Our mission: to catalyze the transition to a sustainable economy and facilitate environmental responsibility among businesses, residents, and government. One Montgomery Green was formed to catalyze the County’s transition to a sustainable economy, facilit One Montgomery Green is a nonprofit organization, 501 (c) (3), located in Montgomery County MD dedicated to engaging the community in education and outreach that promotes sustainable communities with a visibly green and healthy environmental footprint. OMG leads numerous community events including stream cleanups, native plantings, invasive plant removal, paper shredding and electronic recycling events, webinars and more.