What is the acceptable risk level for Point Ruston as far as EPA, the State, and Pierce County are concerned?
The cleanup for Point Ruston is required to meet the same exposure levels that EPA has set for the Ruston and North Tacoma Yards. EPA’s yard cleanup consists of two components – soil removal and measures to avoid exposure. Soil with arsenic concentrations over 230 ppm arsenic or 500 ppm lead is removed and replaced with clean soil. For yards with arsenic concentrations between 20 ppm and 230 ppm arsenic, homeowners are provided with information on measures to avoid exposure to contaminants. These measures are design to prevent ingestion of soil and include wetting soil before digging, hand and face washing after playing or working in soil, and vacuuming carpets and rugs. After the development of Point Ruston is complete, the risk level from exposure to site contaminants for adults, children and pets will be zero. The entire site will be capped to prevent any exposure. The integrity of the cap will be protected and maintained by Point Ruston and the future Condo Association. EPA does no
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