Central Pollution Control Board
The validity and renewal of consent is one of the most fundamental aspects of consent. The concept of validity, as it applies to consent, is an important one to understand. Consent Valid Unless The Person Has A Valid Reason For Refusing To Consent. Mainly the pollution control board issue it for 3 to 5 years. Consent to operate remains valid for a period of 5, 10, and 15 years according to the red, orange, and green category.