Court in the case of Bombay Dying and Manufacturing Company Limited V/s. Bombay Environmental Action group and others reported in (2006) 3 SCC 434, in para 341, the Apex Court has observed that delay and laches on the part of the writ petitioners are very relevant factors which are to be taken into consideration while deciding the question of grant of relief in the writ petition. The Supreme Court has observed that in large number of cases, the Apex Court has laid down that in cases where by reason of delay and/or latches on the part of the writ petitioners, the parties have altered their positions and/or third party interests have been created, public interest litigations may be summarily dismissed. In para 342, the observation made by the Supreme Court in Narmada Bachao Andolan V/s. Union of India, reported in (2000) 10 SCC 664 , has been referred to. In the said case, it has been held by the Supreme Court that merely because a petition is termed as PIL it does not mean that the ordinary principles applicable to litigation would not apply and if a project is undertaken and the same is challenged after its execution has commenced, it should be thrown out at the very threshold on the ground of laches. While in para 343, the