Table 3.

Plume model, estimated 2-BE AM concentrations for near and mid field.

		Distance from source
		Near field				Mid field
	Meters	0.303	0.767	1.521	3.00	5.91	8.82	15.60
	Feet	0.99	2.52	4.99	9.84	19.40	28.90	51.20
Wind speeda	Surface areab	2-BE AM concentration (ppb)
Low	Small	469	85.0	24.1	6.91	0.88	0.42	0.15
Medium	Small	128	23.2	6.58	1.89	0.23	0.11	0.04
High	Small	68.6	12.4	3.53	1.01	0.13	0.06	0.02
Low	Medium	1440	261	74.1	21.2	2.62	1.27	0.45
Medium	Medium	427	77.3	21.9	6.28	0.79	0.38	0.14
High	Medium	226	40.9	11.6	3.32	0.42	0.20	0.07
Low	Large	4260	771	219	62.7	7.62	3.69	1.31
Medium	Large	1280	232	65.7	18.8	2.34	1.13	0.40
High	Large	671	121	34.5	9.88	1.24	0.60	0.21
Low	Very large	20 300	3670	1040	299	37.2	18.0	6.42
Medium	Very large	5740	1040	295	84.6	10.5	5.08	1.81
High	Very large	3070	555	158	45.2	5.60	2.71	0.97

For abbreviations, see Table 2.

^a Low wind ranged from 3.75 to 26.8 m min⁻¹, medium wind speed varied from 80.5 to 134.1 m min⁻¹, and high wind ranged from 268.2 to 536.5 m min⁻¹. For any wind speed value, the same value was used for the advective wind speed.

^b Small surface areas ranged from 25.8 to 232.3 cm², medium surface areas ranged from 412.9 to 929.0 cm², large surface areas ranged from 2090.3 to 3716.1 cm², and very large surface areas ranged from 8361 to 33 445 cm².