impermeable surface means a surface or pavement constructed and maintained to a standard sufficient to prevent the transmission of liquids beyond the pavement surface, and should be read in conjunction with the term “sealed drainage system” (below).
tailings means material rejected from a mill after most of the valuable minerals have been extracted.
Permeable pavement means paving material that absorbs water or allows water to infiltrate through the paving material. Permeable pavement materials include porous concrete, permeable interlocking concrete pavers, concrete grid pavers, porous asphalt, and any other material with similar characteristics. Compacted gravel shall not be considered permeable pavement.
Contaminated soil means any soil which has been exposed to an organic or inorganic contaminant in excess of standards prescribed or adopted by the Minister, and that has caused, is causing, or may cause an adverse effect;
Nitrogen oxides means nitric oxide and nitrogen dioxide, expressed as nitrogen dioxide (NO2);