Seismic Vulnerability And Burgeoning Population Warrants Seismic Hazard Assessment And Microzonation As A Step Towards Mitigational Measures, Especially In The Regions With The Episodes Of Occurrence Of Past Earthquakes Of Large To Great Magnitudes. The Indian Subcontinent Has Witnessed The Occurrence Of Eight Major Damaging Earthquakes During The Past Few Decades (1988–2008). Among The Eight Earthquakes, Three Of Them Occurred In The Peninsular India (1993 Latur Earthquake; 1997 Jabalpur Earthquake; And 2001 Bhuj Earthquake), The Other Four In The Himalayan Region (1988 Bihar-Nepal Earthquake; 1991uttarkashi Earthquake; 1999 Chamoli Earthquake; 2005 Kashmir Earthquake) And The Other Is The 2004 Sumatra Earthquake, Which Triggered The Tsunami And Greatly Affected The Andaman And Nicobar Islands. These Earthquakes Have Caused Wide Spread Damage Across The Continent, Causing Horrendous Devastation And Liquefactions Resulting In Loss Of Life And Property Worth Millions Of Dollars. The Uniform Building Code Lays Down A Dynamic Approach Allowing The Response Of The Structure To Be Established Through Response Spectrum Analysis Or By Time-History Analysis. The Design Response Spectra Or Design Ground Motion Time Histories Can Thus Specify The Design Ground Motion. Design Response Spectra Can Be Determined Either From The Site Specific Ground Response Analysis, Or From Smoothened Normalized Spectral Shapes Through Site Specific Seismic Hazard Assessment And Ground Motion. As A Site Specific Analysis, The Present Study Region Includes The Talchir Basin Of Orissa, Kolkata And Haldia Of West Bengal, India With Episodes Of Historical Earthquakes. Five Seismic Source Zones Are Identified That Can Cause Damage To Kolkata And Haldia And The Maximum Magnitude (Mmax) Is Estimated For Each Source Zone To Compute The Peak Ground Acceleration (Pga). The Spatial Distribution Of Pga Over Kolkata Varies From 0.10 G To 0.34 G And A Large Part Of Kolkata Can Experience Pga Above 0.25 G, Suggesting That Kolkata Is In The Seismic Zone Iv And Not At The Bureau Of Indian Standards’ Boundary Of Zone Iii And Iv Of The Seismic Zonation Map Of India. The Pga Distribution Over Haldia Depicts Maximum Peak Ground Motion Expected At The Southern Part, Which Is Most Inhabited With Life Line Facilities Where Pga Varies From 0.09 G To 0.19 G. Microtremor Survey Was Conducted In Haldia And Talchir Basin For The Site Characterization In Terms Of The