10,281 Ganpatis immersed as Thane noise nears 100 dB. Thane city bade a noisy farewell to 10,281 Ganpati bappa idols on the final day of immersion on Friday as noise levels at select visarjan points touched nearly 100 dB. The noise pollution was less compared to the previous years, anti-noise activist Dr Mahesh Bedekar observed.