Guideline on handling cluster issues : The original Environmental Impact Assessment ( EIA ) notification does not provide for the procedure to handle cluster situation, which has been proposed in this guideline and will become part of the notification. One EIA will be prepared for one cluster irrespective of number and size of mining leases in that cluster, if the area is more than 5 hectares.
Taken from a book am reading on Environment, the author isn’t internationally known but I will still mention his name, Shankar.