Office Of Human Resources--natural Resources Department Of, Resource Assessment Service, Power Plant Division Severna Park, MD 21146 Phone : (410) 260-8660 Business Category Government Offices-State Government Offices State & Local Government Offices & Public Schools Maryland State Government--natural Resources Dept Of, Resource Assessment Service, Power Plant Division Severna Park, MD 21146 Phone : (410) 260-8660 Business Category Government Offices-State Government Offices State & Local Government Offices & Public Schools