Annex C          Baseline Noise Monitoring Data at Ash Lagoon

 

a.         07:00-19:00 hrs on Normal Weekdays

 

Date

Time

5-min Leq  (dB(A))

1/11/2000

13:00-13:30

60.3

61.5

59.8

60.0

60.0

59.7

2/11/2000

16:00-16:30

56.7

55.8

56.5

61.9

69.3

58.5

3/11/2000

11:15-11:45

58.0

59.8

60.6

59.0

57.6

60.1

4/11/2000

07:10-07:40

54.1

53.6

53.4

54.2

54.0

71.7

6/11/2000

15:15-15:45

54.6

54.9

68.8

61.1

59.4

59.2

7/11/2000

17:00-17:30

60.6

56.2

57.0

57.8

57.0

58.2

Note:    5/11/2000 is a Sunday.

 

b.         07:00-23:00 hrs on Holidays and 19:00-23:00 hrs on All Other Days

 

Date

Time

5-min Leq  (dB(A))

2/11/2000

20:00-20:30

56.4

56.8

55.9

56.0

56.0

56.1

3/11/2000

20:15-20:45

57.6

57.4

56.7

57.9

57.7

57.8

4/11/2000

20:10-20:40

56.2

56.2

56.5

55.9

55.9

56.8

5/11/2000

07:00-07:30

64.6

53.5

53.4

53.5

52.8

52.8

6/11/2000

20:40-21:10

55.8

55.1

57.3

56.1

56.6

55.0

10/11/2000

19:35-20:05

56.4

56.3

56.6

57.0

56.6

56.6

11/11/2000

20:25-20:55

56.4

57.4

57.2

56.9

57.1

57.3

 

Note:    Noise data on 1/11/2000 and 7/11/2000 for the night time period 19:00-23:00 were discarded due to windy conditions.  Hence, the noise monitoring was extended to 11/11/2000.   Further, as the noise data during 8-9/11/2000 were also invalidated due to windy conditions, only the data during 10-11/11/2000 of the same time period were presented.


c.       23:00-07:00 hrs of Next Day

 

Date

Time

5-min Leq  (dB(A))

1/11/2000

02:20-02:50

54.2

54.9

54.9

54.6

55.0

55.0

1/11/2000

23:00-23:30

56.5

56.6

56.3

56.3

56.3

55.1

3/11/2000

00:25-00:55

56.3

56.3

55.6

55.9

56.1

56.3

4/11/2000

06:00-06:30

54.8

54.9

54.9

58.0

55.0

64.5

5/11/2000

00:45-01:15

55.9

56.0

55.8

56.8

55.8

57.1

6/11/2000

04:25-04:55

55.3

56.6

56.5

56.4

56.2

56.1

7/11/2000

03:00-03:30

55.6

53.5

53.4

54.4

53.7

53.6