NEW YORK (AP).- The 2012 opening of the Sept. 11 museum at the World Trade Center will be delayed by disputes over redevelopment costs, a person familiar with the construction project said Monday. The dispute between the National September 11 Memorial & Museum foundation and the Port Authority of New York and New Jersey was first reported in The Wall Street Journal. The foundation is responsible for the museum’s cost while the Port Authority, which owns the site, is paying for infrastructure improvements. Exactly who should pay for each component of the project has been subject to debate, and the dispute responsible for the delay partly centers over $156 million that the Port Authority says the foundation owes. The person familiar with the construction said the museum’s opening will be delayed because the Port Authority has stopped approving new construction contracts. The person spoke