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Sem Materials LP, Spokane

SITE DESCRIPTION

SemMaterials is the current operator of the leased facility formerly known as Koch Materials.  The facility receives and stores petroleum products used in the manufacture of asphalt and sealants.  The site has reportedly been used for petroleum-related operations since 1910.  The site lies over the Spokane Valley-Rathdrum Prairie Aquifer, a sole source aquifer, supplying water to more than 500,000 residents.

An investigation is beginning at the site to determine where and how much petroleum contamination may be in soil and groundwater.

Ecology invites you to review site documents, attend a public meeting, and provide comment.  See details below.

SITE DOCUMENTS

• Fact Sheet
• Draft Agreed Order
• Exhibit A:  Site Map
• Exhibit B:  Scope of Work
• Exhibit C:  Public Participation Plan

Related Information

• Public Meeting March 11, 2008  -- for details see the fact sheet.
• Watershed Information for WRIA 57

Additional Resources

• Acronyms used by the Toxic Cleanup Program
• Cleanup Process: Major Steps & Definitions
• Data Submittal Requirements for All Cleanup Sites
• Facility/Site Atlas
• Toxics Cleanup publications