Waste Connections expects $160M liability increase from landfill event at Chiquita Canyon

Waste Connections, Inc.

Increase of ~$160M in landfill closure and post-closure liabilities for FY2023 Form 10-K.
Costs: ~$30M in Q3/Q4 2023, $75M in 2024, $40M in 2025.
Attributed to Elevated Temperature Landfill Event (ETLF) at Chiquita Canyon Landfill, Southern California.
Non-recurring, site-specific; additional costs expected substantially realized by end of 2025.

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