Laserfiche WebLink
TRANSPORT <br /> • -___----^---FATE-AND-coefficientO DEt-FOR-daIt-OUTPUT FItE <br /> Effective Diffusion Coefficient for Foundation <br /> Total thickness of subunit [cm] 15, <br /> Air-filled porosity [-] . . • - - 0.25 <br /> water-filled porosity [-] - - 0 0 <br /> Total porosity [-] . . 0 25 <br /> ff <br /> Effective diff coefar subunit icmA2/s] 1 12E-02 <br /> Contaminant Flux Into Building <br /> soil- }'gas flow rate [cm3/sec] . ---. _ 0 28 <br /> Diffusive (x-sectional) area for flux [m*2] 4 00E+02 <br /> Conc in soil vapor at foundation [g/cm3] . . . . 3 56E-08 <br /> Conc. in soil vapor " 11 [mg/m3] 36 <br /> Flux rate into building [g/cmA2/s] . 2 7BE-14 <br /> Flux rate go 11 [mg/MA2/d] 2 40E-02 <br /> Attenuation coefficient [A1 52E-05 <br /> (Indoor Air Conc /Conc In soil vapor at the source) 3 77E-08 <br /> source concentration [g/cm3] . . . . . . <br /> Source 11 [mg/m3] . 38. <br /> Indoor air concentration [g/cm3] . . . 5 72E-13 <br /> Indoor " is [mg/m3] 5 72E-04 <br /> CONCENTRATION IN BUILDING (annual average) <br /> MTBE <br /> Flux into Concentration Soil Gas Conc <br /> Time Building in Building at Building <br /> • '(yr)_ -(mg/mn2/day)- --(mg/m^3?---- ---(mg/m^3?---- <br /> 1.0 2 40E-02 5 72E-04 3 56E+01 <br /> The concentration is constant (steady-state model) <br /> i <br /> Page 5 <br />