“xxx……………………………….xxx………………………………………xxx 45. In conclusion, we are cognizant of the fact that the respondent's plant has been shut down since 09.04.2018. Since we have set aside the impugned judgments of the NGT on the ground of maintainability, the order dated 22.01.2019 passed by the TNPCB, being a consequential order, is also set aside. The respondents are relegated to the position that the six orders impugned before the NGT, dealt with by the impugned judgment dated 15.12.2018, and the order dated 29.03.2013, dealt with by the final judgment dated 08.08.2013, are alive and operative. Given the fact that we are setting aside the NGT judgments involved in these appeals on the ground of maintainability, we state that it will be open for the respondents to file a writ petition in the High Court against all the aforesaid orders. If such writ petition is filed, it will be open for the respondent to apply for interim reliefs considering that their plant has been shut down since 09.04.2018. Also, since their plant has been so shut down for a long period, and they are exporting a product which is an important import substitute, the respondent may apply to the Chief Justice of the High Court for expeditious hearing of the writ petition, which will be disposed of on merits notwithstanding the availability of an alternative remedy in the case of challenge to the 09.04.2018 order of the TNPCB. The appeals are disposed of accordingly.”