20. Subject to a specific method prescribed by sections 21 to 23, the characterization of residual granular materials must be performed before they are reclaimed by taking at least 1 sample for every 10,000 m3 or less of each type of residual granular material generated in order to analyze
(1) the inorganic parameters indicated in Table 1 of Schedule I;
(2) where the residual granular materials are likely to contain organic contaminants, other than asphalt, due to factors such as the utilization of coatings or resin, the occurrence of spills or the carrying out of industrial activities,
(a) the level of petroleum hydrocarbons (C10-C50); and
(b) the organic compounds indicated in Table 2 of Schedule I.