Environmental Assessment
Volume B-3.5
Mine
Noise
Ambatovy Project
63
January 2006
Weather data was measured at monitoring locations during each 24-hour survey
period. Noise measurements are most accurate during weather conditions
conducive to low relative humidity, warm temperatures (below 35°C), low winds
and no cloud cover. Weather information was recorded throughout the
monitoring period and action taken where necessary to ensure conditions
remained optimal during noise measurement.
Two locations near the mine site were selected for conducting the noise survey:
Behontsa and Berano. These locations were considered representative of the
community noise receptors near the mine.
Detailed information regarding noise monitoring location selection and
monitoring methods are provided in Volume I, Appendix 5.1.
3.5.3.3 Summary of Results
A summary of existing noise levels at assessment receptors is provided in
Table 3.5-1.
Table 3.5-1 Summary of Existing Noise Levels, Ambatovy Project Mine Site
Location
Period
Quietest Hour
L
eq
[dBA]
Period L
eq
[dBA]
day
37
42
Behontsa
(a)
night
33
34
day
23
41
Berano
(a)
night
20
40
day
23
41
Sahamalotra
(b)
night
20
40
(a)
Values taken from baseline measurements.
(b)
Baseline measurements from the Berano monitoring location were assumed for this receptor.
Detailed noise measurements including tables of hourly noise levels and graphs
of one-minute raw data are provided in Volume I, Appendix 5.1.
3.5.4
Impact Assessment
3.5.4.1 Issue Scoping
Through consultation with stakeholders and review of previous environmental
assessments for resource developments in Madagascar and elsewhere, several
