Extensive cleanup indicated for Everett casino site

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Ash, arsenic, and lead are among the remnants of toxins tainting the land where Las Vegas developer Steve Wynn proposes to build a glamorous $1.2 billion resort casino in Everett, according to an environmental consultant hired by the Wynn group.

Monsanto Chemical Co. operated a chemical processing plant on the land for decades until closing it in 1992.

“The site is quite contaminated,” said Chris Gordon, the project manager for Wynn, at a meeting with state environmental officials Wednesday in Everett that included a tour of the site. “It’s predictable for this type of site . . . We want to make sure the site is cleaned to a very high standard.”

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