8.2.6 Ambient Noise Level in Bangalore City
Baseline noise monitoring was carried out to determine the background ambient noise level at different places near the proposed ELRTS alignment in Bangalore city. For this purpose, 15 sampling were selected with due consideration to cover the sensitive, residential, industrial and busy commercial areas. A list of monitoring points is given in Table 8.2-5. The noise level was monitored for about 30 minutes in each location during morning, afternoon and night time. The morning period (8.00 - 11.00 hrs) represents peak traffic hours, while the afternoon period (13.00 - 16.00 hrs) represents mostly non-traffic hours while the night time (24.00 - 03.00 hrs) represents the background noise. Monitoring was carried out in all the cases near the property line along the existing project road. The noise levels so obtained are plotted in Fig. 8.2-11, classified by type of area, together with ambient noise standards for each respective area for night and day set forth by Karnataka State's Environment Protection Rules (1986). It can be seen from Fig. 8.2-11 that almost all data exceed the standard values.
