Document 91KXXBMR7z74azD5J1NYQbdYD

I AR226-2215 EID294840 il Vapor Scavenging Coeffioent Liquid Precipitation Frozen Precipitation C8 Particle Density 2.2 o/cm8 3 .0 -s .o 1.0 *3.0 0.5* 1.0 0.3 - 0.5 0.1 -0.3 f 1 |Lpif ill 13b ilia ifir li _ ' a te is based on testing conducted at the Washington Works site in September, 1996. 6 Particulate scavenging coefficients for liquid precipitation are from Figure 1*111nthe EPA ISC Users Guide (Volume II). 6According to Section 1.4 of the EPA ISC Users Guide (Volume II), the scavenging rate coefficients for frozen precipitation are expected to be reduced to about 1/3 of the values In Figure 1*11. 7.0% 12.5% 6.8% 31.5% 42.2% 5.5% 20,0% 0.25% 8.25% 66.0% 0.75% 1.75% 3.5% 25.0% 69.0% o;o% 16.5% 3.5% 42.0% 38.0%