Environmental Assessment
Volume B-5.4
Mine
Human and Ecological Health
Ambatovy Project
376
January 2006
Table 5.4-3 Comparison Between Predicted Air Quality During Mine Operation
and Air Quality Guidelines
Air Quality Guidelines
[µg/m³]
Predictions - Maximum Values
(i)
[µg/m³]
Parameter
1-hr max
24-hr max
Annual
1-hr max
24-hr max
Annual
SO
2
500
(a,b)
125
(a)
50
(a)
29.2
5.9
2.6
NO
2
200
(a,b)
40
(a)
120
(a)
110.2
26.5
10.2
PM
2.5
-
65
(d)
15
(d)
not estimated
1.1
0.2
PM
10
-
150
(d)
50
(d)
not estimated
1.8
0.3
TSP
-
120-400
(c)
60-70
(c)
not estimated
1.8
0.4
aluminum
300
(e,h)
120
(f,h)
24
(g,h)
5.8353
1.0788
0.3570
arsenic
0.75
(e)
0.3
(f)
0.06
(g)
0.0015
0.0001
0.0000
barium
25
(e)
10
(f)
2
(g)
0.0029
0.0002
0.0001
beryllium
0.025
(e)
0.01
(f)
0.002
(g)
0.0000
0.0000
0.0000
cadmium
5
(e)
2
(f)
0.4
(g)
0.0049
0.0012
0.0004
chromium
3.75
(e)
1.5
(f)
0.3
(g)
0.0020
0.0003
0.0001
cobalt
0.25
(e)
0.1
(f)
0.02
(g)
0.1103
0.0197
0.0064
copper
125
(e)
50
(f)
10
(g)
0.0028
0.0004
0.0001
lead
1.75
(e)
0.7
(f,g)
0.14
(g)
0.0025
0.0003
0.0001
manganese
6.25
(e)
2.5
(f)
0.5
(g)
0.6097
0.1124
0.0371
mercury
5
(e)
2
(f)
0.4
(g)
0.0001
0.0000
0.0000
molybdenum
300
(e)
120
(f)
24
(g)
0.0009
0.0001
0.0000
nickel
5
(e)
2
(f)
0.4
(g)
1.1642
0.2053
0.0659
selenium
25
(e)
10
(f)
2
(g)
0.0008
0.0001
0.0000
vanadium
5
(e)
2
(f)
0.4
(g)
0.0364
0.0030
0.0008
zinc
300
(e)
120
(f)
24
(g)
0.0385
0.0041
0.0008
(a)
WHO (2000).
(b)
Averaging time: 10 minutes.
(c)
Canadian Council of Ministers of the Environment (CCME) (2002).
(d)
USEPA (
accessed in October 2005).
(e)
OME (2001). Calculated from 24 hours guidelines using Averaging Time Conversion Factors (OME
2004).
(f)
OME (2001).
(g)
0.7 - 30 Days +; otherwise 2.
(h)
Guideline for aluminum oxide.
(i)
Values predicted for the Ambony Sakalava community located 8.8 Km north of the mine site.
TSP = Total suspended solids.
Produce Ingestion Risk Results
Incremental levels of chemicals in below-ground vegetables (i.e., roots such as
manioc) were estimated based on soil concentration and soil to root
bioconcentration factors. Levels of chemicals in above-ground vegetables
(e.g., rice) were calculated using both air deposition rates and soil to root uptake
of chemicals.
