The following activities, where they would be significant drinking water threats, are designated for the purpose of section 57 of the Clean Water Act. Therefore, these activities are prohibited from becoming established in the future in Lansdowne WHPA-B:

the management of runoff that contains chemicals used in the de-icing of aircraft
the handling and storage of a dense non-aqueous phase liquid (DNAPL)
the handling and storage of pesticides at a facility where it is sold or used for application at other sites, except where it is manufactured or processed, in the specified mass and containing the specified active ingredient(s):

more than 250 kilograms or litres containing MCPA or Mecoprop
more than 2,500 kilograms containing Dicamba, 2,4-D, 1,3 Dichloropropene, MCPA, Metalaxyl, Metolachlor or s-Metolachlor

the storage of agricultural source material
the handling and storage of organic solvents in the volume specified and containing the specified chemical(s):

more than 25 litres containing carbon tetrachloride below or partially below grade
more than 250 litres containing carbon tetrachloride above grade
more than 250 litres containing carbon tetrachloride, chloroform or methylene chloride below or partially below grade
more than 2,500 litres containing carbon tetrachloride, chloroform, methylene chloride at any grade
more than 2,500 litres containing pentachlorophenol

the handling and storage of more than 2,500 kilograms or liters of commercial fertilizer at a facility where it is sold or used for application at other sites, except where it is manufactured or processed
the handling and storage of more than 2,500 liters of liquid fuel above, below or partially below grade, excluding above grade handling and storage at bulk plants and facilities that manufacture or refine fuel
the storage and handling of road salt
below grade snow storage that is more than 0.01 hectare or at or above grade snow storage that is more than 1 hectare.

N/A.