S.B.SINHA, J.

1. : - All these writ applications involving common questions of law and fact, were heard together, and are being disposed of by this common judgment.

2. Initially the petitioner filed the aforementioned applications for issuance of an appropriate writ for quashing the orders passed by the Bihar State Water Pollution Control and Prevention Board, Patna (respondent No. 2) and the Member Secretary, Bihar State Water Pollution and Prevention Board, Patna (respondent No. 3) whereby and whereunder the said respondents in purported exercise of their powers conferred upon them under Water (Prevention and Control of Pollution) Cess Act, 1977 (hereinafter referred to as the said Act) assessed the amount payable by the petitioner for consumption of water in its industries.

3. According to the petitioner while passing the said orders, the respondents Nos. 2 and 3 failed to allow rebate to the petitioner as contemplated under Sec. 7 of the said Act.

4. The petitioner thereafter filed an applications for amendment of the writ application whereby and whereunder it sought to insert some paragraphs in the writ applications, namely, paragraphs 20, 21 and 22 thereto. By reason