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You don’t need to test your yard more than once. The ASARCO Smelter was the source of the arsenic and lead contamination and it closed in 1986. There is no longer an active source of arsenic and lead.

Under certain circumstances like the development of an empty lot, we will retest. If you have questions about your property, contact us at (253) 649-1853 or dirtalert@tpchd.org.