29. The parameters to be measured and substances to be analysed in groundwater, leachates and surface water pursuant to sections 25 and 30 are those identified in Schedule II except for the establishments and extensions on the land of a site used exclusively for the final deposit of contaminated soils extracted from that land in connection with rehabilitation work authorized under the Act, in which case the parameters to be measured and the substances to be analysed are those established at the outset on the basis of the contaminants likely to be present in the soils.