Minimum depth to ground water, CM2 or CP2 NASM
 49. (1) No person shall apply non-agricultural source materials that are CM2 or CP2 to land unless there is at least 30 centimetres of unsaturated soil at the surface of the land at the time of application. O. Reg. 338/09, s. 43. (2) No person shall apply non-agricultural source materials that are CM2 or CP2 to land where there is at least 30 centimetres but not more than 90 centimetres of unsaturated soil at the surface of the land, except in accordance with the standards set out in the following Table: table    Application standards for cm2 or cp2 NASM based on risk of ground water contamination  Item   Column 1   Level of risk of ground water contamination   Column 2   Standard for surface application of liquid NASM   Column 3   Standard for injection of liquid NASM   Column 4   Standard for surface application of solid NASM 

  1.   High   No surface application is permitted.   No injection is permitted.   Surface application is permitted if both of the following conditions are satisfied: 1. The land is pre-tilled no more than 7 days before the application. 2. The maximum rate of application is 18 dry tonnes per hectare per 48 hours. 

  2.   Moderate   Surface application is permitted if both of the following conditions are satisfied: 1. The land is pre-tilled no more than 7 days before the application. 2. The maximum rate of application is 40 cubic metres per hectare per 48 hours.   No injection is permitted.   Surface application is permitted if one of the following conditions is satisfied: 1. The land is pre-tilled no more than 7 days before the application. 2. The maximum rate of application is 18 dry tonnes per hectare per 48 hours. 

  3.   Low   Surface application is permitted if one of the following conditions is satisfied: 1. The land is pre-tilled no more than 7 days before application. 2. The maximum rate of application is 40 cubic metres per hectare per 48 hours.   No injection is permitted.   Surface application is permitted if the maximum rate of application is 27 dry tonnes per hectare per 48 hours. 

  4.   Very low, if land is tile drained   Surface application is permitted if one of the following conditions is satisfied: 1. The land is pre-tilled no more than 7 days before application. 2. The maximum rate of application is 40 cubic metres per hectare per 48 hours.   Injection is permitted if the maximum rate of application is 40 cubic metres per hectare per 48 hours.   No restriction. 

  5.   Very low, if land is not tile drained    No restriction.   No restriction.   No restriction. O. Reg. 338/09, s. 43. (3) For the purposes of Column 1 of the Table to subsection (2), the level of risk of ground water contamination shall be established, immediately before the proposed application, in accordance with the following Table: table   risk of ground water contamination  Item   Column 1   Hydrologic soil group   Level of risk of ground water contamination 

  Column 2   Depth of unsaturated soil at least 30 cm but not more than 60 cm   Column 3   Depth of unsaturated soil more than 60 but not more than 90 cm 

  1.   A    High   Moderate 

  2.   B   Moderate   Low 

  3.   C   Low   Very low 

  4.   D   Low   Very low O. Reg. 338/09, s. 43. (4) This section does not restrict the application of non-agricultural source materials that are CM2 or CP2 to land where there is more than 90 centimetres of unsaturated soil at the surface of the land. O. Reg. 338/09, s. 43.