The desilting of Adyar river was launched at Manapakkam and the South Buckingham Canal near the East Coast Road Old Mahabalipuram Road junction at Sholinganallur.
The order warns that unauthorised deviations and proposals for post-facto ratification will invite disciplinary action against the officials concerned.
The disciplinary proceeding has been initiated against the official under the provision of the TN Pension Rules based on a government letter in May last year.