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Heglar Kronquist 

SITE DESCRIPTION

The site is located 10 miles northeast of downtown Spokane in a rural area near the intersection of Heglar and Kronquist Roads in Mead, Spokane County, Washington.  Ecology proposes to enter into an Agreed Order with Kaiser Aluminum & Chemical Corporation, LLC.  The Agreed Order requires Kaiser to conduct a Remedial Investigation and Feasibility Study at the Heglar Kronquist site. It also formalizes the agreement between Ecology and Kaiser to assess the contamination and the need for additional cleanup actions at the site.  The purpose of the Remedial Investigation is to gather more information to determine the nature and extent of site-related contamination that may be in soil and groundwater.  The Feasibility Study will evaluate cleanup options.
 
The nearly four-acre site was used as a gravel pit until it was closed in 1969. Kaiser disposed of aluminum black dross from its Trentwood plant at the Heglar site.  Black dross is a by-product from processing aluminum materials.  The dross disposal was stopped in 1974 because high levels of chloride were found in shallow water supply wells and springs down gradient of the site.  Air sampling conducted downwind of the site in 1979 showed elevated levels of several organic compounds.  Ammonia also was detected at levels higher than accepted by state laws.
 
Past site data show that chemicals of concern related to the aluminum dross include:  sodium, potassium, aluminum, chloride, fluoride, ammonia, nitrates and nitrites.  The Remedial Investigation will provide additional information to identify the extent and concentration of contaminants at the site.
 
On December 10 and 11, 2008, Ecology and Kaiser sampled 16 residential wells near the Heglar Kronquist site.  Preliminary results of this sampling was presented at the public meeting on February 17, 2009.  A representative from the local regional health district was also at the meeting to answer health-related questions. 
 
For details see the fact sheet and document links below.

Site Documents

March 31, 2009

• Responsiveness Summary for the Agreed Order for a Remedial Investigation/Feasibility Study
• Letter 1
• Letter 2
• Letter 3
• Letter 4
• Letter 5
• Letter 6
• Letter 7
• Letter 8
• Letter 9

• Fact Sheet
• Heglar Kronquist Domestic Well GW Report
• Detailed Report for Wells 1-16
• Public Meeting Presentation February 17, 2009
• Agreed Order-Final Draft
• Exhibit A - Vicinity Map
• Exhibit B - Scope of Work
• Exhibit C - Public Participation Plan

Related Information

• Interim Remedial Action Plan Ramco... See Page 9 for Heglar Kronquist (October 2006)
• Watershed Information for WRIA 55

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