Report of the Central Pollution Control Board, Regional Directorate (Chennai) to the National Green Tribunal in the matter of R. Prabha Vs Tamil Nadu Pollution Control Board & Others dated 01/06/2022. The CPCB report was on mechanism adopted in framing the environmental guidelines for poultry farms - August 2021 and January 2022.

The report mentioned that in compliance to the NGT order, December 10, 2021 revised environmental guidelines for poultry farms applicable to all poultry farms above 5000 birds were circulated to all SPCBs/PCCs in January 2022.