Chatsworth/Porter Ranch Chamber of Commerce, Membership Meeting 11:30 a.m. – 1:15 p.m. Porter Ranch Country Club, 19216 Singing Hills Dr., Northridge Contact (818) 341-2428 Board of Library Commissioners, Business Meeting 11:00 a.m. Woodland Hills Branch Library, 22200 Ventura Blvd., Woodland Hills Contact (213) 228-7555