Reflecting the urgency, the three-member committee has been asked to submit its report by August 9.
It will seek to ascertain the "factual position" about the allegations of illegal mining in the area and suggest further course of action in the matter, a government statement said.
The committee will be headed by Saroj, a director in the Ministry, with deputy collector of mines of IBM Dehradun office G C Meena and director in the regional office of Environment Ministry in Lucknow K. K. Garg as members.
It also referred to reports in print and electronic media with visuals of heavy machinery being used in illegal sand mining.
Nagpal, the 28-year-old SDM of G B Nagar, who led the crackdown on sand mining mafia in her district, was suspended on July 27 ostensibly for ordering demolition of a mosque's wall allegedly without following the due process.
According to the statement, no sand mining from any mining lease area can take place without obtaining prior environment clearance.
