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Unsourced material may be challenged and removed. CRZ along the country has been placed in four categories.
The above notification includes only the inter-tidal zone and land part of the coastal area and does not include the ocean part. The notification imposed restriction on the setting up and expansion of industries or processing plaits etc. India in 1991 for the first time. Under this coastal areas have been classified as CRZ-1, CRZ-2, CRZ-3, CRZ-4.
And the same they retained for CRZ in 2003 notifications as well. CRZ-1: these are ecologically sensitive areas these are essential in maintaining the ecosystem of the coast.