According to the revised plans of these colonies, trees will be translocated/ transplanted instead of being cut, which the environmentalists feel will be a "failure".
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/environment-clearance-recommended-delhis-sarojini-netaji-kasturba-nagar-colonies
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/economic-times-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/housing
[5] http://admin.indiaenvironmentportal.org.in/thesaurus/central-expert-appraisal-committee-ceac
[6] http://admin.indiaenvironmentportal.org.in/thesaurus/environment-clearance-ec
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/centre-science-and-environment-cse
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment