waste disposal, and serving as a resource for outreach and education.
Committee members are all Beverly residents that share a common interest in fostering sustainable waste management, exploring innovative and beneficial policies and practices, taking personal steps to make a difference in our community, and advocating for action on a municipal level. As a group, the Committee monitors initiatives on a local and state level, and collaborates regionally, when appropriate, to pursue common goals. Committee members serve on a volunteer basis, and are actively engaged in work and other community activities.
Amy Henderson is currently Chair of the Waste Reduction Committee.
Daniel Mello Guimarães

CLEAN ENERGY PROJECT ECONOMICS

Daniel Mello Guimarães is a seasoned business executive with extensive experience in the solar energy and financial services industries. As the CEO and Co-Founder of Boston Solar, he led the company to become a premier residential and commercial solar installer in Massachusetts, achieving over $25 million in annual revenues. His tenure saw the successful execution of high-profile community focused campaigns and the development of robust sales, marketing and leadership teams. Prior to his work in solar energy, Daniel held significant roles at Lloyds Banking Group across London, Buenos Aires, and Brussels, specializing in loan syndication, restructuring and acquisition finance. He holds an MSc in International Securities, Investment and Banking from the ISMA Centre, University of Reading, and a double BA in Economics and French from Davidson College. Fluent in English, French, Portuguese, and Spanish, Daniel is also an active board member of SEBANE, currently serving as Vice-President.

Board

Julie DeSilva, Board Chair (Board Secretary 2021-2024; Board Chair 2024-2025)

A lifelong resident of Beverly and a graduate of Beverly Public Schools, Julie is a communications professional who spends her volunteer time working with like-minded individuals and organizations working to teach people (and everyone in their circles of influence) to be better stewards of the planet. She has proudly worked the waste station at every Homecoming Lobsterfest for more than 15 years!

Julie has worked for years as a Beverly volunteer at Beverly Public Schools, on city committees and campaigns, and on the board of environmental nonprofit Change is Simple. She brings her passion for recycling and sustainability and her hometown combined with her desire to communicate, connect, and collaborate to everything she does. As urgent as the work of Green Beverly is, she always strives to make things fun too!
Dr. Ben Zolper, Board Secretary (2024-2027)

Ben Zolper has moved around a bit and made Beverly home in 2018. He joined Green Beverly due to a desire to leave a better world for the kids and grandkids – his and everyone’s!
Ben was born in Delaware, went to Rutgers, attended medical school in Southampton UK, underwent additional training in Syracuse NY, and then moved to Bangor, Maine in 1993. There he founded, administered, and grew a medical practice and also became involved in many non-profit boards and for-profit business enterprises. His varied experience is helping Green Beverly in myriad ways!
Ben and his wife, Sharon, have three married children and seven grandchildren. They moved to Beverly to be closer to the five grandchildren who live nearby. Avid outdoors people, they like being close to the ocean.
Dean Berg, Executive Director (Board Chair 2021-2024; Ex-Officio 2024-)

Dean became Executive Director of Green Beverly because he wanted to bring his experience in residential sustainability and corporate business to his hometown.
While studying various approaches to residential engagement in 2017, Dean found that the most effective approach is to look at residential engagement from a community perspective – integrating the residents with the local business community, school systems, and municipal government. He believes that taking a systems-based approach to residential sustainability yields the greatest impact in the shortest period of time.
Dean has engaged Beverly’s local government officials, Beverly Public Schools administration, other local nonprofits, the business community, and 1000s of like-minded Beverly residents in the effort to increase awareness and make small changes to have a collective impact in Beverly. He is dedicated to growing the reach and impact of Green Beverly quickly, understanding that the need for what we do is urgent and the impact significant! Dean and his wife, Christina, enjoy biking around Beverly.
Steven Cohen, Board Member (2024-2027)

Steve Cohen has been a member of more than 25 boards for commercial and nonprofit organizations and currently serves as Chairman of the Board of New England Hydropower Company, which retrofits existing dams in several states to generate electricity. He has a clear passion for board service and the environment, working closely with leadership and Green Beverly’s Board on development so that our sustainability organization can be sustainable!
A Columbia Law School graduate, Steve worked first in politics and government, with unique jobs including Commissioner of Boston’s Air Pollution Control Commission and head of Jimmy Carter’s presidential campaign for the world outside the U.S., “delivering” the votes of about 250,000 expatriate Americans in support of President Carter’s election. He worked in commercial real estate before founding The Negotiation Skills Company, an international corporate training firm serving some of the largest companies in the world. He also spent 10 years as a visiting professor at Groupe HEC, the most prestigious business school in France, and 13 years as an adjunct professor at Brandeis University’s International Business School.
Steve and his wife, Andrea, live in Prides Crossing where they proudly tend to beautiful flower and vegetable gardens on their property.
Tom Keeley, Board Member (2021-2024; 2024-2027)

Tom Keeley joined Green Beverly with the hope of flattening the sustainability learning curve for Beverly residents and businesses and making the adoption of sustainability best practices as painless as possible. He generously shares his time and knowledge on solar and sustainable heating solutions with anyone who is seeking information.
A publishing professional and sailing enthusiast, Tom’s sustainability journey began in earnest in 2008, when he joined Beverly’s Clean Energy Advisory Committee (CEAC). Tom and his family have lived in Beverly since 1986. They have a deep love and appreciation for this wonderfully diverse colonial seaport town! He and his wife, Monica, have completed 10 solar installations, countless Mass Save insulation and energy audits, and construction of a Net Zero home.
Bob and Maida Broudo, Board Members (2024-2027)

Bob and Maida are Green Beverly’s first “Family Seat” on the board, sharing one seat and one vote but giving Green Beverly the gift of two minds and two hearts with diverse experience in the professional and nonprofit worlds. As parents and grandparents they believe that there is no greater cause than working to mitigate the effects of climate change and raise awareness on the topic right here in Beverly
Bob retired from Beverly’s Landmark School after working there for 50 years, more than 30 as its president/headmaster. Bob is no stranger to mission-driven work! He also serves on the board of Build Health International, headquartered at Cummings Center, has served on the boards of Glen Urquhart, Waring, and Brookwood Schools, and has served on the Beverly Police Department Community Advisory Council (CAC) for years.
Maida has an extensive background in healthcare and teaching. She has worked for more than 25 years in oncology at Massachusetts General hospital, initially as a radiation therapist and more recently as a clinical liaison and project manager. She has taught at Suffolk University, Endicott College and Harvard Medical School. Maida has a master’s degree in journalism from the Harvard Extension School and continues to do freelance health and medical journalism. She is currently a project manager for the Global Brain Care Coalition at Massachusetts General Hospital and a yoga instructor.
Cathy Rumery, Board Treasurer (2024-2027)

Cathy Rumery joined Green Beverly’s board with a desire to support the community where she and her clients live and work.
Cathy was one of the very first tenants at the Cummings Center, built on the site of the former United Shoe Company. A CPA, she has been proudly providing tax and accounting solutions to North Shore families and businesses for more than 25 years.
Cathy has shared her financial expertise with many local organizations, including Beverly Homecoming, the Greater Beverly Chamber of Commerce, and the Essex Tech Foundation.
She and her husband, Ralph, like to travel and enjoy boating.
Sean Leach, Advisory Board

Sean has lived in Beverly for 8 years and has been an active member of the community, serving on the Clean Energy Advisory Committee, Cable Commission, and the Broadband Task Force. Sean also helped expand Beverly's curbside compost enrollment from 100 people to more than 700!
He has more than 20 years in technology and IT, and currently works in clean energy consulting, EV charging infrastructure, and school bus electrification.
Sean loves technology and helping people embrace it to make a positive impact in their daily lives. Cars and motorcycles are a huge passion of his, and EVs are the perfect marriage of technology and transportation. Helping people go electric is something he loves! He also has knowledge of the solar world, and has had solar on his roof at home.
Teegan Innis, Advisory Board

Teegan is a nearly lifelong resident of Beverly. He enjoys his hometown's location near plenty of outdoor activities, as he is an avid hiker, SCUBA diver and stand-up paddleboarder. Teegan joined Green Beverly because he is passionate about sustainability and doing our part to protect the planet.
Professionally, Teegan holds degrees in marine biology and spent 4 years as a Coral Research Biologist prior to his current role as a Data Scientist at an environmental and sustainability consulting firm. He enjoys approaching problems analytically by using data to understand complex issues and make informed decisions. He hopes to apply these skills to give back to his community.
Sam Gifford, Advisory Board

Sam was born in Beverly, grew up all over the North Shore and currently lives in Beverly with his wife (Shelby), son (Ty), and dog (Ozzie). Sam started his undergraduate studies at Assumption College, and holds a Business Degree with a concentration in Accounting, as well as a minor in Mathematics from Salem State University. Shortly after college Sam moved to Denver, Colorado to start his career with Deloitte & Touche, and later worked for both public and private companies in Boston, MA as a financial controller. Since returning to the North Shore, Sam has switched careers to be involved in numerous local small businesses; he owns a local CrossFit gym, CrossFit Variance, works as a licensed Real Estate Agent with Churchill Properties, and manages Green Beverly’s Coaching Program. As a designated GREEN Realtor, Sam helps his clients make environmentally conscious decisions when it comes to certain home maintenance and renovation projects, helping reduce their home’s carbon footprint, creating monetary savings on their monthly utility bills, and adding to their home’s value. Sam enjoys spending time with friends and family, a cold pint at a local brewery, and anything related to health and fitness.