Tacoma Asarco Smelter Plume Ecology Presentation February 2002

air emissions from the old Asarco smelter. risk associated with low-level area-wide contamination. about project status contamination over time. 2 Area Wide Contamination Strategy WASHINGTON STATE DEPARTMENT OF ECOLOGY as the Area-wide Contamination Strategy. • Other area-wide sites Everett Smelter Site Mining Lands purposes Area Wide Contamination Strategy WASHINGTON STAIE DEPARTMENT OF ECOLOGY Health, and Office of Community Development Nature and extent of contamination Protective measures land use policies Sampling Guidance Histo W WASHINGTON STATE DEPARTMENT OF ECOLOGY Asarco) 1992 - EPA Superfund Cleanup of Ruston site begins 1998 - Maury Island Gravel Pit Study Department What is a Site Hazard Assessment ? WASHINGTON STATE DEPARTMENT OF ECOLOGY where hazardous substances are known or the environment through the environment The Plume WASHI'N GT ON STATE DEPARTMENT OF ECOLOGY Arsenic is prirnaW contarninant Lead is of lesser concern or E Coli outbreak Closer to smelter is more contaminated Contamination follows wind paUerns The Plume W'A SHING TON STATE DEPARTMENT OF ECOLOGY Undisturbed soils most contaminated Topography aKects contamination (slopes/floodplains) Boundaw of contamination is not known tJ MTCA Cleanul Levels WASHINGTON STATE DEPARTMENT OF ECOLOGY Arsenic 20 parts per million Lead 250 parts per million & What levels of Arsenic have been found in the TSP area? WASHINGTON STATE DEPARTMENT OF ECOLOGY AveraGes – 170 ppm Maximum 281 ppm 460 ppm VI VI IJb V dIV}/uJ I I VI/bl LI VMI-Phase 1 Study &MI-Child Use Areas UP Residential King Co. Mainland e • Everett ppm (South Vashon) - 50 ppm ppm Due…

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Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]