Equations for Soil Ingestion Exposure Route

Remediation Objectives for Noncarcinogenic Contaminants (mg/kg)

S1

Remediation Objectives for Carcinogenic Contaminants − Residential (mg/kg)

S2

Remediation Objectives for Carcinogenic Contaminants − Industrial/Commercial, Construction Worker (mg/kg)

S3

Equations for Inhalation Exposure Route (Organic Contaminants and Mercury

Remediation Objectives for Noncarcinogenic Contaminants − Residential, Industrial/Commercial (mg/kg)

S4

Remediation Objectives for Noncarcinogenic Contaminants − Construction Worker (mg/kg)

S5

Remediation Objectives for Carcinogenic Contaminants − Residential, Industrial/ Commercial (mg/kg)

S6

Remediation Objectives for Carcinogenic Contaminants − Construction Worker (mg/kg)

S7

Equation for Derivation of the Volatilization Factor − Residential, Industrial/ Commercial, VF (m³/kg)

S8

Equation for Derivation of the Volatilization Factor − Construction Worker, VF' (m³/kg)

VF' =

S9

Equation for Derivation of Apparent Diffusivity, D_A (cm²/s)

S10

Equations for Inhalation Exposure Route (Fugitive Dusts)

Remediation Objectives for Noncarcinogenic Contaminants − Residential, Industrial/Commercial (mg/kg)

S11

Remediation Objectives for Noncarcinogenic Contaminants − Construction Worker (mg/kg)

S12

Remediation Objectives for Carcinogenic Contaminants − Residential, Industrial/ Commercial (mg/kg)

S13

Remediation Objectives for Carcinogenic Contaminants − Construction Worker (mg/kg)

S14

Equation for Derivation of Particulate Emission Factor, PEF (m³/kg)

S15

Equation for Derivation of Particulate Emission Factor, PEF' − Construction Worker (m³/kg)

NOTE: PEF must be the industrial/commercial value

S16

Equations for the Soil Component of the Groundwater Ingestion Exposure Route

Remediation Objective

(mg/kg)

NOTE:  This equation can only be used to model contaminant migration not in the water bearing unit.

S17

Target Soil Leachate Concentration, C_w (mg/L)

C_w = DF • GW_obj

S18

Soil-Water Partition Coefficient, K_d (cm³/g)

K_d = K_oc • f_oc

S19

Water-Filled Soil Porosity,

θ_w (L_water/L_soil)

S20

Air-Filled Soil Porosity,

θ_a (L_air/L_soil)

θ_a = η - θ_w

S21

Dilution Factor, DF (unitless)

S22

Groundwater Remediation Objection for Carcinogenic Contaminants, GW_obj (mg/L)

S23

Total Soil Porosity, η (L_pore/L_soil)

S24

Equation for Estimation of Mixing Zone Depth, d (m)

S25

Mass-Limit Equations for Inhalation Exposure Route and Soil Component of the Groundwater Ingestion Exposure Route

Mass-Limit Volatilization Factor for the Inhalation Exposure Route − Residential, Industrial/Commercial VF (m3/kg)

NOTE: This equation may be used when vertical thickness of contamination is known or can be estimated reliably.

S26

Mass-Limit Volatilization Factor for the Inhalation Exposure Route − Construction Worker, VT' − (m3/kg)

S27

Mass-Limit Remediation Objective for Soil Component of the Groundwater Ingestion Exposure Route (mg/kg)

NOTE:  This equation may be used when vertical thickness is known or can be estimated reliably.

S28

Equation for Derivation of the Soil Saturation Limit, C_sat

S29

Equation for the soil gas component of the Outdoor Inhalation Exposure Route

S30