This calculator estimates groundwater salt concentrations from soil samples processed using the saturated paste method (McKeague, 1978; Carter & Gregorich, 2008). Analyte concentrations should be given relative to extract volume (mg/l) rather than soil weight (mg/kg). Groundwater concentrations are calculated according to the formulas provided in Banks & Banks (2019).
Conversions using in-situ hydraulic conductivity (meters/second) are prioritized (if available), followed by soil types classified according to the Canadian and Unified Soil Classification Systems (Soil Classification Working Group, 1998; ASTM Committee D-18, 2011). If neither are available, default conversions are used.