The Collaborative West Promotes Mark Lenning to Associate Lenning joined the company in 1998 SAN CLEMENTE, CA The Collaborative West recently appointed Mark Lenning to Associate in the firm. Lenning has been involved in some very significant projects including Westridge, a PGA golf course community; Bridgeport, a master planned lake-oriented community; and Sailhouse, a Caribbean influenced project in Corona del Mar, California. Lenning received his Landscape Architecture Degree from the University of California, Irvine and attended the School of Business at California State University, Fullerton.