The much-delayed Navi Mumbai special economic zone (SEZ) promoted by Reliance Industries chairman Mukesh Ambani will come up for formal clearance before a central government panel on July 12 after getting the green signal from the Maharashtra government on issues raised by the revenue department.The Board of Approval (BoA) will also be taking up a multi-product SEZ at Chhindwara, Madhya Pradesh, the Lok Sabha constituency of Commerce and Industry Minister Kamal Nath, for clearance.The board will consider 38 proposals at its next meeting. If approved, this will take the overall SEZ approvals - formal as well as in-principle - to over 500 after the new SEZ Act came into force in 2006, government officials said.The Navi Mumbai proposal was referred to the revenue department as the proposed zone was said to be non-contiguous and a highway passes through it. The report of the department, while giving clean chit on the issue, also wanted to know what would promoters do to protect the interests of villagers in the area.The views of the state government were also sought by the board and its approval came last week that have been circulated among the members of the BoA for consideration.