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Human and Ecological Risk Assessment - Earthjustice

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Appendix EAttachment E-1: Surface Water ConcentrationsTable E-1-7. Diffusion Transfer Rate (m/day) (Mercury Only)K vTempadjust = θ( − )wwaterTThlcKv=×+1TempAdjust11× H ′ KgLH ′ =HLC× wTRName Description ValueHLC Henry's Law constant (atm-m^3/mole Chemical Data; See Section 3, Table 3-4H’ Dimensionless Henry's Law constant (unitless)CalculatedK gK LGas-Phase Transfer Coefficient (m/d)Liquid-Phase Transfer Coefficient (m/d)CalculatedCalculatedR Ideal Gas Constant (atm-m^3/K-mole)0.00008205θ water Temperature correction (unitless)1.026T hlc Temperature of HLC (K)298T wTemperature of the waterbody (K)Site Data; See Appendix CNote: Drawn from U.S. EPA, 1998 (EPA-530-D-98-001A <strong>and</strong> EPA-600/R-98/137).April 2010–Draft EPA document.E-1-9

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