Judgement of the National Green Tribunal (Southern Zone, Chennai) in the matter of Gajendran, Chennai Vs Principal Secretary/Commissioner,Corporation of Chennai dated 02/09/2015 regarding filling up the Thamaraikeni Kulam Water tank (Kottivakkam, Chennai, Tamil Nadu, which is more than hundred years old) with quarry dust for constructing water overhead water tank and sump, in order to preserve the tank thereby to maintain the ecology and protect the environment.