TRRP Protective Concentration Levels
WebTPH Spreadsheets. Use these spreadsheets to assist in the calculation of TPH PCLs. The groundwater TPH calculator spreadsheet was updated in December 2016. The soil TPH calculator was update in February 2020. Soil TPH Calculator; Groundwater TPH Calculator; Tier 2 PCL Equations. A person has the option of using Tier 2 PCLs. These PCLs are .