It also warned that steps taken up by the current dispensation are in danger of remaining "mere half measures" unless immediate course correction is taken.
In an analysis of the NDA government's environmental performance over its two years in power, CSE noted that the rejection rate of projects continues to be "very low" under the current dispensation which is "no different" from its predecessor UPA-II as far as granting of environmental clearances to projects is concerned.
Elaborating on the analysis' findings on the aspect of green clearances, CSE said there is "no significant" difference between NDA government and its predecessor (UPA-II) with respect to environmental clearances granted for key sectors.
"For forest clearances, the average rate of forestland diversion has reduced when compared to UPA-II. The rejection rate of projects continues to be very low and rejection of projects coming up in wildlife sanctuaries and national parks has reduced under the NDA government," it said.
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CSE said that although measures have been taken to ease clearances but there has been "no improvement" in enforcement to protect environment and interests of local communities.
Noting that the mining and infrastructure sector remains the focus of green clearances, it said more than 300 projects (new and expansion) combining coal and non-coal mining have been given environmental clearances by the NDA government in its two years in power, which includes 68 coal mining projects.
Similarly for forest clearances, the highest share of total forestland diversion is for mining projects - of about 47,473 hectares of land diverted (combining in-principle and final approvals) while 29 per cent is for mining.
Mission, the green body said the success of the programme has been around building toilets which will "clearly not be enough".
"So far, the success of the (Swacch Bharat) programme has been around building toilets which will clearly not be enough. There is very little focus on managing the waste from these toilets which, if not handled properly, can contaminate ground and surface water," CSE director general Sunita Narain said.
Commenting on the 'Namami Gange' programme for cleaning and rejuvenating Ganga, Narain said despite an outlay of Rs 20,000 crore for five years till 2019 for cleaning the Ganga, and several promising plans, on-ground action for cleaning and rejuvenating the river remains "far from satisfactory".
"In addition to this, none of the 21 proposals sanctioned since July 2014 for cleaning the river (according to the National Mission for Clean Ganga) have been implemented," it said.
"The undermining of people's participation in green clearances is also worrisome. The NDA government continues to dilute the public hearing process," Narain said.