The Concept 3A Plan provides guidelines for future development of the site for up to 305,000 square feet of facilities on 28 of the 68 acres of land in Tustin Legacy. The approval allows the South Orange County Community College District to proceed with planning and site configurations for the expansion of the Advanced Technology & Education Park with maximum flexibility for phasing of the construction. The Concept 3A Plan was approved by the South Orange County Community College District Board of Trustees in 2009.

"The City of Tustin's approval today is an important and critical step in the development of the ATEP campus and demonstrates the City's support and desire for this campus to be successful," said South Orange County Community College District Acting Chancellor Dixie Bullock. "We look forward to jointly celebrating the groundbreaking with the City by our side."

Dr. Randy Peebles, ATEP Provost said, "ATEP is quickly outgrowing its existing facilities. This approval enables us to accelerate partnerships with business, industry and other educational institutions to build a campus that trains workers for high impact, technical jobs in our region."