Acknowledgments
The authors would like to thank Mr. Vivek Bharadwaj, ExecutiveEngineer and Mr. Asim Nag (Ganga Action Plan, Phase – I), KolkataMunicipal Development Authority (KMDA), West Bengal, India, forextending their help to study the Baranagar–Kamarhati sewagetreatment plant and their staff for their co-operation duringsampling. We acknowledge the kind co-operation of Mr. SmritiRanjan Maji, Technician of The Bose Institute, Kolkata CentenaryCampus in conducting analysis by GC–MS.