The expert panel has suggested that there would be two components of rehabilitation plan -- physical and biological, and they would cost Rs 28.73 crore and Rs l3.29 crore respectively, besides additional ancillary expenses.
The AOL termed the findings of the panel as "biased" and alleged that expert committee's report has been leaked to the media without serving them a copy.
The NGT-appointed panel elaborated the timeline and the mechanism to be undertaken to ensure revival of the riverbed.
The tribunal had constituted the committee last year which was headed by Shashi Shekhar, Secretary of the Ministry of Water Resources, and senior scientists and experts from National Environmental Engineering Research Institute, IIT, Delhi and other agencies to inspect the site of the World Culture Festival.
Besides the two components, the rehabilitation of the floodplain would also require funds to meet the expenses of a team of experts for next 10 years along with the cost of transportation of material outside the riverbed, the committee said.
These estimates are approximate and need to be strengthened through commissioning of Detailed Project Report, it said.
Implementation of the action plan requires extensive monitoring for which the NGT may consider creating an appropriate body/team of experts, the panel said in its 31-page report.
Advocate Kush Sharma, who represented the Delhi Development Authority, refused to comment on the findings in the report and said they were going through the contents.
The green body had last year allowed AOL to hold three- day World Culture Festival on the Yamuna floodplains while expressing its helplessness in banning the event because of "fait accompli".
It, however, had imposed Rs 5 crore as interim environment compensation on the foundation for the event's impact on the environment after Yamuna activist Manoj Mishra alleged that AOL was violating NGT orders.
Later, a seven-member expert committee had told NGT that the extravaganza organised on Yamuna riverbed has "completely destroyed" the riverbed.
The committee had observed that entire floodplain area used for the main event site between DND flyover and the Barapulla drain (on the right bank of river Yamuna) has been completely destroyed, not simply damaged.
"The ground is now totally levelled, compacted and hardened and is totally devoid of water bodies or depressions and almost completely devoid of any vegetation.
The earlier committee, in its 47-page report, has said that due to the three-day event, the floodplain has lost "almost all its natural vegetation" like trees, shrubs, tall grasses, aquatic vegetation including water hyacinth which provides habitat to large number of animals, insects and mud- dwelling organisms.
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