The state-owned power major was found to have violated muck disposal site maintenance norms, resulting in damage to the environment.
According to NDRF, the excavation work went on from 11:50 pm to 2:15 am last night to dewater the tunnel.
One body was recovered late Thursday night from the banks of the Alaknanda at Helang between Joshimath and Pipalkoti, Chamoli district police said.
As operations entered the 10th day, identifying bodies and body parts is becoming the challenge.
The tunnelling work started from both ends but it is not joined. So, rescuers cannot go inside the tunnel.
A total of 11 bodies have been recovered from the Tapovan tunnel out of which two were recovered on Tuesday.
The death toll in the avalanche triggered by the bursting of a glacier in Chamoli has gone up to 58 as a total of 11 bodies are recovered from the Tapovan tunnel, whereas 146 people are still missing.
We hope to find bodies so that the families can perform the last rites at least),” an official closely monitoring the situation told TNIE.
Nine bodies have so far been recovered from the tunnel at Tapovan-Vishnugad hydel project site taking the toll in the tragedy to 54, while officials say 115 people are still missing.
The bodies were recovered this morning from the Adit tunnel at the NTPC's Tapovan-Vishnugad project site, Chamoli District Magistrate, Swati S Bhadauria, said.
Meanwhile, the drilling a hole of 1 ft diameter on the ground of the tunnel has failed, said the officials who were present in the meeting to review the progress of rescue operations.
These are the first bodies to be recovered from the site where muck-clearing and drilling operations have been underway on a war-footing since last Sunday.
Uttarakhand floods: New plan to drill hole with large diameter in Tapovan tunnel for camera insertion
Drilling of a 12-metre-long hole of 75 mm diameter in the intake adit tunnel to its inside has been successful, said NTPC General Manager, R P Ahirwal.
The women involved in the rescue and relief operations at Chamoli where the flashfloods wreaked havoc, are persevering to help bring hope back to the state.
The rescue operations were suspended temporarily only to resume after two hours at around 4 pm.