1,  

Is it within the legislative authority of the Legislature of British Columbia to enact certain amendments to the Environmental Management Act, R.S.B.C. 2003, c. 53?

 2,

If the answer is yes, is the legislation  applicable to hazardous substances brought into the province by means of interprovincial undertakings?

 3,

If the answer to both questions is yes, would existing federal legislation render all or part of the amendments inoperative?