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Weapons of Mass Destruction (WMD)

Table 4-58. Maximum SRS boundary-line concentrations resulting from a year of average construction activities under alternative B (in micrograms per cubic meter of air).


Averaging

Baseline

Average increase (µg/m3)b
SCDHEC standard

Baseline + increase as percent of standard
Pollutant
time
(µg/m3)a
Expected MinimumMaximum
(µg/m3)c
Expected
Minimum
Maximum
Nitrogen oxides1 year 14<0.01d<0.01 0.0310014 1414
Sulfur dioxide3 hours
24 hours
1 year 		857
213
19		28.53
0.54
<0.01 		14.89
0.28
<0.01		334
6.33
<0.01 		1,300
365
80		68
59
21 		67
58
21		92
60
21
Carbon monoxide1 hour
8 hours 		171
22		673
106		 323
51		6,645
1,010		 40,000
10,000		2
1 		1
1		17
10
Total suspended particulates 1 year 43<0.01<0.01 0.037557 5757
Particulate matter less than 10 microns in diameter 24 hours
1 year		85
25 		1.99
0.01		1.03
0.01 		22.54
0.04		150
50 		58
50		57
50 		72
50

a. Source: Stewart (1994).

b. Source: Hess (1994a).

c. Source: SCDHEC (1976).

d. < is read as "less than."

Table 4-59. Changes in maximum ground-level concentrations of air pollutants at SRS boundary for alternative B - expected, minimum, and maximum waste forecasts.


Averaging
Existing sources
Regulatory standards
Background concentration
Increases in concentration (µg/m3)

Percent of standarde
Pollutant
time
(µg/m3)a,b
(µg/m3)c
(µg/m3)d
ExpectedMinimum Maximum ExpectedMinimum Maximum
Nitrogen oxides1 year 6100 80.79 0.790.83 15 1515
Sulfur oxides3 hours
24 hours
1 year 		823
196
14		 1,300
365
80		34
17
3 		3.82
0.81
0.05 		3.81
0.81
0.05 		3.85
0.81
0.05 		66
59
21 		66
59
21		 66
59
21
Carbon monoxide1 hour
8 hours 		171
22		40,000
10,000 		NAf
NA		31.45
7.68 		31.46
7.68		31.46
7.68 		0.5
0.3 		0.5
0.3		0.5
0.3
Total suspended particulates 1 year13 7530 2.012.01 2.01 6060 60
Particulate matter less than 10 microns in diameter 24 hours
1 year		 51
3		150
50 		34
22		4.61
0.10 		4.61
0.10		4.61
0.10 		60
50 		60
50		60
50
Lead3 months
4.0x10-4
1.50.011 3.00E-053.00E-05 5.00E-05 0.80.8 0.8
Gaseous fluorides
(as hydrogen fluoride) 		12 hours
24 hours
1 week
1 month 		2
1
0.4
0.1 		3.7
2.9
1.60
0.80 		NA
NA

NA 		0.00187
9.30x10-4
7.00x10-5
9.00x10-5 		0.00187
9.30x10-4
7.00x10-5
9.00x10-5 		0.00187
9.30x10-4
7.00x10-5
9.00x10-5 		54
35
25
13 		54
35
25
13 		54
35
25
13

a. Micrograms per cubic meter of air.

b. Source: Stewart (1994).

c. Source: SCDHEC (1976).

d. Source: SCDHEC (1992).

e. Percent of standard = 100 x (actual + background + increment) divided by regulatory standard.

f. NA = not applicable.



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