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Environmental Cleanup Site Information (ECSI) Database Site Summary Report - Details for Site ID 139, NW Pipe & Casing Co. Parcels A&B - Clackamas

This report shows data entered as of September 19, 2021 at 8:06:02 AM

This report contains site details, organized into the following sections: 1) Site Photos (appears only if the site has photos); 2) General Site Information; 3) Site Characteristics; 4) Substance Contamination Information; 5) Investigative, Remedial and Administrative Actions; and 6) Site Environmental Controls (i.e., institutional or engineering controls; appears only if DEQ has applied one or more such controls to the site).  A key to certain acronyms and terms used in the report appears at the bottom of the page.

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Environmental Cleanup Site Information (ECSI) Database Site Summary Report - Details for Site ID 139, NW Pipe & Casing Co. Parcels A&B - Clackamas

General Site Information

Site ID: 139 Site Name: NW Pipe & Casing Co. Parcels A&B - Clackamas CERCLIS No: 980988307
Address: 9200 SE Lawnfield Rd. Clackamas 97015
  County: Clackamas Region: Northwest
Other location information: East of Hwy 224 from I-205 to SE 98th Ave; north on 98th to Clackamas Road.
Investigation Status: Listed on CRL or Inventory
Brownfield Site: No NPL Site: Yes Orphan Site: Yes Study Area: No
Property: Twnshp/Range/Sect: 2S , 2E , 4 Tax Lots: 1001
  Latitude: 45.4179 deg. Longitude: -122.5672 deg.  Site Size: 53 acres
Other Site Names:
  Hall Process Co.

Site Characteristics

General Site Description:
Site History:
Contamination Information: (1/23/03 DAB/SRP) As determined by the remedial investigation at the property, the major classes of contaminants at the site include polynuclear aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and volatile organic compounds (VOCs). Coal tar used for coating pipes was the main source of PAHs. PCBs most likely originated from cutting oils, hydraulic oils, cooling oils, and/or electrical transformers. Chlorinated solvents - PCE and possibly TCE - were reportedly used during pipe coating and routine maintenance activities. The primary contaminants in soil are the PAHs and PCBs. The primary contaminants in groundwater are the chlorinated volatiles (CVOCs) including PCE, TCE, cis-1,2 dichloroethene (DCE) and vinyl chloride. Four distinct plumes of PCE and its breakdown products have been identified in the shallow aquifer.
Manner and Time of Release: On-site disposal of pipe-coating wastes between 1956 and 1986. Other releases may have occurred due to facility operations, spills, etc. Coal-tar wastes openly burned on-site in the early 1970s. A 1971 fire at the site may be the source of the PCBs (transformer leakage).
Hazardous Substances/Waste Types: PAHs, VOCs, PCBs, TCA, PCE, TCE, DCE, vinyl chloride.
Pathways: The following are the potential receptors identified in risk assessment: off-site transient resident (trespasser), off-site permanent resident (adult and child), on-site construction worker, and on-site maintenance worker. The exposure pathways for those receptors include ingestion, inhalation, and dermal contact with soil, surface water, and groundwater contaminants. The ecological risk assessment population-level analyses were conducted for the following receptors: great blue heron, deer mouse, vagrant shrew, California quail, and red-tailed hawk. Community-level analyses were conducted for terrestrial plants and aquatic benthic invertebrates. An individual level analysis was performed for Nelson's checker-mallow, a federally protected species. Nelson's checker-mallow was not found on-site.
Environmental/Health Threats: PAHs and PCBs in on-site soils were potentially a threat to trespassers and future on-site construction and maintenance workers. That threat has been controlled through installation of a two foot soil cap on the property. The CVOCs in groundwater are potentially a threat to off-site residents.
Status of Investigative or Remedial Action: (11/29/04 DAB/SRP) The site is an EPA fund lead site. The remedial investigation report, including the risk assessment, and the feasibility study have been finalized. The agencies separated the soil and groundwater remedies into two operable units. The Record of Decision for the soil operable unit was issued in June 2000. The Record of Decision for the groundwater operable unit was issued in September 2001. The Soil Operable Unit Phase I (soil removal and treatment) remedial action was completed in November 2001. The Soil Operable Unit Phase 2 (soil cap) was completed in summer 2004. The groundwater remedial action (in-situ air stripping) has been constructed and is in O&M. Additional investigation in the north central part of Parcel B was initiated after additional contamination was found during installation of the groundwater circulation wells (GCW) for the groundwater remedial action. Additional GCWs may have to be installed to address the contamination. (11/25/05) Property sale transactions were completed in September 2005. Clackamas County now owns the Parcel B (the former Hall Process property). Transfer of the soil operable unit was completed in July 2005. EPA is managing the groundwater remedy as a part of the Long Term Remedial Action (LTRA). The first Five Year Review Report was completed in September 2006. (3/09) An EPA Remedial System Evaluation was completed in fall 2007. The groundwater circulating wells system was determined to be ineffective and all the wells have been turned off. Additional site investigation was performed in 2008 to address NAPL found in one well. All site wells were resurveyed in 2008. A site-wide groundwater quality sampling event was completed in November 2008. Preparation of a site conceptual model report and a focused feasibility study is in progress. Groundwater remedy discussion will follow completion of those reports.

(1/11 DAB) A removal action was implemented in the summer of 2009. Soil was removed from the property in the area of MW207 where NAPL was discovered. Groundwater from the excavation was pumped out and treated and amendment to enhance biodegradation was introduced into the excavation. Monitoring is in progress for reductions resulting from the removal action. A revised risk assessment is being prepared and a revised FS will be prepared to propose a modification to the groundwater remedy.

(4/1/14 DAB) Groundwater modeling was performed for the site. An additional area of investigation was identified and investigated on the eastern side of the property. In 2015, a non-time-critical removal action was initiated. Its goal was to remove the mass of contaminated soil near Plant 4, close the GCW systems, and collect a comprehensive round of groundwater samples, including water levels and COCs from all of the current 100 groundwater monitoring wells. Approximately 6,000 cubic yards of contaminated soil were removed near former Plant 4 between September and November 2015, and approximately 2.35 million gallons of groundwater was extracted, treated, and disposed of during excavation activities. Daramend was mixed with the backfill to promote degradation of any residual PCE or TCE. Comprehensive groundwater sampling to assess the effectiveness of the removal action and provide additional site characterization was completed in the fall of 2016 and spring of 2017 (Ecology and Environment, Inc. [E&E] 2017a). An EPA Optimization Team evaluation is underway for the project.

MTPugh 9/18/18
In September 2018 a data gap report was finalized. The purpose of this report is to review the current conceptual site model (CSM) for the Site to identify gaps in the understanding of the nature and extent of contamination, contaminant fate
and transport mechanisms, and exposure pathways necessary to evaluate potential remedies. The identified data gaps will be used to update the CSM in support of developing a final remedy for
contaminated groundwater in Operable Unit (OU) 2 at the Site.
Data Sources: EPA Revion 10 files; DEQ NWR Files;
Bridgewater Group. 2015. October 2014 Groundwater Monitoring Results and Groundwater Interim Action Status Report, Temco Site, Clackamas, Oregon. January.

Bridgewater Group. 2013. Draft Remedial Investigation Report, Temco Metal Products, 10240 SE Mather Road, Clackamas, Oregon. July.

CDM Smith. 2013. Final Report, Evaluation of the Potential for Monitored Natural Attenuation at the Northwest Pipe and Casing Site, Clackamas, Oregon. June.

Ecology and Environment, Inc. 2017a. 20152016 Removal Activities Report, Northwest Pipe and Casing, Clackamas, Oregon. July.

Ecology and Environment, Inc. 2017b. Site-Specific Sampling Plan and Data Management Plan for Groundwater Sampling, Northwest Pipe and Casing Site, Clackamas, Oregon. March.

Ecology and Environment, Inc. 2016. Site-Specific Sampling Plan
for the Northwest Pipe and Casing Groundwater Sampling, Clackamas, Oregon. March.

Ecology and Environment, Inc. 2015. Site-Specific Sampling Plan for the Northwest Pipe and Casing Site Removal Action, Clackamas, Oregon. October.

Helsel, D.R., D.K. Mueller, and J.R. Slack. 2006. Computer Program for the Kendall Family of Trend
Tests. U.S. Geological Survey SIR 2005-5275

Oregon Department of Transportation. 2013. Air Monitoring Letter Report for ODOT Lawnfield
Road Maintenance Facility. June.

Parametrix. 2015. Remedial Investigation Amendment Report, Northwest Pipe & Casing Site,
Clackamas, Oregon. April 2015.

Parametrix. 2014a. July 2013 Source Investigation, Northwest Pipe and Casing Superfund Site. Feb
24.

Parametrix. 2014b. Addendum to the Site Wide Groundwater Monitoring QAPP, Northwest Pipe
and Casing, Clackamas Oregon, October.

Parametrix. 2013. Addendum to the Quality Assurance Project Plan for the Supplemental Site
Investigation, Northwest Pipe and Casing Superfund Site, Clackamas, Oregon. May 13, 2013.

Parametrix. 2011. November 2010 Site Wide Monitoring Report, Northwest Pipe and Casing,
Clackamas, Oregon. March.

Parametrix. 2009. Focused Field Investigation, Fall 2008, Northwest Pipe and Casing. Clackamas,
Oregon. February.

Rieke Consulting Services (RCS), 2018, July 2017/November 2017/January 2018 Air Sampling Analysis Results, Temco RI/FS Project, Clackamas, Oregon. March 9, 2018.

Rieke Consulting Services (RCS), 2017, April 2017 Groundwater Monitoring Results Data, Temco
RI/FS Project, Clackamas, Oregon. May 24, 2017.

Roy F. Weston, Inc. 1998. Remedial Investigation Report, Northwest Pipe & Casing/Hall Process
Company, Clackamas, Oregon, Volume I. August.

Shannon and Wilson. 2012a. Level 2 Preliminary Site Investigation, OR 212/224 Sunrise Corridor
Section, 9885 SE Mather Road, Clackamas, Oregon. July.

Shannon and Wilson. 2012b. Level 2 Preliminary Site Investigation, OR 212/224 Sunrise Corridor
Section, 9887 SE Mather Road, Clackamas, Oregon. July.

Shannon and Wilson. 2012c. Level 2 Preliminary Site Investigation, OR 212/224 Sunrise Corridor Section, Bordeaux Lane, Clackamas, Oregon. July.

UnderCover RV Boat Storage. 1999. Site Characterization and Interim Remedial Action Report, Townes/Winkleman and Iron Partners Property Transaction, 9885 SE Mather Road, Clackamas,
OR. March.

United States Environmental Protection Agency (EPA). 2016. Third Five Year Review Report for Northwest Pipe and Casing Superfund Site, Clackamas, Oregon. September.

United States Environmental Protection Agency. 2011. Remedial Action Report for August 2009
through June 2010, Removal Action at Northwest Pipe and Casing, Clackamas, Oregon. June.

United States Environmental Protection Agency. 2008a. Northwest Pipe and Casing Vapor
Intrusion Study. May.

United States Environmental Protection Agency. 2008b. Northwest Pipe and Casing Vapor Intrusion Study and Risk Analysis. October.

United States Environmental Protection Agency. 2001. Record of Decision, Northwest Pipe and Casing Company/Hall Process Company Groundwater Operable Unit (OU2). September.

U.S. Army Corps of Engineers. 2016. Long-Term Response Stage Optimization Review Report,
Northwest Pipe and Casing Superfund Site, Clackamas, Oregon. April.

URS Corporation. 2002. Interim Remedial Action Report, Northwest Pipe and Casing/Hall Process
Company. March 2002.


Substance Contamination Information

Substance Media Contaminated Concentration Level Date Recorded
PCB 1221 Soil 1,000 ppm  
POLYAROMATIC HYDROCARBONS (PAH) Sediment unknown  
POLYAROMATIC HYDROCARBONS (PAH) Soil up to 5,800 ppm  
POLYAROMATIC HYDROCARBONS (PAH) Surface Water unknown  
VOLATILE ORGANIC COMPOUNDS (VOC) Groundwater up to 5 ppm  
VOLATILE ORGANIC COMPOUNDS (VOC) Sediment up to 4.5 ppm  
VOLATILE ORGANIC COMPOUNDS (VOC) Soil 3.2 pm  
VOLATILE ORGANIC COMPOUNDS (VOC) Surface Water up to 53 ppb  

Investigative, Remedial and Administrative Actions

Action Start Date Compl. Date Resp. Staff Lead Pgm
OPERATION & MAINTENANCE  (Primary Action) 11/29/2004   Mark Pugh SRS
View Full Report Showing Action History

Key to Certain Acronyms and Terms in this Report:

You may be able to obtain more information about this site by contacting Mark Pugh at the Northwest regional office or via email at mark.pugh@deq.state.or.us. If this does not work, you may contact Ximena Cruz Cuevas (503) 229-6811, or via email at ximena.cruzcuevas@deq.state.or.us or contact the Northwest regional office.