SEATTLE (AP) — Kayakers surveying Washington state’s most remote beaches for debris from last year’s Japanese tsunami say they believe they have found part of a house.

The three kayakers with the Ikkatsu Project say they were working their way up a beach south of Cape Flattery when they found lumber, some of it stamped with a serial number they traced to a mill in Osaka.

They also found parts of a laundry hamper, washing machine and a pink child’s toilet bowl.

The arrival of debris from the March 2011 tsunami, including a dock that washed up in Oregon, has worried officials on the West Coast. They say it will be expensive to clean and could carry invasive species.

They’ve asked for federal help.

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