Navi Mumbai Municipal Corporation warns of strict action on air pollution at construction sites. Facing flak from various quarters over rising pollution in the city post-monsoon, Navi Mumbai Municipal Corporation (NMMC) has ordered strict enforcement of air-pollution control measures at construction sites ahead of winter, warning that violations could result in immediate stop-work notices, sealing of the project and heavy fines. Municipal commissioner Kailas Shinde issued the directions at a joint meeting of architects, builders.