Consent to Operate is necessary before carrying out any action at the industrial plant or activity. For all categories of Industries and Projects, every State Pollution Control Board has prescribed a Performa for obtaining consent to operate. The industries required to obtain consent to operate for NOC from the Pollution Control Board to operate an outlet under the Water (Prevention and Control of Pollution) Act, 1974, and to operate an industrial plant under the Air (Prevention & Control of Pollution) Act, 1981.