Key legal question
Whether the subsidiary constitutional appeal was admissible despite the appellant's failure to challenge one of the cantonal court's independent grounds
Extracted holding
The appeal was inadmissible because the appellant only attacked the denial of standing and did not address the alternative merits-based ground.
Extracted reasoning
Where a decision rests on two independent and sufficient reasons, the appellant must show that each violates the law; otherwise the decision stands if one ground remains unchallenged.