Northwest Pipe and Casing Company-Hall Process Company

Site Summary

Northwest Pipe and Casing in Clackamas, Oregon was the location of pipe manufacturing and coating operations from 1956 to 1985. Waste from the facility contaminated the soil and groundwater with solvents, primers, coal tar, coal-tar residues, polychlorinated biphenyls (PCBs), and oils.

The site was added to EPA’s National Priorities List 1992. The following year, the buildings were demolished and a fence was constructed to keep people away from the site. In 1998, two underground fuel tanks were decommissioned and removed from the site. In 1999, security patrols were started to keep trespassers off the site. Following a comprehensive study, EPA issued a groundwater cleanup plan in 2001 and a soil cleanup plan in 2000.

In 2006, five-year review of the site found that human health and the environment were currently protected, but EPA needs to modify the cleanup plan to make sure that the remedy for groundwater contamination continues to protect people and wildlife in the future.

Decision Documents

Explanation of Significant Differences for the Groundwater (OU 2) Record of Decision (PDF) (8 pp. 351K) - December 2008
Remedial Site Evaluation Report (PDF) - September 2007 (42pp, 1MB)
NWPC Five-Year Review (PDF, 111pp. 4MB to start) - signed September 22, 2006
Explanation of Significant Differences (PDF) (14pp, 113 KB)- March 23, 2004
Groundwater (OU 2) Record of Decision (ROD) (PDF) (158pp, 2.5 MB) - September 27, 2001
Proposed Plan for Groundwater Treatment - Public Comment Period May 18 through June 18, 2000
Groundwater Administrative Record (NWGAR)
Remedial Administrative Record Index
Removal Administrative Record Index
Soils Record of Decision (ROD) (PDF) (150pp, 358 KB) - June 2000 figures available for viewing in the Superfund Record Center, NW Pipe and Casing Repositories or by FOIA request.
Soils Proposed Plan (PDF) - Public Comment Period (16pp, 95 KB) January 31 through February 29, 2000

Fact Sheets

	Site Information
	Cleanup Activity Milestones (CERCLIS) Environmental Enforcement Action Report (FRS) Photo Gallery Site Summary Information Repository Clackamas Corner Branch Library (Administrative Record) 11750 SE 82nd Avenue, Suite D Clackamas, Oregon 97015 Contact Mark Ader ader.mark@epa.gov 206-553-1849

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

You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.

Cleanup Allows Development of Northwest Pipe and Casing Site (PDF) - October 2005 (2pp, 107 KB)
Cleanup Construction Complete (PDF) - November 2004 (4 pp, 146 KB)
Final Phase of site Cleanup begins in June (PDF) - June 2003 (4pp, 178K)
EPA Chooses Final Cleanup Plan for Groundwater (PDF) - December 2001 (4 pp, 186 KB)
Phase I of the Soil Cleanup will be Complete in November (PDF) - October 2001 (4 pp, 174 KB)
Soil Cleanup to Begin in August (PDF) - August 2001 (2pp, 436KB)
Comment on Groundwater Cleanup until June 18 (PDF) - May 2001 (4pp, 453K)
Soil Cleanup Plan Summarized (PDF) - May 2001 (6pp, 521K)
Cleanup Plan Signed Fact Sheet (PDF) - July 2000 (4pp, 36KB)
Fact Sheet Update (PDF) - April 1999

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Point of contact: Mark Ader
E-Mail: ader.mark@epa.gov
Phone Number: (206) 553-1849
Last Updated: 01/30/2009