L. Lowenstein

Following the dismissal of an environmental class action on appeal, the successful defendant sought costs for the period from certification to the trial decision, payable from the Class Proceedings Fund administered by the Law Foundation of Ontario.

The court held that the defendant was prima facie entitled to costs on a partial indemnity basis under the general rule that costs follow the event.

However, under s.31(1) of the Class Proceedings Act, the court considered that the proceeding raised novel legal issues concerning environmental mass torts and class proceedings and involved significant public interest, including access to justice and environmental concerns.

Balancing these factors with the defendant’s entitlement to compensation for substantial litigation expenses, the court reduced the costs award.

The defendant was awarded 50% of the otherwise assessed costs, payable from the Fund.

In a class proceeding costs dispute following the dismissal of environmental contamination claims, the defendant brought a motion to strike portions of affidavits filed by a third-party fund administrator opposing payment of costs from the Class Proceedings Fund.

The challenged affidavits contained opinion evidence from non‑expert witnesses asserting that the litigation raised issues of public interest.

The court applied the principles governing admissibility of lay opinion evidence from R. v. Graat, distinguishing between admissible opinion grounded in factual observations and inadmissible speculation or legal opinion.

While the court permitted most of the opinion evidence as permissible lay opinion supporting observations about the public interest and access to justice, it struck limited portions that lacked factual foundation or amounted to speculation.