MACAN partnered with the OA Alliance to host a workshop in September 2024 that brought together leaders from state agencies in the Mid-Atlantic region. To date, Maryland, New York, and New Jersey have been working to draft and implement OA Action Plans per their membership in the OA Alliance, while Virginia and Delaware continue to participate in MACAN activities. This in-person workshop brought agency representatives from the 5 states together to discuss how regionally-coordinated science and data synthesis can actively support state governments in further advancing priorities and information needs to support implementation of their OA Action Plans. Similar to the OA Alliance's West Coast Acidification and Hypoxia Symposium, MACAN co-hosted this meeting to create a space for states to explore common opportunities and challenges related to:

• Measuring and communicating impact;
• Designing synthesis and visualization products that support existing management priorities;
• Connecting state water quality data portals within a regional hub;
• Developing indicators;
• Integrating existing policies for climate, nutrients, and stormwater into OA decision-making;
• Evaluating water quality impacts;
• Exploring the role of coastal wetlands/submerged vegetation;
• Identifying sustained sources of funding to support implementation activities, covering topics like assessing risk and vulnerability, monitoring acidification for mitigation, and evaluating blue carbon systems.