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Schwerin Concaves, Inc. 

SITE DESCRIPTION

The Schwerin Concaves property was part of a wheat farming operation and then became a hard chromium electroplating business.  Combine equipment, used in farming, contained parts called concaves.  Concaves were used to separate the wheat from the chaff.  These parts were brought to the electroplating facility and covered with chrome in a process called plating.  The plating preserves the equipment from wear and tear. 
 
Contamination at the site is a result of the chromium electroplating operations on the property.  Hexavalent chromium is present in the soil and groundwater.  There are also elevated levels of arsenic, cadmium, iron, lead, zinc, nitrate and sulfate in groundwater.  
 
Groundwater in the area is used for irrigation, drinking water and recreation.  Sampling of wells within a one-mile radius of the site confirmed these wells meet state standards for drinking water.  Dry Creek has not been impacted by the on-site operations.
 
A Feasibility Study was conducted at the site to identify and evaluate cleanup alternatives for the contamination found in soil and groundwater.  The fact sheet below provides a summary of the site and study results.  A link is also found for the draft Focused Feasibility Study report.

SITE DOCUMENTS

• August 2008
• Fact Sheet
• English
• Español
• Focused Feasibility Study
  • Table of Contents
  • Introduction (Part 1 of 2)
  • Introduction (Part 2 of 2)
  • Conceptual Site Model
  • Feasibility Study Objectives - Evaluation
  • Extent of Contamination
  • Remediation Technologies
  • Detailed Analysis of Remedy Alternatives
  • Comparative Evaluation
  • References
  • Tables
  • Table 1
  • Table 2
  • Table 3
  • Table 4
  • Table 5
  • Table 6
  • Table 7
  • Table 8
  • Table 9
  • Figures
  • Figure 1
  • Figure 2
  • Figure 3
  • Figure 4
  • Figure 5
  • Figure 6
  • Figure 7
  • Figure 8
  • Figure 9
  • Figure 10
  • Figure 11
• December 22, 2005
• Fact Sheet
• English
• Español
• Remedial Investigation Report
  • Cover Page
  • Table of Contents
  • Report
  • Figure 1 - Map
  • Data Tables
  • Schwerin Map
  • Self-Propelled Excavation
  • Appendix A
    • Boring Logs
    • Monitoring Well (MW) la
    • MW lb
    • MW 2a
    • MW 2b
    • MW 3a
    • MW 3b
    • MW 4a
    • MW 4b
    • MW 5a-MW 9b
    • TB 1
    • TB 2
    • TB 3
    • TB 4
    • TB 5
    • TB 6
    • TB 7
    • TB 8
    • TB 9a
    • TB 9b
    • Graph 1
    • Graph 2
    • Graph 3
  • Appendix B
    • Groundwater Elevation Contour Maps
    • Map Mar 05
    • Map Nov 04
    • Map Apr 04
    • Map Aug 03
    • Map Apr 03
  • Appendix C
    • Seismic Survey Report
    • Letter Report
    • Tables 1-5
    • Figure 1
    • Figure 2
    • Figure 3
    • Figure 4
    • Figure 5
    • Figure 6
    • Figure 7
• Appendix D Lab Data and Data Validation
• Fact Sheet - October 30, 2002
• English
• Español
  
   

Related Information

• Watershed Information for WRIA 45

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