Frontier Hard Chrome, Inc.


	Region 10 Superfund: Frontier Hard Chrome, Inc.

Serving the people of Alaska, Idaho, Oregon, Washington and 270 Native Tribes

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Frontier Hard Chrome, Inc.

Photo showing a drill using an auger bit to treat a hot spot on the site.

Site Summary

The Frontier Hard Chrome groundwater and soil hotspot was cleaned up via in-situ reduction in the summer of 2003. Since 2004, hexavalent chromium concentrations in groundwater have met federal drinking water quality standards. Groundwater monitoring is now occurring under the direction of the Washington State Department of Ecology. The site will continue to be monitored for the foreseeable future to prevent chemical rebound reactions which might result in hexavalent chromium concentrations increasing above cleanup standards. The site continues to be monitored to ensure long-term effectiveness of the remedy.

Technical Documents (Top)

Five Year Review
First Five Year Review (PDF) (57 pp. 5MB) - January 29, 2008
Post Remedial Action
Event 13 Long Term Monitoring Report (PDF) (76 pp. 1.5MB) - February 2008
Event 12 Long Term Monitoring Report (PDF) (77 pp. 2.2MB) - November 2007
Event 11 Long Term Monitoring Report (PDF) - August 2007 (75 pp. 2.3MB)
Event 10 Long Term Monitoring Report (PDF) - May 2007 (128 pp. 3MB)
Event 9 Long Term Monitoring Report (PDF) - December 2006 (72 pp. 2.2MB)
Event 8 Long Term Monitoring Report - September 2006 (PDF, 73pp. 2.3MB)
Event 7 Long Term Monitoring Report - June 2006 (PDF, 72pp. 2.31MB)
Event 6 Long Term Monitoring Report - May 2006 (70 pp, 2 MB pdf)
Event 5 Long Term Monitoring Report - February 2006 (70 pp, 5 MB pdf)
Event 4 Long Term Monitoring Report - May 2005 (70 pp, 13.3 MB pdf)
Event 3 Long-Term Monitoring Report - August 2004 (13 page 302 KB .pdf to start)
Event 2 Long-Term Monitoring Report - June 2004 (71 page 7.8 MB .pdf file)
Event 1 Long-Term Monitoring Report - May 2004 (74 page 13.6 MB .pdf file)
Long-term Monitoring Plan - February 2004 (48 page 5.7MB.pdf file)
Operation and Maintenance / Institutional Control Plan (58 page 648 KB .pdf file)
Map of Active Monitoring Wells - January 2005 (1 page 383 KB .pdf file)
EPA Operation and Maintenance (O&M) Guidance
Roadmap to Long-Term Monitoring Optimization Guidance - May 2005 (48 pp, 700 KB pdf file)
EPA Site Closeout Guidance

	Site Information
	Background Technical Documents Fact Sheets and News Facility Information - FII data via EnviroFacts includes other possible EPA involvement. Photos Site Summary Site List - CERCLIS data via EnviroFacts includes General Site, Alias, Operable Unit, Action, Financial, and Enforcement information. Contact Information Site Manager: Guy Barrett, Ecology 360-407-7115 EPA Project Manager: Claire Hong, EPA 206-553-1813 Repository Location Vancouver Community Library 1007 East Mill Plain Boulevard Vancouver, WA 98663-3504

	National Superfund Information
	EnviroMapper National Superfund Website Site Information Where You Live

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Remedial Action
Directive on Paying for Remedy Repairs or Modifications during the State-funded Period of Operation and Maintenance (O&M) (PDF) (4 pp. 255K) - April 26, 2007
Remedial Action Data Evaluation Report - February 9, 2004 (39 page 687 KB .pdf file)
Figures (16 pages 8.8 MB .pdf file)
Appendices (339 page 14.4 MB .pdf file)
In Situ Redox Manipulation Permeable Reactive Barrier Emplacement: Final Report - January 2004 (107page 7.8 MB.pdf file)
Appendix A Geologic Logs and Well Installation Reports (53 page 1.3 MB.pdf file)
Appendix B Electromagnetic Borehole Flowmeter (EBF) Testing (39 page 1.2 MB.pdf file)
Appendix C Geostatistical Analysis (20 page 2.3 MB.pdf file)
Appendix D Reactive Transport Modeling in Support of Barrier Design Analysis (37 page 522 KB.pdf file)
Appendix E Dithionite Injection Breakthrough Curves (26 page 233 KB.pdf file)
Appendix F Pressure Response in Injection and Operating Monitoring Wells During Emplacement (5 page 186 KB.pdf file)